Details of the Researcher

PHOTO

Osamu Nishimura
Section
Graduate School of Engineering
Job title
Professor
Degree

  • 工学博士（東北大学）

e-Rad No.
80208214

Committee Memberships 13

  • 日本水処理生物学会　副会長

    2019/01 - Present

  • 国土審議会 水資源開発分科会調査企画部会及び吉野川部会　専門委員

    2018 - Present

  • 宮城県自然環境保全審議会　会長

    2017 - Present

  • 有明海・八代海等総合調査評価委員会　委員

    2011 - Present

  • 中央環境審議会水環境部会排水規制等専門委員会　専門委員

    2010 - Present

  • 伊豆沼・内沼自然再生協議会　会長

    2008/09 - Present

  • 産業用水調査会　用水と廃水編集委員

    1991/06 - Present

  • 日本水処理生物学会　評議員

    2002/01 - 2018/12

  • International Association on Water Environment　Water Research Regional Editor Board

    2003/07 - 2005/12

  • 土木学会論文集編集委員会　第７小委員会委員

    2002/04 - 2004/03

  • （社）日本水環境学会自然を活用した水環境改善実証事業評価検討委員会　委員

    1999/09 - 2004/03

  • 土木学会環境工学委員会環境工学に関る出版準備小委員会　幹事長

    1999/04 - 2004/03

  • 土木学会　環境工学委員会委員兼幹事

    1999/04 - 2003/03

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Professional Memberships 7

  • 環境放射能除染学会

  • 日本沿岸域学会

  • 日本下水道協会

  • 日本水道協会

  • 日本水処理生物学会

  • 日本水環境学会

  • 土木学会

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Research Interests 1

  • ecological engineering

Research Areas 5

  • Environmental science/Agricultural science / Environmental load reduction/restoration technology /

  • Environmental science/Agricultural science / Environmental dynamics /

  • Environmental science/Agricultural science / Environmental policy and society / Environmental Assessment

  • Environmental science/Agricultural science / Environmental impact assessment / Environmental Assessment

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Civil engineering (environmental systems) /

Awards 11

  1. 論文賞

    2017　日本水処理生物学会

  2. 大臣官房廃棄物・リサイクル対策部長表彰

    2016　環境省

  3. 有功賞

    2013/06　日本下水道協会

  4. 論文賞

    2012/11　日本水処理生物学会

  5. 下水道協会誌奨励賞【学術部門】

    2012/06　日本下水道協会

  6. WET Excellent Paper Award

    2012/06　Japan Society of Water Environment

  7. 土木学会東北支部技術開発賞

    2012/03　土木学会東北支部

  8. Excellent Paper Award

    2012　WET

  9. 土木学会東北支部技術研究発表会技術開発賞

    2008/03/08　土木学会東北支部

  10. 日本水処理生物学会賞

    2007/11/16　日本水処理生物学会

  11. 「水」論文賞

    2004/04/05　月刊「水」　論文「干潟モデル実験装置を用いたベントス相の異なる干潟生態系の有機物動態の比較，環境工学研究論文集，39，209-218（2002）」に対して

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Papers 331

  1. Role of Seagrass as a Food Source for Benthos in Tidal Flats: Toward Conservation and Restoration of Resilient Ecosystems

    Yumi Nagahama, Munehiro Nomura, Osamu Nishimura

    Animals　15　(8)　1098-1098　2025/04/10

    Publisher: MDPI AG

    DOI： 10.3390/ani15081098 　

    eISSN： 2076-2615

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    Seagrass is a key primary producer in coastal ecosystems; however, most studies on seagrass-benthos interactions have focused on subtidal zones. Some species such as Zostera japonica grow in intertidal flats; however, their ecological functions remain unclear. Understanding whether intertidal seagrass beds contribute to benthic abundance and diversity can provide insights that facilitate tidal flat conservation. The present study clarifies the role of intertidal Z. japonica as a food source for benthos. Field surveys were conducted in an intertidal flat in Matsushima Bay, Japan. Five benthic species (Batillaria cumingii, Umbonium costatum, Phacosoma japonicum, Nereididae, and Paguroidea) were identified. Carbon and nitrogen stable isotope ratios (δ13C, δ15N) and fatty acid compositions of sediment organic matter, seawater, and target benthos were analyzed to determine food sources. The results showed that B. cumingii actively consumed Z. japonica-derived organic matter present in both seagrass and sandy sediments. Z. japonica also influenced bacterial community structure, providing a favorable habitat for Nereididae. Filter feeders (U. costatum and P. japonicum) exhibited minimal reliance on Z. japonica-derived organic matter. The findings suggest that, similar to subtidal seagrass ecosystems, intertidal seagrass meadows support benthic communities by supplying organic matter and enhancing bacterial production.

  2. EVALUATION OF THE TOXICITY REDUCTION FOR TAMAGAWA NEUTRALIZATION TREATMENT FACILITY USING WET METHODS

    Juhyun KIM, Shuhei MASUDA, Reina TOMINO, Shohei OTOMO, Osamu NISHIMURA

    Japanese Journal of JSCE　81　(1)　n/a-n/a　2025

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.24-00149 　

    eISSN： 2436-6021

  3. Dual benefits of biofouling reduction in non-fed aquaculture: On-site heat treatment enhances oyster production and mitigates local environmental impacts

    Yuji Hatakeyama, Megumu Fujibayashi, Chikako Maruo, Osamu Nishimura, Takashi Sakamaki

    Journal of Cleaner Production　472　2024/09/25

    DOI： 10.1016/j.jclepro.2024.143502 　

    ISSN： 0959-6526

  4. Prediction of algal bloom using a combination of sparse modeling and a machine learning algorithm: Automatic relevance determination and support vector machine

    Yohei Miura, Hiroomi Imamoto, Yasuhiro Asada, Masaki Sagehashi, Michihiro Akiba, Osamu Nishimura, Daisuke Sano

    Ecological Informatics　78　2023/12

    DOI： 10.1016/j.ecoinf.2023.102337 　

    ISSN： 1574-9541

  5. Development of a Quantification and Detection Method for 2-MIB-producing Cyanobacteria

    Ji Zhang, Qingyue Shen, Hanchen Miao, Qintong Li, Marie Shimada, Tian Yuan, Motoo Utsumi, Zhongfang Lei, Zhenya Zhang, Hirokazu Takanashi, Naoshi Fujimoto, Satoshi Ichise, Yasuhiro Asada, Osamu Nishimura, Michihiro Akiba, Kazuya Shimizu

    Turkish Journal of Fisheries and Aquatic Sciences　23　(4)　2023/04

    DOI： 10.4194/TRJFAS21811 　

    ISSN： 1303-2712

  6. ORIGIN ANALYSIS OF ORGANIC MATTER IN INNER BAY SEDIMENTS FOR EVALUATION OF BLUE CARBON STORAGE

    TOMIZAWA Futa, HATAKEYAMA Yuji, UESUGI Kenshiro, MARUO Chikako, NISHIMURA Osamu, SAKAMAKI Takashi

    Japanese Journal of JSCE　79　(25)　n/a　2023

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.23-25031 　

    eISSN： 2436-6021

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    In recent years, carbon offsetting, which promotes the reduction and absorption of greenhouse gas emissions as a countermeasure against global warming, has been attracting attention. While terrestrial forests have been utilized as a place to absorb greenhouse gases, or carbon negative sites, seagrass beds are expected to play an important role. The carbon absorbed, sequestered, and stored in the ocean and sediments by marine organisms is called blue carbon, which was proposed by the United Nations Environment Programme (UNEP) in 2009, but the exact amount of carbon sequestration is not yet known, and scientific issues remain. This study aimed to analyze the carbon origin of organic matter in the sediments of Shizugawa Bay and to evaluate the effect of seagrass- and seaweed-derived organic matter on the sequestration in the sediments. The carbon and nitrogen stable isotope ratios were measured as indicators of organic matter, and the origin of the organic matter was analyzed. The cellulose, a refractory organic matter, was separated, and its carbon stable isotope ratios were measured. The result indicated that cellulose not only from land plants but also from seaweeds and seagrasses was a component of sediment organic matter may be contained in the bottom sediment.

  7. EFFECTS OF TEMPORAL PATTERNS IN NUTRIENT SUPPLY ON THE FATTY ACID COMPOSITION OF MARINE DIATOMS

    UESUGI Kenshiro, YAMAGUCHI Kei, HATAKEYAMA Yuji, MARUO Chikako, NISHIMURA Osamu, SAKAMAKI Takashi

    Japanese Journal of JSCE　79　(25)　n/a　2023

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.23-25011 　

    eISSN： 2436-6021

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    The temporal patterns of nutrient inputs into coastal marine systems are affected by changes in precipitations, hydrological runoff, and release of treated wastewater. Those further affects quantitatively and qualitatively marine primary producers. We conducted a continuous incubation experiment of the diatom species Skeletonema marinoi-dohrnii under two different supply patterns of inorganic nitrogen and phosphorous: short-term intensive supply (pulse treatment) and continuous low-concentration supply (press treatment). In the pulse treatment, the concentration of diatom cells showed apparent production-wethering cycles, and reached relatively higher concentrations at the steady state. While the content of essential fatty acids in the diatom cells was also relatively higher in the pulse treatment, the contents of some of the saturated and monosaturated fatty acids were higher in the diatoms produced under the press treatment. In the press treatment, the continuous depletion of nutrients may have caused an adaptive response of the diatoms leading to their lower growth rate as well as lower contents of the essential fatty acids.

  8. THE ORIGINS OF FOOD RESOURCES ASSIMILATED BY FOULING ORGANISMS IN SEAWATER COOLING SYSTEMS OF POWER STATIONS: A STABLE ISOTOPIC ANALYSIS

    SAKAMAKI Takashi, HATAKEYAMA Yuji, MARUO Chikako, SAITO Takaya, NISHIMURA Osamu

    Japanese Journal of JSCE　79　(25)　n/a　2023

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.23-25009 　

    eISSN： 2436-6021

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    We examined the orignins and nutritional value of suspended particulate organic matter (POM) in seawater, which are the potential food source for fouling organisms, in seawater cooling systems of six power stations located in the norseastern Japan. We sampled POM and fouling organisms, and analyzed them for C and N stable isotope ratios (δ13C, δ15N) and the ratio of C/N. As a result, the chemical properties of POM varied between the power stations. POM from the three stations on the Japan Sea coast was considered to have relatively higher contents of POM originating from terrestrial plant and/or riverine producers. POM from the other three stations on the Pacific Ocean coast likely had higher contents of marine phytoplanktons. The POM concentration was generally positively related to dissolved inorganic nitrogen in the seawaters, suggesting that the reduction of anthropogenic nitrogen can potentially be an effective tactics to mitigate the biofoulings in the cooling systems. Furthermore, δ13C and δ15N of the fouling organisms were markedly higher compared with those of POM. This suggests that the fouling organisms selectively assimilated the marine phytoplankton fraction of the bulk POM. Therefore, when the food supply for the fouling ornigsms is evaluated based on bulk POM, that is potentially overestimated. To properly predict effects of nutrient/POM reductions on the production of fouling organisms, further studies are necessaly to accumulate field data and develop reliable, quantitative models describing relationships for POM vs. nutrients as well as fouling organisms vs. POM.

  9. THE FEEDING AND BIODEPOSITING ABILITY OF CULTIVATED OYSTERS VURSUS FOULING MUSSELS : INSITES FROM FATTY ACIDS ANALYSIS

    HATAKEYAMA Yuji, MARUO Chikako, NISHIMURA Osamu, SAKAMAKI Takashi

    Japanese Journal of JSCE　79　(25)　n/a　2023

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejj.23-25022 　

    eISSN： 2436-6021

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    We compared the feeding and biodepositing rate of the cultivated oysters and fouling mussels by the feeding experiment. The object of this study was to understand the impacts of fouling mussels on the growth of oysters and the load of particulate organic matter (POM) to the sea bottom at the oyster farms. Results showed that the feeding rate of EPA and DHA per the biomass of bivalve were larger in fouling mussels compared with oysters, which implied that fouling mussels can ingest more POM originated from phytoplankton which is essential for their growth. It was also revealed that mussels excrete more POC than oysters per unit biomass and per time. On the other hand, the amount of EPA and DHA per unit POC was lower in biodeposits from mussels than that from oysters. These results imply that removing fouling mussels from oyster farms can reduce the mass of settling POM from farms, although it is possible that the oxygen consumption rate of settling POM increase in the short term. In conclusion, removing fouling mussels from oyster farms can lead to the form of sustainable aquaculture, in terms of the efficient use of phytoplankton resources and the mitigation of the environmental impacts.

  10. Understanding the Municipalities’ Current Situation and Issue for Decarbonization through the use of National Statistical Microdata.

    SHIGE Koichiro, SAKAMAKI Takashi, NISHIMURA Osamu

    Papers on Environmental Information Science　ceis36　68-74　2022/11/30

    Publisher: Center for Environmental Information Science

    DOI： 10.11492/ceispapers.ceis36.0_68 　

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    Utilizing the microdata of the national statistical survey, It was analyzed that the current situation and issues toward regional decarbonization as a case study of municipalities in Iwate prefecture. It was obtained that valuable knowledge such as the rules, the current status and issues of cooperation with companies and other municipalities, the awareness of issues regarding future measures by municipalities, and the direction of response. Currently, only a part of the microdata is disclosed, but it is expected that disclosing all statistical microdata advance environmental policy.

  11. Development of Rapid PCR Methods for the Detection and Quantification of Geosmin-Producing Dolichospermum spp.

    Hanchen Miao, Ji Zhang, Qingyue Shen, Satoshi Ichise, Yasuhiro Asada, Yuan Tian, Motoo Utsumi, Zhongfang Lei, Zhenya Zhang, Hirokazu Takanashi, Naoshi Fujimoto, Osamu Nishimura, Michihiro Akiba, Kazuya Shimizu

    WATER AIR AND SOIL POLLUTION　233　(9)　2022/09

    DOI： 10.1007/s11270-022-05859-4 　

    ISSN： 0049-6979

    eISSN： 1573-2932

  12. Effects of spatial scale on assessments of suspension bivalve aquaculture for productivity and environmental impacts

    Takashi Sakamaki, Yizhe Zheng, Yuji Hatakeyama, Megumu Fujibayashi, Osamu Nishimura

    Aquaculture　553　2022/05/15

    DOI： 10.1016/j.aquaculture.2022.738082 　

    ISSN： 0044-8486

  13. Temperature affects growth, geosmin/2-methylisoborneol production, and gene expression in two cyanobacterial species

    Qingyue Shen, Qian Wang, Hanchen Miao, Marie Shimada, Motoo Utsumi, Zhongfang Lei, Zhenya Zhang, Osamu Nishimura, Yasuhiro Asada, Naoshi Fujimoto, Hirokazu Takanashi, Michihiro Akiba, Kazuya Shimizu

    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH　29　(8)　12017-12026　2022/02

    DOI： 10.1007/s11356-021-16593-5 　

    ISSN： 0944-1344

    eISSN： 1614-7499

  14. Hydrodynamic-Driven Changes in the Source and Composition of Sedimentary Organic Matter via Grain Size Distribution in Shallow Lakes

    Xiaoguang Xu, Ruijie Shi, Chengxu Lv, Huazu Liu, Wei Yang, Shenhua Qian, Megumu Fujibayashi, Yue Zhi, Guoxiang Wang, Munehiro Nomura, Osamu Nishimura, Wei Li

    Journal of Geophysical Research: Biogeosciences　126　(11)　2021/11

    DOI： 10.1029/2021JG006502 　

    ISSN： 2169-8953

    eISSN： 2169-8961

  15. The water temperature changes the effect of pH on copper toxicity to the green microalgae Raphidocelis subcapitata

    Gissela Pascual, Daisuke Sano, Takashi Sakamaki, Michihiro Akiba, Osamu Nishimura

    Chemosphere　133110-133110　2021/11

    Publisher: Elsevier BV

    DOI： 10.1016/j.chemosphere.2021.133110 　

    ISSN： 0045-6535

  16. Impact of nitrogen compound variability of sewage treated water on N<inf>2</inf>O production in riverbeds

    Shuhei Masuda, Takemi Sato, Iori Mishima, Chikako Maruo, Hiroshi Yamazaki, Osamu Nishimura

    Journal of Environmental Management　290　2021/07/15

    DOI： 10.1016/j.jenvman.2021.112621 　

    ISSN： 0301-4797

    eISSN： 1095-8630

  17. The Negative Relationship between Fouling Organisms and the Content of Eicosapentaenoic Acid and Docosahexaenoic Acid in Cultivated Pacific Oysters, Crassostrea gigas. International-journal

    Megumu Fujibayashi, Osamu Nishimura, Takashi Sakamaki

    Marine drugs　19　(7)　2021/06/25

    DOI： 10.3390/md19070369 　

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    Bivalves serve as an important aquaculture product, as they are the source of essential fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), in our diet. However, their cultivation in the wild can be affected by fouling organisms that, in turn, affect their EPA and DHA content. The effects of fouling organisms on the EPA and DHA contents of cultivated bivalves have not been well documented. We examined the effects of fouling organisms on the EPA and DHA contents and condition index of cultured oysters, Crassostrea gigas, in an aquaculture system. We sampled two-year-old oysters from five sites in Shizugawa Bay, Japan, in August 2014. Most of the fouling organisms were sponges, macroalgae, and Mytilus galloprovincialis. A significant negative relationship existed between the DHA content in C. gigas and the presence of sponges and macroalgae. A lower C. gigas EPA content corresponded to a higher M. galloprovincialis fouling mass and a lower C. gigas condition index. This can be explained by dietary competition between C. gigas and M. galloprovincialis for diatoms, which were the main producer of EPA in our study sites. Our findings indicate that fouling organisms likely reduce the EPA and DHA content in cultivated oysters. Therefore, our results suggest that the current efforts to remove fouling organisms from oyster clusters is an effective strategy to enhance the content of EPA and DHA in oysters.

  18. Sources and oxygen consumption of particulate organic matter settling in oyster aquaculture farms: Insights from analysis of fatty acid composition

    Yuji Hatakeyama, Tatsuya Kawahata, Megumu Fujibayashi, Osamu Nishimura, Takashi Sakamaki

    Estuarine, Coastal and Shelf Science　254　2021/06/05

    DOI： 10.1016/j.ecss.2021.107328 　

    ISSN： 0272-7714

  19. Predictive water virology using regularized regression analyses for projecting virus inactivation efficiency in ozone disinfection

    Syun suke Kadoya, Osamu Nishimura, Hiroyuki Kato, Daisuke Sano

    Water Research X　11　2021/05/01

    DOI： 10.1016/j.wroa.2021.100093 　

    eISSN： 2589-9147

  20. Limitation of voltage reversal in the degradation of azo dye by a stacked double-anode microbial fuel cell and characterization of the microbial community structure

    Xian Cao, Hui Wang, Xizi Long, Osamu Nishimura, Xianning Li

    Science of the Total Environment　754　2021/02/01

    DOI： 10.1016/j.scitotenv.2020.142454 　

    ISSN： 0048-9697

    eISSN： 1879-1026

  21. Assessment of nitrous oxide production in eutrophicated rivers with inflow of treated wastewater based on investigation and statistical analysis

    Iori Mishima, Shuhei Masuda, Takashi Kakimoto, Kazuhiro Ikeda, Keiji Watanabe, Chikako Maruo, Osamu Nishimura

    Environmental Monitoring and Assessment　193　(2)　2021/02

    DOI： 10.1007/s10661-021-08855-z 　

    ISSN： 0167-6369

    eISSN： 1573-2959

  22. Corrigendum to “Effects of chemical interaction of nutrients and EDTA on metals toxicity to Pseudokirckneriella subcapitata” [Ecotoxicol. Environ. Saf. 203 (2020) 110966] (Ecotoxicology and Environmental Safety (2020) 203, (S0147651320308058), (10.1016/j.ecoenv.2020.110966))

    Gissela Pascual, Daisuke Sano, Takashi Sakamaki, Osamu Nishimura

    Ecotoxicology and Environmental Safety　208　2021/01/15

    DOI： 10.1016/j.ecoenv.2020.111465 　

    ISSN： 0147-6513

    eISSN： 1090-2414

  23. Geochemical distribution of heavy metal elements and potential ecological risk assessment of Matsushima Bay sediments during 2012–2016

    Yuki Ota, Atsushi Suzuki, Kyoko Yamaoka, Masayuki Nagao, Yuichiro Tanaka, Toshiaki Irizuki, Osamu Fujiwara, Kaoru Yoshioka, Shungo Kawagata, Shigenori Kawano, Osamu Nishimura

    Science of the Total Environment　751　2021/01/10

    DOI： 10.1016/j.scitotenv.2020.141825 　

    ISSN： 0048-9697

    eISSN： 1879-1026

  24. Estimation of Municipalities' CO2 Emissions for Realization of the "Zero Carbon Cities" considering the Amount of Renewable Energy and the Forest Absorption

    Shige Koichiro, Sakamaki Takashi, Nishimura Osamu

    Journal of Japan Society of Energy and Resources　42　(3)　158-165　2021

    Publisher: Japan Society of Energy and Resources

    DOI： 10.24778/jjser.42.3_158 　

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    The number of municipalities declaring "2050 Zero Carbon City" is increasing, but many of these don't plan concretely. In this study, the greenhouse gas emissions of municipalities are estimated by subtracting the amount of CO2 reduction by renewable energy and the amount of CO2 absorption by forests from the amount of CO2 emissions from these municipalities.As a result, it is estimated that 1/5 of the municipalities in the Tohoku 7 prefectures are already zero carbon cities. These Zero Carbon Cities are more affected by the amount of CO2 absorption by forests than the amount of CO2 reduction by renewable energy. This study also reveals that as for the prefectural capitals, it is difficult to become Zero Carbon Cities by themselves, but for Morioka City, Iwate Prefecture and so on, it is possible to become Zero Carbon Cities by regional partnership with neighboring municipalities.According to the estimation of 2050, if at least 30% of the renewable energy potential is installed, about half of the municipalities in the Tohoku will become Zero Carbon Cities.

  25. Effects of elevated nitrogen on the growth and geosmin productivity of Dolichospermum smithii

    Qingyue Shen, Kazuya Shimizu, Hanchen Miao, Shinya Tsukino, Motoo Utsumi, Zhongfang Lei, Zhenya Zhang, Osamu Nishimura, Yasuhiro Asada, Naoshi Fujimoto, Hirokazu Takanashi, Michihiro Akiba

    Environmental Science and Pollution Research　28　(1)　177-184　2021/01

    DOI： 10.1007/s11356-020-10429-4 　

    ISSN： 0944-1344

    eISSN： 1614-7499

  26. Decomposition of the Deposited Microcystis (Cyanobacteria) and Its Availability as a Food Source for Macrobenthos Peer-reviewed

    Yumi NAGAHAMA, Chikako MARUO, Takehiko FUKUSHIMA, Munehiro NOMURA, Osamu NISHIMURA

    76　(7)　Ⅲ_361-Ⅲ_366　2020/12

    DOI： 10.2208/jscejer.76.7_III_361 　

  27. Regularized regression analysis for the prediction of virus inactivation efficiency by chloramine disinfection

    Syun Suke Kadoya, Osamu Nishimura, Hiroyuki Kato, Daisuke Sano

    Environmental Science: Water Research and Technology　6　(12)　3341-3350　2020/12

    DOI： 10.1039/d0ew00539h 　

    ISSN： 2053-1400

    eISSN： 2053-1419

  28. Effects of chemical interaction of nutrients and EDTA on metals toxicity to Pseudokirckneriella subcapitata

    Gissela Pascual, Daisuke Sano, Takashi Sakamaki, Osamu Nishimura

    Ecotoxicology and Environmental Safety　203　2020/10/15

    DOI： 10.1016/j.ecoenv.2020.110966 　

    ISSN： 0147-6513

    eISSN： 1090-2414

  29. Inactivation kinetics modeling of Escherichia coli in concentrated urine for implementing predictive environmental microbiology in sanitation safety planning

    Wakana Oishi, Ikuo Kato, Nowaki Hijikata, Ken Ushijima, Ryusei Ito, Naoyuki Funamizu, Osamu Nishimura, Daisuke Sano

    Journal of Environmental Management　268　2020/08/15

    DOI： 10.1016/j.jenvman.2020.110672 　

    ISSN： 0301-4797

    eISSN： 1095-8630

  30. Effects of oyster age on selective suspension-feeding and the chemical composition of biodeposits: Insights from fatty acid analysis

    Takashi Sakamaki, Kyohei Hayashi, Yizhe Zheng, Megumu Fujibayashi, Osamu Nishimura

    Marine Ecology Progress Series　644　75-89　2020/06/25

    DOI： 10.3354/meps13359 　

    ISSN： 0171-8630

  31. Bottleneck size-dependent changes in the genetic diversity and specific growth rate of a rotavirus a strain

    Syun Suke Kadoya, Syun Ichi Urayama, Takuro Nunoura, Miho Hirai, Yoshihiro Takaki, Masaaki Kitajima, Toyoko Nakagomi, Osamu Nakagomi, Satoshi Okabe, Osamu Nishimura, Daisuke Sano

    Journal of Virology　94　(10)　2020/05/01

    DOI： 10.1128/JVI.02083-19 　

    ISSN： 0022-538X

    eISSN： 1098-5514

  32. NATURAL INACTIVATION KINETICS MODELING FOR A WATERBORNE ENTERIC VIRUS IN SURFACE WATER USING SPARSE REGRESSION AND HIERARCHICAL BAYESIAN ESTIMATION

    OISHI Wakana, KATO Ikuo, NISHIMURA Osamu, SANO Daisuke

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　76　(7)　III_449-III_460　2020

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejer.76.7_iii_449 　 10.2208/jscejer.78.7_iii_11_references_DOI_MM1xoWWJ81rVG1P9Wjd9uvbueQm 　

    ISSN： 1341-5115

    eISSN： 2185-6648

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    Unplanned and planned wastewater reuse are increasing and promising practices for a sustainable surface water resource management. However, pathogenic risk associated with wastewater reuse is a main concern due to the presence of negligible number of infectious enteric viruses in wastewater treatment effluent. A natural inactivation kinetics model of a pathogenic microorganism is essential to fully implement the HACCP approach into the sanitation safety planning. This study aimed to develop a natural inactivation kinetics model of an enteric virus of which predictors were measurable chemical and physical indicators of water matrix. First, the dataset of the time-course decay of the genus enterovirus and the chemical and physical indicators were collected through a literature review to be applied to the model construction. Second, we employed the sparse regression to select the model explanatory variables among temperature, acidic pH, alkaline pH and virus initial concentration. The inactivation rate constant of the Hom model was expressed as a function of alkaline pH, logarithm of the virus initial concentration, squared temperature and squared acidic pH, and the empirical constant was expressed as a function of the inactivation rate constant and temperature. The model parameters were estimated using the hierarchical Bayesian estimation, which provided the 95% credible interval of the time-course decay of enterovirus under varied pH and temperature. Finally, we validated the model with the measured natural decay of Enterovirus 71 (EV71) in buffer solutions (pH 7.0, 7.5, 8.0 and 4oC, 20oC, respectively), and demonstrated that the EV71 concentration was successfully predicted within the 95% credible intervals under the tested environmental conditions. Further studies need to include the contribution of other virucidal factors such as sunlight irradiations and suspended solid to the inactivation kinetics model.

  33. Management of Aquaculture and Marine Environment in an Open-Type Inner Bay Through the Satoumi Approach: The Case of Shizugawa Bay

    Teruhisa Komatsu, Shuji Sasa, Shuhei Sawayama, Hiroki Murata, Shigeru Montani, Osamu Nishimura, Takashi Sakamaki, Chihiro Yoshimura, Manabu Fujii, Tetsuo Yanagi

    Evolution of Marine Coastal Ecosystems under the Pressure of Global Changes　393-407　2020

    Publisher: Springer International Publishing

    DOI： 10.1007/978-3-030-43484-7_26 　

  34. Short-term chronic toxicity tests on acidified Lake Tazawa using responses of three trophic levels of aquatic organisms Peer-reviewed

    Juhyun Kim, Shuhei Masuda, Shigeki Harada, Osamu Nishimura

    Journal of Water and Environment Technology　18　(1)　1-8　2020

    DOI： 10.2965/jwet.19-046 　

    eISSN： 1348-2165

  35. Health Risk Management for the Users of a household-installed water supply system Based on Water Safety Planning Approach Peer-reviewed

    門屋俊祐, 牛島健, 伊藤竜生, 長谷川祥樹, 三浦尚之, 秋葉道宏, 西村修, 佐野大輔

    土木学会論文集　75　(7)　III_403-III_412　2019/12

  36. 志津川湾の湾奥河口部と湾中部における動物群集のトロフィックマーカー組成の比較 Peer-reviewed

    野中健太郎, 藤林恵, 松野匠, 西村修, 坂巻隆史

    土木学会論文集G（環境）　受理　2019/12

  37. 内湾のカキ養殖場における沈降有機物の起源と酸素消費速度 Peer-reviewed

    畠山勇二, 川畑達矢, 西村修, 坂巻隆史

    土木学会論文集G（環境）　受理　2019/12

  38. 脂肪酸組成分析を利用した内湾の一次生産に及ぼす湾外起源水混合の影響評価 Peer-reviewed

    大原光司, 湯上洋平, 藤林恵, 西村修, 坂巻隆史

    土木学会論文集G（環境）　受理　2019/12

  39. The Azo Dye Degradation and Differences Between the Two Anodes on the Microbial Community in a Double-Anode Microbial Fuel Cell

    Xizi Long, Xian Cao, Shentan Liu, Osamu Nishimura, Xianning Li

    Water, Air, and Soil Pollution　230　(11)　2019/11/01

    DOI： 10.1007/s11270-019-4325-4 　

    ISSN： 0049-6979

    eISSN： 1573-2932

  40. Predictive water virology: Hierarchical bayesian modeling for estimating virus inactivation curve

    Syun suke Kadoya, Osamu Nishimura, Hiroyuki Kato, Daisuke Sano

    Water (Switzerland)　11　(10)　2019/10/01

    DOI： 10.3390/w11102187 　

    eISSN： 2073-4441

  41. Characterization of electricity generation and microbial community structure over long-term operation of a microbial fuel cell

    Xizi Long, Xian Cao, Hailiang Song, Osamu Nishimura, Xianning Li

    Bioresource Technology　285　2019/08

    DOI： 10.1016/j.biortech.2019.121395 　

    ISSN： 0960-8524

    eISSN： 1873-2976

  42. Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake-Tsunami

    Yuki Ota, Atsushi Suzuki, Kyoko Yamaoka, Masayuki Nagao, Yuichiro Tanaka, Toshiaki Irizuki, Osamu Fujiwara, Kaoru Yoshioka, Shungo Kawagata, Shigenori Kawano, Osamu Nishimura

    Geochemistry, Geophysics, Geosystems　20　(8)　3913-3927　2019/08/01

    DOI： 10.1029/2019GC008381 　

    eISSN： 1525-2027

  43. Effect of sedimentary organic matter on species richness of deposit feeders in enclosed bay ecosystems: Insight from fatty acid nutritional indicators Peer-reviewed

    Megumu Fujibayashi, Takashi Sakamaki, Osamu Nishimura

    Marine Environmental Research　149　1-6　2019/08

    DOI： 10.1016/j.marenvres.2019.05.011 　

    ISSN： 0141-1136

    eISSN： 1879-0291

  44. Estimation on Degradability of Organic Matter derived from Aquatic Plant Litter Peer-reviewed

    M.Nomura, T.Chiba, O.Nishimura

    Journal of Water and Waste　61　(6)　409-415　2019/06

  45. Effect of Dissolved Oxygen Concentration on Microfauna in Activated Sludge Peer-reviewed

    Y.Shirakawa, M.Nomura, N.Takahashi, N.Tanaka, O.Nishimura

    Jpn. Jour. Water Treat. Biol.　55　(2)　23-34　2019/06

  46. Combined effects of elevated carbon dioxide and temperature on phytoplankton-zooplankton link: A multi-influence of climate change on freshwater planktonic communities

    Wei Li, Xiaoguang Xu, Jingmei Yao, Nobuyuki Tanaka, Osamu Nishimura, Hua Ma

    Science of the Total Environment　658　1175-1185　2019/03/25

    DOI： 10.1016/j.scitotenv.2018.12.180 　

    ISSN： 0048-9697

    eISSN： 1879-1026

  47. Approach deliberation for source identification of sedimentary organic matters via comparing freshwater lakes with multi-ecotypes Peer-reviewed

    Xiaoguang Xu, Wei Li, Hui Deng, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Guoxiang Wang

    Science of the Total Environment　649　327-334　2019/02/01

    DOI： 10.1016/j.scitotenv.2018.08.236 　

    ISSN： 0048-9697

    eISSN： 1879-1026

  48. Geochemical and micropaleontological impacts caused by the 2011 Tohoku-oki tsunami in Matsushima Bay, northeastern Japan

    Toshiaki Irizuki, Osamu Fujiwara, Kaoru Yoshioka, Atsushi Suzuki, Yuichiro Tanaka, Masayuki Nagao, Shungo Kawagata, Shigenori Kawano, Osamu Nishimura

    Marine Geology　407　261-274　2019/01

    DOI： 10.1016/j.margeo.2018.10.007 　

    ISSN： 0025-3227

  49. Toward realizing the sustainable use of and healthy marine environments in an open-type enclosed bay

    Teruhisa Komatsu, Shingo X. Sakamoto, Shuhei Sawayama, Hiroki Murata, Shuji Sasa, Shigeru Montani, Hajimu Yatabe, Naoya Yokoji, Hotaka Seko, Yuki Nakano, Manabu Fujii, Allam Ayman, Masafumi Natsuike, Hiroaki Ito, Chihiro Yoshimura, Takashi Sakamaki, Osamu Nishimura

    Integrated Coastal Management in the Japanese Satoumi: Restoring Estuaries and Bays　15-57　2019/01/01

    DOI： 10.1016/B978-0-12-813060-5.00002-X 　

  50. Contribution of dissolved N<inf>2</inf>O in total N<inf>2</inf>O emission from sewage treatment plant Peer-reviewed

    Shuhei Masuda, Shohei Otomo, Chikako Maruo, Osamu Nishimura

    Chemosphere　212　821-827　2018/12

    DOI： 10.1016/j.chemosphere.2018.08.089 　

    ISSN： 0045-6535

    eISSN： 1879-1298

  51. Transfer of cyanobacterial carbon to a higher trophic-level fish community in a eutrophic lake food web: fatty acid and stable isotope analyses Peer-reviewed

    Megumu Fujibayashi, Kunihiro Okano, Yoshihiro Takada, Hitoshi Mizutani, Noriko Uchida, Osamu Nishimura, Naoyuki Miyata

    Oecologia　188　(3)　901-912　2018/11/01

    DOI： 10.1007/s00442-018-4257-5 　

    ISSN： 0029-8549

  52. Azo dye degradation pathway and bacterial community structure in biofilm electrode reactors

    Xian Cao, Hui Wang, Shuai Zhang, Osamu Nishimura, Xianning Li

    Chemosphere　208　219-225　2018/10

    DOI： 10.1016/j.chemosphere.2018.05.190 　

    ISSN： 0045-6535

    eISSN： 1879-1298

  53. Biosorption of Mercury by Reed (Phragmites australis) as a Potential Clean Water Technology

    Paula Cecilia Soto-Ríos, Marco Antonio León-Romero, Otongtuya Sukhbaatar, Osamu Nishimura

    Water, Air, and Soil Pollution　229　(10)　2018/10/01

    DOI： 10.1007/s11270-018-3978-8 　

    ISSN： 0049-6979

    eISSN： 1573-2932

  54. Cyanobacterial carbon transfer to higher trophic level in eutrophic lake Taihu Peer-reviewed

    CAO Xian, FUJIBAYASHI Megumu, NISHIMURA Osamu, SAKAMAKI Takashi, NOMURA Munehiro

    Proceeding of 17th World Lake Conference　333-335　2018/10

  55. Analysis on sedimentary mechanism of organic matter in the coastal area of Lake Izunuma Peer-reviewed

    NOMURA Munehiro, FUJIMAKI Fumiya, NISHIMURA Osamu

    第17回世界湖沼会議論文集　377-379　2018/10

  56. Nutritional quality of fish faeces is enhanced by highly unsaturated fatty acid-producing heterotrophic protozoa Peer-reviewed

    Megumu Fujibayashi, Nobuyuki Tanaka, Shun Hashido, Aya Takasawa, Osamu Nishimura

    Acta Oecologica　89　21-26　2018/05

    DOI： 10.1016/j.actao.2018.04.003 　

    ISSN： 1146-609X

  57. The comparison of greenhouse gas emissions in sewage treatment plants with different treatment processes Peer-reviewed

    Shuhei Masuda, Itsumi Sano, Toshimasa Hojo, Yu You Li, Osamu Nishimura

    Chemosphere　193　581-590　2018/02

    DOI： 10.1016/j.chemosphere.2017.11.018 　

    ISSN： 0045-6535

    eISSN： 1879-1298

  58. 開放性内湾を対象とした沿岸環境管理法の研究：南三陸志津川湾の例，沿岸海洋研究 Peer-reviewed

    小松輝久, 佐々修司, 門谷茂, 吉村千洋, 藤井学, 夏池真史, 西村修, 坂巻隆史, 柳哲雄

    沿岸海洋研究　56　(1)　21-29　2018/01

  59. Effect of Steel Slag to Improve Soil Quality of Tsunami-Impacted Land while Reducing the Risk of Heavy Metal Bioaccumulation Peer-reviewed

    Marco Antonio León-Romero, Paula Cecilia Soto-Ríos, Munehiro Nomura, Osamu Nishimura

    Water, Air, and Soil Pollution　229　(1)　12　2018/01/01

    DOI： 10.1007/s11270-017-3666-0 　

    ISSN： 0049-6979

    eISSN： 1573-2932

  60. EVALUATION OF LIMITING FACTORS OF PRIMARY PRODUCTION OF INNER BAY USING FATTY ACID COMPOSITION ANALYSIS Peer-reviewed

    OHARA Koji, YUGAMI Yohei, KAWAHATA Tatsuya, FUJIBAYASHI Megumu, NISHIMURA Osamu, SAKAMAKI Takashi

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　74　(7)　III_53-III_61　2018

    Publisher: 公益社団法人 土木学会

  61. INFLUENCE OF OYSTER FARMING ON CHEMICAL COMPOSITION OF PARTICULATE ORGANIC MATTER AND OXYGEN CONSUMPTION RATE IN SEA WATER Peer-reviewed

    KAWAHATA Tatsuya, FUJIBAYASHI Megumu, YUGAMI Yohei, NISHIMURA Osamu, SAKAMAKI Takashi

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　74　(7)　III_63-III_71　2018

    Publisher: 公益社団法人 土木学会

  62. 下水処理場の水処理工程および放流河川における亜酸化窒素発生量の一体的評価 Peer-reviewed

    大友渉平, 増田周平, 千種将史, 丸尾知佳子, 西村修

    下水道協会誌論文集　54　(657)　114-123　2017/07

  63. Comparsion for Removal of Coliform Group between BOD Removal Type Johkasou and Nitrogen Removal Type Johkasou Peer-reviewed

    N.Takahashi, A.Sasaki, Y.Shirakawa, M.Nomura, O.Nishimura

    Jpn. Jour. Water Treat. Biol.　53　(1)　1-10　2017/03/15

    Publisher:

    DOI： 10.2521/jswtb.53.1 　

    ISSN： 0910-6758

  64. Impact of NaCl Solution Pretreatment on Plant Growth and the Uptake of Multi-heavy Metal by the Model Plant Arabidopsis thaliana Peer-reviewed

    Marco Antonio León-Romero, Paula Cecilia Soto-Ríos, Megumu Fujibayashi, Osamu Nishimura

    Water, Air, and Soil Pollution　228　(2)　2017/02

    DOI： 10.1007/s11270-017-3241-8 　

    ISSN： 0049-6979

    eISSN： 1573-2932

  65. Effects of watershed land-cover on the biogeochemical properties of estuarine tidal flat sediments: A test in a densely-populated subtropical island Peer-reviewed

    Akiko Morita, Shouji Touyama, Tomohiro Kuwae, Osamu Nishimura, Takashi Sakamaki

    Estuarine, Coastal and Shelf Science　184　207-213　2017/01/05

    DOI： 10.1016/j.ecss.2016.11.019 　

    ISSN： 0272-7714

    eISSN： 1096-0015

  66. 節水機器の導入が浄化槽からの温室効果ガス排出量に及ぼす影響 Peer-reviewed

    山崎宏史, 豊貞佳奈子, 蛯江美孝, 西村修

    土木学会論文集G(環境)　73　(7)　2017

    DOI： 10.2208/jscejer.72.III_267 　

  67. EVALUATION OF RESIDUAL RATIO OF PARTICULATE ORGANIC MATTER BY LONG-TERM DECOMPOSITION EXPERIMENT OF NELUMBO NUCIFERA AND DEPOSITION TENDENCY TO SEDIMENT

    NOMURA Munehiro, CHIBA Takayuki, FUJIBAYASHI Megumu, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　73　(7)　III_241-III_246　2017

    Publisher: 公益社団法人 土木学会

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    &amp;nbsp;In many of the world&#039;s lakes, the diversity of aquatic plants has collapsed. Dominance by lotus (&lt;i&gt;Nelumbo nucifera&lt;/i&gt;) is generally considered to progress organicization of bottom sediment. However, the quantity of lotus-derived refractory organic matter remains unknown. In order to investigate the influence of lotus-derived refractory organic matter on lake sediment characteristics, lotus degradation experiments and field observations of Lake Izunuma were carried out.&lt;br&gt;&amp;nbsp;The lotus degradation experiment lasted for 733 d, and the Multi-G model estimated that the residual ratio of particulate organic matter was about 35 and 58 % under aerobic and anaerobic conditions, respectively. In addition, by analyzing long-term lotus degradation and vertical sediment distribution, the present study suggests the possibility of estimating the refractory organic matter has been suggested by using an index of LCFAs/total fatty acid ratio.

  68. 節水機器の導入が浄化槽の処理性能に及ぼす影響 Peer-reviewed

    山崎 宏史, 蛯江 美孝, 西村 修

    土木学会論文集G　72　(7)　267-273　2016/11

    DOI： 10.2208/jscejer.72.III_267 　

  69. Response of microalgae to elevated CO<inf>2</inf> and temperature: impact of climate change on freshwater ecosystems Peer-reviewed

    Wei Li, Xiaoguang Xu, Megumu Fujibayashi, Qigui Niu, Nobuyuki Tanaka, Osamu Nishimura

    Environmental Science and Pollution Research　23　(19)　19847-19860　2016/10/01

    DOI： 10.1007/s11356-016-7180-5 　

    ISSN： 0944-1344

    eISSN： 1614-7499

  70. Effects of coagulation on filtration treatment for picophytoplankton removal Peer-reviewed

    M.Nomura, H.Anzai, M.Akiba, O.Nishimura

    Jpn. Jour. Water Treat. Biol.　52　(3)　65-71　2016/09/15

    Publisher:

    DOI： 10.2521/jswtb.52.65 　

    ISSN： 0910-6758

  71. Evaluation of Food Sources Assimilated by Unionid Mussels Using Fatty Acid Trophic Markers in Japanese Freshwater Ecosystems Peer-reviewed

    Megumu Fujibayashi, Osamu Nishimura, Hitoshi Tanaka

    Journal of Shellfish Research　35　(1)　231-235　2016/04

    DOI： 10.2983/035.035.0125 　

    ISSN： 0730-8000

  72. Food utilization of shell-attached algae contributes to the growth of host mud snail, Bellamya chinensis: Evidence from fatty acid biomarkers and carbon stable isotope analysis Peer-reviewed

    Megumu Fujibayashi, Takashi Sakamaki, Wooseok Shin, Osamu Nishimura

    Limnologica　57　66-72　2016/03/01

    DOI： 10.1016/j.limno.2015.11.006 　

    ISSN： 0075-9511

    eISSN： 1873-5851

  73. Fractionation of the stable carbon isotope ratio of essential fatty acids in zebrafish Danio rerio and mud snails Bellamya chinensis Peer-reviewed

    Megumu Fujibayashi, Masahiro Ogino, Osamu Nishimura

    Oecologia　180　(2)　589-600　2016/02/01

    DOI： 10.1007/s00442-015-3486-0 　

    ISSN： 0029-8549

    eISSN： 1432-1939

  74. Large-scale utilization of bamboo pulp

    Nishimura Osamu

    The Japanese Forest Society Congress　127　717-717　2016

    Publisher: THE JAPANESE FORESTRY SOCIETY

    DOI： 10.11519/jfsc.127.0_717 　

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    [in Japanese]

  75. Tsunami impacts on eelgrass beds and acute deterioration of coastal water quality due to the damage of sewage treatment plant in Matsushima Bay, Japan

    Takashi Sakamaki, Youhei Sakurai, Osamu Nishimura

    Coastal Research Library　14　187-199　2016

    DOI： 10.1007/978-3-319-28528-3_13 　

    ISSN： 2211-0577

    eISSN： 2211-0585

  76. Macrofauna in a Full-scale Vertical Flow Constructed Wetland during Vegetative Growth Stage

    NAKAMURA KAZUNORI, YANO TOKUO, SUYAMA YOSHIHISA, NISHIMURA OSAMU, NAKANO KAZUNORI

    Japanese Journal of Water Treatment Biology　52　(3)　45-54　2016

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.52.45 　

    ISSN： 0910-6758

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    In this study, soil macrofauna in the beds of a full-scale vertical flow constructed wetland were investigated to clarify the effects of vegetation on diversity of soil macrofauna. The investigation was conducted in the vegetative growth stage when plant had a great growth vigor. Because deposits were retained on the surface, macrofauna were investigated only the beds of the first stage. The macrofaunal abundance in vegetated beds was higher than in unvegetated beds, suggesting that vegetation increased macrofaunal diversity. This finding shows that the diversity of vegetation-dependent species generates a different level of diversity in the vegetative growth stage. Though the constructed wetland received rich deposits, i.e. food resources, vegetation affected macrofaunal diversity. Earthworms were most abundant in the 0－10 cm layer of vegetated beds, while their abundance peaked in the 10－20 cm layer of unvegetated beds. These findings may show that importantly, vegetation softens rapid changes in the environment (ex. soil temperature), rather than providing food resources for macrofaunal diversity. It was revealed that plant played an important role on macrofaunal diversity even in the constructed wetland where organic matters were constantly provided from wastewater.

  77. Interactions between biogeochemical environment and suspended oyster farming in Shizugawa Bay, Japan Peer-reviewed

    Y.Zheng, K.Hayashi, T.Matsuno, M.Fujibayashi, M.Nomura, O.Nishimura, T.Sakamaki

    Abstract Book of EMECS'11 - SeaCoasts XXVI Joint conference　80　2016

  78. THE SYNTHESIS OF ESSENTIAL FATTY ACIDS BY PROTOZOA CYCLIDIUM AND GLAUCOMA

    FUJIBAYASHI Megumu, HASHIDO Shun, TANAKA Nobuyuki, NOMURA Munehiro, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　72　(7)　III_567-III_572　2016

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.72.III_567 　

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    &amp;nbsp;Essential fatty acid (EFA), which are vital nutrient for all aquatic animals, have been considered to be produced by algal species in aquatic ecosystems. In this study, ability of EFA biosynthesis of protozoa, &lt;i&gt;Cyclidium&lt;/i&gt; sp. and &lt;i&gt;Glaucoma&lt;/i&gt; sp. was examined under 1 month culture experiment with &lt;i&gt;Alcaligenes faecalis&lt;/i&gt; as EFA deficient diet. Results showed that these protozoa could continuously grow without supply of EFA. Moreover, it is also revealed that &lt;i&gt;Glaucoma&lt;/i&gt; sp. and &lt;i&gt;Cyclidium&lt;/i&gt; could synthesize 18:2n6, and 18:3n3, 20:5n3, 22:n6n3 de novo, respectively. These findings predicts the role of protozoa as EFA producer for other aquatic animals in the ecosystems where algal production are limited.

  79. Influence of Anabaena Akinete on Algal Bloom Peer-reviewed

    M.Nomura, M.Tsuchida, O.Nishimura

    Journal of Water and Waste　57　(12)　891-898　2015/12/01

    Publisher:

    ISSN： 0513-5907

  80. The seasonal variation of emission of greenhouse gases from a full-scale sewage treatment plant Peer-reviewed

    Shuhei Masuda, Shunsuke Suzuki, Itsumi Sano, Yu You Li, Osamu Nishimura

    Chemosphere　140　167-173　2015/12/01

    DOI： 10.1016/j.chemosphere.2014.09.042 　

    ISSN： 0045-6535

    eISSN： 1879-1298

  81. Effect of Particle Size of Steel Slag Used for Seaweed bed Material on the Growth of Zostera japonica Peer-reviewed

    K.Saito, M.Nomura, O.Nishimura

    Environmental Engineering Research　52　215-220　2015/11/27

    DOI： 10.2208/jscejer.71.III_215 　

  82. Spatio-temporal characteristics of the fatty acid compositions of two macrobenthos (Nuttallia olivacea and Hediste sp.) in the Nanakita River estuary, Japan Peer-reviewed

    Woo Seok Shin, Megumu Fujibayashi, Osamu Nishimura

    Environmental Earth Sciences　74　(6)　5283-5293　2015/09/02

    DOI： 10.1007/s12665-015-4602-5 　

    ISSN： 1866-6280

    eISSN： 1866-6299

  83. Asymmetric response of sedimentary pool to surface water in organics from a shallow hypereutrophic lake: The role of animal consumption and microbial utilization Peer-reviewed

    Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Xianning Li

    Ecological Indicators　58　346-355　2015/06/26

    DOI： 10.1016/j.ecolind.2015.06.009 　

    ISSN： 1470-160X

    eISSN： 1872-7034

  84. Anaerobic treatment of p-acetamidobenzene sulfonyl chloride (p-ASC)-containing wastewater in the presence or absence of ethanol in a UASB reactor

    Wei cheng Li, Chunyan Wang, Zhe Tian, Hong Zhang, Yingxin Gao, Yu Zhang, Min Yang, Yu You Li, Osamu Nishimura

    International Biodeterioration and Biodegradation　98　81-88　2015/03/01

    DOI： 10.1016/j.ibiod.2014.09.002 　

    ISSN： 0964-8305

  85. Predominance of terrestrial organic matter in sediments from a cyanobacteria- blooming hypereutrophic lake Peer-reviewed

    Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Xianning Li

    Ecological Indicators　50　35-43　2015/03

    DOI： 10.1016/j.ecolind.2014.10.020 　

    ISSN： 1470-160X

  86. UASB treatment of chemical synthesis-based pharmaceutical wastewater containing rich organic sulfur compounds and sulfate and associated microbial characteristics

    Weicheng Li, Qigui Niu, Hong Zhang, Zhe Tian, Yu Zhang, Yingxin Gao, Yu You Li, Osamu Nishimura, Min Yang

    Chemical Engineering Journal　260　55-63　2015/01/15

    DOI： 10.1016/j.cej.2014.08.085 　

    ISSN： 1385-8947

  87. Differences in the removal mechanisms of Undaria pinnatifida and Phragmites australis as biomaterials for lead removal Peer-reviewed

    Paula Cecilia Soto-Rios, Kazunori Nakano, Marco Leon-Romero, Yoshio Aikawa, Shigeyuki Arai, Osamu Nishimura

    Water Science and Technology　72　(7)　1226-1233　2015

    DOI： 10.2166/wst.2015.334 　

    ISSN： 0273-1223

    eISSN： 1996-9732

  88. Elimination of cyanobacteria and cyanobacterial microcystin with increase in heterogeneity

    Wei Li, Qiu Jin, Xianning Li, Osamu Nishimura

    Ecological Engineering　73　487-493　2014/12/01

    DOI： 10.1016/j.ecoleng.2014.09.083 　

    ISSN： 0925-8574

  89. Feedback of threshold via estimating sources and composition of sedimentary organic matter across trophic gradients in freshwater lakes Peer-reviewed

    Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Takashi Sakamaki, Osamu Nishimura, Xianning Li

    Science of the Total Environment　500-501　373-382　2014/12/01

    DOI： 10.1016/j.scitotenv.2014.08.113 　

    ISSN： 0048-9697

    eISSN： 1879-1026

  90. Contribution of potential organic matter sources to the macrobenthos nutrition in the Natori estuarine tidal flats, Japan Peer-reviewed

    Woo Seok Shin, Megumu Fujibayashi, Osamu Nishimura

    Journal of Fourier Analysis and Applications　20　(6)　2014/11/18

    Publisher: Birkhauser Boston

    DOI： 10.1134/S1063074014050071 　

    ISSN： 1069-5869

  91. 最初沈殿池汚泥の酸発酵特性に及ぼす種汚泥とHRTの影響 Peer-reviewed

    北條俊昌, 李 玉友, 西村 修, 野池達也

    用水と廃水　56　(2)　56-63　2014/02/01

  92. Analysis of Impact of Allelopathy by Submerged Macrophytes Simulated by Ecosystem Model on Microalgal Biomass and Community

    TAKEDA Fumihiko, NAKANO Kazunori, AIKAWA Yoshio, NISHIMURA Osamu, SHIMADA Yoshihiko, FUKURO Shota, NAKAZAWA Takeshi, TANAKA Hitoshi, HAYASHI Norio, INAMORI Yuhei

    Japan journal of water pollution research　37　(2)　15-28　2014

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.37.15 　

    ISSN： 0916-8958

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    It has been unclear which functions of submerged macrophytes contribute to the change in chlorophyll a (Chl.a) and the microalgal community. In this study, we used a submerged macrophyte, Potamogeton pusillus, and modeled four kinds of functions of the macrophyte on the basis of the surveys in mesocosms and laboratory examinations. An ecosystem model taking into consideration the functions of a submerged macrophyte was developed. The model could simulate the change in several indexes of water quality in mesocosms. Results of simulation using the developed model indicated that allelopathy had little effect in decreasing the level of Chl.a, but caused a decrease in the biomass of cyanobacteria and an increase in that of diatoms. The combination of two functions, allelopathy and the increase in the number of individual of cladoceran by the submerged macrophyte, suggested enhanced predation of microalgae by the cladoceran owing to the decrease in the biomass of cyanobacteria and the relative increase in the biomasses of diatoms and chlorophytes by allelopathy, promoting the decrease in the level of Chl.a. The allelopathy of submerged macrophytes might have direct and indirect effects on microbial communities.

  93. Elucidation of assimilated food sources of pond snail Bellamya chinensis by using carbon stable isotope and fatty acid biomarker.

    FUJIBAYASHI Megumu, OSADA Yuki, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　70　(7)　III_413-III_418　2014

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.70.III_413 　

    ISSN： 2185-6648

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    &amp;nbsp;Assimilated food sources of pond snail, &lt;i&gt;Bellmaya chinensis&lt;/i&gt;, which has been designated as an endangerd species was investigated by using carbon stable isotope and fatty acid biomarker at paddy field in Shibata-gun, Miyagi prefecture. Stable isotope analysis revealed that main assimilated food source of &lt;i&gt;B. chinensis&lt;/i&gt; was sediment and periphyton on their shell. There was significant positive relationship between shell length and carbon stable isotope ratio. It indicated contribution of suspended matter was relatively higher in smaller individuals. From fatty acid biomarker, green algae or cyanobacteria were seemed to be main assimilated sources of &lt;i&gt;B. chinensis&lt;/i&gt; in all class of size.

  94. The role of rapid mixing condition on picophytoplankton floc growth Peer-reviewed

    Tugrul Selami Aktas, Megumu Fujibayashi, Fumihiko Takeda, Chikako Maruo, Osamu Nishimura

    Desalination and Water Treatment　52　(7-9)　1404-1413　2014

    DOI： 10.1080/19443994.2013.787951 　

    ISSN： 1944-3994

    eISSN： 1944-3986

  95. Lead removal efficiency using biosorbents as alternative materials for permeable reactive barriers Peer-reviewed

    Paula Cecilia Soto-Rios, Kazunori Nakano, Megumu Fujibayashi, Marco Leon-Romero, Osamu Nishimura

    Water Science and Technology　70　(2)　307-314　2014

    DOI： 10.2166/wst.2014.223 　

    ISSN： 0273-1223

  96. Contribution of potential organic matter sources to the macrobenthos nutrition in the Natori estuarine tidal flats, Japan Peer-reviewed

    Woo Seok Shin, Megumu Fujibayashi, Osamu Nishimura

    Russian Journal of Marine Biology　40　(5)　396-404　2014

    DOI： 10.1134/S1063074014050071 　

    ISSN： 1063-0740

  97. Mass Formation and Collection Methods, and Evaluation of Its Germination of Anabaena Resting Cells Peer-reviewed

    Y.Yajima, M.Nomura, S.Ichise, A.Suzuki, O.Nishimura

    Jpn. Jour. Water Treat. Biol.　49　(3)　103-108　2013/09

    Publisher:

    DOI： 10.2521/jswtb.49.103 　

    ISSN： 0910-6758

  98. Research on the geosmin content in akinetes of the cyanobacteria, Anabaena macrospora Peer-reviewed

    A.Suzuki, M.Nomura, Y.Yajima, S.Ichise, O.Nishimura

    Program of 32nd Congress of the International Society of Limnology　2013/08

  99. Biodegradation characteristics of organic matter derived from the aquatic plant Nelumbo nucifera by laboratory experiment Peer-reviewed

    T.Chiba, M.Nomura, M.Fujibayashi, C.Maruo, O.Nishimura

    Program of 32nd Congress of the International Society of Limnology　2013/08

  100. Comparison of four kinds of coagulants for the removal of picophytoplankton Peer-reviewed

    Tugrul Selami Aktas, Fumihiko Takeda, Chikako Maruo, Megumu Fujibayashi, Osamu Nishimura

    Desalination and Water Treatment　51　(16-18)　3547-3557　2013/04

    DOI： 10.1080/19443994.2012.750777 　

    ISSN： 1944-3994

    eISSN： 1944-3986

  101. 下水処理水に含まれるメタンおよび亞酸化窒素の排出量に占める溶存態成分の割合 Peer-reviewed

    増田周平, 佐野慈, 李玉友, 西村修

    用水と廃水　55　(3)　227-234　2013/03/01

    Publisher:

    ISSN： 0513-5907

  102. Chuetsu Pulp & Paper "Bamboo Paper" "Satoyama Paper" - solution of social subject with paper business

    Nishimura Osamu

    The Japanese Forest Society Congress　124　191-191　2013

    Publisher: THE JAPANESE FORESTRY SOCIETY

    DOI： 10.11519/jfsc.124.0.191.0 　

  103. Analysis of Relationship between Water Temperature History and Average BOD of the Treated Water in Johkasou

    INAMURA Shigeaki, YAMAZAKI Hiroshi, NISHIMURA Osamu

    Japan journal of water pollution research　36　(4)　123-127　2013

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.36.123 　

    ISSN： 0916-8958

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    The biochemical oxygen demand（BOD）and water temperature data of treated water of Johkasou were obtained by the legal inspection of Johkasou located at 160,000 sites in total. These inspections were carried out in each inspection month, and data were collected, tallied, and then analyzed. The results revealed that the water temperature observed at the time of inspection did not affect the average BOD. Instead, a highly linear correlation was observed, indicating that the average water temperature in 4-5 months until the inspection (which lies in the range 11-25 °C) affects the BOD of treatment water. This signifies that the condition of Johkasou observed at a specific time is affected by the cumulative effects of water temperature from a certain time in the past to the time of observation. Furthermore, although earlier inspections of Johkasou have shown that the BOD of treatment water was lower when the water temperature observed at the time of inspection was low, evaluating the moving-average water temperature with respect to the treatment performance of Johkasou reconfirmed that the BOD of treatment water was lower, while the average water temperature was higher, as anticipated in the past.

  104. Utilization of food sources before and after the Tsunami in Nuttallia olivacea at Gamo Lagoon, Japan Peer-reviewed

    Woo Seok Shin, Osamu Nishimura

    Environmental Engineering Research　18　(4)　259-265　2013

    DOI： 10.4491/eer.2013.18.4.259 　

    ISSN： 1226-1025

    eISSN： 2005-968X

  105. The Effect of Global Warmiing on Phytosynthesis of Seagrass: Change of Water Temparature and Sea Level Peer-reviewed

    Yumi NAGAHAMA, Yusuke IKEGAMI, Munehiro NOMURA, Osamu NISHIMURA

    J.JSCE,Ser.G(Environmental Research)　69　(7)　Ⅲ_473-Ⅲ_479　2013

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejer.69.III_473 　

    ISSN： 2185-6648

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    Seagrasses contribute greatly to the biodiversity of coastal areas. However, there have been big influence of global warming that may affect on marine organisms, especially the seagrasses. In this study, we focused on Zostera japonica which inhabits in intertidal and shallow subtidal zones, there is almost no information on the impact of global warming on this seagrass. We measured and modeled that the photosynthsis and respiration rates in Z. japonica and Zostera marina on the various water temperature and photon flux density. Moreover, we investigated by using this model and the IPCC A1B scenario the effect of global warming on seagrasse. At the result, It was estimated Z. japonica will be strongly influenced by the sea level rise than the water temperature increase in the future.

  106. Variability characteristic in the Growth of Nuttallia olivacea

    MARUO Chikako, Fujibayashi Megumu, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　69　(7)　III_495-III_501　2013

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.69.III_495 　

    ISSN： 2185-6648

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    &amp;nbsp;Now a days, bivalve population is decreasing in tifal flat. The objective of this study is to focus on the growth situation (BM) of bivalve (&lt;i&gt;Nuttallia olivacea&lt;/i&gt;) and their food sources. Indeed, it is used as a maker of food resource, based on carbon stable isotope (SI), composition of fatty acids (FA) and fatty acids specific stable carbon isotope (FA-SI). The results showed that SI of the bulk sample do not have any relation with BM. However, the compotision of FA revealed that EPA and DHA were useful nutrients for bivalve BM.Furthermore, FA-SI showed that the terrestrial EPA and DHA contribute to decrease, bivalve BM value. Therefore, it was considered terrestrial organic matter of food source is important element in the bivalve growth.

  107. Analysis of sedimentary organic carbon dynamics in Lake Izunuma using by current flow and fatty acid biomarker.

    FUJIBAYASHI Megumu, NOMURA Munehiro, XU Xiaoguang, SATO Ryou, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　69　(7)　III_565-III_570　2013

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.69.III_565 　

    ISSN： 2185-6648

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    &amp;nbsp;Eutrophication in closed water areas have been one of the most serious environmental concerns in all over the world. Not only water quality but also bottom sediment quality should be improved against for eutrophication. We investigated current flow, sedimentary organic carbon and fatty acid composition of bottom sediments in Lake Izunuma which is one of the most famous closed water lakes as eutrophic lake in Japan. There was negative relationship between exceedance probability of current velocity and sedimentary organic matter. Fatty acid analysis revealed the origin of organic carbon in bottom sediment was mainly higher plants. These results indicated the control of current flow and higher plants are required to manage closed water area.

  108. Influence of velocity gradient and rapid mixing time on flocs formed by polysilica iron (PSI) and polyaluminum chloride (PACl) Peer-reviewed

    Tugrul Selami Aktas, Megumu Fujibayashi, Chikako Maruo, Munehiro Nomura, Osamu Nishimura

    Desalination and Water Treatment　51　(22-24)　4729-4735　2013

    DOI： 10.1080/19443994.2012.751883 　

    ISSN： 1944-3994

    eISSN： 1944-3986

  109. The effect of pedal mucus of pond snail, Bellamya chinensis on decomposition of organic matter in paddy field sediments

    FUJIBAYASHI MEGUMU, SHIN WOO-SEOK, NAGAHAMA YUMI, AIKAWA YOSHIO, NISHIMURA OSAMU

    Japanese Journal of Water Treatment Biology　48　(4)　141-144　2012/12/15

    Publisher: 日本水処理生物学会

    DOI： 10.2521/jswtb.48.141 　

    ISSN： 0910-6758

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    Priming effect is known as a phenomenon that the decay of inputted labile organic compounds enhances the decomposition of native organic matter in sediment. In this study, pedal mucus of pond snail &lt;i&gt;Bellamya chinensis &lt;/i&gt;was examined whether it induced priming effect. Agar medium with sucrose and paddy field sediment were used as organic carbon sources in our laboratory experiments. Each sample was coated with pedal mucus by mean of letting snails crawl on the surface. Decomposition rate of each sample was compared with controls which doesn&amp;rsquo;t contain pedal mucus as oxygen consumption rate using by a coulometer. Oxygen consumption rates of samples which were coated with pedal mucus were larger than that of control. These results indicate pedal mucus of &lt;i&gt;B. chinensis&lt;/i&gt; possess ability to induce priming effect.

  110. Effects of Coexisting Anions on Adsorption of Perfluorooctane Sulfonates in Road Runoff Peer-reviewed

    K.Shigeizumi, C.Maruo, M.Nomura, Y.Aikawa, O.Nishimura, K.Nakano

    Jpn. Jour. Water Treat. Biol.　48　(4)　133-140　2012/12

    Publisher:

    DOI： 10.2521/jswtb.48.133 　

    ISSN： 0910-6758

  111. The Evaluation of Greenhouse Gas Emission from Sewage Treatment Plant Including Direct/Indirect Emission and Dissolved Gas Effluent Peer-reviewed

    MASUDA Shuhei, KYONO Takafumi, LI Yu-You, NISHIMURA Osamu

    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH　68　(7)　557-563　2012/11

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejer.68.III_557 　

    ISSN： 2185-6648

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    We discussed the influence of the difference of the three evaluation method on the counting greenhouse gas emission from sewage treatment plant. We calculated the amount of CH4 and N2O by three method, 1st : IPCCs' guideline, 2nd : the guideline in Japan, and 3rd : the method including the direct and indirect emission of N2O, the emission of dissolved N2O through treatment water, and the direct emission of CH4. The amount of GHGs calculated by Japans' method was lower than that of GHGs calculated by IPCCs' method, even both were calculated based on the identical data. The difference of the results among IPCCs' method, Japans' method, mix method and D-mix method was mainly arised by the indirect emission of N2O, it was supposed that the indirect emission of N2O was important factor quantatively in GHGs calculation. The amount of the dissolved N2O in treated water was almost equal to that of the direct gas emission of N2O, so the dissolved N2O was supposed to be a potential source of N2O emission.

  112. Greenhouse Gases Emission Factors and it's Reduction Measures in Sewage Treatment Plant Peer-reviewed

    SANO Itsumi, MASUDA Shuhei, LI Yu-You, NISHIMURA Osamu, HARADA Hideki

    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH　68　(7)　565-573　2012/11

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejer.68.III_565 　

    ISSN： 2185-6648

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    The emission factors and reduction measure of greenhouse gases (GHGs) in sewage treatment plant were assessed based on the calculation of LCCO2 and the measurement of CH4 and N2O. A total of 3 different typical types of sewage treatment system were investigated at each season for over a year, and the emission amount of GHGs and GHGs emission factor for each plant were identified. The three main sources for GHGs were the electric consumption, nitrous oxide from sludge incineration process and on-site methane production. The on-site methane emission was found in aeration tank and was depended on the season and water temperature. The nitrous oxide emission was depended on not only the temperature but also the treatment system. Based on the results of this study, GHGs reduction measures from sewage treatment plant was suggested.

  113. 循環式二段階嫌気性消化による初沈汚泥からのバイオエネルギー回収 Peer-reviewed

    北條俊昌, 李玉友, 西村修

    下水道協会誌　49　(597)　97-105　2012/07/01

  114. Origin and Bacterial Utilization of Organic Matters in Tidal-Flat Sediment

    SHIN WOO-SEOK, FUJIBAYASHI MEGUMU, NAGAHAMA YUMI, NOMURA MUNEHIRO, NISHIMURA OSAMU

    Japanese Journal of Water Treatment Biology　48　(2)　29-35　2012/06/15

    Publisher: 日本水処理生物学会

    DOI： 10.2521/jswtb.48.29 　

    ISSN： 0910-6758

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    The origin and bacterial utilization of organic matters in tidal-flat sediment were investigated using stable isotope and fatty acid analysis. Sedimentary organic matter (SOM) and potential food sources such as land plant, marine particulate organic matter (POM), benthic microalgae, riverine POM were taken from Gamo lagoon and Nanakita River Mouth. Land plant (&amp;delta;&lt;sup&gt;13&lt;/sup&gt;C = －26.6 and &amp;delta;&lt;sup&gt;15&lt;/sup&gt;N = 3.6) and riverine POM (&amp;delta;&lt;sup&gt;13&lt;/sup&gt;C = －25.5 and &amp;delta;&lt;sup&gt;15&lt;/sup&gt;N = 8.9) were isotopically distinct from benthic microalgae (&amp;delta;&lt;sup&gt;13&lt;/sup&gt;C = －16.3 and &amp;delta;&lt;sup&gt;15&lt;/sup&gt;N = 6.2) and marine POM (&amp;delta;&lt;sup&gt;13&lt;/sup&gt;C = －20.3 and &amp;delta;&lt;sup&gt;15&lt;/sup&gt;N = 10.3). In the degradation experiment of SOM for 50 days, the &amp;delta;&lt;sup&gt;13&lt;/sup&gt;C value of SOM decreased from －19.1 &amp;permil; to －20.7 &amp;permil;. This was due to the preferential utilization of higher &amp;delta;&lt;sup&gt;13&lt;/sup&gt;C organic matter such as benthic microalgae and marine POM by bacteria. Land plant and riverine POM had begun to degrade after the degradation of benthic microalgae and marine POM progressed.

  115. 下水浄化センターの水処理プロセスにおけるメタン発生量の定量化手法に関する検討 Peer-reviewed

    増田周平, 鈴木俊輔, 佐野泉, 李玉友, 西村修

    下水道協会誌　49　(594)　97-103　2012/04/01

  116. Nutritional importance of seagrasses to biodiversity of coastal area

    Nagahama Yumi, Nomura Munehiro, Nishimura Osamu

    Annual report of the Society for the Promotion of Construction Engineering　47　49-53　2012/04/01

    Publisher: 東北大学

    ISSN： 0288-9994

  117. 下水処理場における温室効果ガスの発生源解析と発生係数の季節変動 Peer-reviewed

    増田 周平, 鈴木俊輔, 李 玉友, 西村 修

    下水道協会誌　49　(594)　97-103　2012/04

  118. Fatty Acid Composition between Nuttallia olivacea and Hediste spp. in the Nanakita Estuary, Japan: Estimation of Food Sources Peer-reviewed

    W.S.Shin, M.Fujibayashi, M.Nomura, K.Nakano, O.Nishimura

    Journal of Water and Environment Technology　10　(1)　11-22　2012/03/28

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jwet.2012.11 　

    ISSN： 1348-2165

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    The spatial variability of the food availability in different depositional environments (Nanakita estuary, Japan) was investigated using fatty acid biomarkers. The main objective of the present study was to determine the food availability for Nuttallia olivacea and Hediste spp. in connection with the depositional environment of organic matter (OM). Sandy sediment was mainly occupied by diatoms, bacteria and marine organic matter. Meanwhile, muddy sediment is dominated by diatoms, bacteria and terrestrial organic matter. The main food sources and food availability for N. olivacea were mostly dominated by diatoms, bacteria and dinoflagellates in connection with the depositional environment. Meanwhile, the food utilization characteristics of Hediste spp. may be attributable to the lower food selectivity due to their deposit feeding. From these results, the food availability for N. olivacea was more influenced by the depositional environment in estuarine tidal flat than Hediste spp.

  119. Self-development of the treatment performance of multi stage vertical flow constructed wetlands working for two years

    NAKANO Kazunori, CHIGIRA Junki, NAKAMURA Kazunori, YANO Tokuo, NISHIMURA Osamu

    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH　68　(7)　III_87-III_92　2012

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejer.68.III_87 　

    ISSN： 2185-6648

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    Water quality in the multi stage vertical flow constructed wetland treating livestock wastewater was monitored and its treatment performance for two years after start-up was evaluated. Although the performance for the first year was affected by the seasonal variation of water temperature, the treatment capacity during winter season was improved significantly at second year, resulting in robust annual treatment performance of the second year. It suggested that the first year's performance of constructed wetland reflected the adapting process to the regional climate condition and the robust developped performance appeared from second year. Based on the treatment performance obtained for second year, the basic treatment unit for BOD, SS, TKN, T-N and T-P was determined as 26.2g-BOD/m2·d, 21.0g-SS/m2·d, 1.60g-TKN/m2·d, 1.55g-T-N/m2·d and 0.36g-T-P/m2·d, respectively.

  120. Effects of Screen and Sludge Circulations on the Performance of Domestic and Disposer Wastewater Treatment in Johkasou

    YAMAZAKI Hiroshi, EBIE Yoshitaka, XU Kai-Qin, INAMORI Yuhei, NISHIMURA Osamu

    Japan journal of water pollution research　35　(1)　1-8　2012

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.35.1 　

    ISSN： 0916-8958

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    The effects of screens and sludge circulation on disposer wastewater treatment performance and excess sludge production were investigated in Johkasou equipped with a screen. Almost all the dissolved BOD was converted to particulate BOD in an aerobic fluidized tank, and the particulate BOD was removed effectively in a sedimentation tank. Therefore, BOD removal ratio was not affected by the introduction of disposer wastewater or the pore size of the screen. The influent nitrogen concentration was high for the process in which disposer wastewater was introduced and no screen was used. However, the ratio of particulate T-N to T-N in the aerobic fluidized tank was quite high, and particulate T-N was removed effectively in the sedimentation tank. In the case of the process in which disposer wastewater was introduced and no screen was used, the amount of excess sludge was only 1.14 times higher than that in the case of the domestic wastewater treatment process even though the influent BOD concentration was 1.96 times higher. An increase in sludge circulation ratio led to a decrease in effluent nitrogen concentration. A sludge circulation ratio of 2 in the process in which disposer wastewater was introduced and no screen was used should be the optimum operation condition for effective BOD and nitrogen removal.

  121. Chemical properties of sediment in Nanakita estuarine tidal flat: Estimation of sedimentary organic matter origin by stable isotope and fatty acid

    Woo Seok Shin, Yoshio Aikawa, Osamu Nishimura

    Environmental Engineering Research　17　(2)　77-82　2012

    DOI： 10.4491/eer.2012.17.2.077 　

    ISSN： 1226-1025

    eISSN： 2005-968X

  122. Seabed environment damage of matsushima bay (Miyagi Prefecture, Japan) after the 2011 tohoku earthquake and tsunami

    Masayuki Nagao, Osamu Nishimura, Kiyokazu Nishimura, Hisao Sasaki, Nobuo Chiba, Atsushi Suzuki

    Proceedings of the International Offshore and Polar Engineering Conference　42-48　2012

    ISSN： 1098-6189

    eISSN： 1555-1792

  123. A comparison of zeta potentials and coagulation behaviors of cyanobacteria and algae

    Tugrul Selami Aktas, Fumihiko Takeda, Chikako Maruo, Nobuo Chiba, Osamu Nishimura

    Desalination and Water Treatment　48　(1-3)　294-301　2012

    DOI： 10.1080/19443994.2012.698828 　

    ISSN： 1944-3994

    eISSN： 1944-3986

  124. Effect of Food Source on the Growth of Nuttallia olivacea

    MARUO Chikako, FUJIBAYASHI Megumu, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　68　(7)　III_277-III_283　2012

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.68.III_277 　

    ISSN： 2185-6648

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    &amp;nbsp;Bivalve is one of the representative animal of tidal flat. The objective of this study is to clarify the effect of food source affecting growth of bivalve (&lt;i&gt;Nuttallia olivacea&lt;/i&gt;). Carbon stable istope (SI) , composition of fatty acid (FA) and fatty acid specific stable carbon isotope (FA-SI) . In the result, SI of the bulk sample indicated main food sources roughly. However the composition of FA revealed that EPA and DHA were useful nutrients for bivalve. Furthermore, FA-SI showed terrestrial EPA and DHA are more important food source. Therefore, it was considered FA-SI analysis was useful to clarify food web of various ecosystem.

  125. Analysis of sedimentary organic carbon origin in Taihu lake using by carbon and nitrogen stable isotope ratio

    FUJIBAYASHI Megumu, NOMURA Munehiro, XU Xiaoguang, LI Xianning, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　68　(7)　III_493-III_498　2012

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.68.III_493 　

    ISSN： 2185-6648

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    &amp;nbsp;Contribution of autochthonous (cyanobacteria) and allochthonous (reed) organic matter to sediment and utilization of organic matter by bacteria and benthic animals in northeast area of hypereutrophic lake, Taihu lake were investigated. Although Taihu lake suffered algal bloom almost over a year, two sources mixing model of carbon stable isotope ratio analysis showed that contribution of reed was more dominant than cyanobacteria in Taihu lake. Food web analysis using by bulk carbon and nitrogen stable isotope ratio indicated benthic animals mainly assimilated cyanobacteria. Moreover carbon stable isotope ratio of bacterial fatty acids in sediment showed bacteria have also assimilated cyanobacteria. These findings indicated turnover of cyanobacterial carbon was faster than reed, which seemed to be a reason sediment organic carbon was mainly originated from reed in Taihu lake.

  126. Caluculation of the isotopic fractionation of fatty acid-specific stable carbon isotope ratio by feeding experiment using zebrafish, Danio rerio

    OGINO Masahiro, FUJIBAYASHI Megumu, OSADA Yuki, AIKAWA Yoshio, NISHIMURA Osamu

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)　68　(7)　III_627-III_633　2012

    Publisher: 公益社団法人 土木学会

    DOI： 10.2208/jscejer.68.III_627 　

    ISSN： 2185-6648

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    &amp;nbsp;Stable isotope ratio of essential fatty acids (EFA) is expected to be a useful tool for analyzing food web, however the isotopic fractionation between animals and food source in each EFA has not been revealed yet. In order to obtain those coefficients, a 100-day feeding experiment was conducted on zebrafish (&lt;i&gt;Danio rerio&lt;/i&gt;) by using a commercial food source. From the results, it was revealed that each isotope ratio of 18:2n-6, 20:5n-3 and 22:6n-3 of zebrafish was approaching asymptotically to those of food source during experiment at 100-day and there were no significant difference between zebrafish and food source. However, stable isotope ratio of 20:4n-6 in zebrafish showed wide range of fractionation among each individual. This result was considered that metabolism of 20:4n-6 from 18:2n-6. These results indicate isotope ratio of EFA is useful tool to infer assimilated food sources.

  127. Evaluation of the Treatment Performance of Multi Stage Vertical Flow Constructed Wetlands for Livestock Farming Effluent Peer-reviewed

    J.Chigira, K.Nakano, H.L.Song, N.Chiba, M.Nomura, O.Nishimura

    Environmental Engineering Research, JSCE　48　III_627-III_631　2011/11

  128. Contribution of Phragmites australis as Nutrition for Macrobenthos in Estuarine Tidal Flats Peer-reviewed

    W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, K.Nakano, Y.Aikawa, O.Nishimura

    Proceeding USB flash memory of The 4th IWA-ASPIRE Conference and Exhibition　2011/10

  129. Design and Operation of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Runoff Peer-reviewed

    K.Nakano, J.Chigira, K.Nakamura, T.Yano, C.Maruo, M.Nomura, Y.Aikawa, O.Nishimura

    Proceeding USB flash memory of The 4th IWA-ASPIRE Conference and Exhibition　2011/10

    DOI： 10.2521/jswtb.47.103 　

  130. The investigation of the green house gases emission from sewage treatment plant by pseudo-anoxic-oxic activated sludge process

    Masuda Shuhei, Kyono Takafumi, Li Yu-You, Nhishimura Osamu

    Annual report of the Society for the Promotion of Construction Engineering　46　33-39　2011/04

    Publisher: Tohoku University

    ISSN： 0288-9994

  131. Importance of Zostera japonica as a Food Source for Benthos in Intertidal Zone Peer-reviewed

    Y.Nagahama, M.Nomura, M.Fujibayashi, W.S.Shin, O.Nishimura

    Meeting Program of ASLO Aquatic Sciences Meeting　78　2011/02

  132. The Study on Contribution of Microbial Organic Matter in Formation of Tidal Flat Sediment Peer-reviewed

    W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, O.Nishimura

    Meeting Program of ASLO Aquatic Sciences Meeting　86　2011/02

  133. Allelopathic Potential of Potamogeton pusillus Community Against Microcystis aeruginosa

    TAKEDA Fumihiko, NAKANO Kazunori, NISHIMURA Osamu, SHIMADA Yoshihiko, FUKURO Shota, TANAKA Hitoshi, HAYASHI Norio, INAMORI Yuhei

    J. of Wat. & Envir. Tech.　9　(1)　21-28　2011

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jwet.2011.21 　

    ISSN： 1348-2165

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    Allelopathic potential by a submerged macrophyte Potamogeton pusillus against Microcystis aeruginosa in actual ponds was evaluated. The culture filtrate of P. pusillus inhibited the growth of M. aeruginosa, suggesting that P. pusillus released allelochemicals. For the evaluation of allelopathic potential in actual ponds, water samples collected in and out of vegetated mesocosm were examined by a novel bioassay method. Also, allelopathic potential of water obtained from vegetated and unvegetated mesocosm was compared. As a result, water in P. pusillus-vegetated mesocosm showed an obvious growth-inhibiting effect on M. aeruginosa but not in unvegetated mesocosm and out of mesocosm. The water obtained from two ponds, Yamanokami and Bessho Pond, confirmed these effects. The results indicated allelopathic effect by P. pusillus community worked in actual ponds or lakes and the effect lasted as long as P. pusillus inhabited.

  134. Development and application of a simulation model for the thermophilic oxic process for treating swine waste

    Kyoungho Jeon, Kazunori Nakano, Osamu Nishimura

    Water Research　45　(1)　348-356　2011/01

    DOI： 10.1016/j.watres.2010.08.005 　

    ISSN： 0043-1354

  135. Elimination of Estrogens and Estrogenic Activity from Sewage Treatment Works Effluents in Subsurface and Surface Flow Constructed Wetlands Peer-reviewed

    H.L.Song, X.L.Yang, K.Nakano, M.Nomura, O.Nishimura, X.N. Li

    International Journal of Environmental Analytical Chemistry　91　(7-8)　600-614　2011

    DOI： 10.1080/03067319.2010.496046 　

  136. Characterization of the Carbon Stable Isotope Ratio and Fatty Acid Structure of Zostera japonica in Coastal Areas Peer-reviewed

    Yumi NAGAHAMA, Munehiro NOMURA, Megumu FUJIBAYASHI, Woo-seok SHIN, Osamu NISHIMURA

    Journal of Water and Environment Technology　9　(2)　101-109　2011

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jwet.2011.101 　

    ISSN： 1348-2165

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    Some researchers suggest that Zostera japonica has important roles as primary producers in tidal flat ecosystem. Recently, it is known that the methods involving tracers in stable isotope ratio analysis and fatty acid structures stand up to clarify the origin of organic matter. If these methods can be used, it would be possible to clarify the role of organic matter derived from Z. japonica. However, these methods cannot be used yet because the characteristics of stable isotope ratios and fatty acid structures in Z. japonica are not clear. The objectives of this research are the clarification of the characteristics of stable isotope ratio and fatty acid structure in Z. japonica. Moreover, the availability as tracer of organic matter origin was explored; and the characteristics of stable isotope and fatty acid structure of Z. japonica were compared with other primary producers in tidal flat. Results showed that Z. japonica contained large amounts of 18:2n6 and 18:3n3 and they were used as biomarkers of other seagrass-derived organic matter. In addition, Z. japonica also contained LCFAs, which is used as biomarker of terrestrial plants. These results show that LCFAs are not the only biomarkers that can be used to trace the organic matter in terrestrial plants.

  137. Organic Matter Sources in Sediments of Zostera japonica Beds and Nearby Sandy Areas Peer-reviewed

    Yumi NAGAHAMA, Ryo NAKAYAMA, Woo-Seok SHIN, Megumu FUJIBAYASHI, Munehiro NOMURA, Osamu NISHIMURA

    J.JSCE,Ser.G(Environmental Research)　67　(7)　Ⅲ_117-Ⅲ_122　2011

  138. 下水処理場の水処理プロセスにおけるメタン発生量の定量化手法に関する検討 Peer-reviewed

    増田周平, 鈴木俊輔, 李玉友, 西村修

    下水道協会誌　48　(588)　119-126　2011

  139. 嫌気好気活性汚泥法を行なう下水処理場における冬期のCH4・N2Oの発生特性 Peer-reviewed

    増田周平, 京野貴文, 李 玉友, 西村 修

    用水と廃水　52　(11)　903-911　2010/11

  140. Effect of Photosynthesis of Benthic Microalgae on Decomposition of Sedimentary Organic Matter in Tidal Flat Peer-reviewed

    M.Akutsu, S.Takechi, W.S.Shin, M.Nomura, K.Nakano, O.Nishimura

    Environmental Engineering Research, JSCE　47　237-242　2010/11

  141. 秋田港の港内長周期波対策施設における生物共生効果 Peer-reviewed

    長濱裕美, 西村修, 増田周平, 小澤敬二, 原田久志, 川崎貴之

    環境工学研究論文集　47　229-235　2010/11

  142. 嫌気好気活性汚泥法を行う下水処理場における冬季のCH4・N2Oの発生特性 Peer-reviewed

    増田周平, 京野貴文, 李玉友, 西村修

    用水と廃水　52　(11)　53-61　2010/11

  143. Start-up Water Purification Performance of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Run-off Peer-reviewed

    K.Nakano, J.Chigira, H.L.Song, T.Yano, M.Nomura, Y.Aikawa, O.Nishimura

    Proceedings of 12th International Conference on Wetland Systems for Water Pollution Control　1　699-707　2010/10

  144. Evaluation of Food Sources Quality for Pond Snail, Bellamya chinensis Based on Essential Fatty Acids Requirements Peer-reviewed

    M.Fujibayashi, W.S.Shin, Y.Nagahama, N.Chiba, M.Nomura, K.Nakano, O.Nishimura

    Program of 31st Congress of the International Limnological Society　2010/08

  145. An integrated ecological floating-bed employing plant, freshwater clam and biofilm carrier for purification of eutrophic water

    Xian Ning Li, Hai Liang Song, Wei Li, Xi Wu Lu, Osamu Nishimura

    Ecological Engineering　36　(4)　382-390　2010/04

    DOI： 10.1016/j.ecoleng.2009.11.004 　

    ISSN： 0925-8574

  146. 水処理工程におけるN2Oの発生特性 Peer-reviewed

    増田 周平, 西村修

    用水と廃水　52　(3)　41-54　2010/03

  147. The origin of sediment organic matters at tidal flat in estuary Peer-reviewed

    Woo-Seok Shin, Yong-Doo Lee, Megumu FUJIBAYASHI, Yumi NAGAHAMA, Munehiro NOMURA, Osamu NISHIMURA

    Journal of KSEE　32　(1)　1177-1184　2010

  148. Essential Fatty Acids Requirement of Pond Snai, Bellamya chinensis Peer-reviewed

    Megumu FUJIBAYASHI, Woo-seok SHIN, Yumi NAGAHAMA, Kazunori NAKANO, Yoshio AIKAWA, Osamu NISHIMURA

    Environmental Engineering Research　47　9-14　2010

  149. Seasonal Variation of Food Vources on Bivalve and Nereidae in Estuary Tidal Flat Peer-reviewed

    Woo-seok SHIN, Megumu FUJIBAYASHI, Yumi NAGAHAMA, Munehiro NOMURA, Kazunori NAKANO, Osamu NISHIMURA

    Environmental Engineering Research　47　223-228　2010

  150. Evaluation of the Long Period Wave Absorbing Sea Wall in Akita-port as Habitat for Nektons and Seaweeds Peer-reviewed

    Yumi NAGAHAMA, Osamu NISHIMURA, Shuhei MASUDA, Keiji KOZAWA, Hisashi HARADA, Takayuki KAWASAKI

    Environmental Engineering Research　47　229-235　2010

  151. ダム貯水池におけるアオコ発生に及ぼすAnabaena spp.の休眠細胞の影響 Peer-reviewed

    土田幹隆, 野村宗弘, 増田周平, 千葉信男, 藤本尚志, 中野和典, 西村 修

    環境工学研究論文集　46　75-79　2009/11

  152. Morphological Identification and Phylogenetic Evaluation of the Cyanobacterium Anabaena Isolated from Urushizawa Dam and other Lakes and Reservoirs Peer-reviewed

    N.Fujimoto, Y.Satoh, M.Ohkuni, S.Aso, A.Ohnishi, M.Suzuki, M.Nomura, O.Nishimura

    Journal of Japan Society on Water Environment　32　(9)　501-504　2009/09

    DOI： 10.2965/jswe.32.501 　

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  153. Characteristics of Allelochemicals Released from Brown Alga Sargassum horneri Peer-reviewed

    F.Takeda, C.Matsuo, M.Nomura, K.Nakano, O.Nishimura

    Proceedings of the Third International Conference on Estuaries and Coasts　411-418　2009/09

  154. Estrogen removal from treated municipal effluent in small-scale constructed wetland with different depth Peer-reviewed

    Hai Liang Song, Kazunori Nakano, Takashi Taniguchi, Munehiro Nomura, Osamu Nishimura

    Bioresource Technology　100　(12)　2945-2951　2009/06

    DOI： 10.1016/j.biortech.2009.01.045 　

    ISSN： 0960-8524

  155. Allelopathy by Emergent Plants Inhibiting Growth of Microcystis Peer-reviewed

    F.Takeda, M.Nomura, K.Nakano, O.Nishimura, Y.Shimada, S.Fukuro, H.Tanaka, Y.Inamori

    Journal of Water and Waste　51　(6)　477-483　2009/06

    Publisher:

    ISSN： 0513-5907

  156. Microbial Degradation Characteristics of Fatty Acids of Macroalgae, Microalgae and Marsh Vegetation Peer-reviewed

    W.S.Shin, M.Fujibayashi, Y.Nagahama, S.Takechi, M.Nomura, K.Nakano, O.Nishimura

    Meeting Program of ASLO Aquatic Sciences Meeting　57　2009/02

  157. Influence of the Organic matter Derived from Zostera japonica on Benthic Food Webs in Tidal Flat Peer-reviewed

    Y.Nagahama, M.Nomura, M.Fujibayashi, W.S.Shin, O.Nishimura

    Meeting Program of ASLO Aquatic Sciences Meeting　88　2009/02

  158. Identification of Food Sources of Pond Snail, Cipangopaludina chinensis malleata, using Fatty Acid Analysis Peer-reviewed

    M.Fujibayashi, W.S.Shin, Y.Nagahama, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

    Meeting Program of ASLO Aquatic Sciences Meeting　127　2009/02

  159. 浅海域における有機物フローに関わる物理・化学過程 Peer-reviewed

    坂巻隆史, 西村修

    沿岸海洋研究　(47)　11-18　2009

  160. Analysis of Organic Matters Transportation by Stable isotope and Fatty acids in Benthic Ecosystems of Zostera Japonica Meadows Peer-reviewed

    Yumi NAGAHAMA, Munehiro NOMURA, Megumu FUJIBAYASHI, Woo-Seok SHIN, Kazunori NAKANO, Osamu NISHIMURA

    PProceedings of the third international conference on estuaries and coasts　1　329-335　2009

  161. Estimation of origin of sediment organic matters in Tidal flat by Acid Decomposability Peer-reviewed

    Woo-Seok Shin, Megumu Fujibayashi, Yumi Nagahama, Munehiro Nomura, Kazunori Nakano, Osamu Nishimura

    Proceedings of the third international conference on estuaries and coasts　1　373-379　2009

  162. Evaluation of extremely shallow vertical subsurface flow constructed wetland for nutrient removal Peer-reviewed

    T. Taniguchi, K. Nakano, N. Chiba, M. Nomura, O. Nishimura

    Water Science and Technology　59　(2)　293-301　2009

    DOI： 10.2166/wst.2009.853 　

    ISSN： 0273-1223

  163. Differences in adsorption mechanisms of heavy metal by two different plant biomasses: Reed and brown seaweed Peer-reviewed

    B. Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

    Water Science and Technology　59　(2)　339-346　2009

    DOI： 10.2166/wst.2009.867 　

    ISSN： 0273-1223

  164. Is sediment mud content a significant predictor of macrobenthos abundance in low-mud-content tidal flats? Peer-reviewed

    T. Sakamaki, O. Nishimura

    Marine and Freshwater Research　60　(2)　160-167　2009

    DOI： 10.1071/MF08173 　

    ISSN： 1323-1650

  165. 豚舎排水を処理する回分式活性汚泥法におけるN2Oの発生特性 Peer-reviewed

    西村修, 増田周平, 五ノ井浩二, 原田茂樹, 水落元之, 稲森悠平

    日本水処理生物学会誌　45　(1)　13-22　2009

    Publisher:

    DOI： 10.2521/jswtb.45.13 　

    ISSN： 0910-6758

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  166. ディスポーザ排水導入が嫌気・好気循環方式生活排水処理システムに及ぼす影響 Peer-reviewed

    山崎宏史, 鈴木理恵, 井上廣輝, 稲森悠平, 蛯江美孝, 西村修

    下水道協会誌　46　(559)　97-107　2009

    Publisher:

    ISSN： 0917-8252

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  167. N2Oを指標とした無酸素好気回分式活性汚泥法の制御手法 Peer-reviewed

    増田周平, 野村宗弘, 千葉信男, 中野和典, 西村修, 水落元之, 稲森悠平

    水環境学会誌　32　(3)　147-152　2009

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.32.147 　

    ISSN： 0916-8958

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  168. Application of food assimilation analysis using fatty acids composition of pond snails originating from the Izunuma area

    Megumu Fujibayashi, Kazunori Nakano, Nobuo Chiba, Munehiro Nomura, Osamu Nishimura

    Izunuma-Uchinuma Wetland Researches　2　(0)　27-33　2008

    Publisher: 公益財団法人 宮城県伊豆沼・内沼環境保全財団

    DOI： 10.20745/izu.2.0_27 　

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    &lt;p&gt;Three pond snails, &lt;i&gt;Cipangopaludina japonica&lt;/i&gt;, &lt;i&gt;C. chinensis malleata&lt;/i&gt;, and &lt;i&gt;Sinotaia quadrata histrica,&lt;/i&gt; were collected from different habitats in the Izunuma area. We analyzed their fatty acids composition for inferring food assimilation. Although each pond snail lives in a different habitat, fatty acids composition for each snail showed similar patterns, and high contributions of green algae, cyanobacteria, and bacteria fatty acids were detected. This indicated each pond snail has similar food assimilation tendencies. Though each pond snail has a potential to live in either pond, rice field, or river habitat, the coexistence of three pond snails rarely occurs. This might be a result of exclusive competition for food caused by same food preferences.&lt;/p&gt;

  169. 養豚場排水処理施設におけるエストロゲンの季節変動と低減化処理の実態 Peer-reviewed

    任 勇翔, 中野和典, 千葉信男, 大堀雅人, 千葉信男, 野村 宗弘, 西村修

    日本水環境学会誌　31　(3)　155-161　2008

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.31.155 　

    ISSN： 0916-8958

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    An investigation on the seasonal change and removal of estrogen in a swine wastewater treatment plant was carried out from July 2004 to September 2005. Natural estrogens (estrone, estradiol and estriol) in raw wastewater showed similar seasonal changes and their peak values reached 162, 872, 4,480 ng · l-1, respectively, whereas equol showed a different trend in which the maximum concentration was markedly high at 43,300 ng · l-1. The results showed that approximately 93% of the total estrogenicity in raw wastewater was attributed to equol. The sequencing batch reactor (SBR) process of the swine wastewater treatment plant was efficient to remove selected estrogens for quantitative analysis as well as nitrogen and phosphate. Moer than 99% removal efficiencies for all selected estrogens and total estrogenicity were attained by the SBR process. The total estrogenicity that remained after the SBR process was, however, still higher than the predicted noneffective concentration level for fish (PNEC). It was found that a baffle channel located at the final stage of the treatment flow contributed to decreasing the estrogenicity to the PNEC level. Experimental results in the laboratory showed that filamentous algae inhabiting the bottom of the channel were responsible for the estrogenicity decrease observed in the baffle channel.

  170. 七北田河口の3つの干潟における堆積有機物の起源とその特徴 Peer-reviewed

    Woo-Seok SHIN, 藤林 恵, 野村宗弘, 中野和典, 西村 修

    環境工学研究論文集　45　(0)　547-552　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.547 　

    ISSN： 1341-5115

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  171. 宮城県内の畜産地帯を流域とする河川における薬剤耐性菌分布の実態 Peer-reviewed

    中尾江里, 中野和典, 野村宗弘, 千葉信男, 西村 修, 渡邉 節, 中村朋之, 畠山 敬

    環境工学研究論文集　45　(0)　187-194　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.187 　

    ISSN： 1341-5115

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    6

  172. 藻類を用いた生態影響評価試験における新バイオアッセイ手法と既往手法の比較 Peer-reviewed

    武田文彦, 塩入万莉子, 野村宗弘, 中野和典, 西村 修

    環境工学研究論文集　45　(0)　163-168　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.163 　

    ISSN： 1341-5115

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  173. ポリフェノールのMicrocystis aeruginosaに対するアレロパシー効果の新たなバイオアッセイ手法による評価 Peer-reviewed

    塩入万莉子, 武田文彦, 千葉信男, 野村宗弘, 中野和典, 西村 修

    環境工学研究論文集　45　(0)　157-162　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.157 　

    ISSN： 1341-5115

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  174. 漆沢ダム湖におけるアオコ発生メカニズムに関する検討 Peer-reviewed

    増田周平, 野村宗弘, 坪根史佳, 千葉信男, 藤本尚志, 中野和典, 西村 修

    環境工学研究論文集　45　(0)　103-112　2008

    DOI： 10.11532/proes1992.45.103 　

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  175. 海岸侵食に伴って形成される海底環境が底生動物と底生魚類に与える影響 Peer-reviewed

    長濱祐美, 大嶌理照, 吉河秀郎, 根元謙次, 西村修, 木村賢史

    環境工学研究論文集　45　(0)　89-95　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.89 　

    ISSN： 1341-5115

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  176. コアマモの生育に与える干出時間及び底質の影響 Peer-reviewed

    池上裕輔, 野村宗弘, 長濱祐美, 中野和典, 西村 修

    環境工学研究論文集　45　(0)　81-88　2008

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.45.81 　

    ISSN： 1341-5115

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  177. 清水港護岸に生息する付着生物の現状と微量金属の蓄積について Peer-reviewed

    鈴木良平, 大嶌理照, 野村宗弘, 西村 修, 木村賢史

    海洋開発論文集　24　(0)　315-320　2008

    Publisher:

    DOI： 10.2208/prooe.24.315 　

    ISSN： 0912-7348

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  178. マコモの生育基盤およびハクチョウの摂食がマコモの成長に与える影響 Peer-reviewed

    岩淵藍子, 中野和典, 千葉信男, 野村宗弘, 西村 修

    土木学会論文集G　64　(2)　123-131　2008

    DOI： 10.2208/jscejg.64.123 　

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  179. 干潟における底質有機物含有率の動的平衡性―干潟生態系再生への応用に関する考察 Peer-reviewed

    坂巻隆史, 西村修

    土木学会論文集 G　64　(3)　250-261　2008

    DOI： 10.2208/jscejg.64.250 　

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    6

  180. ディスポーザ排水の生物学的可溶化・資化反応特性 Peer-reviewed

    山崎宏史, 鈴木理恵, 蛯江美孝, 稲森悠平, 西村修

    日本水処理生物学会誌　44　(3)　149-159　2008

    Publisher:

    DOI： 10.2521/jswtb.44.149 　

    ISSN： 0910-6758

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    6

  181. ディスポーザ対応浄化槽のLCCO2評価 Peer-reviewed

    山崎宏史, 鈴木理恵, 蛯江美孝, 稲森悠平, 西村修

    日本水処理生物学会誌　44　(3)　129-138　2008

    DOI： 10.2521/jswtb.44.129 　

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    6

  182. Marine macroalga sargassum horneri as biosorbent for heavy metal removal: Roles of calcium in ion exchange mechanism Peer-reviewed

    B. Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

    Water Science and Technology　58　(3)　697-704　2008

    DOI： 10.2166/wst.2008.696 　

    ISSN： 0273-1223

  183. Differences in Adsorption Mechanism of Heavy Metal by Two Different Plant Biomass: Reed and Brown Seaweed Peer-reviewed

    B.Southichak, K.Nakano, M.Nomura, N.Chiba, O.Nishimura

    Proceedings of 2nd IWA-ASPIRE　012　2007/10

  184. Physical control of sediment carbon content in an estuarine tidal flat system (Nanakita River, Japan): A mechanistic case study Peer-reviewed

    Takashi Sakamaki, Osamu Nishimura

    Estuarine, Coastal and Shelf Science　73　(3-4)　781-791　2007/07

    DOI： 10.1016/j.ecss.2007.03.019 　

    ISSN： 0272-7714

    eISSN： 1096-0015

  185. Effects of bacterial activity on estrogen removal in nitrifying activated sludge Peer-reviewed

    Yong Xiang Ren, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

    Water Research　41　(14)　3089-3096　2007/07

    DOI： 10.1016/j.watres.2007.04.028 　

    ISSN： 0043-1354

  186. A thermodynamic analysis on adsorption of estrogens in activated sludge process Peer-reviewed

    Yong Xiang Ren, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

    Water Research　41　(11)　2341-2348　2007/06

    DOI： 10.1016/j.watres.2007.01.058 　

    ISSN： 0043-1354

  187. Removal pathway and influence factors of hydroponic bio-filter method for nitrogen and phosphorus

    Xian Ning Li, Hai Liang Song, Xi Wu Lu, Osamu Nishimura, Yuhei Inamori

    Huanjing Kexue/Environmental Science　28　(5)　982-986　2007/05

    ISSN： 0250-3301

  188. 脂肪酸分析によるタニシの食性解析

    藤林 恵, 中野 和典, 千葉 信男, 野村 宗弘, 西村 修

    日本陸水学会 講演要旨集　72　29-29　2007

    Publisher: 日本陸水学会

    DOI： 10.14903/jslim.72.0.29.0 　

  189. Control Parameters Influencing the Adsorption of Heavy Metals by Protonated Reed Biomass Peer-reviewed

    B.Southichak, K.Nakano, M.Nomura, N.Chiba, O.Nishimura

    Jour. Water Treatment Biology　43　(3)　159-167　2007

    Publisher:

    DOI： 10.2521/jswtb.43.159 　

    ISSN： 0910-6758

  190. 農地排水を流入させたヘチマ植栽浄化水路における遮光の効果 Peer-reviewed

    小舩内千恵, 中野和典, 千葉信男, 野村宗弘, 西村修

    日本水環境学会誌　30　(12)　715-722　2007

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.30.715 　

    ISSN： 0916-8958

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    The terrestrial plant Luffa cylindrica was applied to a surface-flow-constructed wetland (SFCW) to treat effluent from rice fields. To control the excessive growth of weeds that interfere with the maintenance of SFCWs, SFCWs with and without shading were constructed and the effect of shading was investigated. The average removal efficiencies of T-N and T-P for 135 day operation of the SFCW with shading were 57 and 53%, respectively, while in the case of those without shading were 44 and 41%, respectively. This result indicates that the nutrient removal efficiency was stimulated by shading. Although L. cylindrica completely dominated the SFCW with shading, the total plant biomass production including weeds was higher without shading. The total length of the roots in the SFCW with shading was, however, 2.2-fold that without shading. Consequently, it was suggested that the longer root length observed in SFCW with shading promoted the sedimentation of nutrients, resulting in a nutrient removal efficiency higher than that in the case without shading. These results demonstrate that shading is effective not only to control the growth of weeds but also to enhance the growth of roots in SFCWs, resulting in easier maintenance and a higher nutrient removal efficiency.

  191. 高温好気処理法によるヨシチップの利用可能性の評価 Peer-reviewed

    田 庚昊, 野村宗弘, 中野和典, 西村 修

    土木学会論文集G　63　(4)　216-223　2007

    DOI： 10.2208/jscejg.63.216 　

  192. コアマモ群落の環境特性と底生動物に及ぼす影響 Peer-reviewed

    長濱祐美, 野村宗弘, 中野和典, 木村賢史, 西村 修

    土木学会論文集G　63　(4)　2007

    DOI： 10.2208/jscejg.63.233 　

  193. 高温好気処理法における長期運転時の処理障害に関する研究 Peer-reviewed

    佐川正浩, 田 庚昊, 野村宗弘, 千葉信男, 中野和典, 西村 修

    環境工学研究論文集　44　167-174　2007

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.44.167 　

    ISSN： 1341-5115

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    The variation of physical properties of carrier and accumulation of salts in the thermophilic oxic process (TOP) reactor during long-term treatment of swine waste and their influence on decomposition rate of organic waste were examined. During long-term operation treatment test, the Dso of carrier became higher when inhibition of treatment was observed after continuous treatment for 100 days. Since the decomposition rate of organic waste could not be improved completely by destruction of massiveness of carrier, influence of salts accumulated in the reactor was considered not to be negligible. Massiveness of carrier and accumulation of salts during long-term operation of TOP resulted in also low ATP concentration in the reactor, revealing significance of these two factors on reducing microbial activity in the TOP reactor.

  194. 漆沢ダム貯水池におけるアオコ発生制御効果の検討 Peer-reviewed

    野村宗弘, 佐藤博信, 設楽和彦, 坪根史佳, 千葉信男, 藤本尚志, 中野和典, 西村 修

    環境工学研究論文集　44　525-530　2007

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.44.525 　

    ISSN： 1341-5115

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    Field survey has been carried out to investigate the water-bloom control effect based on characteristics of water quality stratification in Urushizawa dam reservoir without the pollutant load source in the basin. Water quality prediction model which could reproduce stratification and fluctuation of Chl.a approximately was able to be constructed by considering inflow of the river water and intake of the dam water. As a result of examining the intake method, it was found that Chl.a might be increased by supplying nutrient from the lower layer to the surface, though to decrease Chl.a by intake of surface water was effective.

  195. Dynamic equilibrium of sediment carbon content in an estuarine tidal flat: Characterization and mechanisms Peer-reviewed

    Takashi Sakamaki, Osamu Nishimura

    Marine Ecology Progress Series　328　29-40　2006/12/20

    DOI： 10.3354/meps328029 　

    ISSN： 0171-8630

  196. Phragmites australis: A novel biosorbent for the removal of heavy metals from aqueous solution Peer-reviewed

    Bounheng Southichak, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

    Water Research　40　(12)　2295-2302　2006/07

    DOI： 10.1016/j.watres.2006.04.027 　

    ISSN： 0043-1354

  197. Tidal time-scale variation in nutrient flux across the sediment-water interface of an estuarine tidal flat Peer-reviewed

    Takashi Sakamaki, Osamu Nishimura, Ruichi Sudo

    Estuarine, Coastal and Shelf Science　67　(4)　653-663　2006/05

    DOI： 10.1016/j.ecss.2006.01.005 　

    ISSN： 0272-7714

  198. Studies on the reactor-comparting enhancing the nitrification property of biologic contact oxidation

    Xian Ning Li, Hai Liang Song, Xi Wu Lu, Osamu Nishimura

    Zhongguo Huanjing Kexue/China Environmental Science　26　(1)　62-66　2006/02

    ISSN： 1000-6923

  199. Nutrient Removal from Eutrophic lake Water by a Constructed Wetland Channel Planting with Luffa cylindrica Peer-reviewed

    K.Nakano, T.Kawasaki, M.Nomura, N.Chiba, O.Nishimura

    J. Environ. Syst. and Eng., JSCE　7　(38)　61-68　2006/02

    Publisher:

    DOI： 10.2208/jscejg.62.105 　

    ISSN： 0289-7806

  200. ヘチマ植栽水路による富栄養化湖沼水の水質浄化特性 Peer-reviewed

    中野和典, 川崎剛, 野村宗弘, 千葉信男, 西村修

    土木学会論文集Ｇ　62　(1)　105-112　2006

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscejg.62.105 　

    ISSN： 1880-6082

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    Nutrient removal ability of a constructed wetland channel planting with Luffa cylindrica was examined for eutrophic lake water. The DIP removal by the channel was expressed as primary reaction with a reaction rate constant of 20.8 day-1. Nutrient absorbed by filamentous green algae (FGA) breeding in the channel occupied 67 and 90 % of total DIN and DP removed in the channel, revealing the significance of FGA in the nutrient removal. Since the FGA existed around the root of L. cylindrica, it could be considered that L. cylindrica contributed to support the inhabitation of FGA. High nutrient removal ability despite low nutrient concentration in the lake water demonstrates the applicability of the channel planting L. cylindrica on direct nutrient removal from eutrophic lake water.

  201. 底質性状の異なる干潟の生物学的炭素収支 Peer-reviewed

    小川葉子, 坂巻隆史, 野村宗弘, 中野和典, 西村修

    土木学会論文集Ｇ　62　(3)　278-286　2006

    DOI： 10.2208/jscejg.62.278 　

  202. 嫌気・好気高循環排水処理システムの窒素除去特性と運転操作条件の関係解析 Peer-reviewed

    山崎宏史, 西村修, 鈴木理恵, 清水康利, 蛯江美孝, 稲森悠平

    日本水処理生物学会誌　42　(3)　151-157　2006

    Publisher:

    DOI： 10.2521/jswtb.42.151 　

    ISSN： 0910-6758

  203. Pb(II) biosorption on reed biosorbent derived from wetland: Effect of pretreatment on functional groups Peer-reviewed

    Bounheng Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

    Water Science and Technology　54　(10)　133-141　2006

    DOI： 10.2166/wst.2006.788 　

    ISSN： 0273-1223

  204. Assimilable organic carbon formation from algogenic organic matter and its variation by chlorination Peer-reviewed

    J. Kim, S. Lee, S. Xu, M. Akiba, M. Nomura, N. Chiba, K. Nakano, O. Nishimura

    Water Science and Technology: Water Supply　6　(2)　239-244　2006

    DOI： 10.2166/ws.2006.075 　

    ISSN： 1606-9749

  205. Adsorption and Biodegradation Characteristics of Musty Odorous Compounds, 2-Methylisobormeol and Geosmin Peer-reviewed

    N. Sugiura, K. Okano, P. Bremdan, M. Utsumi, Y. Inamori, O. Nishimura, R. Sudo

    Japanese Journal of Water Treatment Biology　42　(2)　85-91　2006

    Publisher:

    DOI： 10.2521/jswtb.42.85 　

    ISSN： 0910-6758

  206. Factors affecting dissolved nitrogen and phosphorus by hydroponic bio-filter method

    Xianning Li, Hailiang Song, Xiwu Lu, Osamu Nishimura, Yuhei Inamori

    Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition)　35　(5)　792-796　2005/09

    ISSN： 1001-0505

  207. Aerobic biodegradation behavior of nonylphenol polyethoxylates and their metabolites in the presence of organic matter Peer-reviewed

    Shinya Hayashi, Shigeo Saito, Ju Hyun Kim, Osamu Nishimura, Ryuichi Sudo

    Environmental Science and Technology　39　(15)　5626-5633　2005/08/01

    DOI： 10.1021/es048857+ 　

    ISSN： 0013-936X

  208. 植栽基盤の深さがヨシの根の形態および窒素除去能力に及ぼす影響 Peer-reviewed

    中野和典, 松井健良, 藤林恵, 千葉信男, 野村宗弘, 西村修

    用水と廃水　47　(8)　687-694　2005/08

    Publisher:

    ISSN： 0513-5907

  209. 湿地生態系に出現するタニシが付着藻類および浮遊藻類に与える影響 Peer-reviewed

    藤林恵, 中野和典, 千葉信男, 野村宗弘, 西村修

    用水と廃水　47　(8)　681-686　2005/08

    Publisher:

    ISSN： 0513-5907

  210. Beneficial Reuse of Reed from Constructed Wetland as a New Biosorbent for Heavy Metal Removal from Aqueous Solution Peer-reviewed

    B.Southichak, N.Chiba, K.Nakano, M.Nomura, O.Nishimura

    Proceedings of 1st IWA-ASPIRE　8F-2　2005/07

  211. Potential of nitrification and denitrification in water purification system with hydroponic bio-filter method

    Xian Ning Li, Xi Wu Lu, Hai Liang Song, Nishimura Osamu, Inamori Yuhei

    Huanjing Kexue/Environmental Science　26　(2)　93-97　2005/03

    ISSN： 0250-3301

  212. Effect of potential allelochemicals extracted from Sargassum horneri on the growth of red tide microalgae

    UCHIDA Takuji, TAKEDA Fumihiko, SAKAMAKI Takashi, XU Kaiqin, CHIBA Nobuo, NISHIMURA Osamu, SUDO Ryuichi

    Doboku Gakkai Ronbunshu　(783)　71-74　2005/02/22

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscej.2005.783_71 　

    ISSN： 0289-7806

  213. Allelopathic effect shown by seawater from sargassum horneri bed on the growth of skeletonema costatum Peer-reviewed

    Fumihiko Takeda, Nobuo Chiba, Munehiro Nomura, Kazunori Nakano, Osamu Nishimura

    Proceedings of the 7th International Conference on the Mediterranean Coastal Environment, MEDCOAST 2005　1　601-610　2005

  214. 廃棄物投入サイクルの短縮による高温好気処理の改善効果 Peer-reviewed

    濱中俊輔, 田庚ほ, 伊藤史雄, 千葉信男, 中野和典, 西村修

    土木学会論文集　(783/VII-34)　51-59　2005

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscej.2005.783_51 　

    ISSN： 0289-7806

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    To improve treatment efficiency of thermophilic oxic process (TOP) treating swine waste, the effect of shortening the waste-input cycle was examined. By shortening the waste-input cycle from 24 h to 8 h, the maximum loading rate of swine waste per day could be improved 2.3 times and necessary amount of auxiliary heat source was reduced. A high temperature in the reactor maintained by shortening the waste-input cycle was found to contribute to stimulate the activity of thermophilic bacteria, resulting in improvement of treatment efficiency and reduction of necessary auxiliary heat source. A long term TOP operated by 8 h cycle for waste-input with an optimal auxiliary heat source addition confirmed the treatment feasibility of TOP during 120 cycle (for 40 days) concerning treatment efficiency and maintenance of moisture content in the reactor. This study demonstrated several merits of shortening the waste-input cycle of TOP.

  215. 単細胞緑藻Chlamydomonas reinhardtiiと甲殻類Daphnia magnaの運動性に対するアルキルフェノール類の影響 Peer-reviewed

    田中仁志, 須藤隆一, 西村修, 中村省吾

    水環境学会誌　28　(5)　333-338　2005

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.28.333 　

    ISSN： 0916-8958

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    The EC50 value of several alkylphenols (APs) on the swimming velocity of unicellular green algae Chlamydomonas reinhardtii was measured and its relationship with the octanol⁄water partition coefficient (Pow) of APs was investigated. To clarify the sensitivity of C. reinhardtii to APs, the EC50 value was compared with that for crustacea Daphnia magna, a standard species for motility toxicology tests. As a result, there is a strong correlation (r=0.96) between the log Pow of APs and the log EC50 value for C. reinhardtii. The log EC50 value for C. reinhardtii strongly correlated (r=0.98) with that for D. magna and the sensitivities of C. reinhardtii and D. magna were almost equivalent when the log Pow of APs were large. These results confirm the reliability of the toxic evaluation of APs from the endpoint of the swimming velocity reduction test using C. reinhardtii. This method requires only 1 hour for evaluation, enabling a rapid and convenient bioassay for testing the acute toxicity of environmental pollutants in waters.

  216. 漆沢ダム湖におけるアオコ発生に関わる水質構造解析 Peer-reviewed

    設楽和彦, 野村宗弘, 千葉信男, 藤本尚志, 中野和典, 西村 修

    環境工学研究論文集　42　487-493　2005

    DOI： 10.11532/proes1992.42.487 　

  217. 蒲生干潟における干潟堆積物－直上水間の有機物輸送特性 Peer-reviewed

    幸福 智, 坂巻隆史, 野村宗弘, 市村 康, 木村賢史, 西村 修

    環境工学研究論文集　42　305-314　2005

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.42.305 　

    ISSN： 1341-5115

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    Field observation has been carried out to evaluate the relationship between sedimentand transportation characteristic of organic matter by calculating the organic carbon flux of sediment per day at the different sediment area of Gamo tideland during November, 2003. From the results, the settling of organic matter per day in sand area was confirmed. The filter feeder was considered to effect the settling of particle matter. The settling of organic matter in mud area and the erosion of organic matter in sand-mud area per day were occurred. As the result, the balance of organic substance in sand-mud sediment area was decreased. In addition, by using Acoustic Doppler Current Profiler (ADCP) for evaluating the transportation characteristic in short time of particle matter, it was found that the erosion was occurred rapidly at the high current velocity of flood tide while the settling was occurred at the low current velocity.

  218. 干潟・浅場におけるマクロベントスの種多様性予測・評価手法の開発 Peer-reviewed

    島多義彦, 西村 修, 野村宗弘, 中村由行, 木村賢史, 市村 康, 袋 昭太

    海岸工学論文集　52　1166-1170　2005

    Publisher:

    DOI： 10.2208/proce1989.52.1166 　

    ISSN： 0916-7897

  219. 人工ヨシ湿地における植栽基盤が下水処理水の栄養塩除去に及ぼす影響 Peer-reviewed

    國枝晴子, 李 先寧, 山田一裕, 千葉信男, 野村宗弘, 中野和典, 西村 修, 須藤隆一

    日本水処理生物学会誌　41　(2)　93-101　2005

    DOI： 10.2521/jswtb.41.93 　

  220. 水耕生物ろ過法における水面積負荷及び収穫の浄化機能に及ぼす影響と隔離水界を用いた浄化効果の評価 Peer-reviewed

    李先寧, 稲石高雄, 中里広幸, 野村宗弘, 西村 修, 稲森悠平, 須藤隆一

    日本水処理生物学会誌　41　(2)　61-71　2005

    DOI： 10.2521/jswtb.41.61 　

  221. 三保海岸における海岸浸食の実態と底生生物に及ぼす影響の把握, Peer-reviewed

    木村賢史, 根元謙次, 長濱祐美, 吉河秀郎, 西村 修

    海洋開発論文集　21　229-234　2005

    Publisher:

    DOI： 10.2208/prooe.21.229 　

    ISSN： 0912-7348

  222. Algae removal property of hydroponic bio-filter method

    Xian Ning Li, Xi Wu Lu, Hai Liang Song, Nishimura Osamu, Inamori Yuhei

    Zhongguo Huanjing Kexue/China Environmental Science　24　(6)　697-701　2004/12

    ISSN： 1000-6923

  223. Biosorption of Copper(II), Cadmium(II), Nickel(II), Lead(II) and Zinc(II) from Aqueous Solution by Reed Biomass Peer-reviewed

    B.Southichak, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

    Proceedings of 10th Asian Pacific Confederation of Chemical Engineering Congress　2004/10

  224. Simulation Analysis of Swine Wastewater Decomposition in Thermophilic Oxic Process Peer-reviewed

    K.H.Jeon, M.Nomura, K.Nakano, O.Nishimura

    Proceedings of 4th IWA World Water Congress and Exhibition　2004/09

  225. EFFECTS OF HYDROLOGICIC FLUCTUATIONS ON THE TRANSPORT OF FINE PARTICULATE ORGANIC MATTER IN THE NANAKITA RIVER Peer-reviewed

    Sitang PILAILAR, Takashi SAKAMAKI, Yuko HARA, Norihiro IZUMI, Hitsoshi TANAKA, Osamu NISHIMURA

    Annual Journal of Hydraulic Engineering, JSCE　48　1519-1524　2004

    DOI： 10.2208/prohe.48.1519 　

  226. Effect of C/N ratio on nitrous oxide emission from swine wastewater treatment process Peer-reviewed

    Naohiro Kishida, J. H. Kim, Y. Kimochi, O. Nishimura, H. Sasaki, R. Sudo

    Water Science and Technology　49　(5-6)　359-365　2004

    DOI： 10.2166/wst.2004.0775 　

    ISSN： 0273-1223

  227. Enhanced nitrogen removal using C/N load adjustment and real-time control strategy in sequencing batch reactors for swine wastewater treatment Peer-reviewed

    M. Chen, J. H. Kim, N. Kishida, O. Nishimura, R. Sudo

    Water Science and Technology　49　(5-6)　309-314　2004

    DOI： 10.2166/wst.2004.0769 　

    ISSN： 0273-1223

  228. 擬似嫌気好気法を行う下水処理場におけるＮ２Ｏの排出特性 Peer-reviewed

    五ノ井浩二, 増田周平, 西村修, 水落元之, 稲森悠平

    下水道協会誌　41　(501)　125-133　2004

    Publisher:

    ISSN： 0917-8252

  229. 水道水源における同化性有機炭素の動態に関する基礎的研究 Peer-reviewed

    金志勲, 許春蓮, 秋葉道宏, 宮川徹也, 千葉信男, 西村修, 西村哲治, 安藤正典

    水道協会雑誌　(842)　11-18　2004

  230. Biological Effects on Organic Matter Dynamics in Tidal Flat Peer-reviewed

    O.Nishimura, T.Sakamaki, M.Nomura

    Proceedings of 6th International Conference on the Mediterranean Coastal Environment, MEDCOAST’03　813-824　2003/10

  231. Structure of a Small Estuarine Tidal Flat Peer-reviewed

    T.Sakamaki, Y.Ogawa, M.Nomura, O.Nishimura

    Proceedings of 6th International Conference on the Mediterranean Coastal Environment, MEDCOAST’03　805-812　2003/10

  232. 藻類生長阻害試験による水田地帯を流下する河川の生態影響評価 Peer-reviewed

    田中仁志, KIM J-H, 斉藤茂雄, 海渡ゆり子, 佐々木弘, 西村修

    用水と廃水　45　(8)　743-750　2003/08

    Publisher:

    ISSN： 0513-5907

  233. The characteristics change of fine particulate organic matter due to a flood in the Nanakita River Peer-reviewed

    S. Pilailar, T. Sakamaki, N. Izumi, H. Tanaka, O. Nishimura

    Journal of Hydroscience and Hydraulic Engineering　(47)　1306-1610　2003

    DOI： 10.2208/prohe.47.1033 　

  234. Relationship between Shape Characteristics of Contact Media Used in Biofilm Oxidation Processes and Purification Capability in Rivers and Streams Peer-reviewed

    HIROSHI NISHIMURA, YUHEI INAMORI, KAI-QIN XU, OSAMU NISHIMURA, RYUICHI SUDO

    Jpn. Jour. Water Treat. Biol.　39　(2)　49-57　2003

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.39.49 　

    ISSN： 0910-6758

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    The present study is aimed at clearly understanding the relationship among the arrangement of the gravel, the flow rate, and the porosity of the contact media, and the purification capability, which should be effective for a multi-natural type river restoration. Experimental studies were carried out by filling a linear circulation water passage (rated at a grade of 1/830, 30m long, 24cm wide, and 9cm deep, with a Stone type contact media or a net type contact media, whereby the biofilm attachment capability, the filling conditions and the flow rate were varied.<BR>The organic material removal capability differed depending upon the roughness coefficient of the flow passage; the greater the contact provided for the contact media, the higher the purification capability on contact with the biofilm; but it was found that the purification velocity would not improve, even when the amount of attached biofilm per unit contact media was increased to an extremely high level. This means that as the biofilm thickness increases, the porosity decreases so as to cause the decrease of the flow rate through the filled layer. In order to improve nitrification capability, it is necessary to establish the critical flow rate through the filled layer at above 5cm⋅s-1. On the other hand, for the nutrient removal (denitrification), it is important to have a greater amount of biofilm and to keep an anaerobic condition inside the biofilm. Therefore, it is important to make the proper combination of the rapids and pools in the biofilm processes in the rivers and streams.

  235. Improvement of Nitrogen Removal Efficiency of an Anaerobic Filter-Aerobic Biological Filtration Process by Using Nitrifying Bacteria Immobilized Pellets Peer-reviewed

    MITSURU INOUE, YASUHIRO YAMAMOTO, OSAMU NISHIMURA, YUHEI INAMORI, RYUICHI SUDO

    Jpn. Jour. Water Treat. Biol.　39　(3)　99-107　2003

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.39.99 　

    ISSN： 0910-6758

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    In order to improve nitrogen removal efficiency, an anaerobic filter-aerobic biological filtration process was modified by filling. with nitrifying bacteria immobilized carrier made of polyethylene-alcohol (immobilized pellets) as a media for biological filtration tank. The effect of water temperature on T-N removal efficiency was investigated.<BR>When aeration was performed so that the immobilized pellets were fluidized above the ceramic carrier filled in the biological filtration tank, T-N was successfully removed. T-N removal efficiency was increased by increasing the filled ratio of immobilized pellets by replacing a portion of the ceramic carrier at the water temperature of 10°C. Conversely, the removal efficiency was lower when the filled ratio of immobilized pellets was 60%, due to the increase of suspended solids in the effluent. Therefore, a proper filled ratio of immobilized pellets was thought to be about 50%.<BR>The nitrification rate at the water temperature of 5°C was 17 mg·l-1·h-1 for the immobilized pellets and 3.9 mg·l-1·h-1 for the ceramic carrier, thus the nitrification rate of the former was 4.4 times that of the latter. Removal rates of the inflow carbon and nitrogen were 72% as carbon dioxide and 65% as nitrogen gas, respectively.

  236. EFFECTS OF POTENTIAL ALLELOCHEMICALS EXTRACTED FROM SARGASSUM HORNERI ON THE GROWTH OF RED TIDE MICROALGAE Peer-reviewed

    Fumihiko TAKEDA, Takashi SAKAMAKI, Kaiqin XU, Nobuo CHIBA, Osamu NISHIMURA, Ryuichi SUDO

    J. Environ. Syst. and Eng., JSCE　VII-29.　(748)　25-32　2003

    DOI： 10.2208/jscej.2003.748_25 　

  237. Effect of wave-induced current on algal community development on artificial reefs, Peer-reviewed

    Kimihoto Inoue, Hitoshi Tanaka, Osamu Nishimura, Satoshi Baba

    Proceedings of 13th APD-IAHR Congress　892-897　2002/08

  238. Development of Phosphorus Removal Process of On-site Domestic Wastewater Treatment Systems Using Dripping Method of Thick Iron Solution Peer-reviewed

    YASUHIRO YAMAMOTO, MITSURU INOUE, OSAMU NISHIMURA, YUHEI INAMORI, MASATOSHI MATSUMURA

    Jpn. Jour. Water Treat. Biol　38　29-38　2002

    DOI： 10.2521/jswtb.38.29 　

  239. 海草アマモの葉条部及び根茎部の栄養塩吸収・溶出機能 Peer-reviewed

    井上公人, 西村修, 須藤隆一, 田中仁

    日本沿岸域学会論文集　14　115-123　2002

  240. 室内実験及び現場隔離水塊実験による大型海藻アカモクSargassum horneriの栄養塩吸収特性の評価 Peer-reviewed

    梶浦建樹, 坂巻隆史, 佐々木久雄, 千葉信男, 西村修, 須藤隆一

    日本沿岸域学会論文集　14　125-136　2002

  241. 人工干潟における水質浄化機能に関する解析 Peer-reviewed

    木村賢史, 市村康, 坂巻隆史, 西村修, 稲森悠平, 木幡邦男, 須藤隆一

    海岸工学論文集　49　1306-1310　2002

    Publisher:

    DOI： 10.2208/proce1989.49.1306 　

    ISSN： 0916-7897

  242. 干潟モデル実験装置を用いたベントス相の異なる干潟生態系の有機物動態の比較 Peer-reviewed

    坂巻隆史, 西村修, 須藤隆一

    環境工学研究論文集　39　209-218　2002

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.39.209 　

    ISSN： 1341-5115

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    The experimental study was conducted with model equipment in order to assess influence of benthic biota on organic matter dynamics in tidal flat. In the experiment, four different biota ecosystems were prepared; shaded system, unshaded system, unshaded and polychaete released system, and unshaded and bivalve released system. Throughout the experiment, the amount of organic matter in sediment tended to increase. The accumulation rate of organic matter was different among the systems. The accumulation rate was greatly higher in shaded system than the other unshaded systems. This result suggests that the effect of benthic microalgae on bacterial organic matter degradation with its supplying oxygen and extracellular matabolite was much greater than that of macrobenthos. Filter feeding by bivalve inhibited the accumulation of organic matter in sediment, which was attributed to decreasing deposition, and respiration and the growth of bivalve. Moreover, bivalve predominance enhanced the productivity of attached algae because of activation of PO4-P regeneration by bivalve.

  243. 人工海浜造成後の魚類，鳥類，水辺植生の遷移に関する研究 Peer-reviewed

    木村賢史, 西村修, 太田祐司, 三嶋義人, 柴田則夫, 稲森悠平, 須藤隆一

    土木学会論文集　VII-25　(720)　15-25　2002

    Publisher: Japan Society of Civil Engineers

    DOI： 10.2208/jscej.2002.720_15 　

    ISSN： 0289-7806

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    Although the number of fish species around the artificial beach has recovered, the number of fish is fluctuating greatly, and it is inferred that the number in East beach is restricted due to decreasing salinity. The number of species of wild birds in East beach has recovered to that before construction. The reason is considered to be because the offlimits area and relatively wide tidal flat are suitable living environments for wild birds, and it is inferred that the number of wild birds is related to the number and biomass of macrobenthos. The shore florae in East beach are situated at the reed marshland and are in the early stages of succession. The species diversity of shore florae is tending to increase.

  244. The Effect of Manganese Released from Lake Sediment on the Growth of Cyanobacterium Microcystis aeruginosa Peer-reviewed

    TADA C, SUGIURA N, MATSUMURA M, ITAYAMA T, NISHIMURA O, INAMORI Y

    Jpn. Jour. Water Treat. Biol.　38　(2)　95-102　2002

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.38.95 　

    ISSN： 0910-6758

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    In order to clarify the effect of the manganese released from lake sediment on the growth of M. aeruginosa, the cyanobacterium was cultured with leachate obtained by column leaching experiments which used lake sediment in Lake Kasumigaura Japan. The growth of M. aeruginosa in the leachate of sediment at St.1 and St.9 reached the density higher than 1.2×106 cells⋅ml-1, and was larger than those at the other points. The corresponding manganese concentrations of these leachates were also more than 10 times higher than the other points. That is why, it was considered that manganese might promote the growth of M. aeruginosa. Furthermore, in order to clarify the relation between manganese and the growth of M. aeruginosa, it was cultured with the addition of manganese into leachates of sediment and artificial medium. From the results, the addition of manganese or EDTA in all leachates of sediment except those for St.l and St.9, also accelerated the growth of M. aeruginosa. Moreover, it was obvious that manganese only promoted the growth of M. aeruginosa in the presence of EDTA, according to the results of experiments with artificial medium. A comparison of the results of experiments with leachate of sediment and artificial medium indicated that manganese complexing-agents like EDTA were included in the leachate of sediment. The relation between manganese and complexing-agents released from sediment is thus important for controlling the growth of M. aeruginosa in eutrophic lake.

  245. The Influence of Materials Released from Lake Sediment on the Growth of Three Kinds of Algae Peer-reviewed

    CHIKA TADA, OSAMU NISHIMURA, TOMOAKI ITAYAMA, YUHEI INAMORI, MASATOSHI MATSUMURA AND, RYUICHI SUDO

    Jpn. Jour. Water Treat. Biol.　37　(4)　161-172　2001

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.37.161 　

    ISSN： 0910-6758

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    To investigate the influence of materials released from lake sediment on the flora of phytop1ankton, we cultured three algal species, the green algae Scenedesmus acutus, the cyanobacterium Microcystis aeruginosa and filamentous cyanobacterium Oscillatoria agardhii with water obtained from an elution experiment of lake sediment. The effect of materials released from sediment on the growth of algae clearly varied from species to species of algae. The growth of green algae S. acutus was influenced by nitrogen released from sediment, though nitrogen was not actually supplied from the sediment somuch. The growth of filamentous cyanobacterium O. agardhii was mainly influenced by phosphorus released from the sediment. On the other hand, the growth of cyanobacterium M. aeruginosa was influenced by some materials, which were not nitrogen and phosphorus. From the results of an incubation experiment with adding EDTA and past research reports, it was suggested that these materials were organic complexes of iron, which stability constants was high, and inhibited M. aeurignosa from getting iron. This is a new finding in the relation between algae and lake sediment, and indicates that organic matter as complex-ligand released from sediment is one of the important factors affecting the flora of phytoplankton.

  246. 人工リーフ周辺の流れと生息する海藻との関係 Peer-reviewed

    井上公人, 田中仁, 西村修, 馬場聡

    環境工学研究論文集　38　21-29　2001

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.38.21 　

    ISSN： 1341-5115

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    In recent years, a social demand toward an ecological aspect of a coastal area is increasing. However, very little things have been known about the relationshipbetween an ecosystem and a coastal environment. The objective of the present study is to investigate the transition of algae community on artificial reefs afterconstruction, and the relationship between the development of algae on artificial reefs and the intensity of wave-induced current around artificial reefs will be discussed.

  247. 人工リーフ周辺の流れと海藻群集の関係 Peer-reviewed

    井上公人, 田中仁, 西村修, 馬場聡

    水工学論文集　46　977-982　2001

    DOI： 10.2208/prohe.46.977 　

  248. Complete treatment of swine waste by developing thermophilic oxic process

    CW Lee, N Chiba, O Nishimura, K Yamada, R Sudo

    WATER SCIENCE AND TECHNOLOGY　42　(3-4)　363-368　2000

    ISSN： 0273-1223

  249. 富栄養化湖沼の底泥溶出水の藻類の増殖に及ぼす影響

    多田千佳, 西村修, 稲森悠平, 松村正利, 須藤隆一

    第７回生物利用新技術研究シンポジウム及び「環境ホルモンセッション」論文集　33-37　2000

  250. The use of Testacealobosia Arcella vulgaris isolated from activated sludge to indicate the performance of nitrificartion process

    X.N.Lee, J.H.Kim, O.Nishimura, K.Q.Xu, R.Sudo

    Proceedings of 1st World Congress of the International Water Assosiation on CD-ROM, Paris, France　2000

  251. Protozoan Populations in a sequencing batch reactor used for swine wastewater treatment : a case study in pilot plant experiment

    J.H.Kim, O. Nishimura, K.Q.Xu, K.Yamada, R. Sudo

    Proceedings of 2nd International Symposium on Sequencing Batch ReactorTechnology, Narbonne　30-37　2000

  252. 限外ろ過膜を組み込んだ間欠曝気回分活性汚泥法における処理の高度化 Peer-reviewed

    庄司成敬, 井上充, 西村修, 稲森悠平

    日本水処理生物学会誌　36　(1)　15-24　2000

    DOI： 10.2521/jswtb.36.15 　

  253. 人工リ-フに生息する海藻の遷移 Peer-reviewed

    井上公人, 田中仁, 西村修, 馬場聡

    環境工学研究論文集　37　379-388　2000

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.37.379 　

    ISSN： 1341-5115

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    Several studies have been made on the effect of the artificial reef construction on the algae and seaweed. But little is known about the transition of the algae on the surface of newly constructed reef This paper is intended as an investigation of the transition of the algae and seaweed on the artificial reef in the Hirota bay.<BR>The results of this investigation showed that the transition of the ecosystem on the artificial reef could be showed by the index of diversity, and that the algae and seaweed on the artificial reef would be influenced by the wave and current around the artificial reef.

  254. 葛西人工海浜における生物生息環境の不安定化に係わる環境因子の検討 Peer-reviewed

    木村賢史, 鈴木伸治, 西村修, 稲森悠平, 須藤隆一

    土木学会論文集　664　(VII-17)　55-63　2000

    DOI： 10.2208/jscej.2000.664_55 　

  255. Role of microorganisms in Biofilm on Degradation of Musty Odor Producing Phormidium tenue Peer-reviewed

    N.Sugiura, O.Nishimura, Y.Inamori, N.Iwami, R.Sudo

    J. Water Treatment Biology　36　(1)　33-40　2000

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.36.33 　

    ISSN： 0910-6758

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    In this study, potential of biodegradation of musty odor producing Phormidium tenue by biofilm was examined. The biofilm was scraped from a honeycomb-like tube settled in the biological treatment facility of Kasumigaura Waterworks and P. tenue which produces 2-methylisoborneol (MIB) was isolated from Lake Kasumigaura. P. tenue of 80 mgl-1 and 103μgl-1 of the mllsty odor compound, MIB were degraded by the biofilm within 8 days. It was found that several protozoa such as Monas guttula, Holostica sp., Tetrahymena sp., and Stylonychia sp. in the biofilm actively predated on the P. tenue, subsequently the eluted MIB from the strains was perfectly assimilated by bacteria in the biofilm.

  256. 有殻葉状仮足虫類Arcella vulgarisの硝化指標性およびその機構 Peer-reviewed

    李先寧, 小浜暁子, 金主鉉, 千葉信男, 西村修, 須藤隆一

    環境工学研究論文集　37　41-50　2000

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.37.41 　

    ISSN： 1341-5115

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    In order to evaluate Testacealobosia Arcella vulgaris as an indicator in nitrification process, the feeding habits on nitrifying bacteria and the effect of nitrogen compounds on the growth characteristics were examined comparing with those of Vorticella microstoma and Opercularia sp. In batch culture experiments, it was clear that A. vulgaris could grow well with Nitrosomonas europaea and Nitrobacter winogradskyi as food bacteria, whereas the growth of V. microstoma and Opercularia sp. was not observed. In addition, the inhibition effects of NH4-N and NO2-N on the growth of A. vulgaris were observed significantly. In continuous culture experiments, the strong relation between the concentration of A. vulgaris and nitrification ratio were found due to the close prey-predator relation with nitrifying bacteria and its high sensitivity to NH4-N concentration. It is suggested that A. vulgaris is a good indicator for nitrifying process.

  257. 肉食性原生動物Dileptus anserによる有機物分解機能強化の機構に関する基礎的研究 Peer-reviewed

    小浜暁子, 李先寧, 金主鉉, 西村修, 稲森悠平, 須藤隆一

    環境工学研究論文集　37　51-60　2000

    DOI： 10.11532/proes1992.37.51 　

  258. 有殻葉状仮足類Arcella vulgarisの硝化細菌捕食特性および硝化機能に及ぼす影響 Peer-reviewed

    李先寧, 小浜暁子, 金主鉉, 千葉信男, 西村修, 須藤隆一

    水環境学会誌　23　(11)　661-667　2000

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.23.661 　

    ISSN： 0916-8958

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    The enhanced mineralization of organic nitrogen by bacteriophagous protozoa has often been reported, hoever, the effects of the protozoa on nitrification are not well known. In this study, the effects of Testacealobosia Arcella vulgaris on nitrification were investigated by batch culture experiments. A. vulgaris could grow well with two kinds of nitrifying bacteria, Nitrosomonas europaea and Nitrobacter winogradskyi. These results indicate that the predation of nitrifying bacteria by A. vulgaris may affect the biomass of nitrifying bacteria and nitrification activity in the food chain. Experiments in semi-continuous culture of A. vulgaris and nitrifying bacteria indicated that nitrification efficiency and activity of nitrifying bacteria were increased in the presence of A. vulgaris. The same tendency was found in the mixed culture system of A. vulgaris and activated sludge whose protozoa and micrometazoa were killed by heating with water bath for 5min. at 45°C. Nitrification efficiency was improved by adding a large number of A. vulgaris because of the increase of the activity of nitrifying bacteria, though the number of nitrifying bacteria decreased.

  259. Complete treatment of swine waste by developing thermophilic oxic process Peer-reviewed

    C. W. Lee, N. Chiba, O. Nishimura, K. Yamada, R. Sudo

    Water Science and Technology　42　(3-4)　363-368　2000

    DOI： 10.2166/wst.2000.0404 　

    ISSN： 0273-1223

  260. Influence of Nitrate on the Biotic Community in Aquatic Microcosm System Peer-reviewed

    Chika Tada, Osamu Nishimura, Yuhei Inamori, Ryuichi Sudo

    8th International Conference on the Conservation and Management of Lakes, Abstracts　1　1999/05

  261. 間欠曝気を用いた小型合併処理浄化槽の窒素除去特性 Peer-reviewed

    李先寧, 山田一裕, 金主鉉, 西村修, 須藤隆一

    浄化槽研究　11　(1)　23-33　1999

    Publisher:

    ISSN： 0919-6501

  262. 韓国における畜産ふん尿の処理現況と処理技術 Peer-reviewed

    金主鉉, 西村修, 竹下俊二, 柳在根, 須藤隆一

    用水と廃水　41　(2)　37-47　1999

  263. 生物処理における有用微小動物の収率 Peer-reviewed

    林紀男, 藤本尚志, 西村修, 稲森悠平

    浄化槽研究　11　(2)　27-66　1999

  264. ヒメダカに対する界面活性剤とアンモニアの複合影響 Peer-reviewed

    藤原茂樹, 山田一裕, 西村修, 須藤隆一

    用水と廃水　41　(7)　28-32　1999

  265. The properties of N2O production in swine wastewater treatment system

    K.Gonoi, O.Nishimura, M.Mizuochi, Y.Inamori, R.Sudo

    ASIAN WATERQUAL｀99 Conference Preprint　753-758　1999

  266. Piggery wastewater treatment by a pilot scale sequencing batch reactor

    J.H.Kim, T.Sakamura, O.Nishimura

    ASIAN WATERQUAL｀99 Conference Preprint　1547-1550　1999

  267. Behavior of nitrogen of tidal flat in a tide time scale

    T.Sakamaki, J.Kim, N.Chiba, O.Nishimura

    Proceedings of MEDCOAST99-EMECS99 Joint Conference, Antalya　261-268　1999

  268. Influence of bibalve on nutrients cycle in coastal area

    O.Nishimura, T.Sakamaki, K.Kimura, Y.Inamori, R.Sudo

    Proceedings of MEDCOAST99-EMECS99 Joint Conference, Antalya　283-292　1999

  269. Restoration of coastal ecosystem-the KASAI artificial tidal flats

    K. Kimura, S. Suzuki, Y. Inamori, O. Nishimura, R. Sudo

    Proceedings of MEDCOAST99-EMECS99 Joint Conference, Antalya　683-694　1999

  270. 水平透明度による水質のきれいさの評価 Peer-reviewed

    佐々木久雄, 西村修, 須藤隆一

    水環境学会誌　22　(7)　581-586　1999

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.22.581 　

    ISSN： 0916-8958

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    People usually evaluate the amenity of water environment by transparence to look at water. Water transparence is measured by transparency or transparency by cylinder test. However, these methods have some defects such as difficulties in measuring at shallow and clean waters, because transparency is limited by water depth and transparency by cylinder test is limited by length of a cylinder. Moreover, the lack of objectivity is pointed out, since transparency measuring is due to personal sensitivity. To conquer these problems, we designed a measuring method of horizontal transparency, and developed a measuring equipment by using an eye-test chart and a waterproof camera. We applied this method to water quality investigation of Matsushima Bay, Miyagi prefecture, and studied the characteristics of horizontal transparency comparing with transparency, transparency by cylinder test and so on. The results obtained were as follows; (1)Horizontal transparevcy has superior objectivity, because evaluation by plural number of people diminish personal errors. (2)Horizontal transparency is possible to express water transparence quantitatively without any limits, though conventional methods cannot apply to relatively clear and shallow waters. (3)Horizontal transparency has a very good correlation between not only transparency but also turbidity and suspended solids that are mainly affect to transparency. (4)The sense of visitors and fishermen about the water quality of Matsuhima Bay can be represented by horizontal transparency.

  271. 回分式活性汚泥・生物膜法による低水温下のBOD,窒素およびリンの処理特性 Peer-reviewed

    井上充, 金主鉉, 西村修, 稲森悠平, 須藤隆一

    水環境学会誌　22　(10)　839-844　1999

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.22.839 　

    ISSN： 0916-8958

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    In order to improve nitrogen and phosphorus removal efficiencies at low water temperature, intermittent aeration batch activated sludge process combined with biofilm process (media-added batch activated sludge process) was applied and its treatment performance was investigated for a different packing rate of string contact media with range of 0-21%. With the increase of packing rate of contact media, successful nitrification occurred. However, the dentrification efficiency decreased at the packing rate of 21%. This is because the relatively high DO concentration at the packing rate of 21% was not suitable for the denitrification condition. The optimal packing rate of media was 13% for simultaneous removal of BOD and nitrogen at 10°C.Removal efficiencies of BOD, DTN (disoluble total nitrogen) and DTP (disoluble total phosphorus) were 90%, 31% and 20%, respectively under operating condition of 3cycle a day at 10°C. Moreover, removal efficiencies of BOD, DTN and DTP increased to 94%, 64% and 22%, respectively by combining with biofilm process. Nitrogen removal efficiency was significantly enhanced.In spite of introduction of biofilter process, removal efficiency of phosphorus was not improved. It was observed that anaerobic phosphorous release and aerobic phosphorous uptake was significantly affected by low water temperature.As a biological removal of phosphorus cannot be expected at low water temperature, it is necessary to consider the combination with a physical treatment method.

  272. 鉄濃厚溶液滴下回分式活性汚泥・生物膜法における低水温時のリン除去効果の改善 Peer-reviewed

    井上充, 金主鉉, 西村修, 稲森悠平, 須藤隆一

    水環境学会誌　22　(11)　882-887　1999

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.22.882 　

    ISSN： 0916-8958

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    In order to improve efficiencies of phoshorus removal at low water temperature, media-added batch activated sludge process combined with droplet method of thick iron solution as a chemical dosing was investigated in a process treating a sewage wastewater.An thick iron solution is able to be made by heating the crystal of the iron (III) chlorid hexahydrate within one hour at 50-60°C. However, it was shown that the dilution of thick iron solution was necessary to prevent solidification of the solution due to lowering of temperature. The optimal dilution ratio (the ratio of water volume to the volume of thick iron solution) was 0.4 v/v and it was observed the diluted solution did not solidify at 2°C.Removal efficiency of phosphorus by using the dosage of diluted thick iron solution was remarkably enhanced up to 79-82% at 10°C and it was not observed the inhibitive effect of the dosage on the nitrification and the BOD removal. These results indicate that biological process combined with the droplet method of thick iron solution improve treatment efficiency of phosphorus significantly at low water temperature.This method could decrease the frequency of maintenance because smaller quantity of dosage is required comparing with the conventional chemical method.

  273. 凝集剤添加・回分式間欠曝気活性汚泥法による畜舎排水の高度処理と亜酸化窒素の放出特性 Peer-reviewed

    金主鉉, 片山悦治郎, 藤田泰広, 山田一裕, 西村修, 稲森悠平, 須藤隆一

    環境工学研究論文集　36　455-464　1999

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.36.455 　

    ISSN： 1341-5115

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    A sequencing batch reactor process by adding aluminium sulfate was operated with a different BOD/T-N ratio and Al/P molar ratio to investigate the removal characteristics of nitrogen and phosphorus, and nitrous oxide (N2O) emission from the swine wastewater treatment. The following results can be drawn:<BR>(1) The percentage removal of T-N and T-P were 63.6-78.0% and 83.9-97.3% respectively, and their treatment performance were significantly affected by BOD/T-N ratio of influent and the amount of chemical dosage. Nitrification inhibition by the dosage of coagulant in the addition of 0.2 and 0.5 as Al/P molar ratio was not observed during operational periods.(2) N20 conversion rate decreased with increasing of percentaged enitrification. In particular, N2O emission of low BOD/T-N ratio was more significant than that of high BOD/T-N ratio during the anaerobic process.

  274. 豚舎排水を処理する活性汚泥法の管理指標-有機物酸化活性、硝化活性の評価- Peer-reviewed

    全恵玉, 西村修, 金主鉉, 山田一裕, 千葉信男, 須藤隆一

    日本水処理生物学会誌　35　(2)　131-141　1999

    Publisher:

    DOI： 10.2521/jswtb.35.131 　

    ISSN： 0910-6758

  275. 畜舎排水処理の活性汚泥に出現する微小動物 Peer-reviewed

    金主鉉, 西村修, 全恵玉, 大内山高広, 千葉信男, 須藤隆一

    日本水処理生物学会　35　(4)　235-245　1999

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.35.235 　

    ISSN： 0910-6758

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    In order to investigate microfauna in activated sludge treating livestock wastewater for control of treatment performance and effluent quality, mixed liquor of intermittent aeration process (pilot scale) and extended aeration process (full scale) were examined microscopically during a year.<BR>The numbers of microanimal species found in activated sludge of intermittent aeration and extended aeration were 16 sp. and 13 sp., respectively. Observed microanimal species was very few in comparison with microfauna of other biological wastewater treatment system. Microfauna in a livestock wastewater treatment system show characteristic and variations in species composition and density with response to SS removal, BOD removal and pH variation. Opercularia coarctata was considered useful indicator of BOD and T-N removal, however flagellated protozoa was only observed in mixed liquor when the percentage BOD removal was below 95% and NH4-N was accumulated in the reactor. There was a drastic change in microfauna which became dominant by Rhizopoda such as Euglypha sp., Cryptodifflugia oviformis and Trinema lineare with the accumulation of effluent NO3-N.<BR>These results show microfauna in activated sludge treating livestock wastewater was valuable as indicators of system perfomance. In addition, it is clear that the indicator organisms observed in activated sludge treating sewage wastewater is possible to be applied to livestock wastewater treatment, in a similar way to their use for the mainanace of treatment system.

  276. 回分式間欠曝気活性汚泥法による豚舎排水の有機物・窒素除去に関するパイロットプラント実験 Peer-reviewed

    金主鉉, 酒村哲郎, 千葉信男, 西村修, 須藤隆一

    水環境学会誌　22　(12)　990-996　1999

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.22.990 　

    ISSN： 0916-8958

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    A pilot scale experiment of intermittently aerated sequencing batch reactor process (SBR) was carried out during 5 months to investigate the removal characteristics of BOD and nitrogen from a piggery wastewater. The pilot plant was set to operate in automatic control. The SBR pilot plant was operated on a 24h cycle, as mix of 5h, aeration of 15h, sedimentation of 3.5h and withdraw of 0.5h. The concentration of MLSS was highly controlled as 6,000-7,000mg·l-1. The operation of the SBR pilot plant was conducted with low BOD volumetric loading (mean value is 0.26 BODkg·m-3·d-1), and very long sludge age (57d).The percentage removals of BOD and CODMn during the experimental period were 99.5% (< 37mg·l-1) and 89.9% (< 170mg·l-1), respectively. The mean NH4-N concentration of effluent was 10mg·l-1 and any ammonia accumulation was not observed during the operational period except for the conditions that pH value of treated water was less than 5.5. This nitrate accumulation was because the carbon sources for denitrification was deficient. The maximal NO3-N concentration of effluent increased up to 250mg·l-1 at BOD/T-N 1.0. The percentage removal of T-N decreased remarkably when BOD/T-N ratio was less than 3.0. This result indicates that to maintain BOD/T-N ratio of piggery wastewater suitably is important for the treatment performance of nitrogen. Filamentous microorganisms were always observed in activated sludge, however settling control problems by filaments were not seen during the experimental period. The influence of BOD-MLSS loading on the settling process was more significant rather than the occurrence of filamentous microorganisms in activated sludge.

  277. 肉食性原生動物Dileptus anserの増殖特性 Peer-reviewed

    小浜暁子, 金主鉉, 山田一裕, 西村修, 稲森悠平, 須藤隆一

    環境工学研究論文集　36　263-270　1999

    DOI： 10.11532/proes1992.36.263 　

  278. 浚渫ヘドロ上に創出した人工ヨシ湿地の水質浄化機能の評価 Peer-reviewed

    徐開欽, 加藤智博, 稲森悠平, 西村修, 細見正明, 須藤隆一

    用水と廃水　41　(6)　26-34　1999

  279. 活性汚泥から分離した有殻葉状仮足類Arcella vurgarisの増殖に及ぼす環境因子の影響 Peer-reviewed

    李先寧, 金主鉉, 西村修, 山田一裕, 千葉信男, 丁国際, 須藤隆一

    水環境学会誌　22　(7)　568-573　1999

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.22.568 　

    ISSN： 0916-8958

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    Testacealobosia, Arcella vulgaris is well known as the typical protozoa found in the activated sludge and biofilm when nitrification is in progress. The effects of good source, water temperature, pH and phosphate buffer concentration on specific growth rate of A. vulgaris isolated from activated sludge were examined. A. vulgaris was successfully cultured when Chlorella powder suspension media and sludge bacteria were used as food sources. The growth parameters wwere determined using Chlorella powder suspension media. The specific maximum growth rate and half-saturation constant were 1.05d-1 and 1.4TOCmg·l-1, respectively. The growth of A. vulgaris was observed from 10°C to 36°C with optimal growth at 32°C. A. vulgaris was able to grow when the concentration of phosphate buffer was higher than 2/75M and pH value ranged from 4.2 to 9.0. The results show that food concentration and water temperature are the important parameters for the growth of A. vulgaris.

  280. Significance of attached cyanobacteria relevant to the occurrence of musty odor in Lake Kasumigaura Peer-reviewed

    Norio Sugiura, Norio Iwami, Yuhei Inamori, Osamu Nishimura, Ryuichi Sudo

    Water Research　32　(12)　3549-3554　1998/12

    DOI： 10.1016/S0043-1354(98)00153-5 　

    ISSN： 0043-1354

  281. Treatment characteristics of swine waste in thermophilic oxic process Peer-reviewed

    Chan-Woo LEE, Chika TADA, Osamu NISHIMURA, Kazuhiro YAMADA, Ryuichi SUDO

    Journal of Japan Society on Water Environment　21　(12)　862-868　1998/12

    DOI： 10.2965/jswe.21.862 　

    ISSN： 0916-8958

  282. 間欠曝気式回分活性汚泥法による水路汚濁水中のBOD、窒素およびリンの除去効果 Peer-reviewed

    井上充, 稲森悠平, 西村修

    水環境学会誌　21　(4)　230-236　1998/04

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.21.230 　

    ISSN： 0916-8958

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    Grey water from 70 household and some factories in a region without sewer was treated by sequencing batch reactor activated sludge process. Intermittent aeration manner was applied in this study, and several screens were installed in the reactors to remove the massive solid like leaf from the wastewater with the flow rate 26 m3. BOD concentration of influent was more than about 20 mg·l-1.Under operation condition of 4 cycles in a day, removal efficiencies of BOD, T-N and T-P were about 92%, 78% and 87%, respectively. Moreover, effluent NH4-N concentration was maintained about 0.5 mg·l-1 by controlling the amount of aeration.When the water tempareture was 11°C in winter, number of cycle in a day was reduced twice and aeration time increated for good effluent water quality. The results showed that good removal efficiencies were achieved under these conditions.

  283. Numerical Analysis for the Effect of Artificial Tidal Flat on Water Purification Capacity Peer-reviewed

    O.Nishimura, K.Kimura, Y.Yamada, Y.Inamori, R.Sudo

    Jour.Japanese.Assoc.Coastal Zone Studies　10　137-149　1998/03

  284. 礫間接触酸化法における微細藻類の除去特性 Peer-reviewed

    坂巻隆史, 西村修, 徐開欽, 千葉信男, 須藤隆一

    水環境学会誌　21　(11)　772-779　1998

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.21.772 　

    ISSN： 0916-8958

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    The purpose of this study is to investigate the deposit and decomposition characteristics of microalgae using the gravel bed contact-purification method. The following results were obtained : The deposit ratio of Tetraselmis tetrathele is higher than that of Nitzchia closterium due to the shape and size of their cells. The deposit characteristic is expressed by the Iwasaki's filtration equation, and the filter coefficient is a function of real velocity and specific surface area of gravel bed. The decomposition rate constant of deposited microalgae is ranged from 0.10 to 0.14 hr-1 winch is 20-30 times as high as that under suspended condition. The decomposition rate has a proportional relation to the specific surface area in case enough amount of microalgae deposit in gravel bed. Under a few assumptions, both the deposit and decomposition rates are defined by gravel diameter. Therefore, it is possible to design the optimum gravel diameter for the effective and sustainable removal of microalgae using this system.

  285. 浄水処理における細菌の塩素消毒に及ぼす線虫類の影響 Peer-reviewed

    丁国際, 徐開欽, 西村修, 稲森悠平, 須藤隆一

    日本水処理生物学会誌　34　(4)　253-266　1998

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.34.4_253 　

    ISSN： 0910-6758

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    An ultrasonication method was developed to study the effect of nematodes on the chlorination of bacteria and to investigate numbers of bacteria associated with nematodes isolated from a distribution system. The organisms selected for this study were Nematoda Rhabditis sp. and Bacteria Escherichia coli C600. Thé results of experiment showed that ultrasonication of nematodes was effective for determining the numbers of bacteria in the body of the nematode and the most suitable condition of ultrasonication was 40 w for 60 sec. It was clear that resistance of associated bacteria to free chlorine was 1, 000 times higher than that of unassociated bacteria and there was a positive correlation between the survive ratio of associated bacteria and nematodes, which suggested that surviving nematodes can serve as carriers to protect bacteria lived in their body from chlorination and decreasing the survive ratio of nematodes will be effective for decreasing that of bacteria. The results of investigation on numbers of bacteria associated with nematodes isolated from an actual distribution system showed that a lot of viable bacteria were detected from surviving nematodes treated by ultrasonication, which confirmed the above experiment results and suggested that viable bacteria associated with nematodes might leak into the distribution system.

  286. カルシウム系焼結セラミックス担体の栄養塩類吸着特性と硝化促進効果 Peer-reviewed

    西村浩, 竹川愛, 稲森悠平, 須藤隆一, 西村修, 小野木三津子

    水環境学会誌　21　(11)　727-732　1998

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.21.727 　

    ISSN： 0916-8958

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    Effect of ceramics carrier contained calcium on nutrient adsorption and microorganism-affinity in the microbial purification were examined. The carrier confined clay 40% with oyster shell 60%, which was modified with main component of Ca(OH)2 having 100-fold solublity relative to natural oyster, could remove above 95% of PO4-P compared with the oyster shell contained 98% of CaCO3. At the same time the growth rates (μ) of nitrite bacteria and nitrifing bacteria were examined. It was found that the alkalinity of the treated water (90mg·l-1) using ceramics carrier with calcium was 4 times higher than that of the control, followed by the favorable growth (μ=1.31d-1), having effective adsorption of PO4-P and acceleration of nitrification due to the release of OH- from the carrier. Moreover ammonium-nitrogen of about 70% was found to be removed by the replacement reaction of Ca2+ for NH4+ with PO4-P in the hydroxyapatite, even with the use of the lowered carrier with adsorption of PO4-P. Nutrients of NH4-N (107mg·carrier-g-1) and PO4-P (20.4mg·carrier-g-1) were collected as an fertilizer. It was also possible to recover the adsorptive activity.

  287. Treatment characteristics of swine waste by thermophilic oxic process in long-term operation Peer-reviewed

    李王贊雨, 多田千佳, 西村修, 山田一裕, 須藤隆一

    Environmental Engineering Research　35　21-27　1998

    DOI： 10.11532/proes1992.35.21 　

    ISSN： 1341-5115

  288. 生態工学を活用した低汚濁海水の浄化

    稲森悠平, 西村修, 木村賢史, 徐開欽

    化学工業　49　(6)　41-49　1998

  289. Influence of Nitrate on the Biotic Community in Aquatic Microcosm SystemProceedings of ILEC Conference, Denmark

    C.Tada, O.Nishimura, Y.Inamori, R.Sudo

    Proceedings of ILEC Conference, Denmark　SIA10-SIA13　1998

  290. 水路・河川生物膜酸化における接触材の形状特性と浄化能との関係に関する解析

    西村浩, 稲森悠平, 徐開欽, 西村修, 須藤隆一

    第6回生物利用新技術研究シンポジウム論文集　204-208　1998

  291. Filtration,Respiration and Assimilation in the Suspansion Feeding Bivalves,Limnoperna fortunei kikuchii and Mactra veneriformis Peer-reviewed

    K. Kimura, O. Nishimura, T. Tsuchiya, S. Okutomi, K. Yamashita, Y. Inamori, R. Sudo

    Japanese Journal of Water Treatment Biology　34　(3)　183-194　1998

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.34.3_183 　

    ISSN： 0910-6758

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    The filtration, respiration and assimilation rates in the suspension feeding bivalves, Limnoperna fortunei kikuchii and Mactra veneriformis were examined.<BR>The results can be summarized as follows: 1) Filtration and respiration rates per unit wet tissue weight of both L. f. kikuchii and M. veneriformis increased in accordance with increase in water temperature and decrease in the shell-length. These values increased in growth phase. 2) Differences in the circumstances of bivalves habitat, such as intertidal and undertidal zones affected the daily changes of the filtration and feces excretion rates. 3) The filtration and respiration rates of both bivalves were expressed by the following Equations:<BR>•Limnoperna fortunei kikuchii<BR>F (ml⋅g-1⋅hr-1) =7.8×10-3×t2.33×W-1.19 (r2=0.97, n=16, wet tissue weight 0.144-0.356 g and 10-28°C in water temperature) .<BR>R (mg-O2⋅g-1⋅hr-1) =7.8×10-6×t3.01×W-0.29 (r2=0.98, n=17, wet tissue weight 0.151-0.478 g and 10-28°C in water temperature)<BR>•Mactra veneriformis<BR>F (ml⋅g-1⋅hr-1) =4.9×t0.77×W-0.90 (r2=0.94, n=16, wet tissue weight 0.237-3.488 g and 10-28°C in water temperature) .<BR>R (mg-O2⋅g-1⋅hr-1) =5.0×10-4×t1.63×W-1.29 (r2=0.99 and n=16, wet tissue weight 0.237-3.488 g and 10-28°C in water temperature)<BR>4) Assimilation rate of both bivalves decreased with the increase of shell-length and the decrease of water temperature. M. veneriformis generaly had a higher assimilation rate than L. f. kikuchii.

  292. 鞭毛虫類Monas guttulaによるカビ臭産生藻類Phormidium tenueの分解に及ぼす温度の影響 Peer-reviewed

    李保瑛, 杉浦則夫, 稲森悠平, 西村修, 東照雄, 須藤隆一

    水環境学会誌　21　(4)　224-229　1998

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.21.224 　

    ISSN： 0916-8958

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    Biodegradation characteristics of cyanobacteria, Phormidium tenue and its metabolites, 2-methylisoborneol(MIB) by protozoan microflagellate, Monas guttula, and the effect of temperature on them were examined in batch culture experiment. The flagellate was found to predate on P.tenue favorably as a food source within a wide temperature range from 10°C to 30°C. Specific growth rate(μ) and generation time(td) of the flagellate were 4.6day-1 and 3.5h-1, respectively at 20°C and 30°C, whereas in the case of 10°C the lag values of μ and td were obtained by 1.9 fold in comparison with the removal ratio of 61% at the first cultivation day and that of 99% at the 2nd day at 30°C, while at 20°C the removal was only about 30% in the first day, but P.tenue could be perfectly reduced at the 2nd day. Although the reduction rate of the P.tenue was slow at the lower temperature of 10°C, the removal reached 98% in the 7th day. Removal rate of P.tenue by the flagellate increased with the increase in temperature and reached maximal value with 4.0h-1 at 30°C. The flagellate could contribute to the degradation of MIB, although the degradation was lower than that of P.tenue. It was found that the microflagellate could favorably predate on P.tenue and degrade its metabolite, MIB emitting musty odor in a wide range of temperature.

  293. Relation between water quality and microbial composition of the biofilm attached on the bed of the stream purification facilities Peer-reviewed

    A.Kohama, S.Hayashi, N.Chiba, K.Yamada, O.Nishimura, R.Sudo

    Environmental Engineering Research　35　403-413　1998

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.35.403 　

    ISSN： 1341-5115

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    The objective of this study was to investigate the relation between water quality and the species composition of microorganism in the stream purification facilities. The results showed that the concentration of dissolved organic matters like dissolved organic nitrogen (DON), dissolved protein decreased as the wastewater flowed down. In August, the concentration of the DON was very little (0.19-0.43 mg.l-1), among the three points the seed biofilm was fetched out, population of the bacteria raised in the media with inorganic nitrogen source was higher that with the organic ones. However, in February, media with organic nitrogen source led to higher bacteria population than those with inorganic nitrogen source inthe case that the seed biofilm was stripped out from the upstream point. On theother hand, the biofilm sampled from the middle-and down-stream area, the media with inorganic source resulted in higher bacterial population than the ones of organic source. In the upstream point where the organic concentration was higher, zoomastigophara was dominant protozoa. In February, the ciliate Colpidium sp. was the dominant species with the its population occupied 88-95% of the total protozoan population. It suggest that the occurrence of different dominant species should be the different characteristics of the bacteria assimilating the nitrogen. It was clarified that the microbial composition of the biofilm was affected bythe nitorogen composition and its concentration

  294. Sessile Animals Distribution and their Water Quality Purification Function in Tokyo Inner Bay Peer-reviewed

    K.Kimura, T.Tsuchiya, Y.Inamort, S.Okutomi, O.Nishimura, R.Sudo

    Journal of Japan Society on Water Environment　21　(1)　35-40　1998/01

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.21.35 　

    ISSN： 0916-8958

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    Sessile animals' distribution and their water quality purification function in Tokyo inner bay were investigated. The following results were obtained.1) In the coastal artificial structure which extends up to 192 km in the Tokyo inner bay, the number of species of sessile animals lies in the range of 43-46 throughout the year. A number of individuals show repetitive phenomena of increasing by the production of larva during spring and autumn which are their breeding period and decreasing during summer and winter when environmental conditions become worse.2) The predominant four species mainly Mytilus edulis galloprovincialis and the rest Limnoperna fortunei kikuchii, Crassostrea gigas, Balanus spp., account for more than 90% of the biomass of sessile animals. It is presumed that an average of 9, 110t of sesile animals inhabited annually.3) The sessile animals of Tokyo inner bay are presumed to possess the COD purification ability of 19t per day on the average in year and thus contribute immensely for purification of water environment of Tokyo inner bay.4) The COD, N and P amounts which have been stored within the sessile animals' tissue are 2,292,127 and 16t per year respectively. These amounts recur to the water environment with sessile animals' longevity.

  295. Grazing characteristics of musty-odor-compound-producing Phormidium tenue by a microflagellate, Monas guttula Peer-reviewed

    Norio Sugiura, Osamu Nishimura, Yuhei Inamori, Takahiro Ouchiyama, Ryuichi Ryuichi Sudo

    Water Research　31　(11)　2792-2796　1997/11

    DOI： 10.1016/S0043-1354(97)00115-2 　

    ISSN： 0043-1354

  296. Direct purification of sea water by natural biofilm formed in tidal flat, beach, coastal artificial structures

    Kenshi KIMURA, Takao TUCHIYA, Yuhei INAMORI, Osamu NISHIMURA, Ryuichi SUDO

    Journal of Water and Waste　39　(8)　82-89　1997/08

  297. Evaluation of activated carbons for removal of musty odor compounds in the presence of competitive organics Peer-reviewed

    N. Sugiura, O. Nishimura, Y. Kani, Y. Inamori, R. Sudo

    Environmental Technology (United Kingdom)　18　(4)　455-459　1997/04

    DOI： 10.1080/09593331808616560 　

    ISSN： 0959-3330

    eISSN： 1479-487X

  298. Relationship between Macrobenthic Fauna and Sea Botoom Environment in Tokyo Inner Bay Peer-reviewed

    K.Kimura, O.Nishimura, T.Kawai, Y.Inamort, A.Akiyama, R.Sudo

    Journal of Japan Society on Water Environment　20　(6)　411-418　1997

    DOI： 10.2965/jswe.20.411 　

  299. Grazing Characteristics of Musty Odor Compound Producing Phormidium tenue by microflagellate, Monas guttula Peer-reviewed

    N.Sugiura, O.Nishimura, Y.Inamori, T.Ouchiyama, R.Sudo

    Water Research　32　(12)　3549-3554　1997

  300. Restoration of polluted coastal area by an artificial beach system Peer-reviewed

    K.Q.Xu, Y.Sakaguchi, O.Nishimura, Y.Tanaka, M.Hosomi, R.Sudo

    Proceedings of Environmental Engineering Research　34　249-258　1997

    Publisher: Japan Society of Civil Engineers

    DOI： 10.11532/proes1992.34.249 　

    ISSN： 1341-5115

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    The objective of this paper was to propose a new ecotechnologic method to recover the polluted coastal environment by using an artificial beach system. An artificial beach (5 m×10 m) was constructed in the Matsushima Bay facing the Pacific Sea, about 300 km northeast from Tokyo. The area was polluted by fishery production and untreated wastewaters from rural district. The major merits of this system are simplicity of the structure, energy-free operation, capability to use tidal current cycle effectively, and ease of maintenance. The results of field investigation indicated that rapid removals of turbidity, suspended solids, phosphorus and ammonium nitrogen by the artificial beach system were achieved. The removal rate of total organic carbon was high because of the retention of the particulate matters. These performances were related to physical and biological filtration through the artificial beach system. It suggests that restoration of polluted coastal area may be expected using this artificial beach system.

  301. International Cooperative Research between Japan and Korea on Advanced Domestic Wastewater Treatment Systems

    Y.Inamori, J.K.Ryu, Y.T.Rim, O.S.Kwon, G.B.Han, Y.S.Kim, D.G.Rhew, M.Mizuochi, O.Nishimura

    Proceedings of the 6th IAWQ Asia-Pacific Regional Conference　1741-1748　1997

  302. Water Purification Function of Algal Biofilm Inhabiting on the Surface of Muds in Estuaries Peer-reviewed

    O.Nishimura, H.Sasaki, K.Xu, S.Abe, R. Sudo

    Japanese Journal of Water Treatment Biology　32　(2)　105-115　1996

    DOI： 10.2521/jswtb.32.79 　

  303. Testing an artificial beach system for removal of pollution in a coastal zone Peer-reviewed

    K. Q. Xu, Y. Sakaguchi, O. Nishimura, Y. Tanaka, R. Sudo

    Water Science and Technology　34　(7-8 -8 pt 4)　245-252　1996

    DOI： 10.1016/S0273-1223(96)00751-2 　

    ISSN： 0273-1223

  304. 閉鎖性汚濁内湾の水質浄化-汚濁海域からの直接浄化による窒素除去を中心として-

    高崎みつる, 西村修, 熊谷幸博

    水　38　(8)　63-69　1996

  305. Effect of temperature on biodegradability of surfactants in aquatic microcosm system Peer-reviewed

    Y. Takamatsu, O. Nishimura, Y. Inamori, R. Sudo, M. Matsumura

    Water Science and Technology　34　(7-8 -8 pt 4)　61-68　1996

    DOI： 10.1016/S0273-1223(96)00725-1 　

    ISSN： 0273-1223

  306. Restoration of Water Environment Using Biotechnology and Ecotechnology

    Y.Inamori, K. Xu, O. Nishimura, R. Sudo

    Proceedings of the 7th Japan-Brazil Symposium on Science and Technology　236-256　1995/08

  307. Species, Density and Survival of Nematodes in drinking Water Peer-reviewed

    G.J.Ding, K.Q.Xu, O.Nishimura, Y.Inamori, R.Sudo

    Japanese journal of water treatment biology　31　(2)　105-115　1995

    DOI： 10.2521/jswtb.31.105 　

  308. Removal Characteristics of Suspended Solids by Filtration using Particulate Plastic Media

    O.Nishimura, K.Q.Xu, J.Q.Shen, R.Sudo

    Reprint of IWSA Specialized Conference on Advanced Treatment and Integrated Water System Management into the 21th Century　190-191　1995

  309. 都市環境水の浄化手法 Peer-reviewed

    稲森悠平, 西村浩, 西村修, 藤本尚志

    Journal of Water and Waste　37　(8)　19-25　1995

  310. Present state and future prospects on water environment in Japan

    R.Sudo, K.Q.Xu, K.Yamada, O.Nishimura

    Korea and Japan Joint Symposium on the Development of Water Quality Renovation System, Seoul Renovation System, Seoul,　19-30　1995

  311. 浅い内湾底泥の巻き上げが栄養塩溶出に及ぼす影響 Peer-reviewed

    佐々木久雄, 西村修, 須藤隆一

    Journal of Japan Society on Water Environment　18　(1)　51-59　1995/01

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.18.51 　

    ISSN： 0916-8958

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    The effect of resuspension on nutrient release from sediments was studied by field observations and laboratory experiments. Field observations were carried out in two shallow estuaries, Matsushima Bay and Shiogama Port. Three laboratory experiments reflecting the conditions of continuous resuspension, intermittent resuspension and a static state were carried out using estuarine sediment cores. In the estuary, a fluid mud layer was formed just above the sediment and an organic surface layer with an ignition loss of over 20% was found at the top of the sediment in the summer, which increased the concentration of suspended solids during resuspension. The resuspension caused by a tidal current began a little before the low tide and continued until the high tide. It was found that the release rate of dissolved inorganic nitrogen under conditions of continuous resuspension was higher than that under a static state, because the release of ammonium nitrogen from pore water in the sediments occurred simultaneously with that from the sediment in the former case. The nitrification rate under conditions of intermittent resuspension was lower than that in the other two systems. On the other hand, phosphate release was not observed under an aerobic static state. It was also recognized that the concentration of phosphate decreased at the beginning of resuspension, and increased thereafter.

  312. Basic Research on Purification Characteristics of an Artificial Beach - Effect of the Sectional Shape of a Gravel Beach on DO Profile - Peer-reviewed

    O.Nishimura, Y.tanaka, Y.Sakaguchi, M.Hosomi, R. Sudo

    Journal of Japan Society on Water Environment　17　(10)　661-668　1994/10

    Publisher: Japan Society on Water Environment

    DOI： 10.2965/jswe.17.661 　

    ISSN： 0916-8958

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    The natural features of estuaries and coastal areas are often seriously damaged due to the discharge of pollutants by human activities, and most natural seashores have disappeared and been replaced by man-made concrete blocks. However, it is a well-known fact that natural seashores have a high self-purification capacity.The purpose of this study is to develop a new ecotechnologic method to restore the polluted coastal environment by using the artificial beach. The pilot plant of the artificial beach was constructed in the Shiogama Bay, facing the Pacific Ocean. The main merits of this system are a simple structure, free of energy demand, since the tide was used effectively, and purification is carried out by physical and biological filtration through the beach.The results showed that turbidity was removed effectively and DO was consumed by biological degradation of particulate organic matter and nitrification ; all of these performances depended on both the movement of water and the addition of oxygen caused by the tide ; both were determined by the structure of the beach, which included scale, slope and kind of gravel. The effects of the sectional shape of the beach on the performance are discussed with respect to the results of a numerical simulation.

  313. Effect of temperature on growth of blue-green algae in mixed culture experiment Peer-reviewed

    N.fujimoto, N.Sugiura, O.Nishimura, Y.Inamori, R.Sudo

    Japanese Journal of Water Treatment Biology　30　(1)　45-48　1994

    DOI： 10.2521/jswtb.30.45 　

  314. The Effect of the Tidal Flat Sediments on the Behavior of Nitrogen using Fish Pond Wastewater

    K.Q.Xu, M.Takasaki, O.Nishimura, R.Sudo

    Proceedings of the 4th International Conference on Wetland Systems for Water Pollution Control　210-218　1994

  315. Can an Artificial Beach Restore the Coastal Environment?

    O.Nishimura, Y.Tanaka, K.Q.Xu, R.Sudo, M.Hosomi, Y.Inamori

    Proceedings of the 4th International Conference on Wetland Systems for Water Pollution Control　644-653　1994

  316. 高度処理浄化槽の技術開発・普及のあり方

    稲森悠平, 西村修, 高井智丈, 須藤隆一

    月刊生活排水　14　(5)　1-10　1994

  317. 窒素およびリンの排出規制と対策技術

    須藤隆一, 西村修

    Chemical Engineering　39　(6)　21-26　1994

  318. 生活排水対策の意義と重要性

    須藤隆一, 西村修

    空気調和・衛生工学　68　(7)　515-521　1994

  319. 新しい生活排水処理技術

    稲森悠平, 林紀男, 高井智丈, 西村修

    空気調和・衛生工学　68　(7)　535-541　1994

  320. 土壌浸透法を用いた排水処理と窒素負荷量

    稲森悠平, 西村浩, 西村修, 藤本尚志

    環境と測定技術　21　(12)　8-18　1994

  321. Characteristics of Bacterial Adhension to Activated Carbon and their Degradative Potential for High Strength substrate by Biological Activated Carbon Peer-reviewed

    J.Kim, N.Sugiura, S.Fushimi, Y.Inamori, O.Nishimura, R.Sudo

    Japanese Journal of Water Treatment Biology　30　(1)　49-56　1994

    Publisher: Japanese Society of Water Treatment Biology

    DOI： 10.2521/jswtb.30.49 　

    ISSN： 0910-6758

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    To examine the removal chracteristics of substrate by biological activated carbon (BAC), adhesional potential of various bacteria to three species of activated carbon (AC) and porous ceramics (PC) as a carier and removal efficiency of pepton broth by BAC were studied in batch culture experiment. Physical adsorption capacity of the carriers was as follow: F-400 AC > Palm AC > Kureha AC > PC.Adsorption capacity was depended on the specific surface area. In no relevance to the species of carriers, the adhesional potential of bacteria to the carriers with and without substrate was ordered by E.coli > P.ovalis > A.calcoaceticus > M.luteus > B.subtilis.The adhesional amount of bacteria on PC was higher than any other carriers. In the effect of dissolved organic carbon removal by BAC, F-400 AC with P.ovalis, which had the widest surface area, was the most effective in the four species of carriers. It was found that two factors, the specific surface area of AC and the species of bacteria was important for the efficiency of BAC.

  322. Application of biotechnology to water environment field in Japan

    R.Sudo, K.Q.Xu, Y.Inamori, O.Nishimura

    Proc. of "BIOTECH 2000" - Symposium and Biofair,Seoul　199-208　1994

  323. 有用微生物を活用した環境修復

    稲森悠平, 西村修, 林紀男, 須藤隆一

    Journal of Water and Waste　36　(8)　5-10　1994

  324. Gravity dewatering mechanism - application to high speed sludge drying bed Peer-reviewed

    Osamu Nishimura, Koki Gotoh, Atsuhisa Sato

    Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers　497　(497 pt 2-2)　119-126　1994

    DOI： 10.2208/jscej.1994.497_119 　

    ISSN： 0289-7806

  325. Water Quality Assessment and Restored Expectation Using Water Quality Model with Issued Data

    M. Takasaki, O. Nishimura, T. G. Lee, A. Satoh, W. Miwa

    Journal of Water and Waste　34　(2)　3-9　1992/02

  326. Simultaneous removal of nitrogen and THM precursor by developed submerged biofilm process for drinking water Peer-reviewed

    M. Takasaki, R. Sudo, O. Nishimura, H. Y. Kim

    Water Science and Technology　26　(9-11)　2021-2024　1992

    DOI： 10.2166/wst.1992.0651 　

    ISSN： 0273-1223

  327. Dewatering characteristics of polymer conditioning alum sludge under low compressive pressure by a constant-rate strain compression test Peer-reviewed

    K. Gotoh, O. Nishimura, H. Satoh, A. Satoh, Y. D. Lee

    Water Supply　9　(1)　195-203　1991

    ISSN： 0735-1917

  328. Dewatering characteristics of alum sludge under low compressive pressure

    K. Gotoh, O. Nishimura, A. Satoh, H. Satoh

    Water Supply　8　(3-4)　547-556　1990

    ISSN： 0735-1917

  329. Dewatering Characteristics of Alum Sludge under Low Compressive Pressure Range by Constant-Rate Strain Compression Test Peer-reviewed

    Koki Goto, Osamu Nishimura, Atsuhisa Sato

    J. Japan Water Works Association　58　(10)　10-18　1989/10

  330. A Study on Gravity Dewatering Process of Drying Sand Bed Peer-reviewed

    K. Gotoh, A. Sato, O. Nishimura

    J. Japan Water Works Association　56　(11)　15-27　1987

  331. Improvement of Dewatering on Sand Beds and Its Efficiency

    O.Nishimura, K.Goto, A.Sato

    Proceedings of the 7th asia pacific regional water supply conference and exhibition　6　363-372　1987

Show all ︎Show first 5

Misc. 146

  1. Development of a Prediction Model for algal Bloom Occurrence in Water Sources Using Satellite Data

    三浦耀平, 今本博臣, 峠嘉哉, 浅田安廣, 下ケ橋雅樹, 秋葉道宏, 西村修, 佐野大輔

    日本水環境学会年会講演集　57th　2023

  2. A Research on Comparison of Greenhouse Gas Emission Reduction Status of Municipal Administrative Affairs Using National Open Data

    重浩一郎, 坂巻隆史, 西村修

    エネルギー・資源学会論文誌(Web)　44　(6)　2023

    ISSN： 2433-0531

  3. A Practical Report on the Design of Dialogue to Raise Awareness on Decarbonization.-A Case Study of the Future Design Based Workshop Held in Kuji City, Iwate Prefecture-

    重浩一郎, 坂巻隆史, 西村修

    環境情報科学論文集(Web)　37　2023

  4. Effect of Silicon Concentration in Water Environment on Growth of Diatom and its Fatty Acid Production

    長田祐輝, 大和田莉央, 田中伸幸, 野村宗弘, 坂巻隆史, 丸尾知佳子, 西村修

    日本水処理生物学会誌　59　(4)　2023

    ISSN： 0910-6758

  5. PREDICTING MARINE PRIMARY PRODUCTION BY MACHINE LEARNING

    丸尾知佳子, 坂巻隆史, 佐野大輔, 西村修

    土木学会論文集(Web)　79　(25)　2023

    ISSN： 2436-6021

  6. A Research on Comparison of Greenhouse Gas Emission Reduction Status of Municipal Administrative Affairs Using National Open Data

    重浩一郎, 坂巻隆史, 西村修

    エネルギー・資源学会研究発表会講演論文集(CD-ROM)　42nd　2023

    ISSN： 1881-9907

  7. 気候変動に伴う水道システムの生物障害等リスク評価とその適応性の強化に向けた研究 ダム湖の藻類異常発生予測モデルの構築における衛星データ等の活用可能性の検討

    西村修, 佐野大輔, 今本博臣, 三浦耀平

    気候変動に伴う水道システムの生物障害等リスク評価とその適応性の強化に向けた研究 令和3年度 総括・分担研究報告書(Web)　2022

  8. 気候変動に伴う水道システムの生物障害等リスク評価とその適応性の強化に向けた研究 障害生物およびその代謝産物の発生メカニズムの解明

    秋葉道宏, 清水和哉, 西村修, 藤本尚志, 浅田安廣

    気候変動に伴う水道システムの生物障害等リスク評価とその適応性の強化に向けた研究 令和3年度 総括・分担研究報告書(Web)　2022

  9. Hierarchical Bayesian modeling for predictive environmental microbiology toward a safe use of human excreta: Systematic review and meta-analysis

    Wakana Oishi, Syun suke Kadoya, Osamu Nishimura, Joan B. Rose, Daisuke Sano

    Journal of Environmental Management　284　2021/04

    DOI： 10.1016/j.jenvman.2021.112088 　

    ISSN： 0301-4797

    eISSN： 1095-8630

  10. Proposal of ”Local Carbon Cycle Rate” for Utilization in Small Municipalities Declaring Zero-Carbon City

    重浩一郎, 坂口芳輝, 坂巻隆史, 西村修

    環境情報科学論文集(Web)　35　2021

  11. The Trend of Regeneration of Eelgrass Beds Damaged by the Tsunami

    櫻井陽平, 野村宗弘, 大谷考一, 佐々木久雄, 西村修

    用水と廃水　63　(3)　2021

    ISSN： 0513-5907

  12. A TEMPERATURE HYSTERESIS EFFECT IN ON-SITE DOMESTIC WASTEWATER TREATMENT FACILITIES

    山崎宏史, MA Rong, 蛯江美孝, 稲村成昭, 西村修

    土木学会論文集 G(環境)(Web)　76　(7)　2020

    ISSN： 2185-6648

  13. 基調講演 開放型内湾における里海の実現を目指して : 三陸志津川湾を例として (水産海洋地域研究集会 第40回「相模湾の環境保全と水産振興」シンポジウム : 自然災害と相模湾漁業の持続的発展について)

    小松 輝久, 佐々 修司, 浅田 みなみ, 門谷 茂, 吉村 千洋, 藤井 学, 夏池 真史, 西村 修, 坂巻 隆史, 柳 哲雄

    水産海洋研究 = Bulletin of the Japanese Society of Fisheries Oceanography　81　(2)　125-128　2017/05

    Publisher: 水産海洋学会

    ISSN： 0916-1562

  14. アオコの発生する富栄養湖における底質有機物の起源と分解過程の評価

    藤林恵, 岡野邦宏, 荒木美穂, 菅原巧太朗, 野村宗弘, 西村修, 宮田直幸

    日本水環境学会年会講演集　51st　513　2017/03/09

  15. 実験水槽を用いた市販藻類による淡水二枚貝イシガイの飼育系確立の検討

    田中仁志, 田中大祐, 酒徳昭宏, 西尾正輝, 河地正伸, 藤林恵, 西村修

    日本水環境学会年会講演集　51st　2017

  16. Satoumi activities in a semi-open inner bay

    Teruhisa Komatsu, Shigeru Montani, Chihiro Yoshimura, Osamu Nishimura, Tetsuo Yanagi

    Nippon Suisan Gakkaishi (Japanese Edition)　83　(6)　1009　2017

    DOI： 10.2331/suisan.WA2458-2 　

    ISSN： 0021-5392

    eISSN： 1349-998X

  17. 八郎湖の水生動物相と食物網の季節変化

    藤林恵, 菅原巧太朗, 岡野邦宏, 内田典子, 風間聡, 高田芳博, 水田寿, 西村修, 宮田直幸

    日本水環境学会シンポジウム講演集　19th　219‐220　2016/09/13

  18. The Precedents of Overseas Johkasou Technology Transfer "Development of Water Quality Renovations System Project in Korea" (JICA Project)

    58　(6)　461-467　2016/06

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  19. 硝化抑制運転を行う下水処理場最終沈殿池における溶存態亜酸化窒素の生成

    大友渉平, 増田周平, 岡野邦宏, 佐藤丈実, 西村修

    日本水環境学会年会講演集　50th　575　2016/03/10

  20. 活性汚泥法と人工湿地法を組み合わせた水質汚染指標細菌の除去 (第53回下水道研究発表会講演集)

    板倉 帆希, 熊井 健人, 千葉 信男, 西村 修, 中野 和典

    下水道研究発表会講演集　53　16-18　2016

    Publisher: 日本下水道協会

  21. 浄化槽のDO制御による処理性能および温室効果ガス排出量への影響

    山崎宏史, 蛯江美孝, 西村修

    日本水処理生物学会誌 別巻　(34)　55　2014/10/20

    ISSN： 0910-6766

  22. Low-carbon and Advanced Treatment of Domestic Wastewater by the Combination of Johkasou and Ecological Engineering System

    56　(10)　713-718　2014/10

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  23. 8-1-28 カリ欠乏下で代替吸収される元素の優先順位の作物間差とセシウム吸収 : 代替吸収から推定した作物の最適カリ含有量(8-1 環境保全,2014年度東京大会)

    長谷川 栄一, 相川 良雄, 西村 修

    日本土壌肥料学会講演要旨集　(60)　149-149　2014/09/09

    Publisher: 一般社団法人日本土壌肥料学会

    ISSN： 0288-5840

  24. Effects of Seed Sludge and HRT on Acidogenic Digestion of Primary Sludge

    56　(2)　138-145　2014/02

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  25. 単細胞緑藻クラミドモナスの鞭毛再生による湖沼蓄積性難分解性物質の影響

    田中仁志, 早川和秀, 藤嶽暢英, 中村省吾, 西村修

    日本水環境学会年会講演集　48th　2014

  26. 震災による宮城県沿岸における生態系の変化

    坂巻隆史, 西村修

    海洋開発シンポジウム論文集　1-6　2014

    More details Close

    CD-ROM

  27. 沿岸浅場のベントス食物網を改変する大型海藻の堆積

    山田勝雅, 金谷弦, 藤林恵, 谷村彩, 西村修, 豊原治彦, 玉置雅紀

    日本ベントス学会・日本プランクトン学会合同大会講演要旨集　2013　124　2013/09/26

  28. Analysis of Long-Term Variation of Phytoplankton Biovolume and Gelatinous Sheath Volume in Lake Biwa

    ICHISE SATOSHI, IKEGAYA HISATO, FURUTA SEIKO, FUJIWARA NAOKI, IKEDA SHOHEI, KISHIMOTO NAOYUKI, NISHIMURA OSAMU

    49　(2)　65-74　2013/06/15

    Publisher: 日本水処理生物学会

    ISSN： 0910-6758

  29. Effects of the Great East Japan Earthquake on the Water Environment of Matsushima Bay

    NISHIMURA Osamu

    36　(2)　49-52　2013/02/10

    Publisher: 日本水環境学会 ; 1992-

    ISSN： 0916-8958

  30. 琵琶湖沿岸帯の底質を用いた藻類のシード保存状況について

    古田 世子, 藤原 直樹, 一瀬 諭, 馬場 大哉, 宮田 直幸, 岸本 直之, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(32)　53-53　2012/10/15

    ISSN： 0910-6766

  31. 人工湿地の水質浄化性能に及ぼす植栽の影響の変化

    中野 和典, 中村 和徳, 矢野 篤男, 崔 紅姫, 高橋 洋, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(32)　50-50　2012/10/15

    ISSN： 0910-6766

  32. 節水機器の導入が浄化槽の処理性能に及ぼす影響解析

    山崎 宏史, 蛯江 美孝, 櫻井 一平, 千葉 信男, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(32)　62-62　2012/10/15

    ISSN： 0910-6766

  33. 琵琶湖沿岸帯における植物プランクトン動態および水質解析

    一瀬 諭, 古田 世子, 藤原 直樹, 岡本 高弘, 岸本 直之, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(32)　42-42　2012/10/15

    ISSN： 0910-6766

  34. 6-4 実用規模の人工湿地から採取された土壌動物群集(6.土壌生物,2012年度鳥取大会)

    中村 和徳, 中野 和典, 矢野 篤男, 陶山 佳久, 西村 修

    日本土壌肥料学会講演要旨集　(58)　36-36　2012/09/04

    Publisher: 一般社団法人日本土壌肥料学会

    ISSN： 0288-5840

  35. 琵琶湖沿岸帯における底泥からの植物プランクトンの回帰について

    古田世子, 池田将平, 藤原直樹, 一瀬諭, 田中仁志, 馬場大哉, 岸本直之, 西村修

    日本水環境学会年会講演集　46th　553　2012/03/14

  36. Recovery of Life Environment in the Earthquake Affected Area by Next-Generation Wastewater Treatment System

    54　(1)　79-85　2012/01

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  37. 異なる処理方式の下水処理場における温室効果ガス排出量の季節変動 (第49回下水道研究発表会講演集)

    佐野 慈, 李 玉友, 西村 修

    下水道研究発表会講演集　49　31-33　2012

    Publisher: 日本下水道協会

  38. 下水処理場に由来するメタン・亜酸化窒素の直接排出と間接排出の割合に関する考察 (第49回下水道研究発表会講演集)

    増田 周平, 李 玉友, 西村 修

    下水道研究発表会講演集　49　19-21　2012

    Publisher: 日本下水道協会

  39. PK-18 Metatranscriptomic approach of earthworm gut microbiota(PK Interaction and symbiosis,Poster session)

    Nakamura Kazunori, Makino Takashi, Suyama Yoshihisa, Nishimura Osamu, Nakano Kazunori

    (28)　174-174　2012

    Publisher: 日本微生物生態学会

  40. 人工湿地における水質浄化性能の季節安定性評価

    千木良 純貴, 中野 和典, 丸尾 知佳子, 千葉 信男, 野村 宗弘, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　42-42　2011/10/15

    ISSN： 0910-6766

  41. 道路流出水中の共存条件における各種陰イオンの吸着除去評価

    繁泉 恒河, 丸尾 知佳子, 中尾 和典, 野村 宗弘, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　10-10　2011/10/15

    ISSN： 0910-6766

  42. 浄化槽処理水質における地域差の要因解析

    松橋 仁, 高橋 直樹, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　41-41　2011/10/15

    ISSN： 0910-6766

  43. マルタニシの生息により改変された底質の脂肪酸組成が動物群集に与える影響

    長田 祐輝, 藤林 恵, 高橋 真司, 丸尾 知佳子, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　8-8　2011/10/15

    ISSN： 0910-6766

  44. 底生微細藻類の光合成が干潟好気性微生物の代謝に及ぼす影響

    阿久津 正浩, 慎 祐〓, 野村 宗弘, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　94-94　2011/10/15

    ISSN： 0910-6766

  45. Anabaena の休眠細胞に関する生理生態学的研究

    矢島 悠一, 野村 宗弘, 中野 和典, 西村 修, 一瀬 諭

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　77-77　2011/10/15

    ISSN： 0910-6766

  46. ファーストフラッシュ浄化施設による道路流出水の処理

    中野 和典, 丸尾 千佳子, 相川 良雄, 西村 修, 田中 仁志, 亀田 豊, 山本 道広, 力石 伸夫

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　35-35　2011/10/15

    ISSN： 0910-6766

  47. 浄化槽における流入水量の変動が温室効果ガス排出量に及ぼす影響解析

    山崎 宏史, 蛯江 美孝, 徐 開欽, 稲森 悠平, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　2011/10/15

    ISSN： 0910-6766

  48. Start-up Water Purification Performance of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Run-off

    NAKANO KAZUNORI, CHIGIRA JUNKI, SONG HAI-LIANG, YANO TOKUO, MARUO CHIKAKO, NOMURA MUNEHIRO, AIKAWA YOSHIO, NISHIMURA OSAMU

    Japanese journal of water treatment biology　47　(3)　103-110　2011/09/15

    Publisher: 日本水処理生物学会

    ISSN： 0910-6758

  49. 処理方式の異なる3つの下水処理プロセスにおける温室効果ガス排出特性の評価 (第48回下水道研究発表会講演集)

    佐野 慈, 李 玉友, 西村 修

    下水道研究発表会講演集　48　169-171　2011

    Publisher: 日本下水道協会

  50. PA-040 鉛直流型人工湿地ろ過層内における微生物及び動物相の解析(PA 水処理生態系,ポスター発表)

    中村 和徳, 中野 和典, 矢野 篤男, 陶山 佳久, 西村 修

    日本微生物生態学会講演要旨集　(27)　75-75　2011

    Publisher: 日本微生物生態学会

  51. 人工湿地のスタートアップ性能に及ぼす植栽の影響

    中野 和典, 千木良 純貴, 宋 海亮, 矢野 篤男, 千葉 信男, 野村 宗弘, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　96-96　2010/10/15

    ISSN： 0910-6766

  52. 底生微細藻類による細胞外有機物の生産が干潟堆積有機物分解に与える影響

    阿久津 正浩, 武地 修一, 慎 祐〓, 野村 宗弘, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　88-88　2010/10/15

    ISSN： 0910-6766

  53. 脂肪酸動態に注目した水田生態系の解析

    長田 祐輝, 藤林 恵, 中野 和典, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　87-87　2010/10/15

    ISSN： 0910-6766

  54. アオコ発生に及ぼす Anabaena spp. の休眠細胞の影響

    矢島 悠一, 土田 幹隆, 野村 宗弘, 千葉 信男, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　14-14　2010/10/15

    ISSN： 0910-6766

  55. 伊豆沼実験湖沼内の大型水生植物群落水が Microcystis の生長に及ぼす影響

    武田 文彦, MATOBA David, 佐々木 久雄, 相川 良雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　25-25　2010/10/15

    ISSN： 0910-6766

  56. 固液分離プロセスに着目したディスポーザ対応浄化槽における運転操作条件と窒素除去特性の関係解析

    山崎 宏史, 鈴木 理恵, 蛯江 美孝, 稲森 悠平, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　2010/10/15

    ISSN： 0910-6766

  57. Advanced Treatment and Life Cycle CO_2 Evaluation for Household Johkasou System with Garbage Disposer

    YAMAZAKI HIROSHI, SUZUKI RIE, EBIE YOSHITAKA, XU KAI-QIN, INAMORI YUHEI, NISHIMURA OSAMU

    Japanese journal of water treatment biology　46　(2)　99-107　2010/06/15

    Publisher: 日本水処理生物学会

    ISSN： 0910-6758

  58. The properties of the gas emission of methane and nitrous oxide from akita seaside sewage treatment plant

    Masuda Shuhei, Kyono Takafumi, Li Yu-you, Nishimura Osamu

    Annual report of the Society for the Promotion of Construction Engineering　45　9-15　2010/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  59. The property of the N2O emission from the wastewater treatment

    Journal of water and waste　52　(3)　213-226　2010/03

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  60. 南蒲生浄化センターにおける温室効果ガス発生量調査業務委託報告書 Invited

    財団法人建設工学研究振興会, 西村修, 研究代表者, 李玉友, 増田周平

    2010/03

  61. Performance of heavy metal removal by reed biosorbent and its mechanism

    51　(7)　581-588　2009/07

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  62. Effects of dissolved silicon concentration on density and dominant rate of periphyton

    Nishimura osamu, Jeon Kyoungho, Lim Doyoung, Nakano Kazunori, Nomura Munehiro, Chiba Nobuo

    Annual report of the Society for the Promotion of Construction Engineering　44　25-32　2009/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  63. Influence of Selective Withdrawal on Water-Bloom Occurrence in Urushizawa Dam Reservoir

    NISHIMURA Osamu, NOMURA Munehiro, Nakano Kazunori, CHIBA Nobuo, JEON Kyoungho, TSUBONE Fumiyoshi

    Annual report of the Society for the Promotion of Construction Engineering　43　21-30　2008/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  64. The relationship between changes of algae and environmental factors in the Urusizawa reservoir

    TSUBONE Fumiyoshi, NOMURA Munehiro, CHIBA Nobuo, NAKANO Kazunori, NISHIMURA Osamu

    (27)　19-19　2007/10/15

    ISSN： 0910-6766

  65. Evaluation of allelopathic effect using growth characteristics of freshwater microalgae

    SHIOIRI Mariko, TAKEDA Fumihiko, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

    (27)　45-45　2007/10/15

    ISSN： 0910-6766

  66. Study on Nutrient Removal Ability by Surface Flow Constructed Wetland Utilizing Luffa cylindrica under High Nutrient Loading Rate

    TANAKA Yuusuke, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

    (27)　20-20　2007/10/15

    ISSN： 0910-6766

  67. Ecotechnology for improving water quality in stagnant waters

    NISHIMURA O.

    (27)　5-5　2007/10/15

    ISSN： 0910-6766

  68. Removal of Nitrate Nitrogen using Sludge from Biological Treatment Process as Hydrogen Donor

    INOUE Mitsuru, NISHIMURA Osamu, INAMORI Yuhei

    (27)　54-54　2007/10/15

    ISSN： 0910-6766

  69. Influence of nutrient on allelopathic effect of polyphenols on microalgae

    TAKEDA Fumihiko, SHIOIRI Mariko, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

    (27)　88-88　2007/10/15

    ISSN： 0910-6766

  70. Change of Si, N and P by benthic algae in river water

    LIM DoYoung, JEON KyoungHo, CHIBA N., NAKANO K., NISHIMURA O.

    (27)　59-59　2007/10/15

    ISSN： 0910-6766

  71. Effect of Disposer Wastewater Treatment System on Garbage Including Organic Carbon Materials

    YAMAZAKI Hiroshi, NISHIMURA Osamu, SUZUKI Rie, EBIE Yoshitaka, INAMORI Yuhei

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(27)　69-69　2007/10/15

    ISSN： 0910-6766

  72. Characterization and mechanism of sediment carbon dynamics in estuarine tidal flats

    Kaiyo monthly　39　(9)　586-592　2007/09

    Publisher: 海洋出版

    ISSN： 0916-2011

  73. Investigation of Water-Bloom Control Effect based on Characteristics of Water Quality Stratification in Urushizawa Dam Reservoir

    NISHIMURA Osamu, NOMURA Munehiro, NAKAMURA Kazunori, CHIBA Nobuo, SHITARA Kazuhiko

    Annual report of the Society for the Promotion of Construction Engineering　42　27-35　2007/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  74. メタン発酵法による廃棄物系バイオマスの循環利用

    李玉友, 西村修

    混相流　21　(1)　29-38　2007/03

  75. ディスポーザ導入型排水処理システムにおける生ごみ成分が機能に及ぼす影響解析

    山崎宏史, 西村修, 鈴木理恵, 戸上公博, 蛯江美孝, 稲森悠平

    日本水環境学会年会講演集　41st　2007

  76. ヨシを原料とした重金属吸着剤の開発--ヨシの循環利用システムの確立を目指して

    中野 和典, ブンヘン スティチャック, 西村 修

    水　49　(1)　24-30　2007/01

    Publisher: 月刊「水」発行所

    ISSN： 0287-671X

  77. 脱窒過程における亜硝酸還元速度と硝酸態窒素との関係

    石井 晴彦, 中野 和典, 野村 宗弘, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　17-17　2006/10/15

    ISSN： 0910-6766

  78. 褐藻アカモクを材料とした重金属吸着剤

    ブンヘン スティチャック, 中野 和典, 野村 宗弘, 千葉 信男, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　71-71　2006/10/15

    ISSN： 0910-6766

  79. マコモの植栽基盤がハクチョウの摂食及びマコモの成長に与える影響

    岩淵 藍子, 中野 和典, 千葉 信男, 野村 宗弘, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　74-74　2006/10/15

    ISSN： 0910-6766

  80. 活性汚泥系における硝化細菌の共代謝によるエストロゲンの除去挙動

    任 勇翔, 中野 和典, 野村 宗弘, 千葉 信男, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　44-44　2006/10/15

    ISSN： 0910-6766

  81. 同化性有機炭素生成能を用いた浄水処理システムの評価

    吉田 俊幸, 高橋 惇, 千葉 信男, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　52-52　2006/10/15

    ISSN： 0910-6766

  82. 水面積負荷変動がヘチマ浄化水路に与える影響

    千葉 信男, 中野 和典, 野村 宗弘, 西村 修, 櫻井 一平, 八巻 輝子

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　83-83　2006/10/15

    ISSN： 0910-6766

  83. Siの濃度変化が河床付着藻類群落に及ぼす影響

    林 到映, 田 庚昊, 阿部 早智子, 千葉 信男, 野村 宗弘, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　50-50　2006/10/15

    ISSN： 0910-6766

  84. 生ごみ導入排水処理システムにおける生ごみの生物資化特性解析

    山崎 宏史, 西村 修, 鈴木 理恵, 蛯江 美孝, 稲森 悠平

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　2006/10/15

    ISSN： 0910-6766

  85. Decomposition Rate Measurement of High-Density Organic Wastes

    NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, JEON Kyoungho

    Annual report of the Society for the Promotion of Construction Engineering　41　13-18　2006/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  86. ミナミコメツキガニの生息に及ぼす赤土流出の影響

    多田千佳, 城間安紀乃, MFILINGE Prosper L., 西村修, 土屋誠

    日本水環境学会年会講演集　40th　2006

  87. 中国におけるカンナを利用した水耕栽培浄化法の展開

    任 勇翔, 中野 和典, 西村 修

    水処理技術　46　(6)　283-289　2005/06

    Publisher: 日本水処理技術研究会

    ISSN： 0026-7015

  88. Applicability of reed biomas as an adsorbent material for heavy metal removal

    NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, SOUTHICHAK Bounheng

    Annual report of the Society for the Promotion of Construction Engineering　40　11-16　2005/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  89. 生態工学の可能性と展望

    西村 修, 野村 宗弘

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　11-12　2004/10/15

    ISSN： 0910-6766

  90. 亜硝酸還元過程における動力学的パラメータの決定

    増田 周平, 野村 宗弘, 中野 和典, 西村 修, 水落 元之, 稲森 悠平

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　100-100　2004/10/15

    ISSN： 0910-6766

  91. 排水処理水放流水路に生息する藻類のエストロゲン動態への影響

    大堀 雅人, 任 勇翔, 千葉 信男, 野村 宗弘, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　112-112　2004/10/15

    ISSN： 0910-6766

  92. 温度と含水率依存性分解速度定数に基づくシミュレーションによる高温好気処理の高効率化解析

    田 庚昊, 中野 和典, 野村 宗弘, 西村 修, 水落 元之, 稲森 悠平

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　45-45　2004/10/15

    ISSN： 0910-6766

  93. コアマモと二枚貝の共存する場の特徴について

    大谷 崇, 野村 宗弘, 千葉 信男, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　50-50　2004/10/15

    ISSN： 0910-6766

  94. 赤潮藻類 Skeletonema costatum を用いたバイオアッセイによる褐藻アカモク藻場のアレロパシー効果の検証

    武田 文彦, 中野 和典, 千葉 信男, 野村 宗弘, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　49-49　2004/10/15

    ISSN： 0910-6766

  95. 干潟における堆積物-直上水間の懸濁物質の輸送に及ぼす底質性状の影響

    幸福 智, 野村 宗弘, 坂巻 隆史, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　51-51　2004/10/15

    ISSN： 0910-6766

  96. Nutrients removal characteristics of Spirogyra sp. coupled with water purification plants

    NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, OBUNAI Chie

    Annual report of the Society for the Promotion of Construction Engineering　39　29-35　2004/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  97. ダム湖及び流入河川における同化性有機炭素の動態

    金 志勲, 許 春蓮, 千葉 信男, 西村 修, 秋葉 道宏, 西村 哲治, 安藤 正典

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(23)　16-16　2003/10/15

    ISSN： 0910-6766

  98. 脱窒過程における亜硝酸還元速度の基質依存性

    増田 周平, 中野 和典, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(23)　97-97　2003/10/15

    ISSN： 0910-6766

  99. 高温好気発酵における豚舎廃棄物分解速度の温度依存特性

    中野 和典, 田 庚昊, 千葉 信男, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(23)　124-124　2003/10/15

    ISSN： 0910-6766

  100. アルキルフェノール類が単細胞緑藻クラミドモナスの遊泳速度に及ぼす影響

    田中 仁志, 金 主鉉, 須藤 隆一, 西村 修, 中村 省吾

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(23)　116-116　2003/10/15

    ISSN： 0910-6766

  101. Analysis of treatment ability of Luffa cylindrica planting water purification system

    NISHIMURA Osamu, YAMADA Kazuhiko, NOMURA Munehiro, CHIBA Nobuo, SAKAMAKI Takashi, KAWASAKI.Tuyoshi

    Annual report of the Society for the Promotion of Construction Engineering　38　23-30　2003/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  102. 単細胞緑藻C.reinhardtiiの鞭毛再生に及ぼす農薬の影響

    田中仁志, KIM J-H, 須藤隆一, 西村修, 中村省吾, LEE Y-D

    日本水環境学会年会講演集　37th　2003

  103. 七北田川中流域の砂質河床における堆積有機物量の変動

    坂巻 隆史, PILAILAR Sitang, 泉 典洋, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　22　98-98　2002/10/15

    ISSN： 0910-6766

  104. 淡水二枚貝のろ水速度に及ぼす濁質濃度の影響について

    千葉 信男, 野村 宗弘, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　22　94-94　2002/10/15

    ISSN： 0910-6766

  105. APs 及び APEs の Daphnia magna に対する影響

    星崎 寛人, 渡辺 真利代, 田中 仁志, 金 主鉉, 茂木 守, 須藤 隆一, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　22　46-46　2002/10/15

    ISSN： 0910-6766

  106. 単細胞緑藻クラミドモナスを利用した異なる作用機序を持つ農薬を対象とした影響評価手法の検討

    田中 仁志, 金 主鉉, 須藤 隆一, 海渡 ゆり子, 西村 修, 中村 省吾

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　22　151-151　2002/10/15

    ISSN： 0910-6766

  107. Change of organic substance content of sediment in river mouth tidal flat

    SUDO Ryuichi, NISHIMURA Osamu, YAMADA Kazuhiro, CHIBA Nobuo

    Annual report of the Society for the Promotion of Construction Engineering　37　37-41　2002/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  108. 富栄養実験池の観測データに基づくミクロキスティス増殖モデルの構築

    板山朋聡, 稲森悠平, 西村修

    日本水環境学会年会講演集　36th　2002

  109. 水耕植物浄化水路における底泥からの有機物、栄養塩類の溶出特性と浄化能解析

    李 先寧, 稲石 高雄, 西村 修, 水落 元之, 稲森 悠平, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(21)　36-36　2001/10/15

    ISSN： 0910-6766

  110. 単細胞緑藻クラミドモナスの鞭毛の機能に注目した迅速なバイオアッセイ

    田中 仁志, 金 主鉉, 須藤 隆一, 五井 邦宏, 西村 修, 中村 省吾, 李 容斗

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(21)　109-109　2001/10/15

    ISSN： 0910-6766

  111. Purification of polluted Pond Water by Bio-geofilter Bed System

    SUDO Ryuichi, NISHIMURA Osamu, YAMADA Kazuhiro, KIM Ju-hyon, CHIBA Nobuo

    Annual report of the Society for the Promotion of Construction Engineering　36　1-4　2001/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  112. 干潟生態系の栄養塩循環に及ぼすマクロベントスの影響

    重浩一郎, 坂巻隆史, 西村修, 須藤隆一

    日本水環境学会年会講演集　35th　2001

  113. 干潟の有機物の挙動に及ぼす二枚貝の影響

    坂巻隆史, 重浩一郎, 西村修, 須藤隆一

    日本水環境学会年会講演集　35th　2001

  114. 微細・糸状性藻類の増殖に及ぼす富栄養化湖沼の底泥溶出水の影響解析

    多田千佳, 西村修, 稲森悠平, 松村正利, 須藤隆一

    日本水環境学会年会講演集　35th　2001

  115. Purification of Polluted Pond Water by Bio-geofilter Bed System

    SUDO Ryuichi, NISHIMURA Osamu, YAMADA Kazuhiro, KIM Ju-hyun, CHIBA Nobuo

    Annual report of the Society for the Promotion of Construction Engineering　35　84-87　2000/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

  116. 干潟の栄養塩循環におけるマクロベントスの影響について

    重浩一郎, 坂巻隆史, 西村修, 須藤隆一

    土木学会東北支部技術研究発表会講演概要　1999　2000

  117. 底泥溶出水の藻類の遷移に及ぼす影響解析

    多田千佳, 西村修, 稲森悠平, 松村正利, 須藤隆一

    日本水処理生物学会誌 別巻　(20)　2000

    ISSN： 0910-6766

  118. 富栄養化湖沼の底泥溶出水の藻類増殖能に及ぼす影響評価

    多田千佳, 西村修, 稲森悠平, 松村正利, 須藤隆一

    日本水環境学会年会講演集　34th　2000

  119. 河口干潟のおける窒素の底質-直上水間フラックスの変動特性

    坂巻 隆史, 千葉 信男, 西村 修, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　19　36-36　1999/10/15

    ISSN： 0910-6766

  120. 低濃度汚濁河川水における河床構造の多様化に基づく自然浄化機能の強化

    西村 浩, 美原 将也, 西村 修, 須藤 隆一, 稲森 悠平, 徐 開欽

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　19　10-10　1999/10/15

    ISSN： 0910-6766

  121. 藻類の増殖に及ぼす底泥溶出水の影響

    多田 千佳, 西村 修, 稲森 悠平, 松村 正利, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　19　26-26　1999/10/15

    ISSN： 0910-6766

  122. 活性汚泥から分離した有殻葉状仮足虫類Arcella vulgarisの増殖・捕食特性による硝化指標性の評価

    李 先寧, 金 主鉉, 山田 一裕, 西村 修, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　19　83-83　1999/10/15

    ISSN： 0910-6766

  123. 韓国における畜産ふん尿の処理現況と処理技術

    金 主鉉, 西村 修, 竹下 俊二

    用水と廃水　41　(2)　143-153　1999/02

    Publisher: 産業用水調査会

    ISSN： 0513-5907

  124. The effect of the bottom mud eluent on breeding of algae.

    多田千佳, 西村修, 稲森悠平, 松村正利, 須藤隆一

    日本水処理生物学会誌　1999

    ISSN： 0910-6758

  125. Role of thermophile and mesophile in aerobic fermentation process with high temperature.

    李さん雨, 多田千佳, 西村修, 千葉信男, 須藤隆一

    土木学会年次学術講演会講演概要集 第7部　54th　1999

  126. 窒素負荷の生態系に及ぼす影響のマイクロコズムを用いた解析および評価

    多田 千佳, 西村 修, 稲森 悠平, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　18　117-117　1998/10/01

    ISSN： 0910-6766

  127. 水圏モデル生態系三種系マイクロコズムにおける炭素の移動特性解析

    小松 央子, 稲森 悠平, 板山 朋聡, 西村 修, 松村 正利

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　18　119-119　1998/10/01

    ISSN： 0910-6766

  128. 生態膜を活用した汚濁河川水の直接浄化法における接触材の空隙性、生物膜厚と処理特性との関係に関する解析

    西村 浩, 西村 修, 須藤 隆一, 稲森 悠平, 徐 開欽

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　18　86-86　1998/10/01

    ISSN： 0910-6766

  129. 干出と冠水が干潟底質における有機物・栄養塩の挙動に及ぼす影響

    坂巻 隆史, 千葉 信男, 西村 修, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　18　30-30　1998/10/01

    ISSN： 0910-6766

  130. 干潟モデルにおける浄化能と底生動物ゴカイに及ぼす重油の影響評価

    稲森 悠平, 内藤 友美, 西村 修, 松村 正利, 木村 賢史

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　18　31-31　1998/10/01

    ISSN： 0910-6766

  131. 生態工学を活用した低汚濁海水の浄化 (特集/水中生物防汚技術)

    稲森 悠平, 西村 修, 木村 賢史

    化学工業　49　(6)　449-457　1998/06

    Publisher: 化学工業社

    ISSN： 0451-2014

  132. Evaluation of the analysis using radioisotope of carbon shift in the microcosm ecosystem.

    稲森悠平, 土井妙子, 原田茂樹, 西村修, 小松央子, 松村正利, 板山朋聡, 田中伸幸

    生物利用新技術研究シンポジウム論文集　5th　1998

  133. Transport property analysis of the carbon in the hydrosphere model ecosystem of three breed microcosm.

    小松央子, 稲森悠平, 板山朋聡, 西村修, 松村正利

    日本水処理生物学会誌　1998

    ISSN： 0910-6758

  134. Analysis and evaluation by using the microcosm of the effect of the nitrogen load on the ecosystem.

    多田千佳, 西村修, 稲森悠平, 須藤隆一

    日本水処理生物学会誌　1998

    ISSN： 0910-6758

  135. Analysis and evaluation of influence of nitrogen load on aqueous environment using a model ecosystem.

    多田千佳, 西村修, 稲森悠平, 須藤隆一

    生物利用新技術研究シンポジウム論文集　6th　1998

  136. 水圏生態系モデル三種系マイクロコズムを用いた炭素循環の挙動解析

    小松 央子, 稲森 悠平, 西村 修, 土井 妙子, 板山 朋聡, 松村 正利, 田中 伸幸

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　17　80-80　1997/10/15

    ISSN： 0910-6766

  137. ベントス多毛類ゴカイ(Neanthes japonica)に及ぼす重油の影響評価

    稲森 悠平, 西村 修, 内藤 友美, 青山 莞爾

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　17　78-78　1997/10/15

    ISSN： 0910-6766

  138. 埋立地浸出水中の生物難分解性有機物の物理学的手法を用いた除去特性

    鳥羽 山二郎, 稲森 悠平, 西村 修, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　17　39-39　1997/10/15

    ISSN： 0910-6766

  139. アオコの分散化による微小動物の捕食分解効率の向上

    吉成 暁, 稲森 悠平, 須藤 隆一, 板山 朋聡, 岩見 徳雄, 西村 修

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　17　52-52　1997/10/15

    ISSN： 0910-6766

  140. Behavior analysis of the carbon circulation using the microcosms of three hydrosphere ecosystem models.

    小松央子, 稲森悠平, 西村修, 土井妙子, 板山朋聡, 松村正利, 田中伸幸

    日本水処理生物学会誌　1997

    ISSN： 0910-6758

  141. Improvement in the predation decomposition efficiency of the animalcules by dispersion of the water-bloom.

    吉成暁, 稲森悠平, 須藤隆一, 板山朋聡, 岩見徳雄, 西村修

    日本水処理生物学会誌　1997

    ISSN： 0910-6758

  142. 内湾底生動物の生息環境に関する一考察

    西村 修, 木村 賢史, 稲森 悠平, 須藤 隆一

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　16　104-104　1996/10/15

    ISSN： 0910-6766

  143. クーロメーターを用いた生分解性、水質、微生物相変換からの評価手法の開発

    李 在安, 柳 在根, 沈 瑛燮, 西村 修, 稲森 悠平

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　16　94-94　1996/10/15

    ISSN： 0910-6766

  144. 生物膜法による藻類由来トリハロメタン前駆物質の除去特性

    近山 憲幸, 稲森 悠平, 西村 修, 松村 正利, 杉浦 則夫, 金 周永

    日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　16　55-55　1996/01

    ISSN： 0910-6766

  145. A study on mechanisms and protection of the aquatic ecosystem in closed seawater bodies. Final year of the study.

    内藤正明, 竹下俊二, 西村修, 稲森悠平, 原田茂樹, 渡辺正孝, 相崎守弘, 高松武次郎, 大井紘

    国立環境研究所特別研究年報　1994　3-13　1995/08

  146. Studies on the Restoration System of Polluted Coastal Environment

    SUDO Ryuichi, NISHIMURA Osamu, XU Kai-Qin, YAMADA Kazuhiro, CHIBA Nobuo, KUMAGAI Yukihiro

    Annual report of the Society for the Promotion of Construction Engineering　29　107-114　1994/04/01

    Publisher: Tohoku University

    ISSN： 0288-9994

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Books and Other Publications 17

  1. 環境浄化のための微生物学

    西村修,ほか

    講談社サイエンティフィク　2008/12/10

  2. 河川汽水域

    西村修,ほか

    技報堂出版　2008/06/02

  3. 環境工学の新世紀

    西村修,ほか

    技報堂出版　2008/02/25

  4. 河川の水質と生態系ー新しい河川環境創出に向けて

    西村修ほか

    技報堂出版　2007/05/25

  5. 自然・社会と対話する環境工学

    西村修ほか

    社団法人土木学会　2007/03/31

  6. Civil Engineering

    西村修,ほか

    技報堂出版　2007/03/25

  7. 水環境ハンドブック

    野村宗弘, 西村修ほか

    朝倉書店　2006/10

  8. 河川と栄養塩類ー管理に向けての提言

    西村修ほか

    2005/02

  9. 環境工学公式・数値・モデル集

    NISHIMURA Osamu

    2004/06

  10. 地球環境調査計測事典

    西村修, 坂巻隆史

    2003/03

  11. 環境保全科学入門ー環境の保全と修復ー

    須藤隆一, 西村修, 藤本尚志, 山田一裕

    2003

  12. 流域マネジメントー新しい戦略のためにー

    西村修

    2002

  13. 水産業における水圏環境保全と修復機能

    佐々木久雄, 田中千景, 一宮陸男, 西村修, 谷口和也

    2002

  14. 環境修復のための生態工学

    須藤隆一, 西村修

    2000

  15. 日本の水環境２東北編

    野村宗弘, 西村修, 須藤隆一

    2000

  16. 生活排水対策

    稲森悠平, 高井智丈, 西村修, 山本泰弘

    1998/12

  17. 沿岸の環境圏

    稲森悠平, 高井智丈, 西村修, 水落元之

    1998/08

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Presentations 8

  1. 環境生態工学の可能性ーヨシ湿地による水質浄化 International-presentation

    千葉信男, 須藤隆一

    The 2007 Environmental Societies Joint Conference　2007/05/02

  2. 生態工学の可能性と展望 International-presentation

    東西大学特別講義　2007/02/02

  3. The Problem of Eutrophication Control in Water Resources: Formation of Assimilable Organic Carbon from Algogenic Organic Matter and Its Variation by Chlorine Oxidation International-presentation

    The First International Conference on Sustainable Water Environment: Water Resource and Quality Management,　2005/11/02

  4. 生態工学の可能性と展望 International-presentation

    東南大学特別講義　2005/09/04

  5. 生態工学の可能性と展望

    日本水処理生物学会　2004/10/15

  6. 植物を用いた水質浄化

    （社）日本水環境学会東北支部セミナー　2004/01/24

  7. 自然を活用した内湾・内海の水環境改善対策

    （社）日本水環境学会関東支部講演会 東京湾を考えるー干潟に注目して　2001/02/08

  8. 内湾・内海の汚濁と生態工学による浄化 International-presentation

    第４回地下水土壌学会済州支部国際セミナー　2000/06/23

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Research Projects 31

  1. Advanced treatment of livestock wastewater and waste Competitive

    1997/04 - Present

  2. Control of emission of N2O from wastewater and waste treatment process Competitive

    1997/04 - Present

  3. Study on Environmental Conservation of Enclosed Coastal Seas Competitive

    1988/04 - Present

  4. Innovation of Coupled Bioelectrochemical System to Restore Contaminated Sea bottom Sediment

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows

    Category: Grant-in-Aid for JSPS Fellows

    Institution: Tohoku University

    2019/04/25 - 2021/03/31

  5. Development of a model estimating river biomass using hydrological and periphyton models to control ecological resources

    Kazama So

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2016/04/01 - 2020/03/31

    More details Close

    Distributed model of periphyton was developed using a nutrient transport model and a water temperature model based on a distributed hydrological model. The model accuracy is RMSE=11.5mg/m2 monthly. Positive correlations were observed between the population densities and eDNA concentrations for orders Ephemeroptera, Plecoptera, and Dipetra. Field observations showed significant and positive correlation between periphyton and stream insect biomass. The variation of periphyton biomass as producer influenced consumer biomass in the higher energy position of ecological pyramid.

  6. Environmental assessment of closed sea area based on long-term physical property transition of mud in Matsushima Bay

    Masayuki Nagao

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: National Institute of Advanced Industrial Science and Technology

    2016/04/01 - 2020/03/31

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    At the same sampling points (28 points) for marine sediments as in 2014, surface volumetric materials were continuously sampled over a period of several years to understand the environmental changes seen from the surface sediments. Specifically, from September 30, 2016 to October 2, 2016, two years later, in November 2018, marine sediments were collected in Matsushima Bay, Miyagi Prefecture. In addition, the vertical distribution of water quality was measured with a multi-item water quality meter at all sampling points. In addition, the possibility of surface sediment/terrain classification by image learning by deep learning based on ultrasonic reflection intensity images was verified. In addition, a study based on the microfossil transition in the sediment (ostracoda) was carried out as a part of the joint research of Tohoku University and AIST. Also, a study on the behavior of chemical substances in the surface sediments of Matsushima Bay was presented.

  7. Analyses of food web and biodiversity mechanism of Lake Taihu where the occurrence of water bloom is normalized

    Nishimura Osamu, Okano Kunihiro, Maruo Chikako, Tanaka Nobuyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2016/04/01 - 2019/03/31

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    In this study, it is to clarify how aquatic animals acquire essential fatty acids necessary for survival and reproduction while cyanobacteria predominately over other algae in Lake Taihu. As a result, it was suggested that cyanobacteria might not be an important food source for all aquatic animals appearing in Lake Taihu, but it was important for shrimp. In addition, it was revealed that fish such as Hypomesus nipponensis ingested carbon of cyanobacteria at Lake Hachiro during the occurrence of water bloom. Furthermore, it was revealed that the micrometazoan Aeolosoma can reproduce itself by synthesizing essential fatty acids such as eicosapentaenoic acid.

  8. Development of quantification method of buried carbon derived from seaweed using fatty acid biomarker

    NISHIMURA Osamu, MARUO Chikako

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2016/04/01 - 2018/03/31

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    It is unclear how much marine plant-derived organic carbon remains in the actual waters after thousands of years. In this study, fatty acids in the core sample of sediments of Lake Ogawara was analyzed for the purpose of estimating the residual ratio of higher plant-derived organic carbon. LCFAs, biomarker fatty acids of plants, were detected in the sedimentary layer about 9000 years ago. In addition, carbon isotopic ratio of fatty acid C26:0 was used to separate organic carbon into marine and terrestrial origins. Here, the terrestrial and marine plants were represented by Manchurian wild rice and eelgrass, respectively. As a result, the estimated residual organic carbon content of the marine plant was close to the estimated residual rate of 40% in the previous study. This result suggests that carbon stable isotopic analysis of fatty acids in sediments can reveal buried carbon content from seaweed.

  9. Comprehensive evaluation of nitrous oxide emission in river using the stable isotope ratio and gene approach

    Masuda Shuhei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Akita National College of Technology

    2015/04/01 - 2017/03/31

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    Characteristics of nitrous oxide in rivers such as concentrations, emission ratio of nitrate, and N2O production potential in the river bed were investigated. The N2O concentration increased in early summer based on the long-term survey. Alternatively, the daily variation was observed only in the river that receives nitrogen load, however the pattern was not consistent. Based on the profiles of δ15N and δ18O in nitrate, dissolved N2O concentration increases when the nitrogen compounds inflows to the river. The gene profiles of sediments and N2O concentration was not clear. The N2O production potential was found to be different depending on the nitrogen load qualities. Specifially, the N2O production potential with nitrification in the river bed was high in the rivers that receives ammonium nitrogen.

  10. Elucidation of food resources for the conservation of endangered freshwater bivalves (Unionoida)

    Tanaka Hitoshi, NISHIMURA OSAMU, FUJIBAYASHI MEGUMU, KAWACHI MASABOBU, NISHIO MASAKI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Center for Environmental Science in Saitama

    2013/04/01 - 2017/03/31

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    Freshwater bivalves (Unionoida) help maintain river ecosystems by acting as host shells for Japanese bitterlings and purifying water by removing suspended matter. Habitats and populations of bivalves have decreased throughout Japan, making protection measures urgent. Surveys of rivers with high densities of Unio douglasiae nipponensis showed that the microalgae they feed on were in sufficient supply during the warm water period, which marks the bivalve growing season. Analysis of essential fatty acids, that cannot be synthesized in the body and originate from the natural diet, showed that U. douglasiae nipponensis assimilate green algae and diatoms as well as bacteria. Based on these results, we conducted feeding experiments on U. douglasiae nipponensis using cultured and commercial algae, and achieved successful long-term breeding.

  11. Genetic Assessment of Freshwater Biodiversity in The Alps in Relation to The Spatiotemporal Habitat Heterogeneity of Floodplain

    OMURA Tatsuo, YOSHIMURA Chihiro, TAKEMON Yasuhiro, KAZAMA So, NISHIMURA Osamu, WATANABE Kozo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2012/04/01 - 2015/03/31

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    The purpose of this project is to indicate the target image of biodiversity and its formation mechanism for suitable river restoration in the European Alps through an intensive investigations of reference semi-natural basins remained in northeast Italy. We clarified the true species richness of stream invertebrate communities in the basins by addressing the potential problem of poor morphological taxonomy (e.g., many undescribed species) applying an new technique of DNA sequence based taxonomy. We found the ecological importance of spatial environmental heterogeneity among habitats and microhabitats (e.g. large woody debris) in sustaining the high biodiversity in the natural river system. In addition, satellite and mountain camera image analyses for tracing the temporal change of river geomorphology at reach scale allow us to understand significant role of large and frequent flood disturbances in sustaining the high species diversity in the natural floodplain system.

  12. Investigation of benthic environment for recovery of ecological function in Lake Taihu.

    NISHIMURA Osamu, NOMURA Munehiro, FUJIBAYASHI Megumu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2012/04/01 - 2015/03/31

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    The origin of sedimentary organic carbon and assimilated food source of dominant benthic animals were investigated with fatty acid biomarker and stable carbon isotope in hyper-eutrophic shallow lake, Lake Taihu in China. While suspended matter in Lake Taihu contained much more cyanobacteria derived fatty acid biomarker than higher plants, higher-plant-derived fatty acid biomarker was dominant in sediments from whole of the lake in summer and winter. Fatty acid analysis revealed that dominant benthic animals mainly assimilated cyanobacteria not higher plants.The consumption of cyanobacteria by benthic animals may one of the possible explanation for accumulation of higher-plant-derived organic carbon in sediments from Taihu.

  13. The mechanism of polyunsaturated fatty acid synthesis by pond snail and application for conservation of biodiversity.

    NISHIMURA Osamu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2012/04/01 - 2014/03/31

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    Essential fatty acids including 20:5n3, 20:4n6 and 22:6n3 have been widely known as important nutrient for animals. Generally, these fatty acids have been considered to be produced by algal species in aquatic ecosystems. In this study, we found that feaces from freshwater snail and fish included these essential fatty acids even these fatty acids were absent in their food sources. We also found that protozoa swarmed on the feaces but almost no protozoa were detected on the food sources which was original of the feaces in the laboratory experiments. Moreover, significant positive relationship between density of protozoa and concentration of essential fatty acid in the feaces were confirmed. It indicate that essential fatty acid in feaces would be attributed to the presence of protozoa. Swarm of protozoa on the feaces seemed to enhance the nutritional quality of feaces in detrital food web.

  14. EVALUATION AND APPLICATION OF RELATIONSHIP BETWEEN SPECIE DIVERSITY AND GENETIC DIVERSITY USING HYDROLOGICAL DATA

    KAZAMA SO, OMURA Tatsuo, NISHIMURA Osamu, MASAGO Yoshifumi, TAKEMON Yasuhiro, YOKOO Yoshiyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2010/04/01 - 2014/03/31

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    Comparing genetic diversity of H. orientalis Martynov with species diversity using habitat suitability index in Natori River Basin, we obtained 1) both diversities were correlated, 2) dams prevented gene supply from upstream to downstream, 3) genetic diversity of H. orientalis Martynov in the upstream areas increased caused by H. albicephala Tanida intercrossed, as the results. That correlation can apply the distribution map of genetic diversity in the whole basin. This study provided the methodology to obtain the relationship between species and genetic diversities.

  15. Development of constructed wetland to mitigate ecological risk by chemicals in run-off water

    NAKANO Kazunori, NISHIMURA Osamu, NOMURA Munehiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    2010 - 2012

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    Ecological impact of aquatic ecosystem by chemicals in run-off water has been worried. Thus in this study, potential filter media for passive treatment of run-off were screened. As a consequence, hydrotalcite was selected. Then adsorption characteristics of Perfluorooctane sulfonate was evaluated. The effectiveness of passive treatment proposed in this study was demonstrated by full scale experiment conducted at first-flush treatment wetland which is actual passive treatment facility treating road run-off water in Kusatsu city of Shiga prefecture.

  16. Effect of Benthic Microalgae on Microbial Loop in Intertidal Flat Ecosystem

    NISHIMURA Osamu, NOMURA Munehiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2009 - 2011

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    Laboratory incubation experiments were carried out to evaluate the effect of benthic microalgal photosynthesis on microbial loop in intertidal flat ecosystems. The results showed that the decomposition of long chain fatty acids, which are comparatively refractory components in sediment organic matter, was promoted resulting from benthic microalgal photosynthesis. Furthermore, the stable isotope ratios of not only bacterial fatty acid but also diatom fatty acid were decreased clearly. Therefore, it was considered that benthic microalgal photosynthesis enhanced detritus food chain.

  17. 酸性鉱山廃水処理のためのヨシ起源重金属吸着剤を活用した人工湿地法の開発

    西村 修, BOUNHENG SOUTHICHAK, SOUTHICHAK Bounheng

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特別研究員奨励費

    Category: 特別研究員奨励費

    Institution: 東北大学

    2008 - 2009

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    亜鉛は、植物や動物にとって必須の微量元素であるものの、感受性の高い水生生物は低濃度でも悪影響を受けるため、適正な排水処理が必要である。本研究では海藻をパッキングしたカラムと砂ろ過カラムを組み合わせて亜鉛を除去する2段プロセスを構築し、バイオソルベントとして、および硫酸還元菌の炭素源としての海藻の相乗的な効果を調べた。 海藻をパッキングしたカラムによる亜鉛の除去率は74～95%で、砂ろ過カラムを通過した後には82～99%に上昇した。75日間ブレークスルーせず、安定的な亜鉛の除去率を保った。 亜鉛で飽和した海藻カラムに対して硫化水素イオンを脱着剤に用いて溶出実験を行った。最初の10min(30mL)で急速な亜鉛濃度の増加を示し、10～30min(60mL)で濃度は低下しフラットになった。これは添加したHS^-溶液がバイオマスに吸着飽和している金属の置換を効果的に行っていることを示唆する。すなわち、海藻カラムにおけるバクテリアによるHS^-の生産は、亜鉛との相互作用が可能であり、硫化亜鉛の形で、亜鉛を再生させることがわかった。 海藻カラムで除去された亜鉛の形態としてはアモルファス型結合フラクションが最も多く、ついで結晶酸化物、硫化物であった。一方、砂ろ過カラムの底層から抽出した亜鉛の量は海藻カラムのそれより大きく、有機成分が最も多く、ついで硫化物,炭酸塩の順であった。これは亜鉛と結合した海藻デトリタスが海藻カラムから砂ろ過カラムの底層へ移動したことを示唆する。 また、海藻バイオマスの2つの機能、バイオソルベントとしての亜鉛の吸着および硫酸還元菌の炭素源供給によって、99%以上の高い亜鉛除去率がもたらされ、最終濃度は0.7-0.01mg/Lに低下させることができた。そして、本実験期間(75日間)で吸着平衡は見られず、生物学的に発生した硫化水素イオンとバイオソルベントに結合した亜鉛の置換により除去が行われているためと考えられた。

  18. 淡水資源保全のためのエコテクノロジーの活用による環境汚染有機物質の高度処理

    西村 修, 宋 海亮

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特別研究員奨励費

    Category: 特別研究員奨励費

    Institution: 東北大学

    2007 - 2009

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    エストロゲンは,放出源として考えられている下水処理水の総エストロゲン様活性の主要原因物質であると考えられている.近年,低コストかつ環境にやさしい高度処理として人工湿地を使った処理が欧米にて広まっているが,そのエストロゲン除去能に関する研究は少ない. 本研究では下水二次処理水対象として、既存の代表的な表面流方式および伏流方式の2種類の人工ヨシ湿地を用いて,そのエストロゲン浄化効果を検討した. 水位においては地表面上にある表面流方式と,地表面下にある伏流方式について比較した結果,エストロゲンは水位によらずいずれも大きく減少することが明らかとなった.表面流方式と伏流方式の人工湿地におけるエストロゲン除去能がほぼ同様であることが確認された.さらに地表面上に有る場合に藻類が繁殖したことから遮光により繁殖を抑えたところ,エストロゲン除去能が大きく抑制された.このことから,地表面上にある場合は,藻類が繁殖しエストロゲン除去能に対し影響を与えていることが明らかとなった. さらに室内実験にても藻類のエストロゲン除去能を確かめられ,また,抗生物質を添加の有無に関わらず,エストロゲンが同様に減少したことから,藻類と共在する細菌によるものではなく,藻類自体の除去能であることが明らかとなった.

  19. Evaluation of eutrophication control function of shallow sea area

    NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2005 - 2007

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    In order to improve the responsibility of inter-city transport facility plan to cancellation and delay risks, especially airports in non metropolitan area, where automobiles are mainly used for access measure, the following researches were conducted in these three years. 1. Measuring automobile traffic flows on routes entering airport: To grasp the behavior of airport users in time dimension, automobile traffic flows around Oita, Sendai and Hiroshima Airports were measured by portable traffic counters, covering also the case of cancellation or delays of flights. 2. Analysis of behavioral changes by cancellation or delay: Independent Component Analysis method was applied to the above measured traffic data and grasp some typical change of behavior due to cancellation and delays at Hiroshima. 3. pre-information of the flight cancellation and delay: Average arrival time to the airport calculated through the traffic flow data, and geographical distribution of trip origins are considered to estimate the required timing fpre-information of flight cancellation and delay. 4. Conflicts among the stakeholders of terminal facility planning: In order to avoid the delay of planning process due to the conflicts among the stakeholders, a typical facility planning process is divided into sub-planning process based on the pre-determined unique quantity of traffic, based on non-delay, non-cancellation basis. 5. Improvement of planning process aiming to be risk-responsive: We proposed a new process of planning by adding performance check process in case of cancellation or severe delays. Inddependent Component Analysis method was applied to historical flight time data, in order to pick up several typical delay patterns.

  20. 栄養塩吸収特性が異なる植物種の組み合わせによる植生浄化技術の高度化

    中野 和典, 西村 修, 野村 宗弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 萌芽研究

    Category: 萌芽研究

    Institution: 東北大学

    2004 - 2005

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    本研究は、これまで見落とされてきた糸状藻類Spirogyra sp.の有効性を発掘し、植生浄化水路において異なる栄養塩吸収特性を持つ植物種を組み合わせることの有用性および栄養塩吸収特性に基づいて植物の配置場所を最適化することの有用性を明らかにすることを目的とした.本年度における研究成果を以下にまとめた. 1.糸状藻類や雑草の影響がない高等植物(ヘチマ)単独での浄化性能を実証するために,水面を遮光した植栽浄化水路を休耕田に設置し,遮光しなかった場合との比較を行った.その結果,雑草等まで含めた植物バイオマスの生成量にはあまり差がないにもかかわらず,水質浄化性能は遮光した方が明らかに上回る結果となった.これはSSおよびリンの沈殿が遮光系においてより促進された結果であることが分かった. 2.水路に発生した植物根の全長測定により,遮光により根長が7倍増加しており,これが沈殿を促進し水質浄化性能に貢献していることが明らかとなった. 3.本年度に設置した植生浄化水路には,遮光の有無に関わらず想定していた糸状藻類が発生しなかった.その原因は,遮光系で得られた高い水質浄化性能に合わせて水面積負荷を増加させたことにあると考えられ,糸状藻類の発生の限界となる流速が存在することが示唆された. 4.植生浄化水路における糸状藻類の水質浄化性能の確認が行えなかったため,初年度の実験室でのベンチスケール実験で得た浄化速度式を利用して,水面を遮光した植栽浄化水路の下流部に糸状藻類植栽区を設けた場合に期待できる水質浄化性能のシミュレーションプログラムを作成した.本シミュレーションプログラムにより,糸状藻類や高等植物を単独で利用するケースとこれらを組み合わせたケースそれぞれが,どのような条件(流入負荷条件,目標水質,植生面積)に適しているのかを明らかにすることができた.

  21. Development of nutrient circulation model for ecological system control in estuary

    SAWAMOTO Masaki, OMURA Tatsuo, MANO Akira, NISIMURA Osamu, IZUMI Norihiro, KAZAMA So

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: TOHOKU UNIVERSITY

    2002 - 2004

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    Title Development of nutrient circulation model for ecological system control in estuary In order to develop nutrient circulation model in estuary, the behavior of nutrient is investigated in river basin, river beds, rivermouth and estuary. The main results are as follows 1.The mechanism of nutrient origin in river basin was surveied and a numerical model was developed in the Natori River basin, The difference between ordinal flow condition and floods was clearly observed. The nutrient load was evaluated in various mode of transport. 2.The feature of nutrient transport in river was measured and modeled. Nutrient exchange between flow and river bed was anlysed and inportance of river bed was confirmed in circulation process. 3.Behavior of saline wedge was observed at the Abukuma rivermouth. The mixing processes of water and nutrient were analyzed. The spread of nutrient in the sea was also studied. 4.The equilibrium model for humic-iron complex in estuarine condition was developed on the basis of Dubye-Huckel theory taking account of the electrostatic interaction between iron and humic substance. The dissociation of humic-iron complex with increasing tonic strengh in estuaries was well explained by the developed model. 5.Behavior of ecosystem at the river mouth was estimated by the tidal flat model. It was found that microalgae on sediment decrease the accumulation of organic matters in the model. Furthermore, the model showed flow of organic matter in bivalve-dominant system become more active than that in control system. Therefore, bivalves might be useful to inhibit the accumulation of organic matters. 6.A physical model of staratification and mixing in closed bay was developed. The heat balance and water exchange at bay mouth were taken in consideration. The results show good agreement with observation.

  22. Development of Thermophilic Oxic Process for High Rate Degradation of Livestock Organic Waste and Recovery of Nitrogen and Phosphorus Resources

    NISHIMURA Osamu, WATANABE Toru, YAMADA Kazuhiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    1999 - 2001

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    In this study, bench scale and pilot plant experiment using a swine waste were carried out in order to develop thermophilic oxic fermentation process for high rate degradation of livestock organic waste and recovery of nitrogen and phosphorus resources. The results obtained by this study are summarized as follows. 1) In bench scale experiment, it was possible to remove carbon of about 86% and moisture of 98% under the conditions of BOD loading of 3 kg m^<-3> day^<-1>, air flow of 100 L m^<-3> min^<-1> and adding edible oil of 120 mL. 2) 55% was optimum as average water content, and ATP concentration and thermophile number became highest under this condition. 3) As a result of the long-term operation in bench scale experiment, it was able to treat swine waste efficiently during first 60 days and the treatment efficiency lowered after that. The treatment efficiency was recovered by changing cedar chip of 50% on day 86. 4) In the pilot plant experiment, 64℃ of fermentation temperature and weight loss rate of 91% were achieved. In the water, which accumulated in the cooler, high concentrated T-N was detected, though TOC and T-P were not detected. It was cleared nitrogen was removed as an ammonia gas. 5) By shortening input interval of organic waste from 24 hours to 8 hours, treatment volume increased over the double. It was shown that the optimization of input condition of organic waste enabled the high rate degradation.

  23. Development of creation technology of tidal flat blotope for reduction of nitrogen and phosphorus loads and efficient use of treated sewage

    NISHIMURA Osamu, MIZUOCHI Motoyuki, INAMORI Yuhei, YAMADA Kazuhiro, SAKAMAKI Takashi, XU Kaiqin

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    1998 - 2001

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    In order to develop a creation technology of tidal flat biotope for reduction of nitrogen and phosphorus loads and efficient use of treated sewage, we studied on the self-purification function of tidal flats, such as nutrients uptake by reed wetland, nutrients cycle and denitrification in tidal flat and nutrients uptake by seaweed bed. The results of this study are summarized as follows. 1) Reed wetland The effect of porosity of the filling carrier on removal capability of nutrients from treated sewage was analyzed. Nitrification and denitrification by the rhizosphere microorganism were important for the nitrogen removal, and the simultaneous reaction of nitrification and denitrification occurred under appropriate conditions of porosity and water surface loading. The removal of phosphorus was mainly carried out by the adsorption to the carrier. Therefore, high removal efficiency was obtained by the carrier with low porosity. 2) Tidal flat The purification function of attached animal that lived for the revetment of the Tokyo inner bay was evaluated. The attached animal purified organic matter of 19t-COD/day at revetment distance of 192km, and this value corresponded to 23% of COD that flows from Tokyo. The environment factors concerning fluctuations of biomass and species of macrobenthos inhabiting in the Kasai artificial beach were analyzed. The benthos was damaged in the rainfall time. It was due to the inflow and retention of river water. When the river water had been increased by rainfall, the water quality in Kasai artificial beach became a low salinity by the structural problem, and some kinds of bivalve died. 3) Seaweed bed The nutrient uptake rate of Sargassum horneri became the highest from May to June in which the growth rate was also the highest We could make the equation of the nutrient uptake rate which was the function of growth stage, nutrient concentration, illumination intensity and temperature. The effect of nutrients uptake by S. horneri on the nutrients cycle of Matsushima Bay was evaluated. The S. horneri bed in May absorbed about 70% of the nutrients inflow load, and it greatly contributes to improving water quality.

  24. Studies on the Effect of River structure on River Ecosystem

    XU Kaiqin, NISHIMURA Osamu, SUDO Ryuichi, INAMORI Yuhei, YAMADA Kazuhiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: NATIONAL INSTITUTE FOR ENVIRONMENTAL STUDIES

    1997 - 1999

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    The objective of this is study was to investigate the behavior of nitrogenous biological oxygen demand in river ecosystem, to search a method to create an ecological river environment through the biotope method, to clarify the relationship between river structure and the water purification function, and the role of riffles and pools in river water purification systems. The results obtained can be summarized as follows : 1) Nitrogenous biological oxygen demand (N-BOD) was detected in high frequency in rivers if the effluent from the wastewater treatment plant flows into the rivers, especially, when C/N ratio is low, NH4-N concentration and water temperature are high. This result suggested that the flow of the effluent from sewer system might have negative impact on the river ecosystem due to the defect of DO in the river especially in the pools. 2) It was predicted from a simple simulation model based on the laboratory experimental results that the DO concentration in the pools of the river may decrease to 4 mg/l if the nitrogen compound is high. In order to keep the DO concentration more than 7.5mg/l in pools, it is necessary to decrease the NH4-N concentration less than 0.5mg/l. 3) To maintain a sound river ecosystem environment, it is important to use the ecological river improvement and natural diverse river restoration methods such as biotope and ecological engineering. It is effective to create riffles and pools in strait river banks to improve river water purification function. Riffles and pools play an important role in river ecosystem not only for water purification but also for the habitat of microorganisms. 4) It was proved that to use the purification blocks and nets to create riffles and pools in the river channels, effective removals of organic matter and nitrogen can be expected.

  25. 紙パルプ工場の個々のプロセスにおける現状の物質フローの解析

    秋葉 道宏, 西村 修, 相崎 守弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特定領域研究(A)

    Category: 特定領域研究(A)

    Institution: 島根大学

    1998 - 1998

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    本研究では,紙パルプ工場における水利用サイクルのクローズト化のための基礎的な知見を得ることを目的に代表的なパルプ製造法であるクラフトパルプ(KP)及び古紙パルプの製造プロセス排水特性を明らかにし,その問題点の整理を行い,製造プロセスにおける水利用サイクルのクローズト化の推進に必要な要素技術の検討を行った. 1. エミッションの特色 クラフトパルプ;KP製造は木材チップからパルプの原料となる繊維分を薬剤により取り出し(蒸解),洗浄,精練を終えた着色パルプを薬剤で漂白するプロセスからなる.個々の製造プロセス排水のCDO,BOD濃度は洗浄-精錬排水でそれぞれ260.0,199.0mg/l,漂白排水でそれぞれ680,295.0mg/lであり,漂白排水がCOD,BOD濃度ともに高い値を示した.漂白プロセスの用水使用量は全用水使用量の約40%を占める.従って,工場内の水利用サイクルのクローズト化には漂白プロセスの排水対策を行うことにより用水使用量の削減が推進されると考えられた. 古紙パルプ;古紙パルプの製造は古紙からパルプをパルパーで溶解し,除塵を終えた印刷インクの付着したパルプを薬剤(過酸化水素,界面活性剤)で漂白・脱墨し,洗浄を行うプロセスからなる.個々の製造プロセス排水のCOD,BOD濃度は漂白・脱墨でそれぞれ1340.0,614.0mg/l,洗浄でそれぞれ700.0,571.0mg/lであった. 2. 水利用サイクルのクローズト化の推進に必要な要素技術の検討 新しい漂白技術であるECF(無塩素漂白:キシラーゼとキレート,二酸化塩素)は現行の塩素漂白と比較して,用水使用量が約25%節減し,CODが約50%削減が可能となることがわかった.

  26. Development of water renovation technology in Thailand

    INAMORI Yuhei, FUJIMOTO Naoshi, MIZUOCHI Motoyuki, NISHIMURA Osamu, TANAKA Syuzo, MATSUMURA Masatoshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research

    Category: Grant-in-Aid for international Scientific Research

    Institution: National Institute for Environmental Studies

    1997 - 1998

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    In Thailand, water environment is getting wrong by infuent of domestic and industrial wastewater, In this research project, water renovation technology using bio-ecoengineering was developed for protection of water resources such as lakes and reservoirs. It was meda clear that described as follows. First, water pollution is in progress by large quantity of domestic wastewater flowing into lakes, reservoir and klong in urban area. and coliform bacteria was detected in such water bodies decreasing water quality from the view point of sanitary. It was made clear that non point source pollution, which is lost of surface soil with deforestation, is one of serious problems in agricultural area. And development of countermeasure against these problems is necessary as soon as possible. Secound, as results of survey of food wastewater treatment facility that fixation of microanimal was necessary for wastewater traetment to obtain clear effluent, application of food chain composed of microanimal, guppy and catfish to wastewater treatment was useful for sludge decrease caused by prey-predator interact ion from the investigation of yields of these organisms. Third, low strength wastewater treatment system using constructed wetland with reed and cattail was very useful in tropical area for its high nitrogen removal efficiency and stability because root of such aquatic plant have high nitrogen removal potential and these plant grew all through the year. Furthermore, as results of the survey of blue-green algae and its toxin such as microcystin in lakes and reservoirs utilized as drinking water resource in Thailand that bloom of Microcystis observed in nany water resources and microcystin, which was standardized as 1mug/L in WHO guidline for drinking water quality, was detected over lOOmug/L in muscle area near the taking water station for drinking water and countermeasures against eutrophication was very important in water resource area. As described above, very useful results were obtained in this research project, however, further investigation is necessary for development of effective water renovation technology, easilizalt ion of maintenance of lagoon and small scale wastewater treatment facility and renovation techno logy with low energy and low cost.

  27. 紙パルプ工場の個々のプロセスにおける現状の物質フローの解析

    秋葉 道宏, 西村 修, 相崎 守弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 島根大学

    1997 - 1997

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    本研究では,ゼロエミッションの観点から紙パルプ工場の個々のプロセスにおける物質フロー・エネルギーのインプット/アウトプットに関する解析と評価を行うことを最終的な目的とし,その第1段階として紙パルプ産業における原材料,用水,エネルギーのインプット/アウトプット及び廃棄物(残余物)の発生量とその有効利用の現状を明らかにした.その結果以下の知見を得た. (1)紙の原料には,古紙1,484万t(52%),国産木材パルプ1,046万t(37%),輸入木材パルプ264万t(10%)と木材繊維が全体の94%を占め,その中で古紙の利用率が大きかった.用水使用量は年間50億m^3以上(鉄鋼業,化学工業に次第3位)という膨大な水を使用しており,回収水の利用率は約40%であった.エネルギー消費量は年間1,036万kl(重油換算消費量)であった. (2)残余物の発生量は,年間259万tであり,その内139万t(54%)が有効利用される.有効利用先はセメント原料への利用が最も多く40%を占め,次いで堆肥土壌改良材18%,土木材料(路盤材等)7%であった. 紙パルプ工場の残余物は紙の製品の何十倍も用水を必要とするため残余物にも水分が多く含まれていることであり,特に発生量が多い排水汚泥等が処理・利用上問題となる.用水のリサイクル率が低いのは,回収しにくい製造工程水であるためであるが,排水の汚濁成分が問題となるプロセス(例えば漂白工程)で個別排水処理を行うことによって水の回収を進める余地があると考えられた.

  28. Study on the Immobilization of the Effective Microorganisms Using Biological Activated Carbon

    SUDO Ryuichi, XU Kai-qin, NISHIMURA Osamu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (C)

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1993 - 1994

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    In order to investigate the relation ship between treatment efficiency and operation conditions, characteristics of attachment and desorption of biofilm, and the immobilization of microorganisms on the biological activated carbon. A series of pilot plants called the biological activated carbon fluidized bed process were installed, and the real polluted lake waters (SS=15mg/l, COD=8mg/l) were used in these pilot plant experiments. The result obtained through this experimental study may be summarized as follows. The treatment efficiency for organic matter such as TOC and DOC was found to be increased if the hydraulic retention time (HRT) increased, while the HRT was increased from 0.5 to 2 hours. It was recognized that HRT=1 hour was more reasonable in this process, and the removal of TOC and DOC was more than 40%. In the meantime the removals of SS,ammonium nitrogen and algae were found to be 50%, 55% and 50%, respectively. Although the treatment efficiency decreased after some periods of operation, it can be recovered through the proper backwash by the combination of water and air every two weeks. 10 species of Flagellate, 17 Ciliata, 17 Sarcodina, ( Metazoa (including Rotatoria, Nematoda, Oligochaeta) were investigated in the fluidized bed process. The dominant species were found to be Monas, Vorticella, Epistylis, Stentor and Philodina, and the maximum population was 500/ml. Nematoda was found to be an obstruct organism, its control is still being studied. Pseudomonas, Alcaligenes, Acinetobacter etc. were lso recognized, the population reached to 10^7-10^8/ml. It was verified that the treated water by this process could be used as a source of raw water for water supply.

  29. 沿岸海域における、懸濁性汚濁成分の直接浄化手法に関する研究

    西村 修

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    1993 - 1993

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    沿岸海域においては富栄養化にともなう植物プランクトンの増殖およびそれらの沈降した有機底泥の再浮上によって懸獨性汚濁成分の濃度が高く、透明度が非常に低下した状態であるところが多い。この原因は沿岸域に人工が集中し、また高度利用が進められる中で流入負荷が増大したことおよび自浄能力を持つ砂浜・干潟等の消失に許し考えられる。 本研究では富栄養化により増加した懸濁性汚濁成分を除去するために、直接浄化手法として海岸線に建設されている土木構造物に浄化能力をもたせた人工海岸浄化システムの開発を試みた。具体的には自然の砂浜の持つ浄化能を応用し、防波堤などのコンクリート構造物を砂れき等を材料として透過型の構造に改変した。 実験はおよそ1年間にわたって行ったが、砂れきによって構成された海浜により、懸濁物質の有効な捕捉、その中の有機性汚濁成分の分解・無機化が生じること、硝化が起こること、リンを除去できることなどが明らかとなった。また、透明度は上昇し清澄な水質の水環境を創造できる可能性が示された。 このような現場実験の知見から、人工海浜浄化システムのシュミレーションモデルを構築し、設計に関する諸元としての海浜の材料(砂・れき等)形状(斜面勾配、サイズ等)に関する合理化のための検討を行った。その結果、材料として砂を用いる場合には水の透過が浄化能を律速し、粒径を大きくした場合には反応律速になり、最適な粒径範囲が存在すること、および斜面を持つ形状が浄化能に対して有効であることが示された。

  30. 松島湾における巻き上げが水質に与える影響

    西村 修

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    1992 - 1992

  31. 生物膜法による低濃度原水の窒素,炭素挙動に関する研究

    西村 修

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 東北大学

    1990 - 1990

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Social Activities 8

  1. 模擬授業

    2007/10/24 -

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    磐城高校

  2. 知水講座 宮城県土木部河川課・防災砂防課

    2006/01/20 -

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    「湖沼の水質問題」の講座を開催

  3. 模擬授業

    2005/11/24 -

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    仙台二高

  4. 第3回環境基礎講座ー初学者のための環境基礎講座ー （社）日本水環境学会東北支部

    2005/08 -

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    「浄化技術の実際」の講座を開催

  5. 環境変化と生命研の未来 東北大学大学院生命科学研究科

    2005/03/01 -

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    「生態工学による水環境の修復」を講演

  6. 第2回環境基礎講座ー初学者のための環境基礎講座ー （社）日本水環境学会東北支部

    2004/08 -

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    「浄化技術の実際」の講座を開催

  7. 模擬授業

    2003/10/10 -

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    八戸高校

  8. 第１回環境基礎講座ー初学者のための環境基礎講座ー （社）日本水環境学会東北支部

    2003/08 -

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    「浄化技術の実際」の講座を開催

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  1. 環境修復機能の高い人工干潟設計システム開発に関する研究

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    現在、試行錯誤的、経験的に行われている人工干潟の設計に関して、環境修復機能（水質浄化機能、生物生息機能）の高い人工干潟を合理的に創出するための設計システムを開発することを本研究の目的とした。設計システムは、以下のモデルから構成される。 1. 干潟と周辺海域間の水理・水質学的有機物フローモデル 干潟における懸濁態有機物の直上水－堆積物間での移動に関する評価モデルを開発する。これにより生物生息や水質浄化機能に大きな影響を及ぼす干潟土壌環境（有機物含有率、粒度分布、透水係数など）の予測を目指す。 2. 生物生息地適正評価モデル 干潟における各種環境因子を指標として主要底生動物（二枚貝類、多毛類、甲殻類）の生育生息量が評価可能なHSI(Habitat Suitability Index)モデルを構築する。 3. 水質浄化機能評価モデル 水質浄化を底生動物の年間生産量と呼吸量を足した有機物量と定義しており、主要な底生動物についての浄化原単位を算出する。さらに干潟堆積物における総生産／分解機能も考慮し、干潟の有する水質浄化機能を干潟構造により評価可能なモデルを開発する。