Journal of Japan Society on Water Environment最新文献_第9页

Verification of Suitability of Fly-Ash-Shell Blocks for Algal Growth: Understanding Growth Characteristics of Periphytic Diatoms by Using Non-Distractive Measurement Method 粉煤灰壳块对藻类生长适宜性的验证:用非干扰测量法了解周边硅藻的生长特性

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.79

M. Honda, M. Imamura, Takuya Kobayashi, Y. Hiei

引用次数: 0

Evaluating the Effects of Operations to Increase Nitrogen Discharge from Sewage Treatment Plants on Concentrations of Organic Matter and Nutrients in Surface Water at Harima-nada in the Seto Inland Sea 评价污水处理厂增加氮排放对濑户内海Harima-nada地表水有机物和营养物浓度的影响

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.43

Motoharu Suzuki, Yusuke Nakatani, Yutaro Koga

{"title":"Evaluating the Effects of Operations to Increase Nitrogen Discharge from Sewage Treatment Plants on Concentrations of Organic Matter and Nutrients in Surface Water at Harima-nada in the Seto Inland Sea","authors":"Motoharu Suzuki, Yusuke Nakatani, Yutaro Koga","doi":"10.2965/jswe.43.43","DOIUrl":"https://doi.org/10.2965/jswe.43.43","url":null,"abstract":"The effects of operations to increase nitrogen discharge from sewage treatment plants to prevent oligotrophication at Harima-nada in the Seto Inland Sea on concentrations of organic matter, nitrogen, and phosphorus in surface water were evaluated. First, the sea waters around the Futami treatment center, which has been conducting the operation, were analyzed. The results show that no significant changes in water quality were observed during the operation. Next, the effects of the operations of 20 sewage treatment plants at Harima-nada on the water quality were simulated using a numerical simulation model. As a result, it was estimated that dissolved inorganic nitrogen and phosphorus were taken up by phytoplankton, and organic matter and nitrogen concentrations in the entire area of Harima-nada were increased by phytoplankton advection and diffusion. The observed values could not confirm the effect of the operation to increase nitrogen discharge at the Futami treatment center owing to dilution by seawater and the drainages of other nitrogen emission sources. However, it was shown that when the number of operations to increase nitrogen discharge from sewage treatment plants increased, the water quality in a wide area of Harima-nada may be affected.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83696331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Relationship between Spring Water Quality and Land Use Type in a Small Area 小区域泉水水质与土地利用类型的关系

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.55

Morio Tsuji, Yutaro Nagasawa, H. Itoh, Masaki Suzuki

引用次数: 0

Binding Affinity Evaluation of Monohydroxydinotefuran and Its Isomers to Acetylcholine Receptor 单羟基呋喃及其异构体与乙酰胆碱受体的结合亲和力评价

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.1

Sayoko Oba, Kouki Kirihara, Masaki Otsuchihashi, H. Takanashi, T. Nakajima, T. Ueda, J. Kadokawa, H. Ishikawa, N. Miyamoto

{"title":"Binding Affinity Evaluation of Monohydroxydinotefuran and Its Isomers to Acetylcholine Receptor","authors":"Sayoko Oba, Kouki Kirihara, Masaki Otsuchihashi, H. Takanashi, T. Nakajima, T. Ueda, J. Kadokawa, H. Ishikawa, N. Miyamoto","doi":"10.2965/jswe.43.1","DOIUrl":"https://doi.org/10.2965/jswe.43.1","url":null,"abstract":"There are some reports that transformation products of a pesticide exist at higher concentrations than their parent pesticide, or their pharmacological activities are comparable to that of a parent pesticide. It is therefore of importance to examine their potential effects on aquatic organisms; however, few studies have focused on the insecticidal activities of a transformation product of dinotefuran, a neonicotinoid pesticide. In this study, dinotefuran’s transformation products were explored by LC-HRMS analyses of dinotefuran aqueous solutions that had been irradiated by a xenon lamp. This exploration resulted in the discovery of two unknown transformation products. Structural elucidations of these two compounds suggested 28 and 82 chemical structures in terms of structural isomers and steric isomers, respectively. Their binding affinities for a glia-derived acetylcholine-binding protein of Lymnaea stagnalis were simulated to estimate their insecticidal activities. Out of 28 candidates, 20 were judged to have significant insecticidal activities. It can be concluded that the simulation of a substance’s binding affinity, the so-called docking simulation, is a promising way to exclude nontoxic substances among a large number of candidate substances.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87467403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Short- and Long-term Effects of Typhoon 0418 on Macrobenthic Community in Tidal Flats on the Coast of Iwakuni in Hiroshima Bay 台风0418对广岛湾岩国海岸潮滩大型底栖生物群落的短期和长期影响

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.97

K. Hiraoka, Yuhei Omich, S. Nakahara, T. Ikeda, M. Okada

{"title":"Short- and Long-term Effects of Typhoon 0418 on Macrobenthic Community in Tidal Flats on the Coast of Iwakuni in Hiroshima Bay","authors":"K. Hiraoka, Yuhei Omich, S. Nakahara, T. Ikeda, M. Okada","doi":"10.2965/jswe.43.97","DOIUrl":"https://doi.org/10.2965/jswe.43.97","url":null,"abstract":"The objective of this study is to clarify the effects of typhoon 0418 on the macrobenthic community in the tidal flats on the coast of Iwakuni in Hiroshima Bay, using monitoring data from 2001 to 2016. Zostera beds disappeared after typhoon 0418 hit in September 2004. The distribution area of the beds recovered to the pretyphoon level after more than eight years, because of two consecutive years of disturbance by typhoons. The bottom sediment of the tidal flats showed large fluctuations in the mud content, COD （ Chemical Oxygen Demand ） and IL （ Ignition Loss ） regardless of changes in the Zostera bed area. Macrobenthic communities showed a drastic decrease in number of species, number of individuals, wet weight and diversity （ H’ ） after typhoon 0418. These values were low during the deterioration period （ from just after typhoon 0418 to 2008 ） of Zostera beds, but became high during the recovery period （ 2009 and later ） . These results show that the presence of Zostera beds is important to the macrobenthic community in tidal flats and that typhoon 0418 had both short- and long-term effects on the macrobenthic community in the tidal flats as it caused physical disturbance and subsequent loss of Zostera beds.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79023794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

土壌抽出物中溶存有機物 (DOM) の微細藻類増殖に及ぼす影響对土壤提取物中溶解有机物(DOM)的微藻增殖的影响

Journal of Japan Society on Water Environment Pub Date : 2019-01-01 DOI: 10.2965/JSWE.42.239

一弘小松, 秀美尾内, 章雄今井, 伸之川崎, Hashim Emi Fazlina, Rajuddin Mohd Kushairi Mohd

引用次数: 0

Contribution of Organic Matter Decomposition in Water Column to Oxygen Consumption in the Inner Part of the Ariake Sea 有明海内部水柱有机质分解对耗氧量的贡献

Journal of Japan Society on Water Environment Pub Date : 2019-01-01 DOI: 10.2965/jswe.42.195

K. Uchino, Haruka Inomata, Saki Tahara, H. Takasu

引用次数: 4

Application of Ferromanganese Slag of Different Sizes as Seaweed Bed Substratum 不同粒径锰铁渣作为海藻床基质的应用

Journal of Japan Society on Water Environment Pub Date : 2019-01-01 DOI: 10.2965/JSWE.42.123

K. Sugimoto, Takanori Sugano, Shigemori Takahama, Hikaru Takashima, Yoichi Takata, M. Okada

{"title":"Application of Ferromanganese Slag of Different Sizes as Seaweed Bed Substratum","authors":"K. Sugimoto, Takanori Sugano, Shigemori Takahama, Hikaru Takashima, Yoichi Takata, M. Okada","doi":"10.2965/JSWE.42.123","DOIUrl":"https://doi.org/10.2965/JSWE.42.123","url":null,"abstract":"The purpose of this study is to investigate the formation of seaweed bed substrata using different sizes of Ferromanganese slag and Ferromanganese slag block in the sea area and by comparing them with the surrounding natural seaweed bed. We were unable to confirm any changes in pH or manganese concentration in seawater as a result of using FMS and FMSB. Small seaweed such as Hypnea grew five months after the material was set up. After 17 months, Sargassum horneri , Myagropsis myagroides , Undaria pinnatifida , and Ecklonia kurome grew on FMS, whereas S . horneri , Sargassum piluliferum , and Ecklonia kurome grew on FMSB. The vegetation transition progressed from undergrowth seaweed to large seaweed. About one year after the installation of the FMS and FMSB substrata, there was no significant difference in the number of seaweed species that grew on FMS and FMSB and the nearby natural seaweed bed. However, there was a small difference in the seaweed biomass between the FMS （ 30-75 mm ） and the surrounding natural seaweed bed. We found that when using smaller material, FMS （ 30-75 mm ） has higher seaweed biomass except in November 2017. By installing FMS and FMSB seaweed beds, we were able to confirm that the gathering fish are similar to those that gather around the nearby natural seaweed bed, but we were unable to confirm the relationship between seaweed biomass, material size, and fish density.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76986832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Practical Enrichment of Strains of Sulfur-oxidizing Bacteria and Economical Medium for Bacterial Leaching 硫氧化细菌菌株的实用富集及细菌浸出的经济培养基

Journal of Japan Society on Water Environment Pub Date : 2019-01-01 DOI: 10.2965/JSWE.42.145

Yousuke Nakamura, M. Otsuka, S. Haruta, D. Omori

{"title":"Practical Enrichment of Strains of Sulfur-oxidizing Bacteria and Economical Medium for Bacterial Leaching","authors":"Yousuke Nakamura, M. Otsuka, S. Haruta, D. Omori","doi":"10.2965/JSWE.42.145","DOIUrl":"https://doi.org/10.2965/JSWE.42.145","url":null,"abstract":"For phosphorus recovery, we used the technique of bacterial leaching to elute phosphorus from night soil sludge incineration ash using sulfur-oxidizing bacteria. The purpose of this study was to obtain practically enriched strains of bacteria suitable for the local environment without a complicated isolation operation and to confirm a simple and economical medium composition. Three bacterial strains were enriched at night soil treatment facilities by using the medium for sulfur-oxidizing bacteria. Two enriched strains had a greater ability to generate sulfuric acid and elute phosphorus than Acidithiobacillus thiooxidans NBRC13701 （ NBRC ） which was used for comparison. Clone library analysis indicated that seven and five kinds of Acidithiobacillus spp. strain were included in these enriched strains, respectively. The ability of another enriched strain for sulfuric acid generation and phosphorus elution did not reach that of NBRC, but it was thought that this enriched strain included only A. caldus with a higher optimal growth temperature than those of the others. With regard to the medium composition, seven of the 11 original components could be omitted. For sulfur, an important substrate, inexpensive desulfurization sulfur could be used. The ability of sulfuric acid generation was unaffected by these changes, but the medium preparation cost was reduced to 1/18.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79534759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Modification of Analytical Procedure for Determining Total Organic Carbon in Lake Waters Using a TOC Analyzer TOC分析仪测定湖泊水体总有机碳分析方法的改进

Journal of Japan Society on Water Environment Pub Date : 2019-01-01 DOI: 10.2965/jswe.42.259

K. Hayakawa, Y. Hirose, T. Okamoto, Syo-ichi Hichiri, T. Ohara, Kiyuki Noto, Shinsuke Inoue

{"title":"Modification of Analytical Procedure for Determining Total Organic Carbon in Lake Waters Using a TOC Analyzer","authors":"K. Hayakawa, Y. Hirose, T. Okamoto, Syo-ichi Hichiri, T. Ohara, Kiyuki Noto, Shinsuke Inoue","doi":"10.2965/jswe.42.259","DOIUrl":"https://doi.org/10.2965/jswe.42.259","url":null,"abstract":"Total organic carbon (TOC) is one of the indicators of organic pollution in aquatic environments. In this study, the pretreatment and measurement procedures employed when using a TOC analyzer with combustion catalytic oxidation are investigated to improve the accuracy of the analysis for samples containing suspended particles. Our results show that ultrasonically disrupting the particles promotes the homogenization of the suspension, which improves the accuracy of the TOC measurement. The TOC analyzer, which was designed to reduce the loss of samples in the injection syringe and the pathway of the equipment, obtained good recovery rates for samples taken from the north basin of Lake Biwa. However, low recovery rates were obtained for samples with high concentrations of suspended solids or dissolved organic matter. The low recovery rates reduced the accuracy of particulate organic carbon (POC) concentrations calculated as the difference between TOC and dissolved organic carbon (DOC) concentrations. It was found that the accuracy can be improved by using different methods (NPOC and TC-IC methods) for TOC combustion oxidation, depending on the sample concentration.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73364496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1