Journal of Japan Society on Water Environment最新文献_第7页

A Study on the Potential Evaluation of Achieving Power Independence and Net Zero CO2 Emission at Sewage Treatment Plant 污水处理厂实现电力独立和二氧化碳净零排放潜力评价研究

Journal of Japan Society on Water Environment Pub Date : 2021-01-01 DOI: 10.2965/JSWE.44.17

T. Fukushima

{"title":"A Study on the Potential Evaluation of Achieving Power Independence and Net Zero CO2 Emission at Sewage Treatment Plant","authors":"T. Fukushima","doi":"10.2965/JSWE.44.17","DOIUrl":"https://doi.org/10.2965/JSWE.44.17","url":null,"abstract":"To achieve power independence and net zero CO 2 emission at sewage treatment plants, a performance evaluation system （ PES ） was used at five sites with a treatment capacity of 150,000 to 200,000 m 3 day -1 , to estimate the power self-sufficiency rate and GHG （ Greenhouse Gas ） intensity. For power independence, the combination of energy saving and energy production measures was evaluated. When the energy saving measures were introduced at Treatment Plant A, the amount of power consumption decreased to 31,840 kWh day -1 （ reduction of about 20% ） , and the power self-sufficiency rate improved to 83%. Moreover, when energy production measures were introduced, the amount of power generation increased to 38,800 kWh day -1 （ increase of about 50% ） , and the power self-sufficiency rate was 105%, which was considered to indicate power independence. To promote net zero CO 2 emission, the GHG intensity and offset rate were evaluated. Even at Treatment Plant A, the GHG intensity was calculated to be 0.17 kg m -3 that net zero CO 2 emission was not reached （ offset rate of 48% ） . By improving the operation of the incinerator, the GHG intensity may be improved to 0.08 kg m -3 （ offset rate of 70% ） . Looking toward the two goals, the power independence and GHG emissions were evaluated, and high potential to realize the envisioned sewage treatment plant was confirmed.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82402168","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

Pilot Study on Fish Species Composition Using Environmental DNA in Marine Sediment 海洋沉积物中环境DNA对鱼类组成的初步研究

Journal of Japan Society on Water Environment Pub Date : 2021-01-01 DOI: 10.2965/jswe.44.79

Tomohiro Shiragaki, Taku Inoue, Hideki Fukuda, Masayuki Ushio, Miki Kusaka, T. Okano, H. Takasu

引用次数: 2

Wastewater-based Epidemiology for Infectious Diseases: The Foundations and Future Perspectives 基于废水的传染病流行病学:基础和未来展望

Journal of Japan Society on Water Environment Pub Date : 2021-01-01 DOI: 10.2965/JSWE.44.125

Wakana Oishi, Yifan Zhu, C. Maruo, M. Saito, M. Kitajima, D. Sano

{"title":"Wastewater-based Epidemiology for Infectious Diseases: The Foundations and Future Perspectives","authors":"Wakana Oishi, Yifan Zhu, C. Maruo, M. Saito, M. Kitajima, D. Sano","doi":"10.2965/JSWE.44.125","DOIUrl":"https://doi.org/10.2965/JSWE.44.125","url":null,"abstract":"Wastewater-base epidemiology may be a promising approach to capturing the dynamics of the spread of diseases as well as emerging mutants in a catchment. Herein, we describe the key components of the wastewater-based epidemiology of viral infectious diseases, including the optimization of the methodology of the detection and quantification of viral genomes and the development of a back-calculation model to estimate the number of infected individuals. Early warning based on the influent viral concentration in a wastewater treatment plant may be feasible when it takes longer than one week to tally the number of patients of the target infectious disease by the currently used sentinel surveillance under the infectious diseases control law. The variables of a back-calculation model are categorized into two types: common variables irrespective of the type of infectious disease and variables specific to the infectious disease including shedding profiles of viruses. Greater effort is required to develop a robust back-calculation model against variability and uncertainty due to environmental, geological, and personal differences.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82788705","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

Effect of Varying Dissolved Oxygen Concentration on Elution of Phosphate from Lotus Paddy Field Soil in Paddy with Abundant Green Algae 不同溶解氧浓度对绿藻丰富的荷花水田土壤中磷酸盐洗脱的影响

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.113

Wataru Iio, Shunsuke Komuro, T. Kitamura, Shun-ichi Matsumoto

{"title":"Effect of Varying Dissolved Oxygen Concentration on Elution of Phosphate from Lotus Paddy Field Soil in Paddy with Abundant Green Algae","authors":"Wataru Iio, Shunsuke Komuro, T. Kitamura, Shun-ichi Matsumoto","doi":"10.2965/jswe.43.113","DOIUrl":"https://doi.org/10.2965/jswe.43.113","url":null,"abstract":"Ibaraki Prefecture produces the largest volume of lotus root in Japan. In a previous study, we reported that the runoff load of total phosphorus (TP) in the Teno area, Tsuchiura city, Ibaraki Prefecture, became maximum in summer. Therefore, in this study, we investigated lotus paddy field with abundant green algae in the Teno area, focusing on the concentrations of dissolved oxygen (DO), TP, and phosphate (PO4-P). As a result, DO in the green-algae-abundant lotus paddy field became supersaturated with increasing amount of green algae. On the other hand, DO in the greenalgae-abundant lotus paddy field showed a concentration decrease to less than 4 mg L with increasing amount of lotus leaves in summer. Furthermore, the concentration of TP with DO of less than 4 mg L was about twice that after the lotus was harvested. The green-algae-abundant lotus paddy field had a significantly higher percentage of PO4-P in TP than the Sakai River agricultural water that was used. These results indicated that the green-algae-abundant lotus paddy field exhibited a reduced DO concentration and increased elution of phosphate from the paddy soil in summer. As a consequence, the concentration of TP in the green-algae-abundant lotus paddy field was increased in summer.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74789390","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

Field Monitoring of Seaweed Bed Construction Using Coal-fly-ash Porous Concrete Panels on Coast of Noto Peninsula, Japan 日本诺东半岛海岸粉煤灰多孔混凝土板海藻床施工现场监测

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.25

O. Miki, Chikako Okumura, Takatoshi Nakazima, C. Sannoh, Yoshito Tanaka, Ryoko Ishikawa

{"title":"Field Monitoring of Seaweed Bed Construction Using Coal-fly-ash Porous Concrete Panels on Coast of Noto Peninsula, Japan","authors":"O. Miki, Chikako Okumura, Takatoshi Nakazima, C. Sannoh, Yoshito Tanaka, Ryoko Ishikawa","doi":"10.2965/jswe.43.25","DOIUrl":"https://doi.org/10.2965/jswe.43.25","url":null,"abstract":"We conducted a pilot-scale experiment for seaweed bed construction using concrete substrata with newly developed fly-ash （ FA ） porous concrete panels or conventional concrete panels from November 23, 2013 to October 14, 2017 in a coastal area of Noto Peninsula, Japan. The FA porous concrete panel was manufactured by replacing 20-40 ％ of the cement with coal fly ash produced in a coal power plant. The total number of Ecklonia kurome sporophytes grown on two substrata after four years was 14 ． The erosion of central lamina began in the third year and the maturing of over 50 ％ of E. kurome sporophytes was observed in the fourth year. A greater number of E. kurome sporophytes tended to grow on FA porous concrete panels than on normal concrete panels; the maximum density of E. kurome sporophytes attached to FA porous concrete panels was 24 individuals per square meter. The final number of E. kurome sporophytes largely differed among the sides of each substratum, which seemed to be strongly affected by waves. No grazing marks of herbivorous fishes and benthic animals were observed during the four years of growth monitoring. These results suggest that E. kurome bed construction using FA porous concrete panels in the coastal area of Noto Peninsula would be possible.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"162 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80951956","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

Chronic Effects on Emergence Ratio and Development Rate of Chironomus yoshimatsui Exposed to Carbendazim in a Sediment-water Exposure System 多菌灵对沉积物-水体暴露系统中吉松手蛾羽化率和发育速率的慢性影响

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.127

Takashi Kuraku, Tasuku Nawaji, Hiromi Andoh, N. Yakata, Masanori Seki

{"title":"Chronic Effects on Emergence Ratio and Development Rate of Chironomus yoshimatsui Exposed to Carbendazim in a Sediment-water Exposure System","authors":"Takashi Kuraku, Tasuku Nawaji, Hiromi Andoh, N. Yakata, Masanori Seki","doi":"10.2965/jswe.43.127","DOIUrl":"https://doi.org/10.2965/jswe.43.127","url":null,"abstract":"Carbendazim is the hydrolysate of benomyl and thiophanate-methyl, which are the active ingredients of pesticides, in the environment. Carbendazim has been detected in environmental water and sediment in Japan, and there is concern that it may have chronic effects on benthic organisms living in aquatic environments. In this study, the Japanese native chironomids Chironomus yoshimatsui were exposed to carbendazim from the first instar larval stage to emergence using a sediment-water system prepared by spiking carbendazim into the sediment. During exposure, the emergence ratio and development rate of C. yoshimatsui were measured. As a result, the no-observed-effect concentration based on the sediment concentration （ NOEC sed ） of carbendazim for C. yoshimatsui was 3.07 mg kg -1 , which was 170 times higher than the highest concentration of 0.018 mg kg -1 in the Japanese environmental sediment. Therefore, it is necessary to consider the results of this study when evaluating the toxicities of benomyl and thiophanate-methyl in sediment in the future.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81805378","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

Experimental Restoration of Fishing Ground of Brackish-water Clam in a Cold Region Using Fluvic Acid Iron Silica Material 冷区苦咸水蛤蜊渔场的酸铁二氧化硅修复试验

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.153

Retsushi Matsuda, T. Sonoda, Y. Azuma

引用次数: 0

Estimation of Potential Habitat for Specific Alien Plant Ludwigia grandiflora subsp. hexapetala Considering Relationship between Significant Wave Height and Ground Level on Lake Biwa Shore 外来植物桔梗亚种的潜在生境评价。琵琶湖岸有效波高与地面高度关系的六边形分析

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.9

Shuhei Tanaka, W. Takami, Tomoya Tabuchi, H. Onishi, N. Tsuji, T. Matsuoka, Hiroaki Nishikawa, S. Fujii

{"title":"Estimation of Potential Habitat for Specific Alien Plant Ludwigia grandiflora subsp. hexapetala Considering Relationship between Significant Wave Height and Ground Level on Lake Biwa Shore","authors":"Shuhei Tanaka, W. Takami, Tomoya Tabuchi, H. Onishi, N. Tsuji, T. Matsuoka, Hiroaki Nishikawa, S. Fujii","doi":"10.2965/jswe.43.9","DOIUrl":"https://doi.org/10.2965/jswe.43.9","url":null,"abstract":"Abstract Vegetation surveys with portable point positioning GPS devices were carried out for a specific alien plant, Ludwigia grandiflora subsp. hexapetala, at 132 communities on the shore of Lake Biwa from 2015 to 2016. The relationship between significant wave height and ground level where the alien plant grew was studied using a database of wind speed, wind direction, and effective fetch at six observation stations around Lake Biwa. The main results are as follows: 1) Ludwigia grandiflora subsp. hexapetala was not observed at communities with significant wave height was greater than 18 cm, 2) Ludwigia grandiflora subsp. hexapetala was observed at 55 communities. They were classified into four groups on the basis of the ground level where the alien plant was observed. The submerged type was found in 20 communities (from Biwako Surface Level (B.S.L.) -150 to -50 cm). The emerged type was found in 14 communities (from B.S.L. -90 to -30 cm). The ecotone type was found in 15 communities (from B.S.L. -50 to -30 cm), and the land type was found in six communities (from B.S.L. -30 to -10 cm), 3) The average significant wave height was 5.5 cm, 9.4 cm, and 13.2 cm, respectively, for submerged, emerged, and ecotone types. The significant wave height might be one of the factors governing the ground level at which the alien plant grows.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"17 1","pages":"9-15"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84537199","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

Economic Analysis of Sewage Sludge Composting on Regional Circular Economy Using Municipal Input-output Table 基于城市投入产出表的污泥堆肥区域循环经济经济分析

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/jswe.43.63

S. Akao, Takano Katsumi, T. Fujiwara, R. Ito, Kuniaki Takahashi, Taichi Akama

{"title":"Economic Analysis of Sewage Sludge Composting on Regional Circular Economy Using Municipal Input-output Table","authors":"S. Akao, Takano Katsumi, T. Fujiwara, R. Ito, Kuniaki Takahashi, Taichi Akama","doi":"10.2965/jswe.43.63","DOIUrl":"https://doi.org/10.2965/jswe.43.63","url":null,"abstract":"The economic effects of the composting of current sewage sludge in Iwamizawa city were investigated compared with the effect of disposing of it. Input-output (IO) tables for each operation, composting or disposing, were compiled and the difference in gross value added (GVA) between the two operations was presented. To create the IO tables, Iwamizawa city’s IO table distributed by the Ministry of the Environment and each operating cost based on past records of Iwamizawa city’s spending were used as original data. Economic ripple effects derived from the operating costs were also included in the compiled tables. As a result, the difference in GVA between the two operations was calculated to be 19.6 million yen year, though the difference in the operational costs was 15.7 million yen year. The use of the sludge dryer was indicated to be a subject of discussion regarding the sustainability of the composting operation. The composting operation can encourage regional demand as local industrial sectors are participating in the operation, and it might lead to larger regional economic ripple effects. The demonstrated analysis could predict an increased amount of GVA, indicating a regional profit. It would be effective for local project assessment.","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86492271","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

都市淡水域における底泥中マイクロプラスチックの濃度分布と起源推定：江津湖 (熊本市) と大濠公園池 (福岡市) を例に城市淡水区域底泥中微塑料的浓度分布和起源推测:以江津湖(熊本市)和大濠公园(福冈市)为例

Journal of Japan Society on Water Environment Pub Date : 2020-01-01 DOI: 10.2965/JSWE.43.107

Yoichi Era, Haruhiko Nakata

引用次数: 2