Water Science & Technology: Water Supply最新文献_第8页

Willingness to pay for improved drinking water in southwest coastal Bangladesh 愿意为改善西南沿海孟加拉国的饮用水支付费用

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.047

Ma Islam, Md. Ali Akber, Md. Atikul Islam

引用次数: 8

Application of multivariate statistical methods in the assessment of water quality in selected locations in Jialing River basin in Guangyuan, China 多元统计方法在广元嘉陵江流域选定地点水质评价中的应用

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.058

Yiming Zhang, Yunxiang Li, You-ping Li, Wenyi Da, Mao-Lei Yu, Qiu-mei Quan

{"title":"Application of multivariate statistical methods in the assessment of water quality in selected locations in Jialing River basin in Guangyuan, China","authors":"Yiming Zhang, Yunxiang Li, You-ping Li, Wenyi Da, Mao-Lei Yu, Qiu-mei Quan","doi":"10.2166/WS.2018.058","DOIUrl":"https://doi.org/10.2166/WS.2018.058","url":null,"abstract":"This study evaluated temporal and spatial variations in water quality to understand the characteristics of the Jialing River watershed in Guangyuan City, China. Data on 17 parameters obtained from seven sites from 2012 to 2015, with a total of 329 samples for each parameter, were analyzed using multivariate statistical techniques. Observation months were grouped into two periods (Period A, May–November; Period B, December–April) according to similarities in water quality characteristics through time analysis and cluster analysis (CA). Water temperature (TEMP), flow rate (Q), dissolved oxygen (DO), oils, fluoride (F) and cadmium (Cd) were the most significant parameters for discriminating between the two periods. Through a spatial analysis, the sites were classified into two groups (Groups 1 and 2). Q, total phosphorus (TP), oils, F and fecal coliform bacteria (F. coli ) were the most significant parameters for discriminating between the two groups. Results suggested that TEMP, DO and Cd as functions of time, TP and F . coli as functions of space, and Q, oils and F as functions of both time and space should be monitored closely. The main sources of water pollutant were surface runoff and industrial wastewater, of time, and wastewater from agricultural irrigation, industrial wastewater, and municipal sewage, of space.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"05 1","pages":"147-155"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86133504","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

The ability of household pitcher-style water purifiers to remove microcystins depends on filtration rate and activated carbon source 家用水罐式净水器去除微囊藻毒素的能力取决于过滤速度和活性炭来源

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.081

J. Chaffin, Erica L. Fox, C. Nauman, Kristen N. Slodysko

引用次数: 5

Unreported leaks location using pressure and flow sensitivity in water distribution networks 未报告的泄漏位置利用压力和流量敏感性在供水网络

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.048

F. Salguero, R. Cobacho, M. Pardo

引用次数: 10

Genetic algorithm hyper-parameter optimization using taguchi design for groundwater pollution source identification 基于田口设计的遗传算法超参数优化地下水污染源识别

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.059

Xuemin Xia, Simin Jiang, N. Zhou, Xianwen Li, Lichun Wang

引用次数: 15

Three-dimensional modeling of steady-state flow in lake bank filtration – Brazil 湖岸过滤稳态流的三维模拟-巴西

Water Science & Technology: Water Supply Pub Date : 2019-02-01 DOI: 10.2166/WS.2018.052

Silvia Fernandes Rocha, E. Marques

引用次数: 2

Methodology for the National Water Savings Models- Indoor Residential and Commercial/Institutional Products, and Outdoor Residential Products. 国家节水模型的方法-室内住宅和商业/机构产品，室外住宅产品。

Water Science & Technology: Water Supply Pub Date : 2019-01-01 DOI: 10.2166/ws.2018.136

Jonah Schein, Peter Chan, Yuting Chen, Camilla Dunham, Heidi Fuchs, Virginie Letschert, Michael McNeil, Moya Melody, Sarah Price, Hannah Stratton, Alison Williams

引用次数: 0

Analytical solutions for predicting the maximum pressure drop after pump failure in long-distance water supply project 长距离供水工程水泵故障后最大压降预测的解析解

Water Science & Technology: Water Supply Pub Date : 2018-12-01 DOI: 10.2166/WS.2018.014

Fan Chengyu, Jian Zhang, Xiaodong Yu

引用次数: 4

Determination of chromium (III) ions in water samples by UV–vis spectrometry based on benzyl-functionalized benzimidazolylidene ligand 基于苄基功能化苯并咪唑偶氮配体的紫外-可见光谱法测定水样中铬离子

Water Science & Technology: Water Supply Pub Date : 2018-12-01 DOI: 10.2166/WS.2018.032

Zhenning Yan, Ling Jiang, Cuiying Xu, Jianming Liu

{"title":"Determination of chromium (III) ions in water samples by UV–vis spectrometry based on benzyl-functionalized benzimidazolylidene ligand","authors":"Zhenning Yan, Ling Jiang, Cuiying Xu, Jianming Liu","doi":"10.2166/WS.2018.032","DOIUrl":"https://doi.org/10.2166/WS.2018.032","url":null,"abstract":"Chromium is one of the most notorious environmental pollutants. The development of a sensitive and selective chromium detection method is an important issue. In this paper, cation recognition properties of two benzyl-functionalized benzimidazolylidene ligands towards metal ions were investigated by UV–vis spectrophotometry. The results showed that the receptors had a higher selection of Cr 3+ . The important analytical parameters, such as pH, quantity of the reagents, and their effects on the studied system were investigated. Under the optimum conditions the absorbance of the Cr 3+ -L complex obeys Beer9s law in the Cr 3+ concentration range of 0.05–2.60 μg/mL with the limit of detection of 0.026 and 0.034 μg/mL for L1 and L2, respectively. IR spectrum and DFT calculations were used to explore the coordinating sites and the complex strength of two ligands towards Cr 3+ . The thermodynamic parameters showed that complex formation is a spontaneous exothermic process. The proposed method was successfully applied to the determination of Cr 3+ content in water and alloy samples. The proposed method is seen as a simple and effective way of determining Cr 3+ concentration.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"68 1","pages":"2081-2091"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89879307","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

Bacteriological quality of swimming pool and spa water in Northern Greece during 2011–2016: is it time for Pseudomonas aeruginosa to be included in Greek regulation? 2011-2016年希腊北部游泳池和温泉水质的细菌质量:是否应该将铜绿假单胞菌纳入希腊监管?

Water Science & Technology: Water Supply Pub Date : 2018-12-01 DOI: 10.2166/WS.2018.015

I. Tirodimos, E. Christoforidou, Sofia Nikolaidou, M. Arvanitidou

{"title":"Bacteriological quality of swimming pool and spa water in Northern Greece during 2011–2016: is it time for Pseudomonas aeruginosa to be included in Greek regulation?","authors":"I. Tirodimos, E. Christoforidou, Sofia Nikolaidou, M. Arvanitidou","doi":"10.2166/WS.2018.015","DOIUrl":"https://doi.org/10.2166/WS.2018.015","url":null,"abstract":"The risk of illness or infection associated with recreational water environments is mainly associated with faecal water contamination. Non-faecal human shedding into the pool water or surrounding area is also a potential source of pathogens such as Pseudomonas aeruginosa . The aim of the current study is to describe and evaluate the bacteriological quality of 2,844 swimming pool and jacuzzi/spa water samples in northern Greece during the 2011–2016 period. Bacteriological quality of recreational water includes heterotrophic bacteria, total coliforms and Escherichia coli according to Greek Hygienic Regulation. P. aeruginosa is a significant agent of opportunistic infection in aquatic environments and was also examined in the aforementioned samples. We aimed to indicate the importance of including P. aeruginosa as a recreational water quality indicator in the revised Hygienic Regulation. Data analysis was performed using SPSS 22.0. The quality of all types of swimming pools was evaluated as excellent since less than 5% was found not to meet the regulations. Considering the presence and concentration of P. aeruginosa, the number of samples that would not meet the standards would differ significantly (18.9%). P. aeruginosa was detected in a larger amount of samples (15.2%) than E. coli (0.6%), which indicates that P. aeruginosa should be assessed as an important factor.","PeriodicalId":23573,"journal":{"name":"Water Science & Technology: Water Supply","volume":"92 1","pages":"1937-1945"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80380026","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