Drinking Water Engineering and Science最新文献_第10页

Application of optical tomography in the study of discolouration in drinking water distribution systems 光学层析成像在饮用水分配系统变色研究中的应用

Drinking Water Engineering and Science Pub Date : 2011-12-07 DOI: 10.5194/DWES-4-61-2011

P. Thienen, R. Floris, S. Meijering

引用次数: 10

A new model for the simplification of particle counting data 粒子计数数据简化的新模型

Drinking Water Engineering and Science Pub Date : 2011-12-07 DOI: 10.5194/DWES-5-9-2012

M. F. Fadal, J. Haarhoff, S. Marais

引用次数: 0

Status of organochlorine pesticides in the drinking water well-field located in the Delhi region of the flood plains of river Yamuna 亚穆纳河冲积平原德里地区饮用水井田有机氯农药现状

Drinking Water Engineering and Science Pub Date : 2011-11-11 DOI: 10.5194/DWES-4-51-2011

P. K. Mutiyar, A. Mittal, A. Pekdeger

{"title":"Status of organochlorine pesticides in the drinking water well-field located in the Delhi region of the flood plains of river Yamuna","authors":"P. K. Mutiyar, A. Mittal, A. Pekdeger","doi":"10.5194/DWES-4-51-2011","DOIUrl":"https://doi.org/10.5194/DWES-4-51-2011","url":null,"abstract":"Abstract. This study presents the occurrence of pesticides in a well-field located in Yamuna flood plain of Delhi region. Ground water sampling campaigns were carried out during pre-monsoon and post-monsoon periods covering 21 borewells and 5 Ranney wells. Major 17 organochlorine pesticides (OCP's) along with other water quality parameters were monitored during this period. Pesticide concentrations were determined using GC-ECD, while GC-MS was used for confirmatory purposes. OCP's groups like ∑HCH, ∑DDT, endosulfan and aldrin were observed in this well-field. Concentration of OCPs from Ranney well exceeded the limit (1 μg l−1) prescribed by the Bureau of Indian Standards (BIS) in pre-monsoon season, though OCP levels in borewells were within BIS limits. However, these levels were very close to the World Health Organisation (WHO) and European Union (EU) limit of for pesticides (0.5 μg l−1) in many samples. Borewell produced better quality water compared to the water from Ranney wells. Although, the level of OCP's was slightly lower than prescribed limit of national regulatory agency but such low doses may cause long-term damage to human populations if such water is consumed for longer durations. At low doses OCP's acts as endocrine disrupting agent and cause metabolic disorders in local population.","PeriodicalId":53581,"journal":{"name":"Drinking Water Engineering and Science","volume":"4 1","pages":"51-60"},"PeriodicalIF":0.0,"publicationDate":"2011-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5194/DWES-4-51-2011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71219455","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: 35

CLIPS based decision support system for water distribution networks 基于CLIPS的配水管网决策支持系统

Drinking Water Engineering and Science Pub Date : 2011-10-27 DOI: 10.5194/DWES-4-37-2011

K. Sandeep, K. Rakesh

{"title":"CLIPS based decision support system for water distribution networks","authors":"K. Sandeep, K. Rakesh","doi":"10.5194/DWES-4-37-2011","DOIUrl":"https://doi.org/10.5194/DWES-4-37-2011","url":null,"abstract":"Abstract. The difficulty in knowledge representation of a water distribution network (WDN) problem has contributed to the limited use of artificial intelligence (AI) based expert systems (ES) in the management of these networks. This paper presents a design of a Decision Support System (DSS) that facilitates \"on-demand'' knowledge generation by utilizing results of simulation runs of a suitably calibrated and validated hydraulic model of an existing aged WDN corresponding to emergent or even hypothetical but likely scenarios. The DSS augments the capability of a conventional expert system by integrating together the hydraulic modelling features with heuristics based knowledge of experts under a common, rules based, expert shell named CLIPS (C Language Integrated Production System). In contrast to previous ES, the knowledge base of the DSS has been designed to be dynamic by superimposing CLIPS on Structured Query Language (SQL). The proposed ES has an inbuilt calibration module that enables calibration of an existing (aged) WDN for the unknown, and unobservable, Hazen-Williams C-values. In addition, the daily run and simulation modules of the proposed ES further enable the CLIPS inference engine to evaluate the network performance for any emergent or suggested test scenarios. An additional feature of the proposed design is that the DSS integrates computational platforms such as MATLAB, open source Geographical Information System (GIS), and a relational database management system (RDBMS) working under the umbrella of the Microsoft Visual Studio based common user interface. The paper also discusses implementation of the proposed framework on a case study and clearly demonstrates the utility of the application as an able aide for effective management of the study network.","PeriodicalId":53581,"journal":{"name":"Drinking Water Engineering and Science","volume":"4 1","pages":"37-50"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5194/DWES-4-37-2011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71219361","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: 6

Monitoring water distribution systems: understanding and managing sensor networks 监测供水系统:理解和管理传感器网络

Drinking Water Engineering and Science Pub Date : 2010-09-27 DOI: 10.5194/DWES-3-107-2010

D. D. Ediriweera, I. Marshall

引用次数: 17

Water supply project feasibilities in fringe areas of Kolkata, India 印度加尔各答边缘地区供水工程的可行性

Drinking Water Engineering and Science Pub Date : 2010-09-22 DOI: 10.5194/DWES-4-9-2011

K. D. Roy, B. Thakur, T. S. Konar, S. Chakrabarty

{"title":"Water supply project feasibilities in fringe areas of Kolkata, India","authors":"K. D. Roy, B. Thakur, T. S. Konar, S. Chakrabarty","doi":"10.5194/DWES-4-9-2011","DOIUrl":"https://doi.org/10.5194/DWES-4-9-2011","url":null,"abstract":"Abstract. Water supply management to the peri-urban areas of the developing world is a complex task due to migration, infrastructure and paucity of fund. A cost-benefit methodology particularly suitable for the peri-urban areas has been developed for the city of Kolkata, India. The costs are estimated based on a neural network estimate. The water quality of the area is estimated from samples and a water quality index has been prepared. A questionnaire survey in the area has been conducted for relevant information like income, awareness and willingness to pay for safe drinking water. A factor analysis has been conducted for distinguishing the important factors of the survey and subsequent multiple regressions have been conducted for finding the relationships for the willingness to pay. A system dynamics model has been conducted to estimate the trend of increase of willingness to pay with the urbanizations in the peri-urban areas. A cost benefit analysis with the impact of time value of money has been executed. The risk and uncertainty of the project is investigated by Monte Carlos simulation and tornado diagrams. It has been found that the projects that are normally rejected in standard cost benefit analysis would be accepted if the impacts of urbanizations in the peri-urban areas are considered.","PeriodicalId":53581,"journal":{"name":"Drinking Water Engineering and Science","volume":"4 1","pages":"9-23"},"PeriodicalIF":0.0,"publicationDate":"2010-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5194/DWES-4-9-2011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71220456","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: 4

Negative pressures in full-scale distribution system: field investigation, modelling, estimation of intrusion volumes and risk for public health 全面配电系统中的负压:实地调查、建模、入侵量和公共卫生风险估计

Drinking Water Engineering and Science Pub Date : 2010-07-16 DOI: 10.5194/DWES-3-101-2010

M. Besner, G. Ebacher, B. Jung, B. Karney, J. Lavoie, P. Payment, M. Prévost

引用次数: 17

MUWS (Microbiology in Urban Water Systems) – an interdisciplinary approach to study microbial communities in urban water systems MUWS(微生物学在城市水系统)-跨学科的方法来研究微生物群落在城市水系统

Drinking Water Engineering and Science Pub Date : 2010-07-12 DOI: 10.5194/DWES-3-91-2010

P. Deines, R. Sekar, H. Jensen, S. Tait, J. Boxall, A. Osborn, C. Biggs

{"title":"MUWS (Microbiology in Urban Water Systems) – an interdisciplinary approach to study microbial communities in urban water systems","authors":"P. Deines, R. Sekar, H. Jensen, S. Tait, J. Boxall, A. Osborn, C. Biggs","doi":"10.5194/DWES-3-91-2010","DOIUrl":"https://doi.org/10.5194/DWES-3-91-2010","url":null,"abstract":"Abstract. Microbiology in Urban Water Systems (MUWS) is an integrated project, which aims to characterize the microorganisms found in both potable water distribution systems and sewer networks. These large infrastructure systems have a major impact on our quality of life, and despite the importance of these systems as major components of the water cycle, little is known about their microbial ecology. Potable water distribution systems and sewer networks are both large, highly interconnected, dynamic, subject to time and varying inputs and demands, and difficult to control. Their performance also faces increasing loading due to increasing urbanization and longer-term environmental changes. Therefore, understanding the link between microbial ecology and any potential impacts on short or long-term engineering performance within urban water infrastructure systems is important. By combining the strengths and research expertise of civil-, biochemical engineers and molecular microbial ecologists, we ultimately aim to link microbial community abundance, diversity and function to physical and engineering variables so that novel insights into the performance and management of both water distribution systems and sewer networks can be explored. By presenting the details and principals behind the molecular microbiological techniques that we use, this paper demonstrates the potential of an integrated approach to better understand how urban water system function, and so meet future challenges.","PeriodicalId":53581,"journal":{"name":"Drinking Water Engineering and Science","volume":"3 1","pages":"91-99"},"PeriodicalIF":0.0,"publicationDate":"2010-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5194/DWES-3-91-2010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71219571","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: 4

Metals releases and disinfection byproduct formation in domestic wells following shock chlorination 冲击氯化后家庭井中金属释放及消毒副产物的形成

Drinking Water Engineering and Science Pub Date : 2010-06-04 DOI: 10.5194/DWES-4-1-2011

M. Walker, J. Newman

{"title":"Metals releases and disinfection byproduct formation in domestic wells following shock chlorination","authors":"M. Walker, J. Newman","doi":"10.5194/DWES-4-1-2011","DOIUrl":"https://doi.org/10.5194/DWES-4-1-2011","url":null,"abstract":"Abstract. Shock chlorination is used for rapid disinfection to control pathogens and nuisance bacteria in domestic wells. A typical shock chlorination procedure involves adding sodium hypochlorite in liquid bleach solutions to achieve concentrations of free chlorine of up to 200 mg L−1 in the standing water of a well. The change in pH and oxidation potential may bring trace metals from aquifer materials into solution and chlorine may react with dissolved organic carbon to form disinfection byproducts. We carried out experiments with four wells to observe and determine the persistence of increased concentrations of metals and disinfection byproducts. Water samples from shock chlorinated wells were analyzed for Pb, Cu, As, radionuclides and disinfection byproducts (haloacetic acids and trihalomethanes), immediately prior to treatment, after sufficient treatment time with chlorine had elapsed, and at intervals determined by the number of casing volumes purged, for up to four times the well casing volume. Elevated concentrations of lead and copper dissipated in proportion to free chlorine (measured semi-quantitatively) during the purging process. Trihalomethanes and haloacetic acids were formed in wells during disinfection. In one of two wells tested, disinfection byproducts dissipated in proportion to free chlorine during purging. However, one well retained disinfection byproducts and free chlorine after 4 WV had been purged. Although metals returned to background concentrations in this well, disinfection byproducts remained elevated, though below the MCL. This may have been due to well construction characteristics and interactions with aquifer materials. Simple chlorine test strips may be a useful method for indicating when purging is adequate to remove metals and disinfection by-products mobilized and formed by shock chlorination.","PeriodicalId":53581,"journal":{"name":"Drinking Water Engineering and Science","volume":"4 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2010-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5194/DWES-4-1-2011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71219633","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: 11

I-WARP: Individual Water mAin Renewal Planner I-WARP:个人水管更新规划师

Drinking Water Engineering and Science Pub Date : 2010-05-18 DOI: 10.5194/DWES-3-71-2010

Y. Kleiner, B. Rajani

引用次数: 54