发布求助
文献互助 智能选刊 最新文献

Urban Water最新文献

筛选
英文 中文
A survey of sewer rehabilitation in Malaysia: application of trenchless technologies 马来西亚下水道修复调查:非开挖技术的应用
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00047-4
B Sen Gupta, S Chandrasekaran, S Ibrahim
{"title":"A survey of sewer rehabilitation in Malaysia: application of trenchless technologies","authors":"B Sen Gupta,&nbsp;S Chandrasekaran,&nbsp;S Ibrahim","doi":"10.1016/S1462-0758(01)00047-4","DOIUrl":"10.1016/S1462-0758(01)00047-4","url":null,"abstract":"<div><p>This work presents a review of applicable sewer rehabilitation options using trenchless technology in Malaysia. The typical problems faced in wastewater collection systems are analysed and factors that determine the selection method are outlined. This study also highlights the necessary steps to be taken prior to the rehabilitation work. The trenchless technology reviewed here comprises repair, renovation and replacement options. The cost-effectiveness of different rehabilitation methods was identified to assess the economic viability of various options in the Malaysian context. This study reveals that not all the trenchless technologies available in the market are suitable for use in Malaysia, mainly due to incompatibility of the rehabilitation materials used. Furthermore, as trenchless rehabilitation generally involves higher capital outlay than open-cut methods, the choice of rehabilitation method has to be made on a case-to-case basis.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 309-315"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00047-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83602200","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: 14
Estimation of raw sewage discharge resulting from sewer network failures 污水管网故障导致的原始污水排放估算
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00034-6
Yuri A. Ermolin
{"title":"Estimation of raw sewage discharge resulting from sewer network failures","authors":"Yuri A. Ermolin","doi":"10.1016/S1462-0758(01)00034-6","DOIUrl":"10.1016/S1462-0758(01)00034-6","url":null,"abstract":"<div><p>The raw sewage volume potentially discharged from a sewer network to the environment arising from its component failures is proposed as a measure of overall system reliability. This paper presents a simple method for quickly and properly calculating this volume. The basis for this method is a representation of the sewer network by a combination of Y-like fragments named here as structure-forming elements. Each such element is formally substituted by a fictitious equivalent sewer with a failure rate leading to the same output for the same input. A sequential application of this approach reduces the problem of estimating the discharged sewage volume to elementary subproblems for which the solution is simple. Examples are used to demonstrate the possibilities of this method.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 271-276"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00034-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72418649","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
Airborne remote sensing for urban drainage 城市排水的航空遥感
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00038-3
John Elgy
{"title":"Airborne remote sensing for urban drainage","authors":"John Elgy","doi":"10.1016/S1462-0758(01)00038-3","DOIUrl":"10.1016/S1462-0758(01)00038-3","url":null,"abstract":"<div><p>Land cover information suitable for urban drainage modelling is acquired by airborne remote sensing<span>. The scanner used is a line scanner that scans continuously while the aircraft flies forward recording 11 bands of the electromagnetic spectrum. This is classified by first segmenting the image into approximately homogeneous polygons using a Marr–Hidreth edge detector. These polygons are then classified into roofs, paved areas and permeable land. Rigorous accuracy tests are applied to the classified imagery, which shows that this method gives better results than any of those currently used. Dawn thermal imagery was not used in this study.</span></p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 287-297"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00038-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84079494","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
Reliability analysis of regional water distribution systems 区域配水系统可靠性分析
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00035-8
Avi Ostfeld
{"title":"Reliability analysis of regional water distribution systems","authors":"Avi Ostfeld","doi":"10.1016/S1462-0758(01)00035-8","DOIUrl":"10.1016/S1462-0758(01)00035-8","url":null,"abstract":"<div><p>Reliability analysis of water distribution systems is a complex task. A review of the literature reveals that there is currently no universally acceptable definition or measure for the reliability of water distribution systems as it requires both the quantification of reliability measures and criteria that are meaningful and appropriate, while still computationally feasible. This paper focuses on a tailor-made reliability methodology for the reliability assessment of regional water distribution systems in general, and its application to the regional water supply system of Nazareth, in particular. The methodology is comprised of two interconnected stages: (1) analysis of the storage–conveyance properties of the system, and (2) implementation of stochastic simulation through use of the US Air Force Rapid Availability Prototyping for Testing Operational Readiness (RAPTOR) software.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 253-260"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00035-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78119237","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: 53
The structural condition of rigid sewer pipes: a statistical investigation 刚性下水管道结构状况的统计调查
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00036-X
J.P. Davies , B.A. Clarke , J.T. Whiter , R.J. Cunningham , A. Leidi
{"title":"The structural condition of rigid sewer pipes: a statistical investigation","authors":"J.P. Davies ,&nbsp;B.A. Clarke ,&nbsp;J.T. Whiter ,&nbsp;R.J. Cunningham ,&nbsp;A. Leidi","doi":"10.1016/S1462-0758(01)00036-X","DOIUrl":"10.1016/S1462-0758(01)00036-X","url":null,"abstract":"<div><p>This paper describes a statistical analysis of the structural condition of rigid sewer pipes. The aim of the study was to identify the factors that have most influence on a sewer's structural condition. A statistical investigation, in the form of a logistic regression analysis, was performed on an extensive data set that combined a number of previously disparate data sources. The study would suggest that there are a large number of variables which are significant in assessing the risk of a sewer collapsing or deteriorating to such an extent that collapse is likely. The analysis described contributes significantly to the small amount of work of this nature previously completed.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 277-286"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00036-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76665160","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: 78
Nitrogen transformation and microbial biomass content in soil contaminated with nickel and cadmium from industrial wastewater irrigation 工业废水灌溉中镍镉污染土壤氮素转化及微生物生物量
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00048-6
R.S Antil, A.P Gupta, R.P Narwal
{"title":"Nitrogen transformation and microbial biomass content in soil contaminated with nickel and cadmium from industrial wastewater irrigation","authors":"R.S Antil,&nbsp;A.P Gupta,&nbsp;R.P Narwal","doi":"10.1016/S1462-0758(01)00048-6","DOIUrl":"10.1016/S1462-0758(01)00048-6","url":null,"abstract":"<div><p><span>During a survey of the contamination of soils receiving sewer water/industrial wastewaters, we identified two sites, one with limited plant growth and containing 2290 mg Ni and 40 mg Cd kg</span><sup>−1</sup> (contaminated soil) and another with good plant growth and containing 26 mg Ni and 2 mg Cd kg<sup>−1</sup> soil (uncontaminated soil). Various Ni levels ranging from 26 to 2290 mg kg<sup>−1</sup><span> were created by mixing contaminated and uncontaminated soils in different proportions to study the influence of Ni content of soil on microbial biomass, urea hydrolysis and nitrogen transformations. Soil microbial biomass decreased with increasing levels of Ni and Cd in soil. Urea hydrolysis was faster in uncontaminated soil (65% within 12 h in soil containing 26 mg Ni </span><span><math><mspace></mspace><mtext>kg</mtext><msup><mi></mi><mn>−1</mn></msup></math></span>) compared to contaminated ones (41% within 12 h in soil containing 2290 mg Ni kg<sup>−1</sup>). The values of first-order rate constant for urea hydrolysis (<em>k</em>) were higher in uncontaminated soil as compared to Ni contaminated soil. The NH<sub>4</sub><sup>+</sup>–N content increased up to 14 days of incubation in soil containing Ni &gt;1230 <span><math><mspace></mspace><mtext>mg</mtext><mspace></mspace><mtext>kg</mtext><msup><mi></mi><mn>−1</mn></msup></math></span> and decreased thereafter, however, in other soils it decreased with increasing incubation period. The NO<sub>3</sub><sup>−</sup>–N content increased with increasing incubation period irrespective of the Ni content of the soil. These results indicate that soils containing excessive concentration of toxic metals (Ni, Cd) may decrease the microbial biomass and also lead to leaching losses of urea owing to delayed hydrolysis.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 299-302"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00048-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85521512","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: 13
Mathematical modeling of sewers under surcharge for real time control of combined sewer overflows 污水附加费下合流溢流实时控制的数学建模
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00037-1
Sophie Duchesne, Alain Mailhot, Emeric Dequidt, Jean-Pierre Villeneuve
{"title":"Mathematical modeling of sewers under surcharge for real time control of combined sewer overflows","authors":"Sophie Duchesne,&nbsp;Alain Mailhot,&nbsp;Emeric Dequidt,&nbsp;Jean-Pierre Villeneuve","doi":"10.1016/S1462-0758(01)00037-1","DOIUrl":"10.1016/S1462-0758(01)00037-1","url":null,"abstract":"<div><p>The efficiency of real time control (RTC) to decrease storm overflows from combined sewers to receiving waters was demonstrated in several case studies. Global predictive control (GPC), an effective strategy to perform real time management of sewers, requires simulation models to anticipate the future state of the system (flow rates and water levels). To compute these predictions, a hydraulic model using an implicit discretization scheme to solve simplified continuity and momentum equations was developed. The performance of the model is evaluated by comparison with the USEPA EXTRAN model results. This comparison shows that the model gives results similar to those of the EXTRAN model, with the advantage of producing faster and more stable results regardless of space and time steps used. Additional validation with the SUPERLINK model is also presented.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Pages 241-252"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00037-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83440547","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: 64
Index title page 索引标题页
Urban Water Pub Date : 2001-12-01 DOI: 10.1016/S1462-0758(01)00057-7
{"title":"Index title page","authors":"","doi":"10.1016/S1462-0758(01)00057-7","DOIUrl":"https://doi.org/10.1016/S1462-0758(01)00057-7","url":null,"abstract":"","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 4","pages":"Page I"},"PeriodicalIF":0.0,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00057-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136974691","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
Overview of EPA's wet-weather flow research program EPA湿天气气流研究项目概述
Urban Water Pub Date : 2001-09-01 DOI: 10.1016/S1462-0758(01)00041-3
P.E. Richard Field, P.E. Daniel Sullivan
{"title":"Overview of EPA's wet-weather flow research program","authors":"P.E. Richard Field,&nbsp;P.E. Daniel Sullivan","doi":"10.1016/S1462-0758(01)00041-3","DOIUrl":"10.1016/S1462-0758(01)00041-3","url":null,"abstract":"<div><p>This paper presents an overview of the US Environmental Protection Agency's (EPA's) wet-weather flow (WWF) research program. Research priorities for 2001 are presented. In 1996, EPA issued the “Risk Management Research Plan for Wet Weather Flows”, a plan that presents specific WWF problems and anticipated research approaches to solve them. Within each area, the state-of-the-art knowledge is presented and the unknowns cited; research questions to address the unknown are also posed. In the time since November 1996, other organizations, notably the Water Environment Research Foundation (WERF), have reviewed WWF research programs and developed associated research needs reports.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 3","pages":"Pages 165-169"},"PeriodicalIF":0.0,"publicationDate":"2001-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00041-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79771145","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: 9
Application of geophysical methods to evaluate hydrology and soil properties in urban areas 应用地球物理方法评价城市地区的水文和土壤性质
Urban Water Pub Date : 2001-09-01 DOI: 10.1016/S1462-0758(01)00042-5
Larisa Pozdnyakova , Anatoly Pozdnyakov , Renduo Zhang
{"title":"Application of geophysical methods to evaluate hydrology and soil properties in urban areas","authors":"Larisa Pozdnyakova ,&nbsp;Anatoly Pozdnyakov ,&nbsp;Renduo Zhang","doi":"10.1016/S1462-0758(01)00042-5","DOIUrl":"10.1016/S1462-0758(01)00042-5","url":null,"abstract":"<div><p><span>Municipal activities continuously change soil properties and hydrology yet direct destructive sampling to monitor these changes is troublesome in urban areas. Electrical geophysical methods<span> provide the means to investigate hydrological conditions and subsurface properties without soil disturbance. Methods of self-potential, electrical profiling, vertical electrical sounding, and non-contacting electromagnetic profiling were applied to urban soils in Astrakhan', Russia, and Kiev, Ukraine. Depth to the groundwater table, </span></span>salinity of soils and groundwater, and soil profile organization were estimated with the methods. The methods ensure quick yet non-destructive estimation of soil and hydrological conditions in cities assisting with successful restoration and preservation of municipal constructions.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 3","pages":"Pages 205-216"},"PeriodicalIF":0.0,"publicationDate":"2001-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00042-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84044485","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: 65
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信