Urban Water最新文献_第8页

Microbiology and Chemistry for Environmental Scientists and Engineers, 2nd edition; J.N. Lester, J.W. Birkett 《环境科学家和工程师微生物学与化学》，第2版；J.N.莱斯特，J.W.伯基特

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00028-0

N.J Horan

引用次数: 4

Uncertainty in measuring the event pollutant removal performance of online detention tanks with permanent outflow 永流出在线蓄水池事件污染物去除性能测量的不确定性

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00031-0

J.P. Bardin, S. Barraud, B. Chocat

{"title":"Uncertainty in measuring the event pollutant removal performance of online detention tanks with permanent outflow","authors":"J.P. Bardin, S. Barraud, B. Chocat","doi":"10.1016/S1462-0758(01)00031-0","DOIUrl":"10.1016/S1462-0758(01)00031-0","url":null,"abstract":"<div><p>Detention tanks are frequently used in today's urban stormwater management. It is a recognized fact that these structures are efficient in order to reduce the frequency of flooding. By settling suspended solids and specific particle pollutants, detention tanks also may contribute to reduce pollutant loads discharged into the receiving waters. However, some recent studies report the measured event removal performance of tanks functioning with permanent outflow (online) to be quite low and relatively variable from one site to another. Even if the studies do not refer to it, the measured performance is probably impaired by considerable uncertainty. The aim of this paper is to ascertain to which point uncertainty could explain the weakness and the variability of the measured performance. Initially, the theoretical formulation of relative uncertainty in the pollutant removal performance of any tank is given. Then, this relationship is applied to the case study of an online tank functioning with permanent outflow: the Vénissieux tank. Some original methods are presented in order to assess uncertainty components. Final results obtained show that absolute uncertainty in the measured performance is far from negligible (between 13% and 37% whilst removal rates range between 25% and 73%). In conclusion, a coherent plan of action is proposed that can be used on other sites to reduce uncertainty to a minimum. A critical look is also taken at the general problem of uncertainty assessment.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 1","pages":"Pages 91-106"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00031-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78590658","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: 7

Rainfall input requirements for hydrological calculations 水文计算的降雨输入要求

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00020-6

Guido Vaes, Patrick Willems, Jean Berlamont

{"title":"Rainfall input requirements for hydrological calculations","authors":"Guido Vaes, Patrick Willems, Jean Berlamont","doi":"10.1016/S1462-0758(01)00020-6","DOIUrl":"10.1016/S1462-0758(01)00020-6","url":null,"abstract":"<div><p>Rainfall is the most important input for many hydrological and hydraulic design calculations. Ideally, long historical rainfall series should be used and a statistical analysis should be performed on the hydraulic results afterwards. In combination with the detailed models that are commonly used nowadays, this leads to huge calculation times. This research was set up in order to verify which kind of simplifications can be made with respect to the rainfall input. One must find an optimum between accuracy of the modelling results and calculation effort. This optimum can be different for different applications. The different types of rainfall simplifications which are considered here are composite design storms, short selected rainfall series and modified single storm events. In many cases the optimum is more likely a simplified model in combination with continuous long term simulations. Well-calibrated (physically based) simplified models can reach almost the same accuracy as the corresponding detailed models within a fraction of the calculation time. Furthermore, these simplified models are very useful in order to select or compose the proper rainfall input for detailed modelling.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 1","pages":"Pages 107-112"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00020-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75483545","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: 43

Analysis of freshwater consumption patterns in the private residences of Kuwait 科威特私人住宅淡水消费模式分析

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00016-4

A Mukhopadhyay, A Akber, E Al-Awadi

引用次数: 37

Siedlungswasserwirtschafts, Willi Gujer; Springer, Berlin, Heidelberg, 1999, ISBN 3-540-65769-X, 410 pages, 200 figures 城市水资源管理，Willi Gujer；施普林格出版社，柏林，海德堡，1999年，ISBN 3-540-65769-X，410页，200幅

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00030-9

Peter Krebs

引用次数: 0

Cosmoss: conceptual simplified model for sewer system simulation Cosmoss:下水道系统仿真的概念简化模型

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00022-X

Paolo S Calabrò

引用次数: 21

Factors influencing the structural deterioration and collapse of rigid sewer pipes 影响刚性下水管道结构劣化和倒塌的因素

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00017-6

J.P Davies , B.A Clarke , J.T Whiter , R.J Cunningham

引用次数: 216

Production and transport of urban wet weather pollution in combined sewer systems: the “Marais” experimental urban catchment in Paris 城市潮湿天气污染在联合下水道系统中的产生和运输:巴黎“玛莱”实验性城市集水区

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00029-2

G. Chebbo, M.C. Gromaire, M. Ahyerre, S. Garnaud

{"title":"Production and transport of urban wet weather pollution in combined sewer systems: the “Marais” experimental urban catchment in Paris","authors":"G. Chebbo, M.C. Gromaire, M. Ahyerre, S. Garnaud","doi":"10.1016/S1462-0758(01)00029-2","DOIUrl":"10.1016/S1462-0758(01)00029-2","url":null,"abstract":"<div><p>An experimental catchment area<span> was set up in the centre of Paris (France) so as to follow up the quality of wet weather flows from the entry to the exit of a combined sewer network<span>. The distinctive characteristic of this site is its location in a town centre and the extent of the equipment used to monitor the water pollution over the whole length of its course through the catchment area. The results obtained show a change in quality between the runoff entering the sewer network and the combined storm water flow at the sewer's outlet, which cannot be explained only by the mixture with domestic wastewater. In particular, an increase was observed in the concentrations of suspended solids (SS), VSS, COD, BOD and Cu, in the proportion of pollutants linked to particles and in the characteristics of the particles. A calculation of the total masses going in and out of the sewer network during a rainfall event shows that the erosion of in-sewer pollution stocks is the main source of particles and of organic matter in wet weather flows, whereas heavy metals loads<span> originated from roof runoff, due to the corrosion of metallic roofs. Particles eroded from the sewer sediments during rain events were found to be quite different from the particles of type A deposits and organic biofilms. Nevertheless, they have mean organic and metallic loads that are of the same order of magnitude as the particles of the organic layer at water sediment interface. A change in the chemical form of heavy metals was noticed during the transport in the sewer and it is suspected that a fraction of the dissolved metals from the runoff is adsorbed on sewer sediments.</span></span></span></p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 1","pages":"Pages 3-15"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00029-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73390186","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: 97

Strategies towards sustainable wastewater management 可持续废水管理战略

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00018-8

Erik Kärrman

引用次数: 43

Residence time distribution of a model hydrodynamic vortex separator 模型水动力涡旋分离器停留时间分布

Urban Water Pub Date : 2001-03-01 DOI: 10.1016/S1462-0758(01)00015-2

R.M Alkhaddar , P.R Higgins , D.A Phipps , R.Y.G Andoh

{"title":"Residence time distribution of a model hydrodynamic vortex separator","authors":"R.M Alkhaddar , P.R Higgins , D.A Phipps , R.Y.G Andoh","doi":"10.1016/S1462-0758(01)00015-2","DOIUrl":"10.1016/S1462-0758(01)00015-2","url":null,"abstract":"<div><p>This study investigates the macromixing within a hydrodynamic vortex separator (HDVS). The device is a scale model of a prototype unit and is operated with zero baseflow. The device under investigation is typically used for the removal of settleable and colloidal solids. The macromixing is investigated by conducting tracer experiments from which the residence time distribution (RTD) is obtained and interpreted to characterise the mixing regime within the HDVS. The method of moments and non-linear regression are used to obtain various RTD functions and flow-model parameters to aid in the characterisation of the device's mixing regime and the degree of any non-ideal flow behaviour. The axial dispersion model (ADM) and tanks-in-series model (TISM) are used in this study. The RTD imperfectly approximates a plug-flow distribution but, the device has some amount of dispersion and is equal to approximately 2–3 perfectly stirred tanks in series. The ADM seems to give a closer representation of the experimental curves compared to the TISM. The sludge hopper appears to be acting as a stagnant zone.</p></div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"3 1","pages":"Pages 17-24"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00015-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76206703","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: 27