Urban Water最新文献_第2页

Contaminant flows in urban residential water systems 污染物在城市居民供水系统中的流动

Urban Water Pub Date : 2002-12-01 DOI: 10.1016/S1462-0758(02)00033-X

S.R. Gray, N.S.C. Becker

引用次数: 101

Real-time control in combined sewer systems in Germany––some case studies 德国联合下水道系统的实时控制——一些案例研究

Urban Water Pub Date : 2002-12-01 DOI: 10.1016/S1462-0758(02)00031-6

Michael Weyand

引用次数: 37

Faecal separation for nutrient management––evaluation of different separation techniques 用于营养管理的粪便分离——不同分离技术的评价

Urban Water Pub Date : 2002-12-01 DOI: 10.1016/S1462-0758(02)00026-2

B Vinnerås, H Jönsson

{"title":"Faecal separation for nutrient management––evaluation of different separation techniques","authors":"B Vinnerås, H Jönsson","doi":"10.1016/S1462-0758(02)00026-2","DOIUrl":"10.1016/S1462-0758(02)00026-2","url":null,"abstract":"<div>The aim of this study was to evaluate the potential of different separation techniques for local recovery of faecal nutrients. Separation by Aquatron, filtration, flotation and sedimentation was tested in the laboratory. Only the separation of faecal matter from flushwater was investigated. For efficient nutrient capture, the system has to be combined with urine-diverting toilets.In this study we found that the extraction of nutrients from the faeces to the liquid occurred rapidly. Therefore, to effectively separate the faecal nutrients and particles from the flushwater, the separation has to be performed locally, preferably at house level.The Aquatron and the filtration gave a fraction of separated solids with 10% dry matter, which contained 70–80% of the incoming plant nutrients nitrogen, phosphorus and potassium. The other two methods investigated did not prove effective for local separation of faeces.Using urine-diverting toilets, where all the urine is diverted, and collected and 70% of the faecal nutrients are separated locally, the potential for local nutrient recovery from the household wastewater is 88% for nitrogen, 75% for phosphorus and 55% for potassium, mainly in the form of directly plant available nutrients.</div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"4 4","pages":"Pages 321-329"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(02)00026-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87771657","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: 21

Machine learning in real-time control of water systems 水系统实时控制中的机器学习

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(02)00023-7

Arnold H. Lobbrecht , Dimitri P. Solomatine

引用次数: 25

Contaminant loads of CSOs at the wastewater treatment plant of a city in NW Spain 西班牙西北部某城市污水处理厂的公民社会组织污染物负荷

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(02)00020-1

F Diaz-Fierros T , J Puerta , J Suarez , F Diaz-Fierros V

{"title":"Contaminant loads of CSOs at the wastewater treatment plant of a city in NW Spain","authors":"F Diaz-Fierros T , J Puerta , J Suarez , F Diaz-Fierros V","doi":"10.1016/S1462-0758(02)00020-1","DOIUrl":"10.1016/S1462-0758(02)00020-1","url":null,"abstract":"<div>The city of Santiago de Compostela in north-west Spain (population about 100,000) has a combined sewer system that feeds to a grossly under-sized wastewater treatment plant. This problem is compounded by the very high rainfall (1600 mm per annum) and the age and poor repair of the sewer system (so that estimated groundwater input is about 13.4 Hm3 per annum). Combined sewer overflow (CSO) events are thus frequent, and have severe pollutant effects on the receiving watercourse, the River Sar. CSOs were monitored daily over a 40-month period, and determined the hydrographs and pollutographs for seven representative moderate-magnitude CSO events occurring during this period. Event total contaminant loads, often discharged to the river over a very short period, were in many cases very high: up to 9500 kg of suspended solids, 900 kg of total Kjeldahl N, and 3.62 kg of Zn. In most events, most contaminants showed a “first flush”, though variability was high and in many cases the pollutograph did not meet the stricter of the various criteria that have been proposed for definition of the first flush. That these stricter criteria were not met may be attributable to the dilution effect of the large volumes of groundwater that are continually entering the system.</div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"4 3","pages":"Pages 291-299"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(02)00020-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83081253","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: 70

Urban wastewater treatment in stabilization ponds: occurrence and removal of pathogens 稳定池处理城市污水:病原菌的发生与去除

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(01)00071-1

O Amahmid, S Asmama, K Bouhoum

{"title":"Urban wastewater treatment in stabilization ponds: occurrence and removal of pathogens","authors":"O Amahmid, S Asmama, K Bouhoum","doi":"10.1016/S1462-0758(01)00071-1","DOIUrl":"10.1016/S1462-0758(01)00071-1","url":null,"abstract":"<div>Waste stabilization ponds are frequently considered as being effective for the removal of intestinal parasites while conventional wastewater treatment processes are not. Over a 24-month period, grab samples from a pilot stabilization pond system in Marrakech were analyzed for the presence of Giardia cysts and Ascaris eggs. Giardia was isolated with an average of 2.8×103 cysts/l, while Ascaris eggs were detected with a mean number of 1.7 eggs/l. The data also suggest seasonal differences in Giardia cyst and Ascaris egg concentrations in raw wastewater, recording high monthly mean numbers during dry period (Spring and Summer). At the outlet of the system, neither Giardia cysts nor Ascaris eggs were found in treated wastewater. Enumeration of Giardia cysts and Ascaris eggs in the sediment at the entrance of the system resulted in average numbers of 1.3×103 cysts/g and 29.6 eggs/g dry weight of sediment. These concentrations decreased towards the outlet of the ponds where the sediment was free of Giardia cysts and Ascaris eggs.</div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"4 3","pages":"Pages 255-262"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(01)00071-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91161856","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: 76

Characterization of stormwater toxicants from an urban watershed to freshwater and marine organisms 从城市流域到淡水和海洋生物的雨水毒物特征

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(02)00007-9

Kenneth Schiff , Steven Bay , Christopher Stransky

{"title":"Characterization of stormwater toxicants from an urban watershed to freshwater and marine organisms","authors":"Kenneth Schiff , Steven Bay , Christopher Stransky","doi":"10.1016/S1462-0758(02)00007-9","DOIUrl":"10.1016/S1462-0758(02)00007-9","url":null,"abstract":"<div>Stormwater samples were collected from Chollas Creek, a highly urbanized watershed in San Diego, California, that discharges directly to San Diego Bay and tested using one freshwater species (Ceriodaphnia, water flea) and two marine species (Strongylocentrotus purpuratus, purple sea urchin; and Mysidopsis bahia, mysid shrimp). No two species responded similarly after exposure to urban wet weather discharges. Strongylocentrotus was extremely sensitive to stormwater, exhibiting responses during every storm at concentrations as low as 6–12% stormwater. In contrast, Mysidopsis, exhibited no response to stormwater for any of the storms sampled. Ceriodaphnia exhibited intermediate toxic responses; two of three samples were toxic at relatively high concentrations of 50–100% stormwater. Toxicity identification evaluations (TIEs) were conducted on each species to determine the toxic constituent(s). Organophosphate pesticides, most likely diazinon and chlorpyrifos, were responsible for the toxicity observed in Ceriodaphnia. Trace metals, most likely zinc and copper, were responsible for the toxicity observed to the sea urchin.</div>","PeriodicalId":101268,"journal":{"name":"Urban Water","volume":"4 3","pages":"Pages 215-227"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1462-0758(02)00007-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73390188","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: 48

Modelling the outflow from a porous pavement 模拟多孔路面的流出物

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(01)00065-6

Wolfram Schlüter, Chris Jefferies

引用次数: 85

Hydraulic reliability index for sewage pumping stations 污水泵站水力可靠性指标

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(01)00069-3

Yuri A Ermolin , Leonid I Zats , Takamitsu Kajisa

引用次数: 13

Effect of demand management and system operation on potable water infrastructure costs 需求管理和系统运行对饮用水基础设施成本的影响

Urban Water Pub Date : 2002-09-01 DOI: 10.1016/S1462-0758(02)00018-3

L.S Burn, D De Silva, R.J Shipton

引用次数: 28