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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/256

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Title: Factors influencing exfiltration processes in sewers
Authors: Blackwood, David J.
Ellis, J. B.
Revitt, D. M.
Gilmour, Daniel J.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Sewerage
Issue Date: 2005
Publisher: IWA Publishing
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)IWA Publishing, available from http://www.iwaponline.com/wst/05102/wst051020147.htm
Citation: Blackwood, D.J., et al. 2005. Factors influencing exfiltration processes in sewers. Water Science & Technology. 51(2): pp.147–154. [Online] Available from http://www.iwaponline.com/wst/05102/wst051020147.htm
Abstract: Exfiltration from sewers is widespread and emerging legislation may require water service providers to identify, and rectify, its sources in sewerage systems. This paper describes exfiltration test apparatus and a series of experiments undertaken using sewage to gain a better understanding of the influence of sewage solids and sediments on leakage rates. An overview of the results obtained is given, which demonstrates that most previous estimates of exfiltration leakage rates were too high due to a lack of appreciation of the "self-repairing" action of sewage and sewage associated solids. Exfiltration rates of 0.1% of the sewer flow or 0.001 l/s have been recorded for defects up to 6 mm wide.
URI: http://hdl.handle.net/10373/256
ISSN: 0273-1223
Appears in Collections:Science Engineering & Technology Collection

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