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Description: Book cover
A New Approach to CSO Control: A Unique Device for Preventing Sludge Accumulation in Inverted Siphons
Abstract
In combined sewer systems, when there is an increase in flow volume due to wet weather, the accumulated sludge in the inverted siphons is easily flushed out and discharged by the CSO into the rivers together with untreated sewerage, which leads to deterioration of public water bodies. Thus, we have worked out a device for preventing sludge accumulation in inverted siphons at any time. Characteristically, this device can drain the accumulated sludge with waste water by the power of a hydraulic head instead of a pump or the like. The best results from our monitoring studies show that setting this device in an inverted siphon reduces the BOD and SS concentration in the suspension layer to 1/40, and the accumulation of sludge to 1/4.
In combined sewer systems, when there is an increase in flow volume due to wet weather, the accumulated sludge in the inverted siphons is easily flushed out and discharged by the CSO into the rivers together with untreated sewerage, which leads to deterioration of public water bodies. Thus, we have worked out a device for preventing sludge accumulation in inverted siphons at any time....
Author(s)
Keisuke NakanishiTetsuya HamadaMasao Inoue
SourceProceedings of the Water Environment Federation
SubjectSession 64: Exploring Collection System Wet Weather Issues
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Jan, 2011
ISSN1938-6478
SICI1938-6478(20110101)2011:12L.4098;1-
DOI10.2175/193864711802764995
Volume / Issue2011 / 12
Content sourceWEFTEC
First / last page(s)4098 - 4111
Copyright2011
Word count140
Subject keywordsCombined sewer overflow (CSO)inverted siphonsludge density

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