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 Abstract

  Sewer Sediment Control: Overview of an EPA Wet-Weather Flow Research Program (EPA/600/J-03/188) October 2003

This paper presents an overview of the sewer sediment control projects conducted by EPA's Wet-Weather Flow Research Program. Research presented includes studies both of the causes of sewer solids deposition and the development and evaluation of control methods that can prevent sewer-sediment accumulation.

Discussions focus on the abatement of solids deposition and solids re-suspension in sewers, sewer line flushing systems for removal of sewer sediment, and the relationship of wastewater characteristics to flow-carrying velocity. Methods for abating sewer sedimentation include steeper sewer slopeage, pipe bottom shapes that maintain high velocity during low-flow conditions, and periodic sewer flushing. Plans for future research on sewer-sediment control are also presented.

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Richard Field


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