Sewer-Sediment Control: Overview of an EPA Wet-Weather Flow (WWF) Research Program

This paper presents an historical overview of the sewer-sediment control projects conducted by the WWF Research Program of the U. S. Environmental Protection Agency (EPA). Research includes studies of the causes of sewer solids deposition and development/evaluation of control methods that can prevent sewer-sediment accumulation. Discussions focus on the relationship of wastewater characteristics to flow carrying velocity, abatement of solids deposition and solids resuspension in sewers, and sewerline-flushing systems for removal of sewer sediment.