Record Display for the EPA National Library Catalog


Main Title Sewer sediment and control a management practices reference guide / {electronic resource} :
Author C. Y. FAN ; Fan, Chi-Yuan.
CORP Author National Risk Management Research Lab., Edison, NJ. Water Supply and Water Resources Div.
Publisher United States Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division, Urban Watershed Management Branch,
Year Published 2004
Report Number EPA/600/R-04/059
Stock Number PB2008-110416
Subjects Sewage sludge precipitants--Government policy--United States--Handbooks, manuals, etc
Additional Subjects Combined sewers ; Sediment transport ; Pollution sources ; Urban runoff ; Overflows ; Waste water ; Water pollution abatement ; Rainfall ; Flow rate ; Storm sewers ; Water quality ; Sulfates ; Pollution prevention ; Case studies
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2008-110416 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 v (various pagings) : digital, PDF file.
Sewer sediment is one of major sources of pollutants in urban wet-weather flow (WWF) discharges that include combined-sewer overflow (CSO), separate sanitary-sewer overflow (SSO), and stormwater runoff. During low-flow, dry-weather periods, sanitary wastewater solids deposited in combined sewers have significant adverse impacts on the integrity of the sewerage system and receiving-water quality. In the US, estimates of dry-weather flow deposition in combined sewers vary from 5 to 30% of the daily inputs of solids and pollutants. In Europe, average deposition rates have been measured at between 30 and 500 g/m/d. Even sewers that are supposedly designed to be self-cleansing will have transient sediment deposits and part of the load in transport will move near the sewer invert. Deposited organic matter contains high concentrations of sulfates that can be reduced to hydrogen sulfide (H2S) under anoxic conditions often reached in a sewer. The H2S is then oxidized to sulfuric acid, a highly toxic and corrosive gas, by biochemical transformation. The concentration of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and ammonia (NH-3N) in sewer sediments can be as high as 150,000 mg/L, 200,000 mg/L, and 300 mg/L, respectively. During a storm event, resuspended sediments are discharged directly into receiving waters. This report covers sources of sewer solids, sewer solids loading, sewer sediment and associated pollutants and their impacts, sewer cleaning, and in-sewer sediment control. For in-sewer sediment control, the report presents a number of in-sewer flushing systems with case studies.
Title from title screen (viewed on Mar. 23, 2006). "January 2004." "EPA 600/R-04/059." Includes bibliographical references.