Record Display for the EPA National Library Catalog


Main Title Small diameter gravity sewers : an alternative for unsewered communities /
Author Otis, Richard J.
CORP Author Urban Systems Research and Engineering, Inc., Cambridge, MA. ;RSE Group, Madison, WI.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Publisher U.S. Environmental Protection Agency, Water Engineering Research Laboratory,
Year Published 1986
Report Number EPA/600/2-86/022; EPA-68-03-3057
Stock Number PB86-167335
Subjects Sewage--Environmental aspects ; Sewage disposal, Rural--Environmental aspects
Additional Subjects Gravity concentrators ; Sewers ; Solids ; Dense media separators ; Greases ; Design criteria ; Hydraulics ; Field tests ; Operations ; Cost effectiveness ; Construction ; Comparison ; Combined sewers ; Waste water ; Graphs(Charts) ; Wisconsin ; Alternative planning ; Madison(Wisconsin)
Library Call Number Additional Info Location Last
NTIS  PB86-167335 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 126 pages : illustrations ; 28 cm
The most recently introduced wastewater collection alternative for small unsewered communities is septic tank effluent drains or small diameter gravity sewers (SDGS). Unlike conventional sewers, SDGS only collect settled wastewater. Grit, grease and other troublesome solids which might cause obstructions in the collectors are separated from the flow in interceptor tanks upstream of each connection. Therefore, the hydraulic design of SDGS need not based on water carriage of solids. This may allow significant cost savings in construction. A three year laboratory and field study was undertaken to evaluate SDGS as a wastewater collection alternative to conventional sewers. The objective of the study was to develop design criteria which would minimize costs of construction while maintaining reliable, trouble-free operation.
"Feb 1986." "EPA/600/2-86/022." Microfiche.