Record Display for the EPA National Library Catalog


Main Title Surge facility for wet and dry weather flow control /
Author Welborn, Harold L.,
CORP Author Rohnert Park, Calif.;National Environmental Research Center, Cincinnati, Ohio.;Y-T-O and Associates, Walnut Creek, Calif.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. G.P.O.
Year Published 1974
Report Number EPA-670/2-74-075; EPA-S800769; EPA-ROAP-21ASY-140
Stock Number PB-238 905
OCLC Number 01258920
Subjects Sewerage--California--Rohnert Park ; Settling basins--California--Rohnert Park ; Sewage disposal plants--Pilot plants--California--Rohnert Park ; Rohnert Park (Calif)--Sewerage
Additional Subjects Surge tanks ; Combined sewers ; Settling basins ; Flood control ; Flow measurement ; Storage tanks ; Flow control ; Sewage treatment ; Pumps ; Underflow ; Sludge ; Aerators ; Storm water ; Suspended sediments
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 670/2-74-075 Headquarters Library/Washington,DC 04/14/2006
ELBD ARCHIVE EPA 670/2-74-075 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 670-2-74-075 AWBERC Library/Cincinnati,OH 01/02/1998
NTIS  PB-238 905 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation viii, 86 pages : illustrations ; 27 cm.
The surge facility tested in this EPA Demonstration Project provided peak flow equalization and some degree of treatment to all storm flows and rate control of all wet and dry weather wastewater flows. The Rohnert facility was designed to test a method whereby solids could be prevented from accumulating on the bottom of an inexpensive earthen, lined basin without the use of conventional mechanical sludge collection equipment. The principal features of the surge facility were a 2,841 cubic meter (0.75 million gallon) Sedimentation-Equalization Basin, variable underflow pumps, a surface aerator and Pool Sweeps. The Pool Sweeps were used to continuously 'sweep' the bottom and sides of the earthen, lined basin to move and temporarily resuspend the settled sewage solids and, thereby, maintain the flow of solids in the absence of mechanical collection mechanism, steep bottom slopes, or a completely mixed basin. Under the storm flow conditions, the surge facility removed approximately 45% of the influent Suspended Solids and 90% of influent Settleable Solids prior to overflow to a storage pond.
"November 1974." "EPA/670-2-74-075." Prepared by Y-T-O & Associates, Walnut Creek, California, for City of Rohnert Park, California and the National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency under demonstration project Contract Number: S800769, program element 1BB034.