Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of polymeric clarification of meat-packing and domestic wastewaters,
Author Larson, Keith D. ; Maulwurf., Douglas A.
Other Authors
Author Title of a Work
Maulwurf, Douglas A.
CORP Author Metropolitan Sewer Board, St. Paul, Minn.;Environmental Protection Agency, Washington, D.C.;Office of Water Resources Research, Washington, D.C.
Publisher For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1974
Report Number EPA-660/2-74-020; EPA-12130-EKK; W74-12210
Stock Number PB-235 900
OCLC Number 01117024
Subjects Animal waste. ; Meat industry and trade--Waste disposal. ; Sewage disposal plants. ; Sewage--Purification.
Additional Subjects Clarification ; Sewage treatment ; Industrial waste treatment ; Water pollution control ; Polymers ; Iron chlorides ; Polyelectrolytes ; Settling ; Suspended sediments ; Flocculating ; Biochemical oxygen demand ; Cost estimates ; Meat packing industry
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 660-2-74-020 Headquarters Library/Washington,DC 09/26/2013
EJBD  EPA 660-2-74-020 Headquarters Library/Washington,DC 01/07/2015
ERAD  EPA 660/2-74-020 Region 9 Library/San Francisco,CA 03/18/2013
NTIS  PB-235 900 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation xi, 197 pages illustrations 27 cm.
Laboratory tests were conducted to determine which system of chemicals would be most effective on combined packinghouse and domestic waste. A dual system of chemicals was found which was effective in the treatment of this combined waste. This was a combination of ferric chloride and an anionic polyelectrolyte. This system was effective in forming a floc which would settle out under the dynamic conditions of the overloaded primary sedimentation tank. Treatment with this system could effectively reduce suspended solids in the effluent of the primary sedimentation tank over what could be achieved without the use of this dual system. This was demonstrated by running: (1) a parallel system of identical tests and control tanks and, (2) full plant scale investigation for both test and control periods, kept as identical as possible. When full plant scale tests were run, laboratory data were collected from various sampling points throughout the plant during the test and control periods. A significant reduction of BOD and suspended solids was obtained in the primary sedimentation tanks and a change in efficiency was not observed on the trickling filters resulting in an overall reduction in these parameters in the effluent from the secondary sedimentation tank. The cost of chemically treating the combined 10 mgd of wastewater would be approximately $45 per million gallons and would be less for strictly domestic wastes.
"Project 12130 EKK; Program Element 1BB037." Includes bibliographical references.