Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Full-scale raw wastewater flocculation with polymers /
Author Freese, Paul V.
Other Authors
Author Title of a Work
Freese, Paul V.
Hicks, Edward,
Publisher U.S. Government Printing Office,
Year Published 1972
Report Number EPA17050-EJB-11/70; W7212073; EPA/620-R-70-001
OCLC Number 00628207
Subjects Precipitation (Chemistry) ; Sewage--Purification--Flocculation.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 620-R-70-001 Headquarters Library/Washington,DC 05/08/2014
EJBD  EPA 620-R-70-001 Headquarters Library/Washington,DC 05/08/2014
EKAD  17050EJB11/70 Region 4 Library/Atlanta,GA 08/30/2002
EKAD  TD751.F74 Region 4 Library/Atlanta,GA 08/30/2002
ELBD  EPA 17050-EJB-11-70 AWBERC Library/Cincinnati,OH 11/04/2011
Collation vii, 49 pages : illustrations ; 28 cm.
"Report date November 1970." "EPA/620-R-70-001." Includes bibliographical references (page 49).
Contents Notes
High molecular-weight organic polyelectrolytes (polymers) have been used successfully to flocculate raw wastewater and to increase the removal of pollutants from the wastewater during primary sedimentation. At present, however, a satisfactory method for predicting the effectiveness of a particular polymer for flocculating solids in a specific wastewater is not available. Three polymers, Dow's anionic A-21 modified with cationic C-31, Hercules' cationic Reten 210, and Calgon's anionic ST 269 with a clay builder, were added to raw wastewater in 240 MGD tests of raw wastewater flocculation. The objectives of polymer flocculation of the raw wastewater were to increase solid capture in the primary tanks, reduce the BOD load to aeration, and permit recycle of the elutriate to the plant's influent. Polymer treatment of raw wastewater did not improve the solids capture in elutriation or permit continuous elutriate recycle.