Record Display for the EPA National Library Catalog


Main Title Polymers for sewer flow control; the development and demonstration of the use of polymers to reduce or eliminate sewer overflows by flow energy reduction.
CORP Author Western Company.
Publisher Federal Water Pollution Control Administration,
Year Published 1969
Report Number WP 20-22; EPA-950/R-69-031; DI-14-12-34; 10256
Stock Number PB-185 951
OCLC Number 00481189
Subjects Sewerage ; Frictional resistance (Hydrodynamics) ; Polymers ; Sewage disposal plants ; Friction resistance (Hydrodynamics)
Additional Subjects ( Water pollution ; Processing) ; ( Pipes ; Fluid flow) ; ( Sewage ; Coagulation) ; Friction ; Drag ; Polymers ; Epoxy plastics ; Alumina ; Cost effectiveness ; Water treatment ; Sewage treatment ; Sewer pipes ; Drag reducing polymers
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 950-R-69-031 c.1 Headquarters Library/Washington,DC 01/31/2014
ELBD ARCHIVE EPA 950-R-69-031 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 11020-DIG-08-69 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
EMAM  WPCRS/WP 20-20 Region 6 Library/Dallas,TX 02/10/2020
NTIS  PB-185 951 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 180 pages illustrations 28 cm.
Six water-soluble polymers were investigated to determine their effects upon aquatic flora and fauna, flow characteristics of watewater, and the operation of a wastewater treatment plant. It was found that the polymers and gels, in the magnitudes tested, were not toxic to bacteria, algae, or fish, and did not act as a nutrient for algae growth. Based upon calculations obtained from flow test data, a maximum flow increase of 2.4 times the flow prior to injection could be obtained is a constant head was maintained. Laboratory flow test data indicated that if flow rates were held almost constant prior to and during polymer injection, a reduction in the static head occurred as a result of friction reduction within the fluid. The most effective polymers in providing energy reduction were Polyox Coagulant-701, WSR-301, and AP-30; however, AP-30 required higher polymer concentrations to obtain equivalent flow characteristics. In field tests on a 24-inch diameter line, it was found that polymer concentrations of between 35 and 100 mg/l, decreased frictional flow resistance sufficiently to eliminate surcharges of more than six feet. Based upon an economic analysis, the average annual cost of new construction was approximately five times the cost of using polymers during peak storm-flow periods. (Author)
"Contract no. 14-12-34." Includes bibliographical references.