Record Display for the EPA National Library Catalog


Main Title Flocculation and clarification of mineral suspensions /
Author Iwasaki, Iwao,
Other Authors
Author Title of a Work
Lipp, Rodney J.,
Iwasaki, Iwao,
CORP Author University of Minnesota. Mineral Resources Research Center.
Publisher United States Environmental Protection Agency, Water Quality Office,
Year Published 1971
Report Number 14010DRB05/71; EPA-WQO-14010-DRB; 04098; EPA 140-R-71-005
Stock Number PB-206 238
OCLC Number 00160981
Subjects Water--Purification ; Flocculation
Additional Subjects ( Suspended sediments ; Clarification) ; ( Industrial waste treatment ; Flocculating) ; Flocculants ; Starches ; Calcium ; Quartz ; Iron hydroxides ; Polymers ; Performance evaluation ; Zeta potential ; Benefication ; Viscosity ; pH control ; Water pollution ; Polyacrylamides ; Water pollution control ; Goethite
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 140-R-71-005 c.1 Headquarters Library/Washington,DC 02/07/2014
ELBD ARCHIVE EPA 140-R-71-005 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 140-R-71-005 repository copy AWBERC Library/Cincinnati,OH 07/25/2018
NTIS  PB-206 238 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xviii, 108 pages : illustrations, figures, tables ; 28 cm
The clarification of plant effluents, particularly those from mineral processing operations, is becoming of much concern for the prevention of stream and lake pollution. The present study was undertaken in order to examine the mechanism of a combined use of a multivalent cation and a polymeric compound, to arrive at a most effective choice in their use as flocculants for the control of water pollution problems, and to establish the effect of size distribution on floc formation and clarification. For prototype solids, quartz and goethite of several different size distributions were chosen. At the same time they constitute the main components of the ore minerals of immediate interest for the iron ore industry of Minnesota. For flocculants, calcium ion and unmodified corn starch were used mainly because their use is well established. The investigation was later extended to include chemically modified starches and polyelectrolytes.
"May 1971." Includes bibliographical references (pages 105-108).