Record Display for the EPA National Library Catalog


Main Title Phosphate Removal by Activated Sludge Amenability Studies at Indianapolis, Indiana.
Author Myers, L. H. ; Horn, J. A. ; Lively, L. D. ; Witherow, J. L. ; Priesing, C. P. ;
CORP Author Robert S. Kerr Water Research Center, Federal Water Pollution Control Administration, U. S. Department of the Interior, Ada, OK.
Year Published 1968
Report Number EPA/000/R-68/007
Stock Number PB-226 381
Additional Subjects Chemical removal(Sewage treatment) ; Phosphorus ; Activated sludge process ; Pilot plants ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB-226 381 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 51 p.
Phosphate removal by activated sludge was investigated in pilot and plant scale research conducted at the Indianapolis, Indiana, Southwest Sewage Treatment Plant. These studies show that the aeration tanks were averaging 20 percent removal of the orthophosphate in the tank influent. Pilot investigations were made to determine the amenability of the waste and activated sludge to phosphate removal. Removal gradually increased with increasing oxygen demanding substrate or hardness concentration. Ferrous iron or aluminum salts removed high levels of orthophosphate, which agrees with previous studies. Following an acclimation period of 16 to 40 hours, orthophosphate removal increased to 78 percent which, excluding the chemical addition studies, was the maximum removal efficiency obtained. The waste and sludge were classified as moderately amenable to phosphate removal. (Modified author abstract)