Record Display for the EPA National Library Catalog


Main Title Phosphate Removal by Activated Sludge: Amenability Studies at Mansfield, Ohio.
Author Scalf, M. R. ; DePrater, B. L. ; Pfeffer, F. M. ; Lively, L. D. ; Witherow, J. L. ; Priesing, C. P. ;
CORP Author Robert S. Kerr Water Research Center, Ada, Okla.
Year Published 1968
Report Number EPA/000/R-68/006
Stock Number PB-226 380
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-226 380 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 47 p.
Biological phosphate removal was investigated in pilot and plant scale at Mansfield, Ohio, to determine waste and sludge amenability and the suitability of the activated sludge plant for a full-scale research or demonstration project. Pilot studies on the effect of MLSS, BOD, phosphate, and hardness concentrations showed only BOD exerted a significant change in phosphate removal. The addition of iron or aluminum salts effectively precipitated the phosphate. Amenability was established following sludge acclimatization when high levels of phosphate were removed from the primary effluent supplemented with a BOD material. Plant studies prior to and following manipulation of the operating conditions did not reveal phosphate removal. The plant is not suitable for full-scale research or demonstration studies without design modifications. (Author)