Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Removal of Impurities from Trickling Filter Effluents by Coagulation.
Author Keinat, Thomas M. ;
CORP Author Clemson Univ., S.C. Water Resources Research Inst.
Year Published 1972
Report Number WRRI-31; DI-14-01-0001-1861 ;DI-14-31-0001-3041; OWRR-A-012-SC; 13826,; A-012-SC(6)
Stock Number PB-212 006
Additional Subjects ( Sewage treatment ; Coagulation) ; ( Trickling filtration ; Coagulation) ; ( Industrial waste treatment ; Coagulation) ; Coagulants ; Iron inorganic compounds ; Aluminum inorganic compounds ; pH control ; Cost estimates ; Performance evaluation ; Design ; Suspended sediments ; Bacteria ; Nitrogen ; Phosphorus ; Chemical removal(Sewage treatment) ; Pilot plants ; Zeta potential ; Biological industrial waste treatment ; Secondary sewage treatment
Library Call Number Additional Info Location Last
NTIS  PB-212 006 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 69p
The results of the investigation demonstrated that chemical coagulation with salts of Fe(III) and Al(III) can complement and can substantially enhance the treatment efficiencies of existing wastewater treatment facilities. Effective removals of the hydrophilic organic colloids present in trickling filter effluents were achieved with the Fe(III) coagulant. Both laboratory and pilot-plant scale studies showed that consistent removals of COD of 70 to 90 percent could be obtained, despite variations in waste strength and composition. Bacterial cells were destabilized and removed from solution concurrent with coagulation of other colloidal matter. Approximately 89 percent of the viable bacteria initially present were removed at the optimum coagulant dose in the pilot studies. The continuous-flow studies showed removals of total nitrogen and total phosphate of 16 and 85 percent, respectively. Projected chemical costs are given.