||Biological Treatment of Cyanide Wastes.
Murphy, R. Sage ;
Nesbitt., John B. ;
||Pennsylvania State Univ., University Park. Coll. of Engineering
||Rept. No. ;Engineering Research B-88; FWPCA-WP-00151-04 ;
Biological industrial waste treatment ;
Industrial waste treatment ;
Waste processing plants ;
Solid waste disposal ;
Water analysis ;
Construction costs ;
Operating costs ;
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||Degradation of cyanide by the complete-mixing activated sludge process of biological waste treatment was investigated in a laboratory pilot plant to determine the feasibility and economy of this process for treating industrial cyanide wastes, and to obtain scientific and engineering data for the design of a prototype plant. Potassium cyanide was fed into the system, with ammonium acetate and a synthetic sewage as supplemental feeds. As a check on the possible influence of solids age, both sludge wasting (young cells) and extended aeration (old cells) were studied. Construction and operating costs for a full-scale complete-mixing activated sludge treatment plant were estimated to be about 50 percent of comparable costs for alkaline chlorination, the usual chemical treatment.
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||PC A05/MF A01