Accession Number : ADA221142

Title :   Full-Scale Implementation of the Sodium Sulfide/Ferrous Sulfate Treatment Process.

Descriptive Note : Final rept. Oct 87-Mar 89,

Corporate Author : EG AND G IDAHO INC IDAHO FALLS

Personal Author(s) : Beller, J. M. ; Carpenter, G. S. ; McAtee, R. E. ; Pryfogle, P. A. ; Suciu, D. F.

Report Date : SEP 1989

Pagination or Media Count : 176

Abstract : In Phase I, jar and dynamic testing showed that the sodium sulfide/ferrous sulfate process was a viable method for reducing hexavalent chromium and removing heavy metals from the Tinker AFB industrial wastewater with a significant decrease in sludge production and treatment costs. In Phase II pilot-plant field verification studies were conducted to evaluate the chemical and physical parameters of the chromium reduction process, the precipitation and clarification process, and the activated sludge system. Sludge production was evaluated and compared to the sulfuric acid/sulfur dioxide/lime process. The impact of and procedure for change-over to the sodium sulfide/ferrous sulfate process were also investigated. Metals treatment, Chromium reduction, Sulfide treatment, Metals removal, Industrial wastewater, Sludge reduction, Hazardous waste minimization. (jes)

Descriptors :   *ACTIVATED SLUDGE PROCESS, *WASTE WATER, CHEMICALS, CHROMIUM, COSTS, DYNAMIC TESTS, HAZARDOUS MATERIALS, HEAVY METALS, INDUSTRIES, METALS, PHYSICAL PROPERTIES, PRECIPITATION, PRODUCTION, REDUCTION, REMOVAL, SLUDGE, SULFIDES, VIABILITY, WASTES.

Subject Categories : Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE