Pilot Field Verification Studies of the Sodium Sulfide/Ferrous Sulfate Treatment Process
Abstract
In previous project, 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 significant decrease in sludge production and treatment costs. In this phase, 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 switchover to the sodium sulfide/ferrous sulfate process were also investigated. In addition, the effects of orthophosphate, ethylenediaminetetraacetic acid, cyanide, additional metals, flow rate, and temperature on chromium reduction, metal removal, and the activated sludge system were evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1988
- Accession Number
- ADA205950
Entities
People
- D. F. Suciu
- D. S. Prescott
- F. S. Loyd
- G. S. Carpenter
- P. A. Pryfogle
- P. L. Wichlacz
- P. M. Wiloff
- R. K. Schober
- T. L. Harris
- W. C. Schutte