Treatability Tests for Thermal Treatment and Chromium Recovery from Tannery Sludge.
Sczurko-JJ; George-LC; Paulson-SE; Meier-MP
Paper in Superfund '88 Hazardous Materials Control Research Institute 1988 :413-418
Bench-scale pyrolysis and incineration tests were performed on sludge from the saco tannery waste pits superfund site to assess the waste's nature when subjected to thermal treatment. Chemical analysis indicates the raw sludge contains chromium concentrations in excess of 10,000 mg/kg and a variety of organic constituents including dichlorobenzenes, xylenes, and phenols. The diverse mix of contaminants and significant levels of chromium in the 100,000 cu yd of sludge at the site supported treatability tests to assess the feasibility of chromium recovery. An extensive treatability study program conducted by the Bureau of Mines evaluated the technical aspects of applying metallurgical processes for sludge treatment and chromium recovery. Thermal treatment residues were subjected to leaching tests to analyze leachability and to help conceptualize a chromium recovery process. Waste characterization studies were also performed to provide information regarding waste structure and chromium phases. The research program is particularly important because of sara's emphasis on utilizing alternative treatment technologies and resource recovery methods to remediate hazardous waste sites.
Paper in Superfund '88; Hazardous Materials Control Research Institute, 1988, PP. 413-418