Method and Technologies for Reducing the Generation of Metal-Bearing Sludges at AFLC Industrial Waste Treatment Plants

摘要

At present, the Air Force provides maintenance for its inventory of aircraft and associated systems at five industrial-complexes called Air Logistic Centers (ALCs). Wastewaters generated at the ACLs are treated by industrial waste treatment plants located on-site. The effluent is then discharged to a nearby stream or to a Privately Owned Treatment Works (POTW). During the period, 16 July 1979 to 3 May 1980, these facilities were surveyed for ways to reduce the volume of metal-bearing sludges generated by the IWTPs. Results of the surveys showed that the volume of sludge could be significantly reduced by a coordinated program of wastewater reduction, plating chemicals conservation, optimization of IWTP operation and sludge dewatering. Analyses of the sludges showed them to be nonhazardous by the EPA Toxicant Extraction Method. Data suggested that efforts to delist the sludges as nonhazardous were warranted. Also included are in-depth discussions of evaporation, ion exchange, and reverse osmosis and their application as recovery processes in Air Force electroplating operations. (Author)