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CHARACTERIZATION OF PRIORITY POLLUTANTS FROM AN AIRPLANE PARTS MANUFACTURING FACILITY
Citation:
Reed, A., M. Eischen, M. McKown, G. Smithson, AND Jr. CHARACTERIZATION OF PRIORITY POLLUTANTS FROM AN AIRPLANE PARTS MANUFACTURING FACILITY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-80/019.
Description:
Wastewater from an airplane parts manufacturing plant was sampled using the U.S. EPA screening protocol for the 129 priority pollutants. The wastewater treatment facilities at this site include batch systems to destroy cyanides, remove oil, and reduce hexavalent chromium to the trivalent state before it is discharged to a system where heavy metals are removed by pH adjustment and settling. The results of the study show that the treatment practiced at this site removes more than 90 percent of the chromium, zinc and 70 percent of the copper. The system is slightly less effective for cadmium because of its low concentration in the influent to the treatment plant. Nevertheless, in excess of 60 percent of the cadmium is removed. Because of the extremely low concentrations of other metals in the influent to the treatment plant, the effectiveness of the treatment for their removal could not be evaluated with any degree of confidence. Although the treatment system was not designed for the removal of the priority organic constituents, some are removed during the treatment. This could be due to evaporation or sorption on the solids formed during the precipitation of the metallic components of the wastewater.