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WASTE MINIMIZATION ASSESSMENT FOR A MANUFACTURER PRODUCING GALVANIZED STEEL PARTS
Citation:
Kirsch, F. AND J. Maginn. WASTE MINIMIZATION ASSESSMENT FOR A MANUFACTURER PRODUCING GALVANIZED STEEL PARTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/S-92/011 (NTIS PB92189695), 1992.
Description:
The U.S. Environmental Protection Agency (EPA) has funded a pilot project to assist small- and medium-size manufacturers who want to minimize their generation of hazardous waste but who lack the expertise to do so. aste Minimization Assessment Centers (WMACs) were established at selected universities and procedures were adapted from the EPA Waste Minimization Opportunity Assessment Manual (EPA/625/7-88/003, July 1988). he WMAC team at Colorado State University performed an assessment at a plant producing galvanized steel parts - approximately 10,000 tons/yr. he major process operations are degreasing and rinsing, acid pickling and rinsing, prefluxing, and galvanizing. ll these operations, except galvanizing, result in the formation of waste streams requiring off-site disposal. Bottom dross from the galvanizing kettle and zinc oxide skimmed from the surface of the molten zinc are sold as usable products. he team's report, detailing findings an recommendations, indicated that most waste was generated in acid pickling and rinsing and that the greatest savings could be obtained by continuous air agitation to extend the life of the pickling acid and rinse by enabling more complete removal of dissolved iron when those solutions are treated. his Research Brief was developed by the principal investigators and EPA's Risk Reduction Engineering Laboratory, Cincinnati, OH, to announce key findings of an ongoing research project that is fully documented in a separate report of the same title available from the authors.
