Waste-minimization assessment for a manufacturer producing galvanized-steel parts. Environmental research brief
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. Waste 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). The WMAC team at Colorado State University performed an assessment at a plant producing galvanized steel parts - approximately 10,000 tons/yr. The major process operations are degreasing and rinsing, acid pickling and rinsing, prefluxing, and galvanizing. All 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. The team's report, detailing findings and 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.
- Research Organization:
- University City Science Center, Philadelphia, PA (United States)
- OSTI ID:
- 5009982
- Report Number(s):
- PB-92-189695/XAB; CNN: EPA-R-814903
- Resource Relation:
- Other Information: Sponsored by Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
HAZARDOUS MATERIALS
WATER POLLUTION CONTROL
METAL INDUSTRY
WASTE MANAGEMENT
ZINC
RECYCLING
INDUSTRIAL WASTES
MANUFACTURING
MINIMIZATION
RECOMMENDATIONS
STEELS
ALLOYS
CONTROL
ELEMENTS
INDUSTRY
IRON ALLOYS
IRON BASE ALLOYS
MANAGEMENT
MATERIALS
METALS
POLLUTION CONTROL
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)