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The Waste Minimization Assessment Center at Colorado State Univ. performed an assessment at a plant that manufactures intermediates for pharmaceuticals and other chemicals. Waste streams generated in the greatest quantities are wa...
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The Waste Minimization Assessment Center at Colorado State Univ. performed an assessment at a plant that manufactures intermediates for pharmaceuticals and other chemicals. Waste streams generated in the greatest quantities are waste solvents that are reused onsite, incinerated as fuel in an onsite boiler, or shipped offsite for disposal. The greatest cost savings could be achieved by reusing additional amounts of methylene chloride in the plant. This research brief discusses the process, existing waste management practices, pollution prevention opportunities, and gives additional recommendations. Tables summarize current waste generation and recommended waste minimization opportunities.
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The Waste Minimization Assessment Center at Colorado State University performed an assessment at a plant that manufactures three varieties of pressure-sensitive tape. The team report indicated that waste natural rubber adhesive is...
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The Waste Minimization Assessment Center at Colorado State University performed an assessment at a plant that manufactures three varieties of pressure-sensitive tape. The team report indicated that waste natural rubber adhesive is shipped offsite for disposal in large quantities, and that singificant cost savings could be achieved by redesigning the adhesive applicator on the coater for natural rubber adhesive. This research brief discusses the manufacturing process, existing waste management practices, pollution prevention opportunities, and gives additional recommendations. Tables summarize current waste generation and recommended pollution prevention opportunity.
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The Waste Minimization Assessment Center at Colorado State University performed an assessment at a plant that refurbishes large industrial crankshafts. The team report indicated that the waste stream generated in the greatest quan...
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The Waste Minimization Assessment Center at Colorado State University performed an assessment at a plant that refurbishes large industrial crankshafts. The team report indicated that the waste stream generated in the greatest quantity is spent cutting fluid from the grinding of crankshafts and that significant cost savings could be achieved by implementing a formal cutting fluid management program. This research brief discusses the process, existing waste management practices, pollution prevention opportunities, and gives additional recommendations. Tables summarize current waste generation and recommended pollution prevention opportunities.
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The WMAC team at Colorado State University performed an assessment at a plant that produces custom-built cutting and welding equipment. Components are fabricated from steel and other raw materials that are cleaned, machined, welde...
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The WMAC team at Colorado State University performed an assessment at a plant that produces custom-built cutting and welding equipment. Components are fabricated from steel and other raw materials that are cleaned, machined, welded, and painted. Machines are then assembled, tested, and calibrated. The hazardous wastes generated by the plant include tramp oil, spent cutting fluid, spent lacquer thinner, and chromium-contaminated paint dust and filters. The team's report, detailing findings and recommendations, indicated that the plant could achieve the greatest dollar savings by replacing chromium-containing solvent-based paints with chromium-free water-based paints.
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The WMAC team at Colorado State University performed an assessment at a plant manufacturing finished metal components -- approximately 260,000 sq ft/yr. Customer-specified coatings and surface treatments are applied to prefabricat...
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The WMAC team at Colorado State University performed an assessment at a plant manufacturing finished metal components -- approximately 260,000 sq ft/yr. Customer-specified coatings and surface treatments are applied to prefabricated aluminum and stainless steel parts. Aluminum parts may be finished by hard-coat or soft-coat anodizing, and chromate conversion coating. Stainless steel parts are finished by surface passivation. Parts are also processed for surface inspection using a fluorescent dye and ultraviolet light. The team's report, detailing findings and recommendations, indicated that most waste was generated in the aluminum anodizing process, and that the greatest savings could be obtained by using hot deionized water instead of nickel acetate solution to seal pores in the aluminum oxide coating applied by anodizing.
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The WMAC team at Colorado State University performed an assessment at a plant manufacturing machined parts -- approximately 500,000 units/yr. The facility performs precision machine-shop work on a job shop basis. The process begin...
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The WMAC team at Colorado State University performed an assessment at a plant manufacturing machined parts -- approximately 500,000 units/yr. The facility performs precision machine-shop work on a job shop basis. The process begins with cutting the stock to size, machining and hand deburring the parts. Next, the parts are machine deburred in a large tumbler washed, degreased, shipped offsite for chromating, and returned, assembled, inspected packaged, and shipped. The team's report, detailing findings and recommendations indicated that the majority of waste was generated by the deburrer rinse but that the greatest savings could be obtained by replacing the cutting fluid concentrate, thereby eliminating the need for degreasing with 1,1,1-trichloroethane.
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摘要 :
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 waste but who lack the expertise to do so. In an effort to assist the...
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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 waste but who lack the expertise to do so. In an effort to assist these manufacturers 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 that manufactures precision sheet-metal components, primarily for electronics and medical equipment. Sheet metal is machined into desired components that are anodized or chromated if aluminum; degreased and painted if required; and assembled, inspected, packaged, and shipped. The team's report, detailing findings and recommendations, indicated that the plant could achieve significant cost savings and waste reduction by replacing its standard paint spray guns with high-volume low-pressure paint guns, thereby reducing paint overspray.
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