Citation:

Kirsch, F. AND J. Maginn. WASTE MINIMIZATION ASSESSMENT FOR A MANUFACTURER OF METAL-CUTTING WHEELS AND COMPONENTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/S-92/006 (NTIS PB92192145), 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) ere 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 the University of Tennessee performed an assessment at a plant manufacturing metal-cutting wheels and components -- approximately 6,000,000 units/yr. Tungsten carbide inserts or metal cutting are pressed, sintered, shaped by grinding, and ultrasonically cleaned. bout half are coated with titanium nitride by chemical vapor deposition. remolded ceramic inserts are ground to specifications and ultrasonically cleaned. teel disks for diamond-plated cutting wheels are machined, cleaned, treated with sulfuric acid, coated with a diamond abrasive compound in a nickel lattice (plated from a nickel sulfamate solution) and given a final electroless plating of nickel. luminum and aluminum-resin disks for diamond cutting wheels are machined to working specifications, a diamond abrasive compound is applied, and the wheels are machined to final specifications. he team's report, detailing findings and recommendations, Indicated that most waste, other than treated wastewater, consists of sludge filtered from machine coolant, and that the greatest savings could be obtained by recycling treated water from the plant's wastewater treatment facility to the gas/water separators of the chemical vapor deposition units. EPA/600/R-92/137

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