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Item Information   Holdings       More by this author     Kurzka, Kristin.     Subjects     Steel founding -- Hazardous wastes     Factory and trade waste -- Purification     MSEV Project.     Browse Catalog     by author:      Kurzka, Kristin.       by title:      Hazardous waste mini...         MARC Display

Hazardous waste minimization for investment casting cleaning using the KoleneTM system / by Kristin Kurzka. by Kurzka, Kristin. Subjects Steel founding -- Hazardous wastes   Factory and trade waste -- Purification   MSEV Project. Description:  109 leaves : ill. ; 28 cm. Contents:  Advisor: Dr. Carol Diggelman Committee members: Dr. Francis Mahuta, Kenneth Kaszubowski Introduction -- Investment casting -- Current cleaning process -- Alternate cleaning process-water jet cleaning -- Hazardous sludge treatment alternative-metal precipitation -- Hazardous sludge treatment alternative-proprietary process -- Discussion -- Design -- Recommendations -- Appendix A) 1997 Facility information B) KoleneTM sludge TCLP characterization C) KoleneTM sludge calculations D) KoleneTM sludge laboratory report E) KoleneTM system cost analysis F) Water jet system quote / equipment list G) Water jet system mass balance calulations H) Solid waste disposal protocol NON-2 I) Water jet system cost analysis J) pH curve K) Metal precipitation mass balance calculations L) Metal precipitation cost analysis M) Proprietary process mass balance calculations N) Wisconsin Department of Natural Resources letter O) Proprietary process cost analysis P) Proprietary process design calculations. A Milwaukee investment casting facility generates hazardous waste sludge through operation of their KoleneTM investment casting cleaning system. The hazardous sludge generated consists of silicates, caustic soda and heavy metals including hexavalent chromium leached from the stainless steel parts by molten caustic soda during the cleaning process. The production, handling the disposal of the hazardous waste presents health and safety issues and economic risks to the facility. In an effort to reduce the risks associated with the current casting cleaning process (i.e. the generation of hazardous waste), a feasibiltiy study has been completed to identify an alternative hazardous sludge treatment processes that have potential for pollution prevention and risk reduction. The alternatives considered are: 1) Water jet casting cleaning technology, 2) Traditional metal precipitation wastewater pre-treatment of the hazardous sludge; and 3) A proprietary sludge treatment process. The evaluation of the applicability and performance of these three selected alteratives was based on teh production and performance fo the current cleaning process. Specifically, each of these alternatives was evaluated and compared based on performance related to: technical feasibility, product quality, changes in reglulatory status or facility processes, changes in employee health and safety, economic viability, chagnes in company operations and the potential for pollution prevention, waste minimization and / or energy reduction. A relatively detailed evaluation fo teh proprietary sludge treatment process indicates that this alternative can effectively eliminate teh generation of hazardous waste and teh assiciated regulatory requirements, while not affecting product quality, or facility operations. The economic evaluation indicates that through completetion fo recommended supplemental pilot and bench scale testing of the process this alternative may prove to be competitive with the existing waste disposal system. However, thsi alternative may not improve employee health or safety.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .K87 1998 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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