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Metal Finishing and Plating

Independent Plating - Trivalent Chromium Plating Conversion. 2012.

  Traditionally, metal finishing relies on the use of a number of toxic chemicals to achieve the performance requirements of its customers. Independent Plating recently converted a nickel plating line to accommodate a new technology that substitutes trivalent chromium for hexavalent chromium, a Higher Hazard Substance. This case study documents the company's decision-making process and the business case for making the change. Download PDF file (543.71 kB)

Columbia Manufacturing, Inc. - Plating Operation Achieves Zero Wastewater Discharge. OTA 2005.

  Columbia Manufacturing Inc. in Westfield, Massachusetts eliminated the use of 150,000 gallons of water per day in their plating operations. Columbia saved $80,000 in sewer fees, among other cost savings, by upgrading the plating equipment and integrating a zero discharge wastewater treatment system. The new, efficient plating line enables the company to recover and reuse 98% of the plating chemistry resulting in a drastic reduction of hazardous waste generation. Download PDF file (21.95 kB)

V.H. Blackinton & Co. - Halogen Solvent Elimination, Chemical Reduction and Zero Discharge. OTA 2003.

  In the early 1990's V.H. Blackinton began a continuous improvement program to reduce chemical use and eliminate certain hazardous chemicals. By engaging company employees and working with vendors, along with the help of the Office of Technical Assistance (OTA), V.H. Blackinton eliminated the use of ozone depleting Freon, trichloroethylene (TCE), ammonia, and volatile organic compounds (VOC). The company made substantial investments to modernize their plating and finishing operations, leading to significant reductions in water use and in the use of acids and bases in waste treatment and plating operations. As a result, V.H. Blackinton is no longer required to report under the Toxic Use Reduction Act (TURA) and have closed the loop on their wastewater discharge. Download PDF file (25.88 kB)