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CONTROL OF CHELATOR-BASED UPSETS IN SURFACE FINISHING SHOP WASTE WATER TREATMENT SYSTEMS
Ferguson*, T D., A. C. Chen, B. Monzyk, M. Patry, AND E. Barlor. CONTROL OF CHELATOR-BASED UPSETS IN SURFACE FINISHING SHOP WASTE WATER TREATMENT SYSTEMS. PLATING AND SURFACE FINISHING JOURNAL 88(11):54-59, (2001).
Actual surface finishing shop examples are used to illustrate the use of process chemistry understanding and analyses to identify immediate, interim and permanent response options for industrial waste water treatment plant (IWTP) upset problems caused by chelating agents. There is economic and environmental compliance value to achieving such control since it is difficult to eliminate these upsets and their associated costs in actual plant practice. Chelating agents are required for baths operating at a pH sufficiently high to cause metal hydroxide precipitation or which need to maintain low metal ion activities for proper plated metal morphology. A methodology is offered to identify recovery and prevention solutions to such problems, which uses readily available materials and procedures. Fifty-three such options are offered.
Record Details:Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
SUSTAINABLE TECHNOLOGY DIVISION
INDUSTRIAL MULTIMEDIA BRANCH