Chapter 9. Wastewater Treatment Improvements at an Inorganic Pigment/Glass Enamel Manufacturing Facility

  1. John B. Wachtman Jr.
  1. Ryne G. Stefanacci

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313916.ch9

Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 13, Issue 1/2

Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 13, Issue 1/2

How to Cite

Stefanacci, R. G. (1994) Wastewater Treatment Improvements at an Inorganic Pigment/Glass Enamel Manufacturing Facility, in Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 13, Issue 1/2 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313916.ch9

Author Information

  1. Drakenfeld Colors Washington, PA 15301

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375129

Online ISBN: 9780470313916

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Keywords:

  • regulutory framework;
  • noncategorical;
  • wastewater discharges;
  • inorganic pigment/glass;
  • antimony and cadmium

Summary

The regulatory framework for noncategorical, industrial wastewater discharges to a publicly owned treatment works (POTW) has changed dramatically in the past five years. The efforts of one inorganic pigment/glass enamel manufacturer to negotiate a mutually acceptable set of pretreatment discharge limits are reviewed. The impact of “pass through” and “interference” definitions are discussed. Precipitation, clarification, and filtration units were upgraded. Waste minimization efforts yielded a 40% reduction in process wastewater. As a result, heavy metal concentrations in the discharge were decimated. Lead concentrations were reduced 93%; zinc, 97%; barium, 90%; antimony and cadmium, 94%; and nickel, 99%.