Chapter 9. Wastewater Treatment Improvements at an Inorganic Pigment/Glass Enamel Manufacturing Facility
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramic Society
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
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375129
Online ISBN: 9780470313916
- regulutory framework;
- wastewater discharges;
- inorganic pigment/glass;
- antimony and cadmium
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%.