Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Chromate recovery from chromating rinsewater in the metal-finishing industry /
Author Gavaskar, Arun R. ; Olfenbuttel, R. F. ; Drescher, E. H.
Other Authors
Author Title of a Work
Olfenbuttel, Robert F.
Drescher, Eric H.
CORP Author Battelle, Columbus, OH.;Environmental Protection Agency, Cincinnati, OH. National Risk Management Research Lab.
Publisher U.S. Environmental Protection Agency, National Risk Management Research Laboratory,
Year Published 1995
Report Number EPA-68-CO-0003; EPA/600/R-95/087
Stock Number PB95-243044
Subjects Metals--Finishing--Environmental aspects. ; Chromium--Recycling--Connecticut.
Additional Subjects Materials recovery ; Chromates ; Metal finishing ; Water pollution control ; Waste water treatment ; Metal industry ; Evaporation ; Distillation ; Costs ; Zinc ; Iron ; Circulation
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB95-243044 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 42 pages : illustrations ; 28 cm
The recovery system evaluated in this study combines various aspects of vacuum evaporation and flash distillation. It provides a continuous supply of good quality rinsewater to the chromating line at QRD. Recirculation prevents nearly 450,000 gal of water from going to waste every year. Contaminants removed from the circulating water include chromium, zinc, and other dissolved solids. Contaminants are concentrated in a smaller wastestream (approximately 200 gal/yr) and disposed. Because ORD uses three different chromate formulations on a single chromating line, this concentrate could not be reused. At plants that use a single formulation, reuse may be possible, provided that the levels of zinc and iron do not increase to the point that chromating quality is affected.
Caption title. "July 1995." "EPA/600/R-95/087." Microfiche.