Pollution Prevention and Control Technologies for Plating
Section 4 - Chemical Solution Maintenance
4.3.7 Residuals Generation
The application of microfiltration to degreaser/cleaner bath maintenance
is intended to reduce the quantity of waste that is treated on-site
and/or shipped off-site. The degreasing/cleaning bath is continuously
maintained by removing oil and other contaminants that normally
cause it to become spent. The tramp oil and other contaminants
removed by skimming, settling and filtration will require off-site
disposal. Depending on the volume of tramp oil generated, off-site
recycling of this residual is possible.
The Users Survey did not provide any data on process residuals.
In one case study, presented in the literature (see Section 4.3.3),
maintenance of a 250 gallon degreasing bath with an oil loading
of 100 g/hr generated approximately 300 gallons of 30 percent
emulsion waste per year (based on an 80 hour work week) (ref.
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