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ONSITE SOLVENT RECOVERY
Citation:
Gavaskar, A., R. Olfenbuttel, AND J. Jones. ONSITE SOLVENT RECOVERY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-94/026 (NTIS PB94144508), 1994.
Description:
This study evaluated the product quality, waste reduction/pollution prevention, and economic aspects of three technologies for onsite solvent recovery: atmospheric batch distillation, vacuum heat-pump distillation, and a low-emission vapor degreaser with closed solvent, liquid and vapor recovery. ubstances recovered were methylene chloride, methyl ethyl ketone and perchloroethylene, respectively. he quality of the recovered solvent was found to be acceptable for use in the specific applications tested. ignificant spent solvent waste reductions were achieved for the first two units tested. or the sealed degreasing unit focus was on the reduction of air emissions. t was found to reduce solvent releases to the airs by more than 99%, compared to a conventional vapor degreaser of the same production capacity. he estimated payback period for the first two units was less than 2 years. he estimated payback for the degreaser unit was approximately 10 years.
