Method for processing chemical cleaning solvent waste
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United States of America Patent
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-
Jan 21, 1997
Issued Date -
N/A
app pub date -
Feb 15, 1996
filing date -
Aug 8, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for processing chemical cleaning solvent waste that combines evaporation, purification, and absorption. The method is mobile and thus allows the processing to be done at the site of the cleaning where the entire processing can be completed. Evaporation produces a concentrated solvent and vapor and gas. The concentrated solvent is absorbed to produce a dry residue for long term storage or disposal and a liquid that is filtered and then released to the surrounding environment. The vapor and gas are scrubbed and condensed to produce a gas that is suitable for release and a distillate. The distillate is purified by filtration and reverse osmosis to produce a distillate that is suitable for release.
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