Method for processing chemical cleaning solvent waste

Details Method for processing chemical cleaning solvent waste Method for processing chemical cleaning solvent waste

1996-02-15

1997-01-21

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 210651, 210641, 210908, 210774, 210180, 210690, 134 10, 95149, 95158, B01D 6100

Patent

active

055956637

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.

REFERENCES:
patent: 4193206 (1980-03-01), Maffet
patent: 4436655 (1984-03-01), Masotto et al.
patent: 5183572 (1993-02-01), Benn
patent: 5348588 (1994-09-01), Winston

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