System for decontamination dry cleaning waste water
US5525213A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Jun 23, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/048
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for decontaminating waste water produced during dry cleaning operations which contains dry cleaning solvent and particulate contaminants. The system may preferably include a storage tank having an inlet through which waste water is introduced into the storage tank and a settling chamber having a bottom sediment zone; a particulate filter for removing substantially all of the particulate contaminants remaining in partially decontaminated waste water removed from the tank to provide particulate free waste water; a solvent filter for removing substantially all of the dry cleaning solvent remaining in the particulate free waste water to provide decontaminated waste water; a pump, located between the particulate filter and the solvent filter; an evaporator for evaporating the decontaminated waste water; and a recovery device for recovering the evaporated decontaminated water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.