System for decontamination dry cleaning waste water

Details System for decontamination dry cleaning waste water System for decontamination dry cleaning waste water

1994-06-23

1996-06-11

Drodge, Joseph W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Material level or thickness responsive

68 18F, 202176, 210104, 210167, 210182, 210258, 210259, B01D 1712, B01D 2130, B01D 3604

Patent

active

055252133

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.

REFERENCES:
patent: 3192155 (1965-06-01), Bready et al.
patent: 3692467 (1972-09-01), Durr et al.
patent: 4354364 (1982-10-01), Holder et al.
patent: 4513590 (1985-04-01), Fine
patent: 4637232 (1987-01-01), Zucchini
patent: 4664754 (1987-05-01), Caputi et al.
patent: 4954222 (1990-09-01), Durr et al.
patent: 5076936 (1991-12-01), Metz
patent: 5090221 (1992-02-01), Sewter et al.
patent: 5223126 (1993-06-01), Phillips

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