System for decontaminating dry cleaning waste water with control

Details System for decontaminating dry cleaning waste water with control System for decontaminating dry cleaning waste water with control

1991-12-05

1993-06-29

Drodge, Joseph W.

Liquid purification or separation

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

Material level or thickness responsive

8158, 68 18R, 210 961, 210 97, 210180, 2102571, 210258, 210259, B01D 2134

Patent

active

052231267

ABSTRACT:
A system for decontaminating waste water produced during dry cleaning operations wherein the waste water contains dry cleaning solvent and particulate contaminants, the system comprising: a storage tank including an inlet through which the waste water is introduced into the storage tank and walls defining a settling chamber having a bottom sediment zone, wherein at least a portion of the dry cleaning solvent and particulate contaminants in the waste water settle by gravity to form a sediment in the sediment zone and provide partially decontaminated waste water which contains reduced amounts of the dry cleaning solvent and particulate contaminants; pump means for removing the partially decontaminated waste water from the settling chamber; particulate filter means for removing substantially all of the particulates remaining in the partially decontaminated waste water to provide particulate free waste water; solvent filter means for removing substantially all of the dry cleaning solvent remaining in the particulate free waste water to provide decontaminated waste water; and evaporator means for evaporating the decontaminated waste water.

REFERENCES:
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.

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