Apparatus for processing coolant

Details Apparatus for processing coolant Apparatus for processing coolant

1988-12-05

1990-01-23

Sever, Frank

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

2102572, 210294, B01D 1300

Patent

active

048956490

ABSTRACT:
Apparatus for processing liquid, particularly coolant used in metal-working machines, is set forth. The apparatus is adaptable for processing coolant in a wide variety of coolant systems to meet a variety of requirements of metal-working machines in a plant. The apparatus includes a coalescing unit which separates free oil from the coolant and a filtering unit which separates solid particles from the coolant. The processed coolant is then discharged back into the coolant system, along with fresh coolant. Some contaminants, including dissolved organics such as surfactants and emulsified oils remain in the coolant. Periodically, the coolant must be disposed of, being beyond its useful life in the coolant system. The coolant is then processed by an ultrafiltration unit which removes further contaminants and, if necessary, by a reverse osmosis unit which removes additional contaminants to make the remaining liquid suitable for discharge into a sewer system or the like.

REFERENCES:
patent: 4053399 (1977-10-01), Donnelly et al.
patent: 4160726 (1979-07-01), Del Pico
patent: 4567207 (1986-01-01), Ljubman et al.
patent: 4638766 (1987-01-01), Bunch et al.
patent: 4770784 (1988-09-01), Davis et al.

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