Anti-freeze recycling apparatus and method

Details Anti-freeze recycling apparatus and method Anti-freeze recycling apparatus and method

1990-04-18

1992-02-25

Dawson, Robert A.

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

2101953, 210295, 210296, 2103231, 206569, B01D 3702

Patent

active

050910817

ABSTRACT:
A method and apparatus are disclosed for cleansing a used autombobile anti-freeze solution. The method and apparatus include pre-filtering a used solution with a particulate filter selected to filter contaminant sized greater than a predetermined minimum size. An ultrafiltration membrane filter is provided. The ultrafiltration filter has a semi-permeable membrane separating a concentrate portion from a permeate portion. The pre-filtered solution is passed to the concentrate portion and the permeate portion is connected to a storage tank. Additives are provided for replenishing filtered constituents.

REFERENCES:
patent: 4528093 (1985-09-01), Winer
patent: 4692251 (1987-09-01), Hilgren
patent: 4895649 (1990-01-01), Brandt et al.
patent: 4946596 (1990-08-01), Miller, Jr.
patent: 4966693 (1990-10-01), Brandt et al.

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