Method for separating oil from water

Details Method for separating oil from water Method for separating oil from water

1974-03-18

1976-02-24

Hart, Charles N.

Liquid purification or separation

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

Responsive to fluid flow

203 47, 210 43, 210 54, 210 73W, B01D 1104

Patent

active

039403343

ABSTRACT:
A method for separating oil from water, wherein, in order to simplify the treatment processes, to improve separation efficiency, and to make possible the recycling of added solvents, in the course of separation treatment of oil from waste water containing fats and oils, paraffinic hydrocarbons of low specific gravities, as extractive solvents for fats and oils, and inorganic or organic coagulants are added to the waste water; the mixture is then stirred and allowed to stand; the oil-containing scum separating as an upper layer is then removed so as to separate the oil from water, and furthermore, the solvent previously added is recovered from the oil-containing scum so removed by means of distillation.

REFERENCES:
patent: 2502485 (1950-04-01), Saunders et al.
patent: 2588794 (1952-03-01), Barton
patent: 2702794 (1955-02-01), Kellogg
patent: 2919246 (1959-12-01), DeBoer et al.
patent: 3446732 (1969-05-01), Gasser et al.
patent: 3715306 (1973-02-01), Mar
patent: 3756959 (1973-09-01), Vitalis et al.
patent: 3799872 (1974-03-01), Hargis et al.
patent: 3872000 (1975-03-01), Hamada et al.

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