Method and device for treating oil sludge and oil-containing was

Details Method and device for treating oil sludge and oil-containing was Method and device for treating oil sludge and oil-containing was

1990-10-03

1991-10-22

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210737, 210770, 210 787, 210806, 209149, 209211, 208 13, 208187, 204186, 204188, 204190, 204 98, 134 26, 134 27, 134 28, B01D 2126

Patent

active

050593323

ABSTRACT:
A mixture of an oil sludge and an oil-contained waste water is first separated into a first oil-contained water and an oily dust containing metal-contained dust, fine metal powder and small fragments. Secondly, the oily dust is washed and separated into a harmless oil-free dust and a second oil-contained water containing the metal. Finally, both the first and second oil-contained water are separated into oil, harmless water and metal hydroxide by electrolysis. Thus, the mixture of the oil sludge and the oil-contained waste water is separated into components, which are in turn recovered, recycled, or converted into new materials, and the purification of the waste water can be realized.

REFERENCES:
patent: 4194972 (1980-03-01), Weintraub et al.
patent: 4501671 (1985-02-01), Bazell
patent: 4938876 (1990-07-01), Ohsal
patent: 4938877 (1990-07-01), Bock et al.

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