Device for treating oil sludge and oil-containing waste water

Details Device for treating oil sludge and oil-containing waste water Device for treating oil sludge and oil-containing waste water

1991-04-03

1992-03-03

Dawson, Robert A.

Liquid purification or separation

Serially connected distinct treating with or without storage...

With storage unit

2105122, 210186, 210188, 209149, 209211, 204149, B01D 1704, B01D 17038

Patent

active

050929984

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: 3787315 (1974-01-01), Bearden, Jr. et al.
patent: 4194972 (1980-03-01), Weintraub et al.
patent: 4501671 (1985-02-01), Bazell
patent: 4938876 (1990-07-01), Ohsol
patent: 4938877 (1990-07-01), Bock et al.

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