Waste water treatment apparatus and washing method thereof

Details Waste water treatment apparatus and washing method thereof Waste water treatment apparatus and washing method thereof

1996-06-24

1997-11-25

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 2101952, 2102572, 21032169, 21033301, 210799, 210134, 210106, B01D 6100, B01D 2400, C02F 144

Patent

active

056908300

ABSTRACT:
A waste water treatment apparatus which can discharge cleaned waste water while separating and recovering insoluble granular components such as emulsions contained in various kinds of waste waters and various kinds of industrial waste waters, while minimizing the decrease of permeation flux by an effective separation membrane washing, and a washing method of the apparatus are disclosed. In washing the separation membrane, a passageway for water permeated through the separation membrane is intercepted, and a compressed gas is introduced into at least a waste feeding side of the separation membrane for a predetermined time, thereby flowing a gas liquid mixed liquid.

REFERENCES:
patent: 4366063 (1982-12-01), O'Connor
patent: 4931186 (1990-06-01), Ford et al.
patent: 4935143 (1990-06-01), Kopp et al.
patent: 5227071 (1993-07-01), Torline et al.
patent: 5342863 (1994-08-01), Buckley et al.
Derwent Abstract S61129094 (Jun. 17, 1986).
Derwent Abstract J56024006 (Mar. 7, 1981).

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