Backwashing reverse-osmosis and ultrafiltration membranes by ele

Details Backwashing reverse-osmosis and ultrafiltration membranes by ele Backwashing reverse-osmosis and ultrafiltration membranes by ele

1979-08-07

1980-11-04

Hart, Charles N.

Liquid purification or separation

Processes

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

210655, 204180R, B01D 1300, B01D 1302, C02B 182

Patent

active

042318653

ABSTRACT:
Improved efficiency of reverse-osmosis and ultrafiltration processes is achieved by backwashing membranes by means of electroosmosis. This is achieved by application of an electric potential across the membrane, thereby causing a backflow of water through the membrane.

REFERENCES:
patent: 2741595 (1956-04-01), Juda
patent: 3392100 (1968-07-01), Kollsman
patent: 3453201 (1969-07-01), Mihara et al.
patent: 3657106 (1972-04-01), Smith
patent: 3697410 (1972-10-01), Johnson et al.
patent: 3827976 (1974-08-01), Stana et al.
patent: 3850797 (1974-11-01), Lyall
patent: 3853756 (1974-12-01), Stana
patent: 3870613 (1975-03-01), Nakamura et al.
patent: 3940336 (1976-02-01), Macevicz et al.
Millipore Catalogue and Purchasing Guide, Copyright 1977, Millipore Corp., Bedford, Mass., p. 48.

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