Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1978-04-13
1981-03-10
Spear, Jr., Frank A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210335, 210353, 210355, 2104332, B01D 3100, B01D 1300
Patent
active
042552559
ABSTRACT:
An apparatus and process for tubular membrane separation, such as reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposits from the semipermeable membrane surfaces. For the removal of the deposits, elastic elements are passed, together with the feed solution being treated, through the tubular modules lined with semipermeable membranes, separated from the solution, and are recycled with a fresh supply of the solution from a tank, so that the semipermeable membranes are continuously cleaned while separating a part of the solution by permeation therethrough.
REFERENCES:
patent: 3795317 (1974-03-01), Van Zon
patent: 3819513 (1974-06-01), Ishii et al.
patent: 3856569 (1974-12-01), Strong
McCutchan et al., "Reverse Osmosis at Coelinga, California", a paper presented on May 22, 1969 at annual conf., AWWA, pp. 345-353.
Ebara Katsuya
Ogawa Toshio
Takahashi Sankichi
Hitachi , Ltd.
Hitachi Plant Engineering and Construction Co., Ltd.
Spear, Jr. Frank A.
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