Tubular membrane separation process and apparatus therefor

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210 79, 210321R, 210332, 210353, B01D 1300, B01D 3100

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active

041982932

ABSTRACT:
A tubular membrane separation apparatus and process, for reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposit from semipermeable membrane surfaces. The apparatus is of the multiple-stage type wherein the number of tubular modules per stage gradually decreases in a pattern like a Christmas tree laid on its side. Elastic elements are forced through the tubular modules lined with the semipermeable membrane, the number of the elements being gradually decreased stage by stage, so that the deposit is mechanically rubbed off from the membrane surfaces with an optimum number of elastic elements for each stage.

REFERENCES:
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patent: 3541006 (1970-11-01), Bixler et al.
patent: 3552574 (1971-01-01), Lowe
patent: 3795317 (1974-03-01), Van Zon
patent: 3819513 (1974-06-01), Ishii et al.
patent: 3856569 (1974-12-01), Strong
patent: 3883431 (1975-05-01), Ishii et al.
patent: 3974068 (1976-08-01), Ebner et al.
"Reverse Osmosis at Coalinga, California", J. W. McCutchan et al., Water and Sewage Works, Sep. 1971.
"An Analsis of R.O. Characteristics of Am. Standard Tubular Module", Desalination, 16 (1975), pp. 235-244, Ohya et al.

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