Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-03-06
1980-04-15
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 79, 210321R, 210332, 210353, B01D 1300, B01D 3100
Patent
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.
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"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.
Ebara Katsuya
Ogawa Toshio
Takahashi Sankichi
Hart Charles N.
Hitachi , Ltd.
Hitachi Plant Engineering and Construction Co., Ltd.
Sadowski David R.
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