Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1997-10-04
2000-02-22
Walker, W. L.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210651, 210660, 210663, 210723, 21032178, B01D 1500, C02F 100
Patent
active
060276495
ABSTRACT:
A system of purifying water to remove at least one of natural organic matter, color, turbidity, bacteria, cysts and oocysts, viruses, arsenic compounds and insoluble impurities. The system comprises the steps of providing a body of water to be purified; controlling the pH of the body in a range of 5 to 8; and adding a coagulant to the body to provide a floc. The floc is maintained in the body in a concentration in the range of 1 to 6, for purposes of adsorbing at least one of the natural organic matter, color, turbidity and bacteria to provide treated water. Thereafter, a first portion of the treated water and floc is removed from the body of water. A submerged semi-permeable membrane is provided in the body of water for removing a second portion of the treated water. The membrane has a pore size in the range of 0.02 to 1 .mu.m to provide a permeate comprised of purified water and to provide a retentate containing the floc. The body of water is treated with a mixing means to minimize membrane fouling and to provide thorough mixing of the floc in the body of water.
REFERENCES:
patent: 3763040 (1973-10-01), Timpe et al.
patent: 4028238 (1977-06-01), Allan
patent: 4171342 (1979-10-01), Hirko et al.
patent: 4390431 (1983-06-01), Amigues et al.
patent: 4676908 (1987-06-01), Ciepiela et al.
patent: 4698163 (1987-10-01), Zibrida
patent: 4895665 (1990-01-01), Colelli et al.
patent: 4897191 (1990-01-01), Langerak et al.
patent: 5008017 (1991-04-01), Kiehl et al.
patent: 5130051 (1992-07-01), Falk
patent: 5182019 (1993-01-01), Cote et al.
patent: 5248424 (1993-09-01), Cote et al.
patent: 5266210 (1993-11-01), McLaughlin
patent: 5378366 (1995-01-01), Yen
patent: 5427691 (1995-06-01), Kuyucak et al.
patent: 5480537 (1996-01-01), Yamasaki et al.
patent: 5484535 (1996-01-01), Downs
patent: 5500131 (1996-03-01), Metz
patent: 5518633 (1996-05-01), Brown et al.
patent: 5562829 (1996-10-01), Malcolm et al.
patent: 5609765 (1997-03-01), Bowman
patent: 5611934 (1997-03-01), Shepperd, III et al.
patent: 5614102 (1997-03-01), Sakurada
patent: 5639373 (1997-06-01), Mahendran et al.
Dempsey, Brian A., Effects of Charge and Coagulant Dose on NOM Removal and Membrane Fouling Mechanisms, 2 pages.
Benedek Andrew
Husain Hadi
Singh Manwinder
Alexander Andrew
Fleming Michael
Walker W. L.
Zenon Environmental Inc.
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