Water purification process

Details Water purification process Water purification process

1987-12-21

1989-02-28

Cintins, Ivars

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

210637, 210638, 210641, 210669, 210694, 210137, 2102572, 210259, 210266, 210900, C02F 900

Patent

active

048082872

ABSTRACT:
Potable water from a municipal water supply is treated to remove suspended solids, organic and inorganic dissolved solids, dissolved carbon dioxide gas and metal contaminants so as to produce ultra-pure water in the 16 megohm-cm.sup.3 and greater range. The process involves prefilteration of the water; activated carbon filtration; secondary guard filtration; double reverse osmosis treatment of the water. The process further involves the use of either an anion exchange or electrodialysis unit to remove further impurities from the water. A method for recycling part of the discharged water is also provided.

REFERENCES:
patent: 3774763 (1973-11-01), Yall et al.
patent: 3836458 (1974-09-01), Wallis et al.
patent: 3870033 (1975-03-01), Faylor et al.
patent: 4160727 (1979-07-01), Harris
patent: 4161445 (1979-07-01), Coillet
patent: 4196081 (1980-04-01), Pavia
patent: 4548716 (1985-10-01), Boeve
patent: 4676908 (1987-06-01), Ciepiela et al.
Kalbfuss, "Design of Modern High Purity Water Systems"; vol. 4 Ultrapure Water 18-30 (1987).

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