Water purification process
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United States of America Patent
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-
Feb 28, 1989
Grant Date -
N/A
app pub date -
Dec 21, 1987
filing date -
Dec 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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