Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions
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United States of America Patent
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Aug 18, 1987
Issued Date -
N/A
app pub date -
May 20, 1985
filing date -
May 13, 1982
priority date (Note) -
Expired
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Abstract
Process and apparatus are provided for demineralizing aqueous solutions without using regenerating chemicals. Oppositely charged ions are electrolytically generated within electrode chambers and diffused into the stream of aqueous solution to be demineralized flowing in cross-current thereto. In their migration in response to the application of an electric potential, the ion streams are subjected to displacement steps in cation and anion exchange masses separated by selectively permeable ion exchange membranes. The aqueous solution alternately passes through the cation and anion exchange masses resulting in a demineralized aqueous stream and an enriched brine stream.
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