Method for removal of sulfate groups and chlorate groups from brine
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Nov 24, 1998
filing date -
Nov 28, 1997
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Expired
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Abstract
In removal of sulfate groups and chlorate groups from brine used for electrolysis, concentrated brine used in an electrolysis process or dilute brine whose concentration is decreased by electrolysis is fed to an anode chamber divided by a cation exchange membrane in a brine treating electrolyzer, where the concentrated or dilute brine is electrolyzed to recover chloride ions therein. The concentrated brine is electrolyzed at a rate of decomposition of salt higher than that in the ion exchange membrane electrolysis process of brine. Thereafter, the concentrated or dilute brine is discharged out of the electrolysis process.
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