Device and method for electrodialysis
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United States of America Patent
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Feb 16, 2010
Grant Date -
Apr 1, 2004
app pub date -
Aug 10, 2001
filing date -
Aug 11, 2000
priority date (Note) -
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Abstract
An improved apparatus and operating method related thereto for deionizing water to produce substantially pure water using electric field and ion exchange materials are disclosed, including embodiments incorporating one or more of the novel features of brine and electrode streams flowing in a direction counter-current to the stream being deionized, a filling of the brine stream with stratified ion exchange materials, a stream mixing feature for mixing the stream being deionized, a gas removal feature for removal of gases, a spiral-wound embodiment of an electrodialysis device according to the invention, and a method for determining the preferred operating current for electrodialysis systems according to this invention.
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