Fluid purification devices and methods employing deionization followed by ionization followed by deionization
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United States of America Patent
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Aug 24, 2004
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Mar 24, 2000
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Jun 20, 1997
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Abstract
The invention provides the continuous, integrated methods and devices for substantially removing ionized and ionizable carbon compounds from an aqueous stream by first deionization step to produce a first product stream, ionizing nonionized and nonionizable carbon compounds in such stream to form further ionized and ionizable compounds, and removing the latter by a second deionization step. The method can be performed for example in an apparatus including an EDI unit (10), an ionizing unit (60), and EDI unit (100).
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