Depletion compartment and spacer construction for electrodeionization apparatus
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United States of America Patent
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May 31, 1988
Grant Date -
N/A
app pub date -
Oct 1, 1986
filing date -
Oct 1, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrodeionization apparatus is provided for removing ions from liquids. Liquid to be purified is passed through depleting compartments containing mixed anion and cation exchange resin beads while a second liquid is passed through concentrating compartments free of ion exchange resin beads. Ions, under influence of an electrical potential, pass from the depleting compartments into the concentrating compartments through ion permeable membranes. A spacer for each depleting compartment is provided which retains the beads within the compartment, promotes even flow through the compartment and prevents plugging of the compartment inlet by the beads and external foulants.
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