초록 ▼

A depletion compartment for a deionization apparatus is provided. The depletion compartment includes a spacer containing longitudinal ribs that divide an open central section of the spacer into subcompartments, an anion permeable membrane and a cation permeable membrane. Each membrane is formed from

A depletion compartment for a deionization apparatus is provided. The depletion compartment includes a spacer containing longitudinal ribs that divide an open central section of the spacer into subcompartments, an anion permeable membrane and a cation permeable membrane. Each membrane is formed from an ion permeable resin supported on an ion permeable support. Each membrane is skived at the point of bonding of the membranes of the spacer so that the support portion of the membranes is bonded directly to the spacer.

대표청구항 ▼

In a deionization apparatus adapted to remove ions from a liquid having a cathode compartment at a first end of said apparatus, an anode compartment at an end of said apparatus opposite said first end, a plurality of alternating ion depletion compartments and ion concentration compartments positione

In a deionization apparatus adapted to remove ions from a liquid having a cathode compartment at a first end of said apparatus, an anode compartment at an end of said apparatus opposite said first end, a plurality of alternating ion depletion compartments and ion concentration compartments positioned between said anode compartments, each of said ion depletion compartments having a thickness defined by an anion permeable membrane and a cation permeable membrane, each of said membranes comprising a substrate coated by mechanical adhesion on both surfaces of said substrate with an anion permeable resin or a cation permeable resin, means for passing a first liquid to be purified through said ion depletion compartments, means for passing a second liquid for accepting ions from said first liquid, through said concentration compartments, means for applying an electrical voltage between an anode in said anode compartment and a cathode in said cathode compartment and means for recovering purified liquid from said depletion compartment, the improvement which comprises said ion depletion compartments having a spacer element having a first surface adhered directly to the substrate of the anion permeable membrane and a second surface adhered directly to the substrate of the cation permeable membrane thereby to seal a space between said membranes to prevent liquid in said concentration compartments from entering said dilution compartments, said anion permeable membrane being coated over an entire first anion surface with said anion permeable resin and being partially coated with waid anion permeable resin over a second anion surface to leave said substrate partially exposed on said second anion surface thereby to permit direct adherence of the substrate in said anion permeable membrane to said spacer element, said cation permeable membrane being coated over an entire first cation surface with said cation permeable resin and being partially coated with said cation permeable resin over a second cation surface to leave said substrate partially exposed on said second cation surface thereby to permit direct adherence of the substrate in said cation permeable membrane to said spacer element.