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Electric device for production of deionized water

A technology for electrodeionization and deionization of water, applied in electrodialysis, separation methods, semi-permeable membrane separation, etc., can solve the problems of ion exchange membrane damage, water quality degradation, scale penetration, etc., and achieve the effect of preventing scale formation

Active Publication Date: 2013-02-20
ORGANO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the current required for the removal of ions weakens, which leads to a decrease in the quality of the treated water
In addition, there is also the possibility that the grown scale penetrates into the inside of the ion exchange membrane, resulting in damage to the ion exchange membrane

Method used

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  • Electric device for production of deionized water
  • Electric device for production of deionized water
  • Electric device for production of deionized water

Examples

Experimental program
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Effect test

Embodiment approach 1

[0040] One example of an embodiment of the electrodeionization apparatus for producing deionized water according to the present invention will be described with reference to the accompanying drawings.

[0041] figure 1 is a diagram schematically showing the configuration of the deionized water production apparatus according to the present embodiment. exist figure 1 In the deionized water preparation device shown in , the deionization treatment unit is arranged between the cathode chamber E1 provided with the cathode and the anode chamber E2 provided with the anode. The deionization processing unit is composed of a deionization chamber D and a pair of concentrating chambers C1 and C2 disposed adjacent to the deionization chamber D on opposite sides thereof. In the following description, among the pair of concentrating chambers C1 and C2, the concentrating chamber C1 adjacent to the anode chamber E2 is referred to as "the first concentrating chamber C1", and the concentratin...

Embodiment approach 2

[0068] Another example of an embodiment of the electrodeionization apparatus for producing deionized water according to the present invention will be described with reference to the accompanying drawings. The deionized water production apparatus according to the present embodiment has the same configuration as the apparatus according to Embodiment 1 except that a plurality of deionization treatment units are disposed between the cathode chamber and the anode chamber. Therefore, only configurations different from the deionized water production apparatus according to Embodiment 1 will be described below. A description of the same configuration will not be made.

[0069] figure 2 A diagram schematically showing the configuration of a deionized water producing apparatus according to the present embodiment. exist figure 2 In the deionized water preparation device shown in , two deionized treatment units are arranged between the cathode chamber E1 and the anode chamber E2. The...

Embodiment approach 3

[0113] will refer to Figure 4 Yet another example of an embodiment of the deionized water producing apparatus according to the present invention is described. The deionized water production apparatus according to this embodiment has the same basic configuration as that according to Embodiment 2. Therefore, only the differences from the deionized water production apparatus according to Embodiment 2 will be described below. Descriptions for the same points will not be repeated.

[0114] Such as Figure 4 As shown in , in the deionized water producing apparatus according to the present embodiment, the sub-deionization chamber S1 is disposed between the cathode chamber E1 and the second concentrating chamber C2. The sub-deionization chamber S1 is adjacent to the cathode chamber E1 with the sixth anion exchange membrane a6 interposed therebetween. The sub-deionization chamber S1 is adjacent to the second concentrating chamber C2, and the first anion exchange membrane c1 is ins...

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Abstract

The disclosed electric device for the production of deionized water is provided with a demineralization treatment unit comprising: a demineralization chamber (D); and a pair of concentration chambers (C1 and C2) provided on both sides of the demineralization chamber (D) and filled with anion exchangers. The demineralization chamber (D) is partitioned by an ion-exchange membrane into a first small demineralization chamber (D-1), adjacent to one concentration chamber (C1), and a second small demineralization chamber (D-2), adjacent to the other concentration chamber (C2). The first small demineralization chamber (D-1) is filled with an anion exchanger, and the second small demineralization chamber (D-2) is filled with an anion exchanger and a cation exchanger ordered such that the anion exchanger is the last ion exchanger that water being treated passes through.

Description

technical field [0001] The present invention relates to electrodeionization apparatus for producing deionized water and, more particularly, to the structure of a deionization chamber. Background technique [0002] Deionization devices are known for producing deionized water, in which the deionization takes place by passing the water to be treated through ion exchangers. In these production devices, when deionization performance decreases due to saturation of ion exchange groups, it is necessary to regenerate ion exchange groups in ion exchangers with chemicals (base or acid). More specifically, what is required is to use the acid-derived H + and OH from the base - Displaces anions and cations adsorbed to ion exchange bases. In recent years, an electrodeionization device for producing deionized water that does not require regeneration with chemicals has been developed and brought into practical use to overcome the operational drawbacks described above. [0003] An electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469B01D61/48
CPCC02F2001/422C02F2001/46133C02F2001/425C02F2001/427C02F2201/46115B01D57/02C02F2201/4618B01D61/48B01D61/445C02F1/4695C02F2303/22Y02A20/124
Inventor 长谷川一哉浅川友二佐佐木庆介
Owner ORGANO CORP
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