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Separating device and water treatment equipment thereof

A technology of electrodeionization and ion exchange membrane, applied in the field of water treatment, which can solve the problems of complex design of electrochemical deionization structure, decline of desalination performance, water flow blockage, etc., to avoid gas and scaling, high water production rate, and water Less waste of resources

Pending Publication Date: 2021-09-17
GUANGDONG LIZI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the electrode chamber makes the structural design of electrochemical deionization very complicated. Once the control is not good, it will cause serious problems such as desalination performance, water flow blockage, and electrode burnout.

Method used

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  • Separating device and water treatment equipment thereof
  • Separating device and water treatment equipment thereof
  • Separating device and water treatment equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A bipolar membrane electrodeionization device, comprising at least one pair of electrode groups, the bipolar membrane electrodeionization device includes at least one pair of characteristic electrode groups and more than one bipolar electrode group located between the two electrodes constituting the characteristic electrode group Pole membrane, the characteristic electrode group includes at least one porous electrode. Each bipolar membrane is composed of a cation exchange membrane and an anion exchange membrane that are bonded together. There is no flow between the cation exchange membrane and the anion exchange membrane that constitute the same bipolar membrane. road.

[0039] A pair of characteristic electrode groups can be composed of two porous electrodes, and a pair of characteristic electrode groups can also be composed of a porous electrode and a common electrode. Common electrodes such as metal electrodes, titanium electrodes with ruthenium-yttrium coating, ruth...

Embodiment 2

[0065] A bipolar membrane electrodeionization device, such as image 3 , Figure 4 As shown, the other features are the same as those in Embodiment 1, except that in this embodiment, the porous electrode 100 is formed by stacking the current collector 130, the porous material 110, and the anion exchange membrane 120 sequentially, and the porous electrode 100 is a negative membrane electrode. The porous electrode 200 is formed by sequentially stacking a current collector 230 , a porous material 210 , and a cation exchange membrane 220 , and the porous electrode 200 is a positive membrane electrode. The porous electrode can be laminated and clamped by current collectors, porous materials, and ion-exchange membranes without the use of binders; or it can also be fixed by thermal lamination or bonded by binders.

[0066] The bipolar membrane electrodeionization device of the present embodiment, its desalination process is such, as image 3 As shown, during the desalination proces...

Embodiment 3

[0076] A bipolar membrane electrodeionization device, other features are the same as in Embodiment 1, the difference is that the porous electrode is not provided with a collector, and is only formed by laminating porous materials and ion exchange membranes. The electrical conductivity of the porous material in this embodiment meets the requirement of electrical conductivity, so no collector is required.

[0077] It should be noted that the specific structure of the two porous electrodes can be flexibly set according to needs, such as one porous electrode has a collector and the other porous electrode has no collector, or both porous electrodes have collectors at the same time, or both porous electrodes have collectors at the same time. The collector is not set, as long as the actual demand is met.

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Abstract

The invention relates to a bipolar membrane electrodeionization device and water treatment equipment with the same, wherein the bipolar membrane electrodeionization device comprises at least one pair of characteristic electrode group and more than one bipolar membrane positioned between two electrodes forming the characteristic electrode group; the electrode group at least comprises a porous electrode, wherein each bipolar membrane consists of a cation exchange membrane and an anion exchange membrane which are attached together. The bipolar membrane electrodeionization device adopts the structure of the porous electrode and the bipolar membrane, can avoid the problems of gas generation and scaling caused by hydrolysis of water in the electrode chamber in the prior art, can improve the desalination rate, and has the characteristics of high water production rate and less waste of water resources.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a bipolar membrane electrodeionization device and water treatment equipment with the device. Background technique [0002] In the traditional electrochemical deionization device, the flow channel between the electrode and the ion exchange membrane is the pole water chamber, in which the oxidation reaction occurs in the anode chamber to generate oxygen, the anode water is acidic, and the anode is easily corroded; the reduction reaction occurs in the cathode chamber, Hydrogen is produced, the cathode water is alkaline, and the cathode is easy to scale. Therefore, the generation of gas and scale causes the voltage drop in the electrode water chamber to increase, which makes the device work unstable and the overall efficiency is low. In addition, the electrode chamber of the electrochemical deionization device does not have the function of desalination, and the liquid flow p...

Claims

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Application Information

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IPC IPC(8): C02F1/469B01D61/48
CPCC02F1/4695B01D61/445B01D61/48Y02A20/124
Inventor 陈小平
Owner GUANGDONG LIZI TECH CO LTD
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