Plate type electro-deionization device

An electric desalination, plate-type technology, applied in the direction of magnetic field/electric field water/sewage treatment, etc., can solve the problems of low water utilization rate and high cost of electric desalination, reduce water consumption, improve water quality, and compact structure Effect

Active Publication Date: 2008-11-19
浙江龙净水业有限公司
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  • Abstract
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Problems solved by technology

[0008] The present invention also provides a plate-type electric desalter with compact structure, low input cost, high ut...

Method used

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  • Plate type electro-deionization device

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Embodiment

[0021] As shown in Figures 1 to 2, a plate-type electric desalter includes splints arranged at both ends, an electrode frame is arranged on the inner side of the splint 1, an insulating plate 3 is arranged between the splint 1 and the electrode frame, and the splint at the front end An anode is fixed on the inner electrode frame 13, and a cathode is fixed on the inner electrode frame 14 of the splint 2 at the rear end. Concentrated water inlet 1-1 and fresh water inlet 1-2 are provided on the electrode frame 13 inside the splint 1 at the front end, and a concentrated water outlet 2-1 and a fresh water outlet are provided on the electrode frame 14 inside the splint 2 at the rear end. 2-2 and polar water outlet 2-3. Between the electrode frame 13 and the electrode frame 14 of the two splints, an anion membrane 9 and an anode membrane 10 are arranged, and an anion membrane 9 and an anode membrane 10 form a pair of anion and cation exchange membrane pairs, and the electrode frame ...

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Abstract

The invention relates to an electric demineralizer, particularly relates to a plate electric demineralizer. The demineralizer comprises anodes, cathodes and anion exchange membranes and cation exchange membranes between the anodes and the cathodes. One pair of anion exchange membrane and cation exchange membrane forms a concentrate water chamber or a dilute water chamber, the concentrate water chamber and the water dilute chamber are in alternative arrangement, the pair of the anion exchange membrane and the cation exchange membrane is divided into a front membrane stack and a back membrane stack by an electrode water distribution plate, the concentrate water chamber and the dilute water chamber of the two parts of membrane stacks are provided with a partition board inside respectively, the dilute water chamber of the back membrane stack is also filled with ion exchange resin. The invention mainly provides a plate electric demineralizer which can not only reduce the water feed requirements of Electrodeionization (EDI) greatly and save the investment cost for a second-class reverse osmosis device, but also ensure higher quality of the water product; solve the technical problem of high requirements for EDI water feed in the prior art. A pre-demineralizer needs to be increased at the front end so as to improve the quality of water.

Description

technical field [0001] The invention relates to an electric desalination device, in particular to a plate type electric desalter. Background technique [0002] Liquid treatment technology refers to the technology of removing impurity ions contained in the liquid to obtain the required purity liquid. Currently known techniques for removing ions from liquids include reverse osmosis, ion exchange, electrodialysis, dialysis, and electrodeionization. [0003] Reverse osmosis is a membrane separation technology that applies an external pressure greater than the osmotic pressure on the side containing salt water, and water molecules continuously penetrate to the fresh water side to achieve the purpose of ion removal. The advantage of reverse osmosis technology lies in the high desalination rate, generally above 98%, but the disadvantage is the high operating pressure. [0004] Ion exchange is a method of removing ions from liquids using ion exchange resins. The technology has th...

Claims

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Application Information

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IPC IPC(8): C02F1/48
Inventor 傅叶明吴益尔
Owner 浙江龙净水业有限公司
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