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A device for electrically regenerating mixed-bed ion exchange resin by bipolar membrane method

A technology of ion exchange resin and bipolar membrane, which is used in ion exchange, ion exchange regeneration, ion exchange bed cleaning/flushing, etc. It can solve the problems of storing acid-base regeneration liquid, complicated operation, polluting the environment, etc., and achieve equipment usage costs. Low cost, simplified operation and favorable effect of promotion

Active Publication Date: 2017-04-12
SUZHOU HUAQING WATER TREATMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Due to the traditional mixed bed ion exchange resin regeneration process has many defects such as polluting the environment, complicated operation, and the need to store acid-base regeneration solution.

Method used

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  • A device for electrically regenerating mixed-bed ion exchange resin by bipolar membrane method
  • A device for electrically regenerating mixed-bed ion exchange resin by bipolar membrane method
  • A device for electrically regenerating mixed-bed ion exchange resin by bipolar membrane method

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Experimental program
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Effect test

Embodiment 1

[0037] figure 1 It is a schematic diagram of the appearance of the device of the present invention when the mixed bed resin is regenerated in vivo, including the following parts:

[0038]①Bipolar membrane acid-base generator 3: It is a plate and frame type, and it is composed of multiple sets of membrane pairs. Each set of membrane pairs is composed of a negative membrane 9, a positive membrane 10 and a bipolar membrane 11. There is a separator between each membrane, and the two ends are electrodes and end plates, which are fixed with multiple bolts and pressed into a whole. The specific assembly method: a negative membrane, a positive membrane and a bipolar membrane are combined as a Groups, starting from the anode 8 from left to right, arranged in sequence, the first group of negative film 9, positive film 10 and bipolar film 11, and then the second group of negative film 9, positive film 10 and bipolar film 11, repeat in turn Arrange each group until the right end is final...

Embodiment 2

[0046] image 3 It is a schematic diagram of the appearance of the device of the present invention when regenerating mixed bed resin in vitro.

[0047] The appearance of the device of the present invention when the mixed bed resin is regenerated in vitro is roughly the same as that when the mixed bed resin is regenerated in vivo.

[0048] The difference between in vitro regeneration of mixed bed resin and in vivo regeneration of mixed bed resin is that during in vitro regeneration, the mixed anion and cation resins in the mixed bed are transported to the separator for separation during regeneration, and the separated anion and cation resins are sent to the Enter negative resin regeneration tank 13 and positive resin regeneration tank 14. The generated dilute alkali and dilute acid regenerating solutions enter the anion resin regeneration tank 13 and the cation resin regeneration tank 14 respectively. After the anion and cation resins are regenerated and cleaned, they are sen...

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PUM

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Abstract

The invention relates to an apparatus for electrically regenerating mixed bed ion exchange resin through a bipolar membrane method. The apparatus is composed of a bipolar membrane acid and alkali producer, a liquid storage device and a resin regenerator, wherein the bipolar membrane acid and alkali producer has a plate frame shape, and is composed of a plurality of groups of membranes, each group of the membranes is composed of a cationic membrane, an anionic membrane and a bipolar membrane, and two ends of the bipolar membrane acid and alkali producer are provided with electrodes and end plates respectively, are fixed by a plurality of bolts and are compacted to form an integral body; the liquid storage device is composed of a diluted acid regenerated liquid tank, a diluted alkali regenerated liquid tank, a diluted brine tank and an electrode water tank; and the regeneration modes of the resin regenerator comprise an internal regeneration mode and an external regeneration mode. In the invention, traditional technologies using an acid and alkali regeneration mixed bed are improved, an acid and alkali storage and transportation link is canceled, and a precedent for preparing diluted acid and alkali regenerated liquid regenerated mixed bed resin through dissociating water by using the bipolar membrane method under the action of a direct current field is set, so the mixed resin is thoroughly regenerated, and the regeneration cost is reduced; and no wastes are basically discharged from the regeneration apparatus, so the environment is protected, and the safety level is improved.

Description

technical field [0001] The invention relates to a device for regenerating invalid ion exchange resin in ion exchange water treatment and desalination technology. Background technique [0002] At present, various advanced desalination technologies such as electrodeionization and reverse osmosis have been promoted and used in the process of preparing primary pure water, but mixed bed ion exchange desalination is still used as a fine treatment equipment for preparing pure water in electric power, electronics, chemical industry, It is widely used in pharmaceutical and other fields. Taking thermal power plants as an example, only 5-10% of the boiler feed water desalination system uses electrodeionization desalination. Others still use mixed bed ion exchange desalination, while Condensate polishing desalination system is equipped with mixed bed ion exchange desalination. In the mixed-bed ion exchanger, H-type strongly acidic cation exchange resin and OH-type strongly basic anion-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J49/09B01J49/60B01J49/20B01J49/30
Inventor 王明亚王方王明太
Owner SUZHOU HUAQING WATER TREATMENT TECH