Method for electrically regenerating OH type anion bed failure anion exchange resin through bipolar membrane method

An exchange resin, bipolar membrane electrodialysis technology, applied in ion exchange, ion exchange regeneration, ion exchange bed cleaning/flushing, etc., can solve the problem of waste acid and alkali discharge polluting the environment, low acid and alkali utilization rate, and complex regeneration operation. and other problems, to achieve the effect of improving the working conditions of workers, convenient regeneration operation, and simplified operation.
CN109908979AInactive Publication Date: 2019-06-21SUZHOU HUAQING WATER TREATMENT TECH
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU HUAQING WATER TREATMENT TECH
Publication Date
2019-06-21
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for electrically regenerating an OH type anion bed failure anion exchange resin through a bipolar membrane method, wherein the method comprises: dilute salt water preparing, dilute alkali regeneration liquid preparing, back flushing, regeneration and washing, and the mass percentage concentration of the dilute alkali regeneration liquid used in the regeneration ofthe OH type anion bed failure anion exchange resin is less than or equal to 8%. According to the present invention, the new process for preparing the alkali liquid for the OH type anion bed failure anion exchange resin regenerating from the salt water by the bipolar membrane electrodialyzer according to the water dissociation effect under the action of the direct current electric field is provided, and can replace the traditional process for chemically regenerating the OH type anion bed failure anion exchange resin by purchasing the alkali liquid, such that the regeneration level of the OH type anion bed anion resin is improved, the storage and transportation link of the regenerated alkali liquid is eliminated, the regeneration operation of the OH type anion bed failure anion exchange resin is convenient, the safety level is improved, and the environment is friendly.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for regenerating spent ion exchange resins in ion exchange processes. Background technique

[0002] Ion exchange technology has been widely used in petrochemical, light industry, food, medicine, metallurgy, atomic energy, electric power and environmental protection, involving all aspects of national economy and people's life. Taking a thermal power plant as an example, the preparation of boiler feed water and condensate polishing requires the use of various advanced physical and chemical treatments and various membrane technologies, as well as the use of ion exchange water treatment technology, which requires the use of various ion exchange equipment. , such as yang bed, yin bed, mixed bed, etc. These ion exchange devices are all filled with ion exchange resins, and the ion exchange resins must be regenerated after the equipment runs to treat water and becomes invalid, so that the invalid ion exchange resins can recov...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More