Method for recovering anion exchange resin polluted by organic matters and recovery medicine

An exchange resin and anion technology, applied in the field of resuscitative agents, can solve the problems of not being able to increase the number of strong base groups, and the elution effect of organic pollution, so as to restore the exchange capacity, better elution effect, and enhanced elution effect of effect

Active Publication Date: 2012-09-12
HARBIN INST OF TECH
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the existing resuscitation method has serious pollution to organic matter or that the elution effect of the macromolecular linear organic matter is not good when the anion exchange resin is tightly entwined and that the existing resuscitation agent cannot increase the number of strong base groups. And provide a kind of resuscitating method and resuscitating agent of anion exchange resin polluted by organic matter

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment one: the resuscitating method of the anion exchange resin polluted by organic matter and the medicament formula in this embodiment are carried out according to the following steps: one, the transformation of anion exchange resin: be that the salt water of 8%~10% with weight percentage concentration is to anion exchange The resin is soaked in a cycle, the temperature is 18~22°C, the circulation flow rate is 2.5~3.5m / h, and the circulation is adopted in the way of top in and bottom out. After 6~10 hours of cyclic soaking, the transformation is completed. 2. Flushing: After the transformation is completed, the waste liquid is drained, and the anion exchange resin is reversely flushed with desalted water. The flushing time is 1.5~2.5h, and the flushing flow rate is 18~22m / h. 3. Resuscitating the anion exchange resin by removing organic contamination: the total volume of the resuscitating agent is 4 times the volume of the anion exchange resin to be recove...

specific Embodiment approach 2

[0018] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the anion exchange resin is transformed into an anion exchange resin with a weight percent concentration of 8.5%~9.5% saline for cyclic soaking of the anion exchange resin, and the temperature is 19~21 ℃, the circulation flow rate is 2.8~3.2m / h, the circulation is adopted in the way of top in and bottom out, and the cycle soaking time is 7~9 hours. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step one, the anion exchange resin is transformed into an anion exchange resin with a weight percent concentration of 9% saline to circulate and soak the anion exchange resin at a temperature of 20°C and a circulation flow rate of 3m / h, using top-in and bottom-out circulation, and the cycle soaking time is 8 hours. Other steps and parameters are the same as in the first embodiment.

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

PUM

No PUM Login to view more

Abstract

The invention relates to a method for recovering anion exchange resin polluted by organic matters and a recovery medicine, and aims to solve the problems that an elution effect is poor in the conventional recovery method and the conventional recovery medicine cannot increase the number of strong alkali groups when the anion exchange resin is severely polluted by the organic matters or macromolecular linear organic matters are tightly wound in the anion exchange resin. The method for recovering the anion exchange resin polluted by the organic matters comprises the following steps of: 1, transforming the anion resin; 2, flushing; 3, removing the organic matters from the anion resin to recover the anion resin; 4, flushing; and 5, regenerating. The recovery medicine used in the method for recovering the anion exchange resin polluted by the organic matters consists of NaCl, NaOH, an organic aid and water. The method is suitable for recovering the anion resin polluted by the organic matters and removing the organic matters from cation resin.

Description

technical field [0001] The invention relates to a recovery method and a recovery agent of an anion exchange resin polluted by organic matter. Background technique [0002] In the field of water treatment, the engineering practice of using ion exchange resins for water softening and desalination has a history of nearly seventy years. Cations in natural water such as Na + , Ca 2+ , and Mg 2+ Removed by cation exchange resin. Anions in water such as Cl - , SO 4 2- , are removed by anion exchange resin. [0003] Anion exchange resins will adsorb organics in the incoming water, but during regeneration, these organics will not be eluted from the resin like anions and cations. This will cause organic contamination of the anion exchange resin. Regarding the removal of organic contamination from anion exchange resins, scientists in the field of water treatment have developed some classic recovery methods. It is more common to use a higher concentration of salt solution (gen...

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

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J49/00B01J41/12B01J47/022
Inventor 李伟光刘景辰
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap