Anion exchange resin recovery process applied to biological extraction

Abstract

The invention discloses an anion exchange resin recovery process applied to biological extraction. The anion exchange resin recovery process comprises the following steps: sampling 400ml of invalid anion exchange resin for nucleotide separation, and loading into an ion exchange column; preparing 800ml of regenerant and storing in a storage tank; circularly soaking for 24 hours by using the regenerant in volume of 1-4 times that of the resin; after soaking, washing with water with the volume 4-8 times that of the resin, and regenerating with 1-2 mol / L HCL and 1-2 mol / L NaOH respectively; and performing static adsorption inspection on the adsorption effect of the regenerated resin. According to the invention, the use frequency of the anion exchange resin can be increased from 30 times to 100 times; according to the invention, the polluted resin is continuously used after being treated, so that the generation of solid waste is reduced; after the anion exchange resin is treated by the method, the resin cost can be reduced by 50% every year; common regeneration methods include acid regeneration, alkali regeneration, salt regeneration, alkali salt regeneration and the like, while alcohol regeneration and alcohol and hydrochloric acid regeneration are adopted in the method, so that the regeneration effect is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of anion exchange resins, in particular to an anion exchange resin recovery process applied to biological extraction. Background technique [0002] Anion exchange resins are used in biological extraction products. Because the raw liquid extracted by biological methods contains more organic impurities, after the ion exchange resin is used for a certain frequency, the adsorbed organic matter will wrap the resin or block the pore size of the resin, thus affecting the quality of the product. The effect of adsorption and separation of the product is serious and even makes the resin pollution invalid. [0003] After testing various recovery methods at home and abroad to treat anion exchange resins, the contaminated resins still cannot be recovered to use standards, so a new process needs to be proposed to solve this technical problem. Contents of the invention [0004] The object of the present invention is to ...

AI Technical Summary

Problems solved by technology

[0002] Anion exchange resins are used in biological extraction products. Because the raw liquid extracted by biological methods contains more organic impurities, after the ion exchange resin is used for a certain frequency, the adsorbed organic matter will wrap the resin or block the pore size of the resin, thus affecting the quality of the product. The effect of adsorption and separation of the product, in severe cases, even makes the resin pollution invalid

[0003] After testing various recovery methods at home and abroad to treat anion exchange resins, the contaminated resins still cannot be recovered to use standards, so a new process needs to be proposed to solve this technical problem

Images