Resin regeneration in water treatment plays a vital role. There are several factors, such as regeneration agent purity and dosage. So we have to determine the optimal dosage of purity and regeneration agent. Regenerant acid purity is generally considered better than the regeneration of sulfuric acid, hydrochloric acid, sulfuric acid regeneration cost less than. Regenerant high purity, low impurity content, a high degree of resin regeneration, especially for greater impact on the anion resin. Renewable dosage amount of regenerant important factor affecting the regeneration, the concept is the unit volume of resin regeneration agent is used, the unit is kg/m3 (resin) or g / L (resin). Another indicator is a commonly used regenerant consumption ratio, which refers to the amount of regenerated catalyst into and the obtained resin exchange capacity ratio. There is also a notation that regenerant consumption, is expected to obtain the desired pure exchange capacity units regeneration dose units g / mol. Theoretically 1mol soft resin regenerant 1mol should enable exchange resin exchange capacity of recovery, but in fact the reaction can only be recycled to the ion exchange equilibrium chemical reactions, only a theoretical amount of the recycled resin regenerant, and can not fully recover their capacity to pay, so the amount must be more than the theoretical amount. Increase the amount of regenerant can improve the degree of resin regeneration, the regenerated catalyst to a certain extent than the consumption, the regenerative degree of increase is not obvious. Renewable dosage and nature of the ion-exchange resin, resin generally strongly desired dosage over a weak recycled resin. Different reproduction mode, the amount of regenerant are different, the general current regeneration than the amount of regenerated catalyst countercurrent regeneration. Increase the amount of regenerant can improve the degree of resin regeneration, the regenerated catalyst to a certain extent than the consumption, the regenerative degree of increase is not obvious. Renewable dosage and nature of the ion-exchange resin, resin generally strongly desired dosage over a weak recycled resin. Different reproduction mode, the amount of regenerant are different, the general current regeneration than the amount of regenerated catalyst countercurrent regeneration.