Strong acidic cation exchange resin*

Strong acidic cation exchange resin*Professional production: anion and cation exchange resin, macroporous adsorption resin, softened water resin, mixed bed MB resin, 18 megaohm ultra pure water polishing resin, wire cutting slow wire resin, sewage decolorization resin, electroplating wastewater nickel and chromium removal resin, iron, copper, phosphorus, boron, and heavy metal removal resin, acid recovery resin, chelating resin, food grade resin, alum extraction resin, gold absorption resin, silver extraction resin, strong acid, strong alkali, weak acid, weak alkali, with dozens of models including 001 × 7, 001 × 8, 732, 717, 201 × 7, 201 × 4, D001, D201, D301, D113, D101, H103, D403, D408, etc
1. Pre treatment of Yang resin

The pretreatment steps for cation resin are as follows:

Firstly, use saturated saline solution, which is approximately twice the volume of the treated resin. Soak the resin in the saline solution for 18-20 hours, then drain the saline solution and rinse with clean water to ensure that the discharged water does not turn yellow;

Next, use a 2% -4% NaOH solution with the same amount as above, soak in it for 2-4 hours (or clean with a small flow rate), drain the alkaline solution, and rinse the resin until the discharged water is close to neutral;

Afterwards, use a 5% HCl solution with the same amount as above, soak for 4-8 hours, drain the acid solution, and drift with clean water until neutral for later use.

2. Pre treatment of Yin Resin

The steps in its pretreatment method are the same as those in the cation resin pretreatment method; Then soak in 5% HCl for 4-8 hours, drain the acid solution, and wash with water until neutral; Then soak in a 2% -4% NaOH solution for 4-8 hours, drain the alkaline solution, and wash with clean water until neutral for later use.

Strong acidic cation exchange resin*The impact on the regeneration degree of ion exchange resin indicates that Jinda resin regeneration plays a crucial role in water treatment. There are several influencing factors, such as the purity and dosage of the rejuvenator. So we need to determine the optimal purity and dosage of the rejuvenator.
Jinda ion exchange resin
Purity of regenerant
It is generally believed that the regeneration effect of hydrochloric acid is better than that of sulfuric acid, and the cost of sulfuric acid regeneration is lower than that of hydrochloric acid. The high purity and low impurity content of the rejuvenator result in a higher degree of resin regeneration, especially affecting the softening of Jinda resin.
Jinda ion exchange resin
Regeneration agent dosage
The amount of regenerant used is an important factor affecting regeneration, and its concept is the amount of regenerant used per unit volume of resin, measured in kg/m3 or g/L. Another commonly used indicator is the specific consumption of regenerant, which refers to the ratio of the amount of regenerant input to the working exchange capacity of the obtained resin. Another expression is the consumption of regenerant, which is the estimated amount of pure regenerant required to obtain a unit of working exchange capacity, expressed in g/mol.
Increasing the dosage of regenerant can improve the regeneration degree of PUROLITE resin, but the improvement in regeneration degree is not significant after the specific consumption of regenerant increases to a certain extent. The amount of regenerant used is related to the properties of the ion exchange resin. Generally, strong resins require a higher amount of regenerant than weak resins. The amount of regenerant used varies depending on the regeneration method. Generally, the amount of regenerant used for co current regeneration is higher than that for counter current regeneration. When the softening resin regeneration method adopts parallel flow, the regeneration liquid first comes into contact with the upper * failed resin, so this part of the resin is regenerated well. When the regeneration solution flows down and comes into contact with the resin at the bottom of the exchanger, a large amount of displaced ions have accumulated in the regeneration solution, which seriously affects the regeneration degree of the exchange resin and prevents this part of the resin from being fully regenerated, affecting the effluent quality. If we want to improve the regeneration degree of this resin, we need to increase the amount of regenerant used.
Jinda ion exchange resin
When the regeneration method of Jinda resin adopts reverse flow, a high degree of regeneration can be achieved because the resin at the bottom of the exchanger is always in contact with fresh regeneration agent. During operation, the water comes into contact with this highly regenerated resin, ensuring the quality of the effluent water. When using countercurrent regeneration, although it first comes into contact with the inlet water, ion exchange can still be carried out due to the low ion content exchanged from the resin in the water, and the exchange capacity of this part of the resin can still be fully utilized. Therefore, improving the purity and dosage of Jinda softening water regeneration agent in this way is an important aspect that we must control well.
Explanation of the main reasons for the freezing of Jinda softened water resin Previous: The role and replacement techniques of Jinda softened water resin in the device

The utility model discloses an electroplating wastewater treatment device for treating heavy metals, comprising a comprehensive treatment tank. A cation resin tower, an anion resin tower, and a water collector are also arranged next to the comprehensive treatment tank. The cation resin tower, anion resin tower, water collector, and comprehensive treatment tank are sequentially connected in series through pipelines; The electroplating wastewater is collected by a water collector and transferred to a resin tower through pipelines. The adsorption capacity of the anion and cation exchange resin in the resin tower for heavy metals in the electroplating wastewater is used to purify the wastewater; The beneficial effect of this utility model is that heavy metals can be recovered and utilized through the reverse exchange reaction of the resin tower, while meeting the national heavy metal wastewater discharge standards.