When the water softening equipment (water softener) is in operation, it displaces the vast majority of calcium and magnesium ions in the source water. Under a certain pressure and flow rate, the source water flows through the water softening equipment (water softener) filled with ion exchange resin, which contains exchangeable ionsNa+With cations in water(Ca2+,Mg2+,Fe2+Such as)Carry out ion exchange to remove water from the containerCa2+,Mg2+The ion content is greatly reduced, and the water that flows out is softened water with extremely low hardness.

There are many factors that affect the softening effect, and resin is an important one among them. Among resins, the exchange capacity is a factor that cannot be ignored. The exchange capacity of resin refers to the number of grams (or grams equivalent) of anions and cations that can be exchanged by the exchange groups in a unit volume or weight of resin, which is a measure of the resin's exchange capacity. Now let's talk about the influencing factors of the exchange capacity of softening resin.

1.Resin

The exchange capacity provided by different resins varies. Generally, the crosslinking degree of the resin required for boiler water softeners should not be lower than7.

2.The contact time between water and resin

The longer the contact time between water and resin, the more thorough the exchange, but the water production capacity per unit resin decreases relatively. The shorter the contact time, the more thorough the exchange, the lower the exchange capacity per unit resin, while the water production capacity per unit resin increases. Therefore, a reasonable connection time is of great significance for the economic operation of the softener.

3.The height of the resin layer

The lower the resin layer is, the greater the impact of flow rate on its exchange capacity will be. When the height of the resin layer reaches30Feet762mmAt that time, the influence of the flow rate caused by the height of the resin layer on its exchange capacity can be reduced to a relatively low level. Therefore, it is generally recommended that the height of the resin layer be greater than30Feet762mm) 

4.Flow velocity

Generally, the higher the flow rate, the larger the working layer required for ion exchange, and the effective utilization rate of the resin will decrease, but the water production capacity of the equipment will increase. Conversely, the lower the flow rate, the fewer working layers are required, the resin utilization rate increases, but the water production capacity of the equipment decreases. Too low a flow rate will cause the raw water to only exchange ions with the surface of the resin, and water cannot enter the interior of the resin.

5.The salt content of the influent

The salt content of the influent directly affects the quality of the effluent, and among the salt content of the influentK+,Na+The total content has a very significant impact on the quality of the effluent.

6.Temperature

An increase in water temperature can simultaneously accelerate internal diffusion and enhance exchange capacity. Whether in operation or regeneration, appropriately raising the water temperature is beneficial to the water softener.

7.The quality of the regenerant and the flow rate and concentration of the regenerant have an impact

The higher the purity of the regenerant, the better the resin regeneration effect, and the better the resin exchange capacity is restored. The concentration of the regenerant is generally around10%Left and right are better.

The above are the influencing factors of the softening resin exchange capacity in water softening equipment (water softener). If you encounter any problems in water softening treatment, please consult Beijing Yuanlai Water Treatment Equipment Co., LTD.15With years of focus on the water treatment industry, you can trust us!