Wholesale supply of macroporous ion exchange resin

Wholesale supply of macroporous ion exchange resin
1、 Product Introduction:
D418 is a styrene divinylbenzene copolymer with a weakly acidic amino phosphonic acid group (- CH) on a special macroporous structure₂NHCH₂PO₃-Chelating resin. This product can fix or chelate one or several specific cations over a wide range, even from high concentration solutions. Mainly used for the separation and recovery of heavy metal ions, especially suitable for the secondary refining of salt water in the production process of ion exchange membrane alkali, using the penetration of calcium and magnesium ions as the control standard, with high selectivity for calcium and magnesium.

2、 Physical and chemical performance indicators:

Wholesale supply of macroporous ion exchange resin
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How to use resin for water softening/

Softened water resins are generally divided into two types: cationic resins and anionic resins. As the name suggests, the two resins are used to adsorb (exchange) cations such as Ca and Mg and anions such as NO3 and SO4 ions in water. The alkalinity of water treated with cations and the acidity of water treated with anions are related to their different adsorption of ions. The two types of resins are essentially indistinguishable in appearance, both appearing as yellow brown particles that are slightly larger and lighter than millet grains.

Softened water resin

In the chemical water production workshop of the power plant, after passing through the cation bed (filled with cation resin) and anion bed (anion resin), the hardness can reach zero, and the conductivity is also very low, which is called softened water. The so-called Yin bed and Yang bed are essentially a large tank, where hard water is turned into soft water through the resin inside the tank. Because the water passing through has a certain pressure and flow rate, the resin is churning in the tank. Therefore, in some places, this type of tank is also called a "boiling bed", which refers to a type of thing. The process of making purified water in a factory is roughly the same, but the purified water still needs to be treated. The cost of large-scale production of softened water is not high.

Softened water resin

Cationic and anionic resins can be reused through regeneration. In order to ensure the quality of desalinated water, power plants generally adopt a regular regeneration method, rather than waiting until its effectiveness decreases before proceeding with regeneration. Generally speaking, about once every two weeks. Regenerated resin can be treated with salt water, but it is generally no longer necessary as its effectiveness cannot be achieved by other methods. Cationic resins are generally regenerated using acid, preferably sulfuric acid, while anionic resins are regenerated using alkali, preferably *.

After knowing the production process of the factory, we can follow its method when using resin and miniaturize its system. The common method is to place anionic resin and cationic resin separately in different compartments of the external filter, because the external filter has good sealing performance and can also be considered for loose placement. This basically increases the contact area and time, fully utilizing the resin, which also reflects the effectiveness of the external filter. When using an upper filter, the resin can be wrapped in gauze like activated carbon, with one type of resin placed on top and another type of resin separated by a layer of filter cotton. The effect can also be achieved.

Softened water resin

Some people, in order to increase the ion softening effect, stir the resin particles in the container after passing through water (or at least with a certain flow rate), increasing the contact area and time. If conditions permit, they can try it out, and the effect is very good. There are several key points to such a device: first, there should be a water pump that generates a certain pressure; second, there should be two cans the size of Coca Cola bottles, with pipes connected to both ends; third, there should be filters at both ends of the cans to prevent resin particle loss; fourth, the order and amount of resin should be appropriate.

As a medium for ion exchange, it indeed satisfies the law of conservation of capacity exchange very well.