1、 Overview of cation exchanger
This product is currently an advanced and practical product in ion exchangers. It has changed the original fixed bed co current regeneration process to counter current regeneration and is designed for non top pressure regeneration, which not only saves losses but also omits the gas source for the gas top. After treatment with a sodium ion exchanger, the total hardness of the water decreases to below 0.04 milliequivalents per liter. When treating water with high total hardness or requiring low effluent hardness, a two-stage series softening method can be used.

2、 Working principle
A certain height of sodium ion exchange resin is installed inside the sodium ion exchanger as the exchange agent. Raw water passes through the exchanger layer from top to bottom, and the sodium ions on the exchanger replace the calcium and magnesium ions in the raw water, causing the water to soften. The reaction is as follows:

Ca2++2NaR → CaR+2Na+
Mg2++2NaR → MgR+2Na+

The sodium ions on the exchange agent are gradually replaced by calcium and magnesium ions. After a period of use, calcium and magnesium ions will leak out. When the hardness of the effluent reaches the specified value, the operation will stop and regeneration will be carried out. During regeneration, 5-8% saline (or dilute hydrochloric acid) is passed through the exchanger layer from bottom to top. The sodium ions in the salt solution replace the calcium and magnesium ions on the exchange agent, regenerating the exchange agent and restoring its exchange capacity. The reaction is as follows:
CaR+2Na+→ Ca2++2NaR
MgR+2Na+→ Mg2++2NaR

Our factory produces three types of mixed ion exchangers: internal regeneration type, anion resin external regeneration type, and resin full external regeneration type. The equipment specifications are the same, but the connection methods are different. The Yin resin external regeneration type requires a Yin resin regenerator, while the resin full external regeneration type requires a Yang resin regenerator and a Yin resin regeneration and separator.

Ion exchange technology has a wide range of applications in the field of water treatment. As a sodium ion exchanger for water softening, it is mainly used for water treatment in medium and low pressure boilers. Ion exchange desalination equipment is mainly used for the preparation of pure water and high-purity water. Ion exchange equipment is suitable for many industrial sectors such as pharmaceuticals, chemicals, electronics, coatings, beverages, and high-pressure boiler feedwater. Compared with the reverse osmosis devices introduced in recent years, it has the ability to thoroughly remove ionic impurities; Low requirements for water pretreatment; Advantages such as low equipment cost. There is currently no substitute equipment for ion exchange technology in the preparation of high-purity water. When the total salt content of the inflow is below 400mg/l, the effluent quality should be between 1.0-0.2 μ s/cm according to different user requirements. If the total salt content of the incoming water is above 500mg/l, it can be combined with reverse osmosis with an electrodialysis device for desalination, and the effluent quality can also be improved. Our company produces large, medium, and small ion exchange equipment. Based on the inlet water quality and effluent requirements, we can provide users with individual engineering design, auxiliary equipment matching, installation and commissioning, formulate operating procedures, and train operators. Provide maintenance services at any time after production and provide lifelong technical support for the product.