Working principle of water softener


Working principle of water softener: The hardness of water is mainly composed of cations: calcium (Ca2+), magnesium (Mg2+) ions. When the raw water containing hardness ions passes through the resin layer of the exchanger, the calcium and magnesium ions in the water are replaced with the sodium ions in the resin, the resin absorbs the calcium and magnesium ions and the sodium ions enter the water, so the water flowing out of the exchanger is Demineralized water from which hardness ions have been removed. As the exchange process continues, the exchange function will be lost after all the Na+ in the resin is removed. At this time, the Nacl solution must be used to regenerate the resin to replace the Ca2+ and Mg2+ adsorbed by the resin, and the resin has re-adsorbed sodium ions. Restored soft swap ability.

Water Softener Application: It is mainly used for the preparation of industrial and civil softened water, such as boiler feed water, air conditioning system make-up water, heat exchanger, power plant, chemical industry, textile, biopharmaceutical, electronics and pretreatment of pure water system. Equipment features: 1. High degree of automation and stable water supply conditions. 2. Advanced program control device, accurate and reliable operation, replaces manual operation, and fully realizes automatic conversion of all links of water treatment.

3. High efficiency, low energy consumption, and economical operating costs. Due to the reasonable overall design of the water softener, the exchange capacity of the resin can be fully utilized. The equipment adopts jet-type salt suction instead of the salt pump, which reduces energy consumption. 4. The equipment has a compact structure and a small footprint, which saves infrastructure investment. It is easy to install and debug, easy to use and easy to operate.

Working steps: 1. Operation: The raw water flows through the container (softener) equipped with ion exchange resin under a certain pressure and flow rate. The Na+ contained in the resin is replaced with Ca2+, Mg2+, Fe2+, ... and other cations in the raw water, so that the contents of Ca2+ and Mg2+ in the container effluent meet the requirements of softened water. 2. Backwashing: After the replacement amount of the resin reaches saturation, backwash with water from bottom to top before regeneration. The purpose of backwashing is twofold. One is to loosen the compressed resin layer during operation through backwashing, which is beneficial to the resin The particles are in full contact with the regeneration solution, and the second is to remove the suspended solids accumulated on the resin surface during operation and the suspended solids on the resin surface. At the same time, some broken resin particles can also be discharged with the backwash water.

In this way, the water flow resistance of the exchanger will not become larger and larger. 3. Salt absorption: The saturated brine in the brine box enters the softener through the salt pipe under the siphon action of the internal water flow of the controller and mixes with the resin. The Na+ in the brine is replaced by the Mg2+ and Fe2+ adsorbed by the resin, thereby reducing the resin The displaced Mg2+ and Fe2+ will flow into the sewer with the equipment sewage 4. Replacement After the saturated brine is absorbed, there is still salt solution in the expansion space of the exchanger and the resin layer that has not yet participated in the regeneration exchange. Clean water is mixed with regeneration solution. 5. The purpose of positive washing is to remove the residual regeneration waste liquid in the resin layer, usually at the normal operating flow rate until the effluent is qualified.

6. Supplement water to the salt tank Inject the water required for dissolving and regenerating the salt into the salt tank. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..

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