Working principle:

The hardness of water is mainly composed of cations such as calcium (Ca2+) and 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 by the sodium ions in the resin. The resin adsorbs the calcium and magnesium ions, and the sodium ions enter the water. In this way, the water flowing out of the exchanger is softened water without hardness ions. As the exchange process continues, all Na+ions in the resin are removed and the exchange function is lost. At this time, NaCl solution must be used to regenerate the resin, replacing the Ca2+and Mg2+adsorbed by the resin. The resin re adsorbs sodium ions and restores its softening exchange ability.

Purpose:

Mainly used for industrial and civilian softened water preparation, such as boiler feedwater, air conditioning system makeup water, heat exchangers, power plants, chemical, textile, biopharmaceutical, electronic, and pure water system pretreatment.

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 various links in 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 a jet type salt suction instead of a salt pump, reducing energy consumption.

4. The equipment has a compact structure, occupies a small area, saves infrastructure investment, is easy to install and debug, and is easy to use and operate.

Operation steps of water softener:

a. Sodium ion exchanger operation (working)

Under a certain pressure (0.2-0.6mpa) and flow rate, the raw water enters the container (resin tank) containing ion exchange resin through the controller valve chamber. The Na+contained in the resin exchanges with the cations (Ca2+, Mg2+, Fe2+, etc.) in the water, so that the Ca2+and Mg2+ion content in the effluent of the container reaches the predetermined requirements, achieving the softening of hard water.

b. Sodium ion exchanger backwash

After resin failure, backwash with water from bottom to top before regeneration. The purpose of backwashing is twofold. Firstly, by backwashing, the tightly compressed resin layer during operation is loosened, which is beneficial for the resin particles to fully contact with the regeneration solution; One is to discharge the suspended solids and broken resin accumulated on the surface of the resin with the backwash water, so that the water flow resistance of the exchanger will not increase.

c. Sodium ion exchanger regeneration and salt absorption

The regenerated salt solution flows through the failed resin layer at a certain concentration and flow rate to restore its original exchange capacity.

d. Sodium ion exchanger replacement (slow cleaning)

After the regeneration solution is completed, if there is still salt solution in the exchanger that has not participated in the regeneration exchange, clean it with clean water at a flow rate less than or equal to the regeneration solution flow rate (slow cleaning) to fully utilize the regeneration effect of the salt solution and reduce the load of the washing process.

e. The purpose of sodium ion exchanger forward cleaning (rapid cleaning) is to remove residual regenerated waste liquid in the resin layer, usually cleaned at normal flow rate until the effluent is qualified.

f. Inject the required amount of salt water into the regenerant tank for one regeneration of the solution.

g. Ion exchange system operation

Equipment technical specifications and operating conditions requirements:

1. Raw water hardness: ≤ 6mmol/l

2. Raw water turbidity: meets the national standard for tap water

3. Water hardness: ≤ 0.03mmol/l (in accordance with GB1756-1996 standard)

4. Inlet pressure: 0.2-0.6mpa

5. Working temperature: 2 ℃ -50 ℃

6. Layout method: Single tank or multi tank parallel connection

7. Power supply: 220V, 50Hz

8. Control mode: fully automatic program control

9. Power consumption: 3~125w