Electronic water softening equipment

Brief Introduction to Softening Water Equipmentbetween

What is the hardness of water

In daily life, we often see the formation of scale on the inner wall of a kettle after prolonged use. What is the reason for this? Originally, the water we used contained many inorganic salts, such as calcium and magnesium salts. These salts cannot be detected by the naked eye in water at room temperature. Once they are heated and boiled, many calcium and magnesium salts precipitate as carbonates, and they adhere tightly to the pot wall to form scale. We usually use the content of calcium and magnesium ions in water“hardness”This indicator is used to represent. A hardness of 1 degree is equivalent to 10 milligrams of calcium oxide per liter of water. Water below 8 degrees is called soft water, water above 17 degrees is called hard water, and water between 8 and 17 degrees is called moderately hard water. Rain, snow, rivers, lakes are all soft water, while spring water, deep well water, and seawater are hard water.(The standard used in industry generally refers to water with a hardness of less than 1 as soft water, water between 1-10 is often referred to as hard water, and water with a hardness greater than 10 is often referred to as high hardness water.)Some water with high calcium and magnesium ion content does not show scale formation because these calcium and magnesium ions exist in the form of chloride salts, which are soluble and cannot precipitate out when heated.
The hazards of excessive hardness

The hardness of water has a significant impact on daily life. When the hardness of water is high, washing clothes does not produce bubbles; Living in a different place may result in symptoms of discomfort due to the hardness of drinking water; The accumulation of scale inside the pot will decrease its thermal conductivity; Scale on industrial boilers can cause explosion accidents. Therefore, the hardness of water should be appropriately controlled for both domestic and industrial use. Drinking hard water regularly can easily lead to kidney stones.

Resin softening principle

water hardnessMainly composed of cations: calciumComposed of Ca2+and Mg2+ions. When raw water containing hardness passes through the resin layer of the exchanger, calcium and magnesium ions in the water are adsorbed by the resin, while sodium ions are released. In this way, the water flowing out of the exchanger is softened water without hardness ions. When the resin adsorbs calcium and magnesium ions to a certain saturation level, the hardness of the effluent increases. At this timewater softenerThe regeneration of failed resin will be automatically carried out according to the predetermined program, using a higher concentration of sodium chloride solutionSalt water is used to restore the failed resin to sodium type resin through resin.

Due to the fact that the hardness of water is mainly formed and expressed by calcium and magnesium, cation exchange resins (water softeners) are generally used to replace Ca2+and Mg2+(the main components that form scale) in water. As the Ca2+and Mg2+in the resin increase, the efficiency of removing Ca2+and Mg2+gradually decreases.

After the resin absorbs a certain amount of calcium and magnesium ions, it must be regenerated. The regeneration process is to rinse the resin layer with saline solution in the salt tank, replacing the hardness ions on the resin. The resin is then discharged from the tank with the regeneration waste liquid, and the softening exchange function of the resin is restored.

Due to the fact that the hardness of water is mainly formed by calcium and magnesium, the principle of sodium ion exchange softening treatment is to pass the raw water through a sodium type cation exchange resin, allowing the hardness components Ca2+and Mg2+in the water to exchange with Na+in the resin, thereby adsorbing Ca2+and Mg2+in the water and softening the water.
Softening water equipment can be widely used for softening the supply water of systems such as steam boilers, hot water boilers, exchangers, evaporative condensers, air conditioners, and direct fired engines. It can also be used for the treatment of domestic water in hotels, restaurants, office buildings, apartments, homes, and other industries, as well as for the treatment of softened water in food, beverage, brewing, laundry, printing and dyeing, chemical, pharmaceutical and other industries