There are three major parts in the water softener: control valve, resin tank, and salt storage tank (the three most important)

There are generally three working principles of water softeners:
(1) One is the ion exchange method, which is commonly referred to as the resin water softener. The resin tank is controlled to exchange calcium and magnesium ions in the water through a control valve, and the salt storage tank is used to restore the adsorption capacity of the resin, thereby reducing the hardness of the water by recycling. Although it can plug in electricity and costs salt and water, it has a good softening effect and low cost, which is very suitable for popular households.

(2) The second type is nanocrystalline technology, that is, salt-free water softener. This is a physical method. The crystal is dissolved in water, thereby inhibiting the formation of scale. It does not need to be plugged in or consumes water and does not require salt. The cost is nearly a hundred times that of resin, and the softened water is not "soft water" in the true sense. Although environmentally friendly, it is expensive and not suitable for household use.

(3) The third type is the softening of silicon-phosphorus crystals. It uses the soluble properties of silicon-phosphorus crystals and calcium and magnesium ions to inhibit rust and scale problems by producing a pipeline protective film. It can also be harmful to the human body under certain conditions. It is generally used for Industrial, not recommended for household use.

Now the first type of resin water softener is widely used in homes, the second type and the third type can not be regarded as a real water softener, and it does not completely turn water into soft water.
high efficiency water softener