Water softening equipment, as the name suggests to reduce the hardness of water equipment, mainly in addition to the removal of calcium and magnesium ions in the water, when the water is deep well water or the water hardness is very large, the use of softening water equipment is to remove the content of calcium and magnesium ions in the water and reduce the calcium and magnesium ions in the water. In the process of softening water, the water softening equipment can not reduce the total salt content in water. It is widely used in hot water boiler system, heat exchange system, industrial cooling system, central air conditioning system and other water use equipment system.

Basic principle

The main working principle of softened water equipment is to use anion and cation to soften. Let raw water pass through anion and cation converter to remove calcium, magnesium and sodium plasma in water.  The water that comes out is just water. There are no other molecules that can effectively prevent scale.

Workflow

The working process of softener consists of five steps: backwashing, salt absorption (regeneration), slow washing (replacement) and quick washing. All the processes of different softening water equipment are very close, but there may be some additional processes because of the actual process or the need for control. Any softened water equipment based on sodium ion exchange is developed on the basis of these five processes. Automatic softener running program:

A. operation (work)

The original water is under a certain pressure (0.2-0.6Mpa), flow, through the controller valve cavity, into the container containing the ion exchange resin (resin tank), the Na+ in the resin and the cation in the water (Ca2+, Mg2+, Fe2+... And so on, so that the content of Ca2+ and Mg2+ ions in the effluent of the container can meet the established requirements, and the hardness of hard water is softened.

B. backwash

After the resin fails, the water is washed from bottom to top before being recycled. The purpose of the backwash is two, one is through the backwash, the pressure of the resin layer in the operation is loose and the resin particles are in full contact with the regenerative liquid; the first is to make the suspended and broken resin accumulated on the surface of the resin to be discharged with the backwash water, so that the flow resistance of the exchanger will not become more and more large.

C. regenerative salt absorption

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

D. replacement (slow cleaning)

After the regenerative liquid is finished, there is still salt solution that is not involved in the regenerative exchange, and the clean water is cleaned (slow cleaning) with the flow velocity of the regenerated liquid (slow cleaning), so as to make full use of the regenerative effect of the salt liquid and reduce the load of the positive washing.

E. positive washing (quick cleaning)

The purpose is to remove the residual waste liquid from the resin layer, which is usually cleaned at normal flow rate until the effluent is qualified.

F. regenerator box water injection

Water is injected into the regenerator tank to regenerate the salt required at a time.