Demineralized water equipment

Principle of demineralized water:

Ion exchange resin is a polymer with corresponding functional groups. In general, conventional sodium ion exchange resins carry large amounts of sodium ions.

When the content of calcium and magnesium ions in the water is high, the ion exchange resin can release sodium ions, and the functional group is combined with the calcium and magnesium ions, so that the content of calcium and magnesium ions in the water is reduced and the hardness of the water is reduced. Hard water becomes soft water, which is the working process of water softening equipment.

When a large number of functional groups on the resin are combined with calcium and magnesium ions, the softening ability of the resin decreases, and sodium chloride solution can be used to flow through the resin. At this time, the sodium ion content in the solution is high, and the functional groups will release calcium and magnesium ions Combined with sodium ions, the resin restores its exchange capacity. This process is called “regeneration”.

Due to the needs of actual work, the standard work flow of demineralized water equipment mainly includes:

Five processes: work (sometimes called water production), backwashing, salt absorption (regeneration), slow flushing (water injection), and quick flushing. All the processes of different demineralized water equipment are very close, but there may be some additional processes due to different actual processes or control needs. Any demineralized water equipment based on sodium ion exchange is developed on the basis of these five processes (among them, fully automatic demineralized water equipment will increase the brine reinjection process).

Application range:

Industrial boiler water supply and chemical process water. It is widely used in the preparation of various industrial and civilian softened water, such as boiler water supply, supplementary water for heating and air conditioning systems, textile printing and dyeing, paper making, laundry, bathing, food processing, high-quality domestic water and other fields.