Freezing method, that is, freezing seawater to make it freeze, separates salt while liquid seawater becomes solid ice. Both freezing method and distillation method have insurmountable shortcomings, in which distillation method consumes a lot of energy and produces a lot of scale in the instrument, but not much fresh water; Freezing also consumes a lot of energy, but the fresh water obtained is not delicious and difficult to use.

2, distillation method

Seawater desalination is the main factor affecting the evaporation and freezing speed of seawater.

The steam in the process of seawater desalination condenses in the evaporation crystallizer, which not only precipitates ice crystals from seawater, but also produces a lot of steam. These vapors must be removed in time to make the seawater evaporate and freeze continuously.

Main uses of seawater desalination

Seawater desalination is the production of fresh water by seawater desalination. It is an open source incremental technology to realize the utilization of water resources, which can increase the total amount of fresh water and is not affected by time, space and climate. The water quality is good and the price is gradually reasonable, which can ensure the stable water supply for coastal residents' drinking water and industrial boilers. The process of obtaining fresh water from seawater is called seawater desalination.

Seawater desalination is mainly used to provide drinking water and agricultural water, and sometimes edible salt is by-product. Seawater desalination is very popular in the Middle East and is also used on some islands and ships.

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