Seawater desalination is the use of seawater desalination to produce fresh water. It is an open source incremental technology that realizes the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. It can guarantee the stable supply of drinking water and supplementary water supply by industrial boilers for coastal residents.

The process of obtaining fresh water from sea water is called desalination. The seawater desalination methods currently used are seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and ammonium carbonate ion exchange method, and the current application of reverse osmosis membrane method and distillation method is the mainstream in the market.

There are more than one hundred scientific research institutions in more than ten countries in the world conducting research on seawater desalination, and hundreds of seawater desalination facilities with different structures and different capacities are working. A modern large-scale desalination plant can produce thousands, tens of thousands or even nearly one million tons of fresh water every day. The cost of water is constantly decreasing, and some countries have already reduced it to the price of tap water. The volume of desalinated water in some areas has reached the scale of national and urban water supply.

The main purpose
Seawater desalination is the use of seawater desalination to produce fresh water. It is an open source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time and space and climate. The water quality is good and the price is becoming more and more reasonable. It can guarantee the stable supply of drinking water and supplementary water supply by industrial boilers for coastal residents. The process of obtaining fresh water from sea water is called desalination.

Seawater desalination is mainly to provide drinking water and agricultural water. Sometimes edible salt is also produced as a by-product. Seawater desalination is very popular in the Middle East and is also used on certain islands and ships.

The accumulative seawater desalination capacity of the existing and upcoming projects in my country is about 600,000 tons per day. From the perspective of policy planning, the industry market capacity in the next ten years has more than five times the growth space, and the prospects are more optimistic. The cost of desalinated seawater has been reduced to 4-5 yuan/ton, and the economic feasibility has been greatly improved. Considering the cost reduction caused by future technological advances and supporting factors, the seawater desalination industry is expected to experience explosive growth in the future.

Key technology

The relationship between the efficiency of the key water desalination of seawater desalination and the environment and energy, no matter which method of evaluation index can not leave the environmental impact and energy consumption. The recovery rate of water is 35-55%, and the process of seawater desalination is also the process of seawater concentration. Therefore, if the yield of freshwater is increased, the enrichment of valuable elements in concentrated seawater will increase, providing good conditions for chemical resource recovery.