In Earth's hydrosphere, 3% is freshwater and 97% is seawater. All of humanity relies on that limited freshwater resource to live. With the civilization of human society and economic development, water consumption is increasing day by day. On the other hand, human urbanization and industrialization have brought a lot of pollution to freshwater to varying degrees. The freshwater resources we depend on for survival are becoming increasingly insufficient and scarce. In addition to saving water and reducing water pollution to ensure that water resources do not become unbalanced and scarce, people are also vigorously developing freshwater resources, among which the most practical system is seawater desalination.
　　

With the continuous improvement of reverse osmosis technology, the system of using reverse osmosis membrane modules to desalinate seawater to extract fresh water has been maturely commercialized and is used in many regions around the world. There are many successful operating cases in municipal living water supply, sanitary flushing, industrial system cooling, production water, and other aspects.
　　

Equipment technology ：

Raw water--→Pre-treatment system for coarse filtration--→Ultrafiltration system microfiltration system--→Seawater reverse osmosis system--→Freshwater