With the population gathering and rapid social and economic development brought about by urbanization, the water consumption for production, living and ecology has continued to increase, resulting in an increasingly scarce freshwater resource in the coastal areas of northern my country. At present, desalination is the main way to solve the shortage of fresh water resources. Achieving low energy consumption and environmental friendliness in seawater desalination is the core goal of the sustainable development of membrane desalination. The key to achieving this goal is closely related to the "membrane" in the desalination project.

 

　　The seawater desalination industry and the membrane manufacturing industry have developed relatively maturely, but there are also some urgent problems that need to be solved in the large-scale application process. It is understood that the membrane desalination process generally has unit operations such as pretreatment, reverse osmosis, and post-treatment systems. The Dow reverse osmosis system is the link to realize the separation of brine and the key to desalination.

 

The Dow seawater desalination special reverse osmosis membrane filters the salt in the seawater. The salt is collected on the concentrated water side and discharged with the concentrated water flow, leaving clean drinking water, which flows out through the water production pipeline for the next step of treatment. The reverse osmosis membrane has the characteristics of large flux and high water production. The membrane material used has certain characteristics of corrosion resistance, high pressure resistance, and pollution resistance to the "salt" in the seawater.

 

　　 reverse osmosis membrane can effectively remove harmful components such as inorganic salts, heavy metal ions, organic bacteria and germs in seawater, and desalinate seawater into high-quality water that meets national drinking water standards. The pretreatment of the whole system adopts advanced fully automatic multi-channel combination valve to realize the whole process of fully automatic large flow backwash and positive washing. The new shell is adopted, and the pipelines are all made of corrosion-resistant materials, ensuring the durability of the complete system.

 

　　 Dow reverse osmosis seawater desalination technology has the characteristics of high desalination rate, corrosion resistance, high pressure resistance, and pollution resistance. The salt content of the seawater after the reverse osmosis membrane treatment is greatly reduced. The water quality after desalination is even better than tap water, so that it can be used by industry, commerce, residents, ships, and naval vessels.