Membrane technology for seawater desalination mainly includes reverse osmosis, electroosmosis and membrane distillation. The desalination rate of the reverse osmosis membrane for seawater desalination is as high as 99.6%. The emergence and development of reverse osmosis technology has greatly reduced the cost of seawater desalination.Now reverse osmosis has become the most economical means of desalination to obtain drinking water. This technology has the following advantages:  

      1. The application of membrane method to desalinate seawater is very mature; 

      2. The production technology of membrane materials and membrane components such as reverse osmosis is mature, the price is greatly reduced, and the application cost is lower and lower;