Freshwater resources on the earth are very scarce, and seawater accounts for about 96.5% of the total water on the earth. With this advantage alone, the seawater desalination industry has been labeled as a golden age, and the infinite prospects of seawater desalination can be foreseen. Even so, the development of seawater desalination is likened to a difficult industry, not only because of the high energy consumption of seawater desalination, but also the high cost has become one of the bottlenecks in the promotion of seawater. How to solve the high cost while "turning" seawater into drinking water?
Desalination, also known as seawater desalination, is the process of separating salt and water in seawater. That is, taking water from seawater or removing salt in seawater can achieve the purpose of desalination. Technically speaking, seawater desalination is relatively mature and can transform seawater into freshwater on a large scale. In recent years, membrane technology has developed rapidly. As a high-efficiency and energy-saving technology, reverse osmosis, especially in seawater desalination
, has shown its extensive economic and social benefits, as well as environmental protection and energy saving characteristics.
Reverse osmosis technology is to separate the water (solvent) and ions (or small molecules) in the feed, so as to achieve the purpose of purification and concentration. The process has no phase change, generally does not need heating, the process is simple, the energy consumption is low, and the operation is convenient. The seawater desalination equipment uses reverse osmosis technology to realize the increase of water resources utilization, and uses semi-permeable membranes to separate fresh water and salt. It is suitable for the treatment of seawater and high-concentration brackish water.
With the growth of the world's population and the rapid development of the economy and society, the global water crisis continues to intensify, and seawater desalination is playing an increasingly important role in solving the global water shortage problem. The huge water gap is a new opportunity and a heavier responsibility for the desalination industry.