Reverse osmosis (RO) is an important part of membrane separation technology. Reverse osmosis is the reverse migration movement of osmosis, which is a separation method to separate the solute from the solvent in the solution by means of the selective interception of the semi-permeable membrane under pressure. Reverse osmosis technology is widely used in the purification and concentration of various liquids, among which the most common application example is in the water treatment process, the use of reverse osmosis technology to remove inorganic ions, bacteria, viruses, organic matter and colloids in raw water to obtain high-quality pure water. Due to the advantages of high water quality, low operating cost, no pollution, convenient operation and reliable operation, it has become an energy-saving and simple technology for desalination of seawater and brackish water and preparation of pure water.
At present, reverse osmosis technology has become the preferred water treatment technology in modern industry, and is widely used in many industries such as medicine, electronics, chemicals, food, and seawater desalination.