Reverse osmosis membranes are artificial semi-permeable membranes with certain characteristics, which are made by simulating biological semi-permeable membranes and are the core components of reverse osmosis technology.
The principle of reverse osmosis technology is that under the action of a pressure higher than the osmotic pressure of the solution, other substances cannot pass through the semi-permeable membrane, thereby separating these substances from water.
The pore size of reverse osmosis membranes is very small, so they can effectively remove dissolved salts, colloids, microorganisms, organic matter and other substances in water.
The system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.
Reverse osmosis membranes can retain various inorganic ions, colloidal substances and macromolecular solutes in water, thereby obtaining purified water. It can also be used for the pre-concentration of large-molecule organic solutions.
Due to its simple process and low energy consumption, reverse osmosis has developed rapidly in the past 20 years. It has now been widely applied in seawater desalination, brackish water desalination, boiler water softening and wastewater treatment, and combined with ion exchange to produce high-purity water. Its application scope is expanding and it has begun to be used in the concentration of dairy products and fruit juices, as well as in the separation and concentration of biochemical and biological preparations.
