Reverse osmosis membrane is also called ro membrane, reverse osmosis membrane is used for water treatment separation membrane, with ultrafiltration membrane and other membranes, are the same as the water through the membrane area of the surface of the aperture, and then the impurities and viruses and other substances to be retained, the water molecules through the surface of the filter membrane, to achieve the effect of filtration. Reverse osmosis membrane is called reverse osmosis, because the reverse osmosis membrane through the principle of reverse osmosis (reverse osmosis) separation, with the pressure difference as the driving force, from the solution to separate the solvent, the material on the side of the membrane to apply pressure, when the pressure exceeds the osmotic pressure of it, the solvent will be against the direction of the natural osmosis for reverse osmosis. Thus in the low-pressure side of the membrane to get through the solvent, that is, permeate; high-pressure side to get concentrated solution, that is, concentrate. If the reverse osmosis treatment of seawater, the low-pressure side of the membrane to get fresh water, in the high-pressure side to get brine.
What is the separation principle of reverse osmosis membrane operation?Reverse osmosis membrane work with the help of external pressure on the membrane side of the solution, when this pressure exceeds its osmotic pressure, the solvent will reverse the direction of natural osmosis for reverse osmosis, under the action of the pressure of the reverse osmosis membrane membrane pore is only 0.0001 micrometers, some impurities molecules, chemical ions, and bacteria, fungi, viruses and so on can not be passed, will remain in the concentrated solution side of the solvent, and then discharged. Thus, the low-pressure side of the membrane can get a clean solution, that is, permeate solution. The high pressure side gets the concentrated solution, which is the concentrated solution. If used in the desalination industry, the low-pressure side of the membrane can get fresh water, the high-pressure side of the brine, due to the reverse osmosis membrane is simple to use, good filtration effect, so it is widely used in the water treatment industry.