Reverse osmosis pure water equipment, reverse osmosis equipment, pure water equipment, deionized reverse osmosis equipment
Release date: November 27, 2019 11:49:19
Basic principle of reverse osmosis
Reverse osmosis (RO) Osmosis) is a membrane separation technology developed in the 1960s, originated from American aerospace technology. Its principle is that the raw water passes through the reverse osmosis membrane under the action of high pressure, and the solvent in the water diffuses from high concentration to low concentration, so as to achieve the purpose of separation, purification and concentration. Because it is opposite to the permeation direction of nature, it is called reverse osmosis. Reverse osmosis can remove bacteria, viruses, colloids, organic matters and more than 98.6% of dissolved roots in water. Compared with other traditional water treatment methods, this method has obvious advantages, and is widely used in water treatment related industries.
Permeation is a physical phenomenon. When two solutions containing different concentrations of roots are separated by a semi permeable membrane, it will be found that the solvent on the side with less root content will spontaneously flow to the side with higher root content. This process is called infiltration. When the liquid level difference (i.e. pressure difference) on both sides reaches equilibrium, the infiltration stops, and the pressure difference at this time is called osmotic pressure. Osmotic pressure is only related to solution type, root concentration and temperature, but not to semipermeable membrane. Generally speaking, the higher the root concentration, the higher the osmotic pressure. On the contrary, if a pressure is applied on the concentrated solution side and exceeds the osmotic pressure, the solvent on the concentrated side will permeate to the fresh water side under the pressure. This penetration is called reverse osmosis because it is opposite to natural infiltration. Reverse osmosis membrane separation technology is a method of separating solute and solvent by using reverse osmosis principle.