More to learn about reverse osmosis technology.

Return to site

More to learn about reverse osmosis technology.

· lifestyle

penetration and osmotic pressure
penetration phenomenon is common in nature, such as a cucumber into the salt water, cucumber will be smaller due to water loss. Cucumber water moleculesinto the brine solution is the process of infiltration. If a pool is partitioned into two parts by a membrane that only water molecules can penetrate, pure water and salt water are injected to the same height on both sides of the membrane. After a while, it can be found that the level of pure water is reduced, while the level of salt water is raised.
The phenomenon that we migrate water molecules through this membrane into salt water is called infiltration. The elevation of the liquid level of the salt water is not endless, and it will reach a balance point when it reaches a certain height. At this time diaphragm pressure across the surface represented by the pressure is called the osmotic pressure. The size of the osmotic pressure is directly related to the concentration of the brine.

Reverse osmosis and reverse osmosis water purification technology
After the above devices have reached equilibrium, if a certain pressure is exerted on the brine surface, the water molecules will migrate from the brine end to the pure water end. The phenomenon in which solvent molecules migrate from dilute solution to concentrated solution under pressure is called reverse osmosis. If salt is added to one end of the above facility and pressure is applied at that end that exceeds the osmotic pressure of the brine, we can get pure water on the other end. This is the principle of reverse osmosis water purification.

Reverse osmosis facilities, the key to the production of pure water are two, one is a selective membrane, we call semi-permeable membrane, the second is a certain amount of pressure. Simply put, there are many holes in the reverse osmosis semipermeable membrane. The size of these pores is comparable to the size of water molecules.

Since bacteria, viruses, most organic pollutants and hydrated ions are much larger than water molecules, they cannot be penetrated. Reverse osmosis semipermeable membrane and the reverse osmosis membrane through the water phase separation. Among many kinds of impurities in water, soluble salts are the most difficult to remove, but can be remove by using water purification pitchers .

Therefore, the effect of reverse osmosis water purification is often determined according to the level of salt removal. The level of reverse osmosis salt removal is mainly determined by the choice of reverse osmosis membranes. Sex. Currently, the more selective reverse osmosis membrane element desalination rate can be as high as 99.7%.