Reverse osmosis filters

Reverse osmosis

— the presence of a purification system based on the phenomenon of reverse osmosis. With osmosis, filtration is carried out through a special membrane at the molecular level: the membrane passes water molecules while retaining other substances (the molecules of which are usually larger than those of water). The reverse is called the osmotic process, in which water moves through the membrane from a solution with a higher concentration of impurities to a solution with a lower concentration. This allows impurities to remain on one side of the membrane, allowing only pure water to pass through. The degree of osmotic purification is very high — suffice it to say that in this way you can even desalinate salt water. In addition, membranes have a good resource due to regular flushing — many times higher than other filter elements. The main disadvantage of this method can be called low productivity. It is caused not only by the slow operation of the membrane, but also by the fact that only about 40% of the water is purified — the rest serves as a "rubbish bin" for impurities and is drained into the sewer. In addition, high pressure is required for normal operation of osmosis. Therefore, this function is usually used where a high quality of cleaning is important and there is no question of large volumes — for example, in some filters under sink.