Osmosis is a physical phenomenon. When two solutions containing different salt concentrations are separated by a semi-permeable membrane, it will be found that the solvent on the side with less salt content will spontaneously flow to the side with high salt content. This process is called infiltration. The infiltration stops when the liquid level difference (ie the pressure difference) on both sides reaches a certain value, and the pressure difference at this time is called the osmotic pressure. The osmotic pressure is only related to the type of solution, salt concentration and temperature, but not to the semipermeable membrane. In general, the higher the salt concentration, the higher the osmotic pressure. In osmotic equilibrium, if a pressure is applied on the concentrated solution side, the solvent on the concentrated side will infiltrate to the fresh water side under the action of pressure. This infiltration is the opposite of natural infiltration, so it is called reverse osmosis (Reverse Osmosis). Using reverse osmosis technology, we can use pressure to separate the solute from the solvent.
The reverse osmosis water purification process refers to the process in which water molecules pass through the reverse osmosis membrane under pressure to separate them from impurities. Reverse osmosis membrane is the core of reverse osmosis technology.
The pure water output of reverse osmosis equipment is related to the temperature and salinity of the source water. Generally speaking, for every 1°C drop in temperature, yield drops by 3-4%, and for every 100ppm increase in salinity, yield drops by 0.5-1%.
Xi’an CHIWATEC Water Treatment Technology is a high-tech enterprise specialized in various water processing devices. Aside from these individual products, which cover a number of types and series, we can also help with related comprehensive engineering projects. Thanks to our hard work and dedication upon our founding, we are now one of the fastest-developing water treatment equipment manufacturers in Western China.