The Principle Of Reverse Osmosis Pure Water Machine

A membrane that is selective for what is permeated becomes a semipermeable membrane. Generally, a membrane that can only permeate a solvent but not a solute is regarded as an ideal semipermeable membrane. When the same volume of dilute solution and concentrated solution are placed on both sides of a container, and the middle is blocked by a semi-permeable membrane, the solvent in the dilute solution will naturally pass through the semi-permeable membrane and flow to the concentrated solution side. The surface will be higher than the liquid level of the dilute solution by a certain height, forming a pressure difference and reaching a state of osmotic equilibrium. This pressure difference is the osmotic pressure. The size of the osmotic pressure depends on the type of dope, and the concentration and temperature have nothing to do with the properties of the semipermeable membrane. If a pressure greater than the osmotic pressure is applied on the concentrated solution side, the solvent in the concentrated solution will flow to the dilute solution, and the flow direction of this solvent is opposite to the original infiltration direction. This process is called reverse osmosis. The reverse osmosis pure water machine is a household drinking water equipment that has not appeared on the market for a long time, but its appearance has been praised by more and more consumers, especially by the users of the water dispenser, because it eliminates the need to buy a bucket The cost of filling water and the hassle of shipping bottled water. The normal operation of the reverse osmosis pure water machine depends on a certain pressure, which must be greater than the osmotic pressure of the osmotic membrane, generally 0.28MPa. In areas with unstable water pressure or water pressure, it is recommended to buy a pure water machine with a booster pump. Its working pressure can reach 0.6-0.9MPa, which is not limited by the tap water pressure, and has high water production efficiency, fast speed, and concentrated water discharge. The daily water output is about 130 liters, which can fully meet the daily water needs of the family.