Principle of ro reverse osmosis equipment reverse osmosis membrane.

The same volume of dilute solution and concentrated solution are placed on both sides of a vessel with a semi-permeable membrane in the middle. The solvent in the dilute solution will naturally permeate the semi-permeable membrane and flow to the concentrated solution side. It will be a certain height higher than the level of the solution, creating a pressure difference to reach a state of osmotic equilibrium. This pressure difference is the osmotic pressure. The magnitude of the osmotic pressure depends on the type, concentration and temperature of the concentrated solution and the nature of the semipermeable membrane.

If a pressure greater than the osmotic pressure is applied to the side of the concentrated solution, the solvent in the concentrated solution will flow into the dilute solution. This solvent flow is in the opposite direction of the original permeate. This process is called reverse osmosis.

Through the reverse osmosis process, water can flow from a highly concentrated solution to a less concentrated solution. Since inorganic ions, colloidal substances and macromolecular solutions cannot pass through the reverse osmosis membrane, in our process we leave the unwanted substances at the end of the solution and keep the high concentration, while the low concentration at the end is the pure liquid obtained.

Technology used in ro reverse osmosis plants.

Current treatment methods mainly include activated carbon adsorption, ozone treatment and membrane separation. Microfiltration and ultrafiltration in membrane separation cannot remove various low molecular substances.

The water purifier uses water purification reverse osmosis technology. Reverse osmosis membrane can intercept various inorganic ions, colloidal substances and macromolecular solutes in water, thus obtaining pure water. It can also be used for pre-concentration of high molecular organic solutions. It has grown rapidly over the past 20 years due to its simple reverse osmosis process and low energy consumption. It has been widely used in seawater and brackish water desalination, boiler water softening and wastewater treatment, and combined with ion exchange to produce high purity water. Its applications are now expanding and have been used for the concentration of dairy products and fruit juices as well as biochemical and biological preparations.

Causes of wastewater discharge from ro reverse osmosis plants.

The core component of a water purifier, the reverse osmosis membrane, is actually the process of concentrating the liquid. As water flows over the surface of the reverse osmosis membrane, the salt content of the water increases and the osmotic pressure of the water also increases. When the osmotic pressure increases to the pressure of the booster pump, the water cannot flow through the reverse osmosis membrane to the pure water end. As the concentration of minerals such as water continues to increase, some minerals will accumulate on the surface of the reverse osmosis membrane and block the pores of the membrane, resulting in a decrease in the water production of the reverse osmosis membrane and a decrease in the desalination capacity Rate. The above phenomenon should be avoided during the operation of the water purifier, so all the reverse osmosis membranes in use should have a certain ratio that can convert the incoming water into produced water, which is called "recovery rate".

In a reverse osmosis system, a high water yield means that the reverse osmosis membrane system has a higher recovery rate. Usually we can increase the recovery rate of a system by adding reverse osmosis in series, but home water filters usually use only reverse osmosis membranes, which means that almost all water filters on the market today have the same reasonable system recovery rate. Anything above that reasonable value is an unreasonable product, at the cost of shortening the life of the reverse osmosis membrane. A more reasonable and economical recovery rate is currently 30%.