Introduction of RO reverse osmosis membrane and the advantages of reverse osmosis membrane

RO reverse osmosis membrane is a semi-permeable membrane for preparing pure water in reverse osmosis process.

Generally made of polymer materials. Such as cellulose acetate film, aromatic polyhydrazide film, aromatic polyamide film. The diameter of the surface pores is generally between 0.5 and 10 nm, and the permeability is related to the chemical structure of the membrane itself. Some polymer materials have good repellency to salt, but the permeation speed of water is not good. The chemical structure of some polymer materials has more hydrophilic groups, so the permeation speed of water is relatively fast. Therefore, a satisfactory reverse osmosis membrane should have an appropriate amount of permeation or salt rejection.

The reverse osmosis membrane should have the following characteristics:

1. it should have high-efficiency salt rejection at high flow rates;
2. it should have high mechanical strength and service life;
3. it can function at lower operating pressures;
4. it can It is resistant to chemical or biochemical effects;
5. it is less affected by factors such as pH value and temperature;
6. the source of film-making raw materials is easy, the processing is simple, and the cost is low.

There are two types of reverse osmosis membranes: asymmetric membranes and composite membranes. The currently used membrane materials are mainly triacetate cellulose and aromatic polyamides. Its components are hollow fiber, coil, plate and frame and tubular. It can be used for chemical unit operations such as separation, concentration and purification, and is mainly used in pure water preparation and water treatment industries.

There are two types of reverse osmosis membranes: asymmetric membranes and composite membranes. The currently used membrane materials are mainly triacetate cellulose and aromatic polyamides. Its components are hollow fiber, coil, plate and frame and tubular. It can be used for chemical unit operations such as separation, concentration and purification, and is mainly used in pure water preparation and water treatment industries.

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.

Further reading：

• How reverse osmosis membranes work？
• The reverse osmosis membrane should have the following six characteristics?
• Introduction to reverse osmosis: introduction to the characteristics of reverse osmosis membranes and ultrafiltration membranes
• Technical standard analysis of reverse osmosis membrane performance
• Reverse osmosis water treatment equipment: what is the standard desalination rate, actual desalination rate and system desalination rate of reverse osmosis membrane elements?
• Answers to questions about reverse osmosis equipment and reverse osmosis membranes (21~30)
• Answers to questions about reverse osmosis equipment and reverse osmosis membranes (11~20)
• Answers to questions about reverse osmosis equipment and reverse osmosis membranes (1~10)
• Introduction to the advantages of reverse osmosis membranes
• Chiwatec industrial reverse osmosis membrane separation technology characteristics introduction
• Fouling composition of reverse osmosis membrane
• Reverse osmosis membrane pollutants and dirt components
• Evaluation index and influencing factors of reverse osmosis membrane
• Common pollutants in reverse osmosis membrane and their removal methods
• How to prevent fouling of reverse osmosis membrane
• What is the back pressure of reverse osmosis water treatment and the standard desalination rate of reverse osmosis membrane elements
• Common pollutants of reverse osmosis membrane and its removal method
• 8040 reverse osmosis membrane