UF membrane technology: dual purification power of physical interception and electrostatic repulsion

In today's pursuit of high-quality water resources, water treatment technology is developing rapidly. Among them, UF membrane technology has become a shining pearl in the field of water treatment with its unique purification mechanism. The mechanism of UF membranes to remove impurities such as suspended solids, bacteria and viruses in water mainly relies on the two principles of physical interception and electrostatic repulsion. The synergistic effect of the two gives UF membranes excellent purification capabilities.

Physical interception: precise interception under the aperture
The core of an UF membrane lies in its fine pore structure, which is usually at the nanometer to micrometer level and is much smaller than the size of the impurities that need to be removed. When water flows through the UF membrane, suspended solids, macromolecular organic matter, and some microorganisms are directly intercepted on the membrane surface because the particle size is larger than the membrane pore size, and cannot pass through the membrane layer and enter the downstream. This process is an intuitive manifestation of physical interception. Physical interception is not only efficient and stable, but also can significantly reduce the turbidity and suspended matter content in the water, laying a good foundation for subsequent in-depth treatment.

Electrostatic Repulsion: The Delicate Balance of Charge Interactions
In addition to physical interception, UF membranes also have a purification mechanism of electrostatic repulsion. During the production process of UF membranes, the surface of the membrane material is often given certain charge characteristics. When these charged membrane surfaces encounter similarly charged particles in the water, the mutual repulsion between charges appears, preventing the particles from approaching the membrane pores and passing through the membrane. Especially for tiny but charged organisms such as bacteria and viruses, electrostatic repulsion has become an insurmountable barrier. This purification method based on charge interaction not only enhances the removal efficiency of the UF membrane, but also improves its selectivity for specific pollutants.

Dual mechanisms to jointly build a line of defense for purification
Physical interception and electrostatic repulsion, as the two pillars of UF membrane technology, jointly build a powerful line of defense for water quality purification. Physical interception ensures the rapid removal of most suspended solids and larger microorganisms due to its direct and efficient characteristics; while electrostatic repulsion further improves the removal of tiny organisms and charged particles by the UF membrane with its subtle charge interaction. ability. These two mechanisms complement each other, allowing UF membranes to exhibit excellent purification effects when dealing with complex water quality, ensuring that the effluent water quality meets or exceeds relevant standards.

The application prospects are broad and the future is promising
With the increasing awareness of environmental protection and the increasingly serious problem of water shortage, the application prospects of UF membrane technology in the field of water treatment are becoming increasingly broad. Whether it is in the fields of drinking water purification, industrial wastewater treatment or seawater desalination, UF membranes have won the favor of the market with their unique advantages. In the future, with the continuous advancement of material science, nanotechnology and other related fields, UF membrane technology is expected to achieve greater breakthroughs in performance and contribute more to the security and sustainable development of global water resources.