What's the problem with membrane fouling?

        Membrane fouling can be divided into precipitation fouling, adsorption fouling and biological fouling. The mechanism or reasons of their formation are analyzed, and the corresponding control methods are put forward. Membrane fouling refers to the irreversible change of membrane permeability and separationcharacteristics caused by the adsorption and deposition of particles, colloidal particles or solute macromolecules on the membrane surface or in the membrane pore due to the physical-chemical interaction or mechanical interaction with the membrane in the process of membrane filtration.

        In fact, the reliability of membranesis one of the key factors hindering the popularization and application of membrane technology, andpollution is the decisive factor affecting its reliability. According to the investigation, pollution is still the main problem in ultrafiltration. Elimination of pollution willincrease the efficiency of ultrafiltration process by more than 30%, reduce investment by 15%, improve separation effect and broaden the scope of ultrafiltration. Specific analysis of the types and causes of membrane fouling will help to take appropriate measures to reduce or eliminate its adverse effects.