Research progress in membrane fouling control in ultrafiltration

Mechanisms and various factors that affect concentration polarization and membrane fouling in ultrafiltration were discussed.Technologies for membrane fouling prevention and control including the selection of membrane materials and pore diameters,the design of modules,the pretreatment of feedstock,the reinforcing of membrane process and the cleaning of membrane were reviewed.It was pointed out that novel and practical anti-fouling membrane materials,anti-fouling modules with low energy consumption and long service life,optimum control of operations,high-efficiency on-line cleaning methods and economic and convenient off-line cleaning methods needed to be further developed.