Progress on Nanofiltration Membrane

Nanofiltration(NF) membrane is a new membrane with molecular weight cutoff between reverse osmosis membranes and ultra filtration membrane,and it can retain inorganic salts.According to the methods of NF membranes preparation at home and abroad,the research progress in this field on L-S phase reversion,composition,charged method and inorganic modification were mainly reviewed.At present,low membrane flue,high production costs and poor antifouling property were existed,therefore,choosing and preparing NF membrane,optimizing the process design of the water treatment of NF membrane,improving the properties of NF membrane,reducing the production costs of NF membrane and increasing the antifouling property were of great importance in NF membrane research.