The MWCO Range of nanofiltration membrane is between reverse osmosis membrane and ultrafiltration membrane, about 200-800 Dalton.
Interception characteristics: divalent and multivalent anions are preferentially intercepted, and the interception rate of monovalent ions is related to the concentration and composition of feed solution. Nanofiltration is generally used to remove organic matter and pigment in surface water, hardness in groundwater and partially remove dissolved salt. It is used for material extraction and concentration in food and biomedical production.