Nanofiltration membrane is a special and promising type of separation membrane, but its mass transfer mechanism still needs further improvement and refinement, and its separation accuracy also needs to be improved. While developing new membrane materials, attention should be paid to the development of integrated processes and process optimization.

Nanofiltration membrane separation technology, as a new type of membrane separation technology and separation method, has high potential application value in new membrane separation processes, such as catalyst recovery in solvents containing catalysts, reprocessing of sugar decolorization resin regeneration solution, water reuse in the process, acid and alkali recovery from waste liquid, bromine recovery from salt water containing heavy metal ions, treatment of power plant cooling water, nanofiltration membrane bioreactor, organic chemical waste liquid treatment, etc.

Nanofiltration membrane, as a new type of separation membrane in membrane science, has been widely used in many fields for more than 10 years due to its significant separation characteristics, and has also received increasing attention and importance from people. And the emergence of many new low molecular weight neutral and electrolyte solute separation systems, such as water resource purification, biochemical engineering, and downstream product separation and refining. This is also an opportunity for nanofiltration membranes and their separation processes. We believe that nanofiltration membrane separation technology has numerous advantages and is an emerging and noteworthy field that will have broad development prospects.