for Molecular range (pesticides, herbicide)
Nanofiltration is a membrane separation technique in which very fine particles or other suspended matters, with a particle size in the range of approximately 0.0001 to 0.005 microns, are separated from a liquid. It is capable of removing viruses, pesticides and herbicides. In addition, nanofiltration removes all organic matter, a range of salts and divalent ions. The latter are a cause for water the classified as “Hard” . The most common application for this level of membrane filtration is to soften water for different processes and application. Nanofiltration allows for a specific range of substances to be rejected and at a lower pressure, less drive force through the membranes implies lower energy consumption whilst very specific effluent standards can still be met.