Nanofiltration is mainly applied in drinking water purification process steps, such as water softening, decolouring and micro pollutant removal. During industrial processes nanofiltration is applied for the removal of specific components, such as colouring agents. It is a pressure related process, during which separation takes place, based on molecule size.
The technique is mainly applied for the removal of organic substances, such as micro pollutants and multivalent ions. Nanofiltration elements have a moderate retention for univalent salts.
Other applications of nanofiltration are:
– The removal of pesticides from groundwater
– The removal of heavy metals from wastewater
– Water softening
– Nitrates removal