What does nanofiltration mean in practice?
NF has a retention intermediate between UF and RO and usually retains polyvalent ions more strongly than monovalent ions.
When does it matter?
The degree of reduction of hardness, sulfates and micropollutants depends on the specific membrane, water composition and operating parameters.
Which solutions are related to it?
The membrane is selected based on the water retention card and tests, designing prefiltration, recovery, pressure and concentrate discharge.