Technology

Knowledge of nanofiltration

Nanofiltration (NF) is a cross flow filtration technology that lies between ultrafiltration (UF) and reverse osmosis (RO).
The nanofiltration membrane is measured by the molecular weight of interception (MWCO). Normally, the intercepted molecular weight of nanofiltration membranes is less than 1000 Daltons.

Its transmembrane pressure (up to 3 MPa) is less than the required for reverse osmosis, greatly reducing operating costs. Filtering technology is based on the appropriate pore size on the surface of the filter membrane, through which liquid will pass through the membrane. These pore sizes are usually less than 10nm, and nanofiltration is often used to remove ions from different solutions.

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