Nanofiltration systems (NF) for water treatment
Nanofiltration (NF) and Reverse osmosis (RO)
Reverse osmosis is a frequently used process in the field of water desalination. By reverse osmosis, monovalent ions can be removed from the water. This requires adequate diaphragms and high operating pressures up to 60 bar.
Nanofiltration is an identical process. However, the retention rates are lower than in reverse osmosis. Nanofiltration works with a lower water pressure of less than 8 bar. Nanofiltration or NF is therefore often referred to as low-pressure reverse osmosis (LPRO).
The main application of nanofiltration is the softening of drinking water, the removal of DOC (decolouration) or the retention of anthropogenic trace substances.
Downstream acid removal
Nanofiltration removes solids while gases can diffuse through the membrane. This leads to the need for deacidification after softening with nanofiltration. This can be done e.g. by cross-flow aeration.
We would like to support you in project planning.
Call us and we will develope the best solution for you.
Tel. +49 751 6009-47
Tel. +49 751 6009-86