Water and Wastewater
Nanofiltration is often used for treatment of drinking water and industrial process water.
Industrial process water
Reduction of sulphate, chloride, and fluoride
Partial softening without use of regeneration chemicals
Partial softening and reduction of colour and humus from surface water in e.g. the iron and metal industry and paper mills.
Partial Softening Preserves Water Character
Separating divalent ions
Removal of sulphate
Reduction of chloride
Reduction of fluoride
Nanofiltration is a membrane technology, which in its mode of operation and construction is very similar to reverse osmosis. A nanofiltration membrane primarily restrains divalent ions and larger molecules. When it comes to the filtration process, a nanofiltration unit is placed between reverse osmosis and ultrafiltration