Nano Filtration (Nf) Plants
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Description
Nano filtration technology is the next step in the spectrum of membrane based treatment systems after ultrafiltration and before Reverse Osmosis. NF is also a pressure-driven separation process wherein the filtration process takes place on a selective separation layer formed by a semi-permeable membrane. The driving force of the separation process is the pressure difference between the feed (retentate) and the filtrate (Permeate) side at the separation layer of the membrane. However, because of its selectivity, one or several components of a dissolved mixture are retained by the membrane while water and substances with a molecular weight <200 D are able to permeate the semi permeable separation layer. NF plants are used for a wide range of treatment applications such as hardness reduction, juice extraction, dairy processes, dye removal, removal of divalent / polyvalent cations and high molecular ions. NF is also widely used in the tertiary treatment of ETPs apart from other industrial and commercial applications. NF operates at low and medium pressure. The feed pressure to nano membranes are lower compared to Reverse Osmosis systems.
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Nano Filtration (Nf) Plants