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| Envirox Protection Co. Pvt. Ltd. |
Sadhana House,
04th Floor, P.B Marg,
Behind Mahindra Tower,
Worli, Mumbai-400018.
Tel. +91 22 66693830 / +91 22 61485656
Fax. +91 22 66693831
info@enviroxprotection.com |
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NANOFILTRATION |
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 The
nano filtration technique is mainly used for the removal of two
valued ions and the larger mono valued ions such as heavy metals.
This technique can be seen as a coarse RO (reversed osmosis)
membrane.
Because nano filtration uses less fine membranes, the feed pressure
of the NF system is generally lower compared to RO systems. Also the
fouling rate is lower compared to Ro systems..
Applications for NF systems are:
softening
specific removal of heavy metals from proces streams for reuse of water
Reduction of salt contents of slightly brackish water
Typical membrane performance for NF membranes are 50% NaCl removed
and 90% (or more) for CaSO4
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