4″x40″ | 97% Salt Rejection | 2,000 GPD | FilmTec NF90 Element

DOW FILMTEC NF90-4040 Nanofiltration (NF) Membrane Elements for Commercial Systems

The DOW FILMTEC NF90-4040 membrane elements provide high productivity performance while removing a high percentage of salts, nitrate, iron and organic compounds such as pesticides, herbicides and THM precursors. The low net driving pressure of the FilmTec NF90-4040 membrane allows the removal of these compounds at low operating pressures. DOW FILMTEC NF90-4040 has a fiberglass outer wrap.

DOW FILMTEC NF90-4040 is FDA 21 CFR 177.2550; Food and Drug Administration Compliant.

Common Applications for FilmTec NF90-4040 Nanofiltration Elements:

• Production of Drinking Water
• Demineralization in Small Commercial Applications

Benefits of DOW FilmTec Commercial NF Membranes

• High flux results in high yields
• Low energy usage reduces power consumption and costs
• Durable with good cleanability for long element life
• FilmTec performance and quality

Specifications for NF90-4040

Permeate flow and salt rejection based: 2,000 ppm MgSO4 feed stream, 77F, 15% recovery, 70 psig.

Operating Limits for NF90-4040

*Maximum temperature for continuous operation above pH 10 is 95F
**Refer to cleaning guidelines.
***Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure.