Second slide
Nanofiltration Membrane Element
PSI MEMBRANE® NF98 Incorporating innovative Thin Film Nanocomposite (TFN) technology, the NF98 series combine nano-level and ultra-thin hydrophilic coating technology, offering excellent anti-fouling performance. These membranes deliver twice the flux of traditional TFC membranes and operate at least 50% lower pressure, making them a superior replacement for NF270, XC-N, DL, DK, and other traditional TFC membranes.

Key Features

n The surface of NF98 membrane is super hydrophilic, with excellent anti-pollution performance and a long service life.
n The membrane flux of NF98 is generally over 30% higher than that of traditional TFC, with some models even reaching twice the flux, significantly reducing energy consumption.
n The removal rate of high-valent salts (such as magnesium sulfate, iron, heavy metals, etc.) is over 98%, and monovalent salts pass through.
n High removal rate of organic compounds (pesticides, herbicides, antibiotics and THM precursors, etc.).


Product Parameter

Product Active Area Ft2(㎡) Feed Spacer Thickness(mil) Permeate Flow Rate(m³/d) Rejection rate of Bivalent Saltion(%) Rejectionrate of Monovalent saltion(%)
NF98-HF-4040 85(7.9) 34 2800(10.6) 96 30-50
NF98-HF-8040 400(37.2) 34 13800(52.2) 96 30-50
NF98-SP-4040 85(7.9) 34 2500(9.5) 99 30-50
NF98-SP-8040 400(37.2) 34 12500(47.3) 99 30-50
NF90-4040 85(7.9) 34 1850(7.0) 99 85-90
NF90-8040 400(37.2) 34 9100(34.4) 99 85-90
NF98-SPEC-4040 85(7.9) 34 / Customized Customized
NF98-SPEC-8040 400(37.2) 34 / Customized Customized
1. Permeate flow rate and stabilized salt rejection were based on the following standard test conditions: 70 psi (0.48 MPa), 2000 ppm MgSO4, 77°F(25℃), 15% recovery.
2. Permeate flow rate yield +/-15%.


What's the difference between Nanofiltration and Loose reverse osmosis?

From different standpoint and application scenario, there are different opinions on whether nanofiltration  is a loose reverse osmosis.
The performance of NF98 series nanofiltration membrane directly replaces or even exceeds that of the mainstream imported membrane products, which can not only meet the Dunan effect with high selective retention of ions (FlG.4), but also desalting and COD removal performance can be differentiated accordina to the actual needs of customers. (Detailed cases and membrane products are welcome to consut senior pre-sales engineers).



Figure 4. Proshare NF98 salt separation membrane VS The latest XC-N salt separation membrane performance compariso



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