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Hunan KeensSen Technology Co.,Ltd.

Leading Manufacturer of RO & NF Membrane Element
And Membrane Flat Sheet

High Flux Nanofiltration Membrane Element-NF2-4040

Product Categary:
Industrial Membrane Element
Main Feature:
It has the selective desalination mechanism for removal of high polyvalent ions and partial maintaining of monovalent ions with health benefits. Moreover, the equipment operating cost can be reduced effectively with the advantage of low working pressure.

It is applicable to the desalination of direct drinking water, spring water, boiler water, also desalination and decolorization of wastewater with high salt concentration.

Specifications & Parameters
Model Active Membrane Area ft2(m2) Permeate Flow GPD(T/D)  Rejection Rate (%)
500ppm NaCl
 Rejection Rate (%)
2000ppm MgSO4
NF2-4040 85(7.9) 2400(9.1) 30-50 97
Standard Test Condition
Concentration of Solution (NaCl) Temperature(℃) pH Value > Operating Pressure psi(MPa) Recovery Rate(%)




7.5-8 70(0.48) 15

Notes: The permeate flow of single membrane element may vary with in ±15%.

Operating Limits and Conditions of Membrane Element:

Max.Working Pressure 600 psi(4.14MPa)
Max. FeedWater Temperature 45 ℃
Max. Feed Water Flow 17.0m3/h(8040), 3.6m3/h(4040)
Max. FeedWaterSDI15 5.0
Free Chlorine Concentration of FeedWater 0.1mg/L
pHRange of FeedWaterDuring Continuous Operation 3-10
pHRange of FeedWaterDuring Chemical Cleaning 2-12
Max. Pressure Drop of Single Membrane Element 10psi(0.07Mpa)
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Hunan Keensen Technology Co.,Ltd

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  • ADD.: No.6, Lutian RD, Lu Valley, Changsha Hunan, China