Nanofiltration is a relatively recent membrane filtration process used most often with low total dissolved solids water, such as surface water and fresh groundwater, for the purpose of softening and removal of disinfection by-product, such as natural organic matter and synthetic organic matter.

Nanofiltration Spiral Wound Elements for Water Softening, and Dyes removal

Product Description

  • Membrane Chemistry
    Proprietary, hydrophilic, modified polysulfone (PS) on a polyester support
  • Membrane Type
  • Molecular Weight Cutoff
    400 Daltons
  • Applications
    High permeability, water softening, small molecule reclamation


Flux at
4 Bar Pressure

Flourescein Rejection
(MW 332 Dalton)

Operating Information

  • Typical operating pressure: 4 – 20 bar (58 psi – 290 psi)
  • Maximum operating pressure: 20 bar (290 psi)
  • Maximum operating temperature: 50°C
  • Allowable pH: 2 – 9