STNF spacer tube nanofiltration element SG-STNF

Spacer tube NF element 8035 for high-TSS water and RO/NF concentrates, 25 m² membrane, up to 75 bar.

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The spacer tube module is designed for good fluid dynamics in the most difficult applications. Special open feed spacers minimise contact with the membrane surface, so the module runs at high pressure with a low pressure drop and much less fouling between spacer and membrane. Compared with a conventional spiral NF element it has the same high membrane area and cross-flow filtration, plus a stainless steel center link, an integrated design and a more uniform internal water distribution.

Key features

  • High-strength design, up to 80 bar
  • Open feed spacer with low flow resistance and concentration polarization
  • Spiral wound structure with large membrane area
  • Long membrane life
  • Supplied with STNF membrane, high-pressure vessel, stainless steel center link, pipes and accessories

Practical applications

RO/NF concentrates

Treating concentrate from spiral wound RO/NF systems.

High-TSS water

NF for water with high suspended solids.

Industrial wastewater

Partial desalting and removal of organics.