Spacer Tube NF Membrane (STNF) for Spiral RO/NF Concentrates
The spacer tube membrane module is designed for superior fluid dynamics in the most difficult applications. We use special open type feed spacers to minimize contact with the membrane surface, the ST module enables a high operation pressure but a low pressure drop across the vessel with a...
The spacer tube membrane module is designed for superior fluid dynamics in the most difficult applications. We use special open type feed spacers to minimize contact with the membrane surface, the ST module enables a high operation pressure but a low pressure drop across the vessel with a dramatically reduced fouling material between the spacer and membrane sheet.
RisingSun Membrane produces Spacer Tube Nanofiltration Membrane (STNF) for different High TSS Water.
STNF module including below items:
High pressure vessel
SUS center link
Inlet and outlet pipe and accessories
RisingSun Membrane Spacer Tube Module
Comparison of Spacer Tube Membrane Module and Conventional Spiral NF membrane
High membrane area
SUS center link with high strength and stability
Uniform internal water distribution structure
Cross flow filtration
Reduced impact of the membrane module flow, higher cross-flow
Open feed channel
RisingSun Membrane Spacer Tube Module System
Membrane effective area (m2)
Element configuration *
Feed flux range (m3/h)
Recommended feed flux (m3/h)
Permeate flux range (m3/d)
Stable permeate flux ** (m3/d)
Stable salt rejection **(%)
Min. salt rejection (%)
Special open channel
Max. TMP (bar)
Max. operation pressure (bar)
Max. operation temperature (℃)
Chlorine tolerance (ppm)
* Salt seal installed on the end of the flow, low pressure side / permeate side.
** Stable flux, salt rejection based on the following test conditions: 30,000 mg/l MgSO4 , pressure 45bar,recycle rate 8%,temperature 20℃, pH=8. There will be a minor difference of permeate due to the feed quality.
Element total length (A)
Element diameter (B)
Center tube outer diameter (C)
Membrane body length (D)
1. Spacer tube nanofilter is high strength design, up to 80 bar operating pressure.
2. Open feed spacer with low flow resistance and concentration polarization.
3. Spiral wound structure with more membrane area.
4. Membrane is long using life.
5. Competitive price and fast delivery.
6. Cross replacements: Nanostone.
Welcome to purchase the high quality, effective and competitive price spacer tube nf membrane (stnf) for spiral ro/nf concentrates in stock from our factory. RisingSun Membrane is one of the certified such manufacturers and suppliers in China. Both the free sample and the customized service are available.