RisingSun Membrane Technology (Beijing) Co., Ltd

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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...

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Product Details

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.

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STNF module including below items:
STNF membrane
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


Identical

Difference

High membrane area

SUS center link with high strength and  stability

Integrated design

Uniform internal water distribution  structure

Cross flow filtration

Reduced impact of the membrane module  flow, higher cross-flow


Open feed channel


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RisingSun Membrane Spacer Tube Module System

STNF Specifications

Model

SG-STNF-8035

Membrane type

NF

Membrane materia

Composite  Polyamide

Membrane effective area (m2)

25

Element configuration *

Spiral、fierglass、brine seal

Feed flux range (m3/h)

5.5-12

Recommended feed flux (m3/h)

10

Permeate flux range (m3/d)

4.2-21

Stable permeate flux ** (m3/d)

9.5

Stable salt rejection **(%)

97.6

Min. salt rejection (%)

97

Feed spacer

Special open  channel

Max. TMP (bar)

0.7

Max. operation pressure (bar)

75

Max. operation temperature (℃)

40

Feed (SDI)

≤ 6.5

pH (continuous)

3-11

pH (cleaning)

2-10.5

Chlorine tolerance (ppm)

≤ 0.1

*  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.

Model

SG-STNF-8035

Element total  length (A)

890mm

Element diameter  (B)

200mm

Center tube outer  diameter (C)

60mm

Membrane body  length (D)

838mm

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Benefits:
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.

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