DOW FILMTEC NF270-4040 Nanofiltration (NF) Membrane Elements for Commercial Systems
DOW FILMTEC NF270-4040 Elements are ideal for removing a high percentage of TOC and THM precursors with medium to high salt passage and medium hardness passage in commercial systems. The NF270 nanofiltration membrane is an ideal choice for surface water and ground water where good organic removal is desired with partial softening. DOW FILMTEC NF270-4040 elements have a fiberglass outer wrap.
DOW FILMTEC NF270-4040 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.
 
Common Applications for FilmTec NF270-4040 Nanofiltration Elements:
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Production of Drinking Water
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Demineralization in Small Commercial Applications
Benefits of DOW FilmTec Commercial NF Membranes
- High flux results in high yields
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Low energy usage reduces power consumption and costs
- Durable with good cleanability for long element life
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FilmTec performance and quality
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Specifications for NF270-4040
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FilmTec Product: |
NF270-4040 |
FilmTec Part Number: |
149987 |
| Size (Approximate): |
4" Dia. x 40"L |
Flow Rate: |
2,500 gpd (9.5 m³/d) |
Applied Pressure: |
70 psig (4.8 bar) |
Stabilized Salt Rejection: |
>97% |
Single Element Recovery: |
15% |
| Exterior: |
Hard Shell Fiberglass |
Membrane Type:
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Polyamide Thin-Film
Composite |
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Permeate flow and salt rejection based: 2,000 ppm MgSO4 feed stream, 77°F, 15% recovery, 70 psig.
Operating Limits for NF270-4040
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Maximum Operating Temperature: |
113°F (45°C)
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Maximum Operating Pressure: |
600 psig (41 bar) |
Maximum Pressure Drop: |
15 psig (0.9 bar) |
Maximum Feed Flow Rate: |
16 gpm (1.4m³/h)
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pH Range, Continuous Operation*: |
2-11 |
pH Range, Short-Term Cleaning**: |
1-13 |
Maximum Feed Silt Density Index: |
SDI 5 |
Fere Clorine Tolerance***: |
<0.1ppm |
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*Maximum temperature for continuous operation above pH 10 is 95°F
**Refer to cleaning guidelines.
***Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure.
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