DOW FILMTEC™ NF270-2540 Nanofiltration (NF) Membrane Elements for Commercial Systems
DOW FILMTEC™ NF270-2540 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 NF270-2540 elements are tape-wrapped.
DOW FILMTEC NF270-2540 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.
 
Common Applications for FilmTec NF270-2540 Nanofiltration Elements:
- Production of Municipal Drinking Water
- Demineralization in Small Commercial Applications
Related Products for use with NF270-2540
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| PV2540PVCAU |
PVC Membrane Housing Pressure Vessel for 2.5" x 40" Membrane Element |
| PV2540SSAU-316 |
Stainless Steel Membrane Housing Pressure Vessel for 2.5" x 40" Membrane Element |
| PV2540SSAW-316 |
Stainless Steel End-Clamp-Style Membane Housing Pressure Vessels for 2.5" x 40" Membrane Elements |
| PV-IN410 |
Interconnector Coupler for Installing Multiple Elements in a housing - FilmTec part # 89055. Includes two o-rings. |
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Benefits of DOW FilmTec Commercial NF Membranes
- Good organic (NOM) removal
- Partial softening preserves water character
- High flux results in high yields
- Low energy usage reduces power consumption and costs
- FilmTec performance and quality
Physical Dimensions of DOW FilmTec NF270-2540
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INCHES (MM) |
| A |
40.0 (1,016) |
| B |
1.19 (30) |
| C |
0.75 (19) |
| D |
2.4 (61) |
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NF270-2540 Fits nominal 25x40 size pressure vessels.
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Specifications for NF270-2540
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| FilmTec Product: |
NF270-2540 |
| FilmTec Part Number: |
149982 |
| Size (Approximate): |
2.5" Dia. x 40"L |
| Flow Rate: |
850 gpd (3.2 m³/d) |
| Applied Pressure: |
70 psig (4.8 bar) |
| Stabilized Salt Rejection: |
>97% |
| Single Element Recovery: |
15% |
| Exterior: |
Tape-Wrapped |
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 NF270-2540
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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: |
13 psig (0.9 bar) |
| Maximum Feed Flow Rate: |
6 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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