Description
Dow® Filmtec™ BW30-400/34 (previously BW30-400) elements, High Rejection and High Performance Industry-Standard Brackish Water Reverse Osmosis Membrane Element.
- Key Features
-Delivers consistent water quality and higher rejection and
flow than previous generation BW30 product
-Based on historical BW30 Industry-standard RO membrane
with decades of proven performance
-Excellent durability resulting in stable, long-term
performance
-Enhanced fouling protection thanks to 34 mil feed spacer
- Key Applications
-Demineralization for industrial applications, such as: Power
Generation, Steel & Metal, Chemical & Petrochemical
-Municipal water purification
Specifications for BW30-400/34
| FilmTec Product: | BW30-400/34 |
| FilmTec Part Number: | 90650 |
| Size (Approximate): | 8″ Dia. x 40″L |
| Permate Flow Rate: | 11,000 gpd (42 m3d) |
| Max operating Pressure: | 600 psig (41 bar) |
| Stabilized Salt Rejection: | 99.6% |
| Minimum Salt Rejection: | 99.4% |
| Active Surface Area: | 400 ft2 (37 m2) |
| Single Element Recovery: | 15% |
| End Style: | Standard Flush Cut |
| Exterior: | Hard Shell Fiberglass |
| Feed Spacer: | 34 mil |
| Membrane Type: | Polyamide Thin-Film Composite |
Permeate flow and salt rejection based: 2,000 ppm NaCl feed stream, 77°F, 15% recovery, 225 psig.
Operating Limits for BW30-400/34
| Maximum Operating Temperature: | 113°F (45°C) |
| Maximum Operating Pressure: | 600 psig (41 bar) |
| Maximum Pressure Drop: | 15 psig (1 bar) |
| Maximum Feed Flow Rate: | 85 gpm (19m³/h) |
| 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 |
*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.
Physical Dimensions of DOW FilmTec BW30-400/34
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BW30-400/34 fits nominal 8″ ID pressure vessels.
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