Description
Dow® Filmtec™ BW30-400/34i elements are the ultimate elements for durable, high-rejection, high-productivity performance in high fouling or challenging feed conditions, enabling trouble-free operation and a low cost of water. The BW30-400/34i element uses a 34 mil feed spacer to lessen the impact of fouling on pressure drop across a vessel and enhance cleaning effectiveness. The iLEC™ interlocking end caps reduce system operating costs and the risk of o-ring leaks that can cause poor water quality. Filmtec’s superior automated manufacturing technology results in the most consistent performance element-to-element and year-after-year.
Specifications for BW30-400/34i
| FilmTec Product: | BW30-400/34i |
| Size (Approximate): | 8″ Dia. x 40″L |
| Flow Rate: | 10,500 gpd (36 m³/d) |
| Applied Pressure: | 225 psig (15.3 bar) |
| Stabilized Salt Rejection: | 99.5% |
| Minimum Salt Rejection: | 99.0% |
| Active Surface Area: | 400 Sq. Ft. |
| Single Element Recovery: | 15% |
| End Style: | iLEC Interclocking |
| 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 BW30-400/34i
| 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 BW30-400/34i
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BW30-400/34i fits nominal 8″ ID pressure vessels.
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