Description
Dow® Filmtec™ BW30HR-440i elements are high-performing and productivity elements, combining the highest active membrane area available in the industry today with maximum rejection brackish water reverse osmosis (RO) membrane. It incorporates Dow’s innovative and proprietary BW30HR membrane sheet technology, designed to deliver the highest quality RO permeate. This is combined with the cleanability of a 28 mil feed spacer, to minimize capital expenses in high-purity industrial water applications, without increasing operating flux.
Specifications for BW30HR-440I
| FilmTec Product: | BW30HR-440I |
| Size (Approximate): | 8″ Dia. x 40″L |
| Flow Rate: | 12,650 gpd (48 m³/d) |
| Applied Pressure: | 225 psig (15.3 bar) |
| Stabilized Salt Rejection: | 99.7% |
| Minimum Salt Rejection: | 99.4% |
| Active Surface Area: | 440 Sq. Ft. |
| Single Element Recovery: | 15% |
| End Style: | iLEC Interclocking |
| Exterior: | Hard Shell Fiberglass |
| Feed Spacer: | 28 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 BW30HR-440I
| Maximum Operating Temperature: | 113°F (45°C) |
| Maximum Operating Pressure: | 600 psig (41 bar) |
| Maximum Pressure Drop: | 15 psig (1 bar) |
| 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 BW30HR-440I
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BW30HR-440I fits nominal 8″ ID pressure vessels.
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