Description
Dow® Filmtec™ BW30-4040 brackish water reverse osmosis membranes provide consistent, outstanding system performance in light industrial applications. Filmtec BW30-4040 elements are the industry standard for reliable operation and production of the highest quality water. With the thickest feed spacer (34 mil) available to lessen the impact of fouling, these membranes may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning. Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. No interconnector included.
Specifications for BW30-4040
| FilmTec Product: | BW30-4040 |
| FilmTec Part Number: | 80783 |
| Size (Approximate): | 4″ Dia. x 40″L |
| Flow Rate: | 2,400 gpd (9.1 m³/d) |
| Applied Pressure: | 225 psig (15.5 bar) |
| Stabilized Salt Rejection: | 99.5% |
| Active Surface Area: | 78 Sq. Ft. |
| Single Element Recovery: | 15% |
| 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 BW30-4040
| 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: | 16 gpm (3.6m³/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.
Physical Dimensions of DOW FilmTec BW30-4040
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BW30-4040 fits nominal 4×40 size pressure vessels.
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