DOW FILMTEC™ BW30-4040 Brackish Water Reverse Osmosis Membrane Element
DOW FILMTEC BW30-4040 Elements are an industry standard for reliable operation and production of high quality water in light industrial applications. This element features the thickest feed spacer (34 mil) available in the industry today to lessen the impact of fouling as well as a fiberglassed shell, which is recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. The element may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning.
DOW FILMTEC Brackish Water Reverse Osmosis Elements can separate salts from water and are produced with an automated fabrication process for precision, consistency, and reliability. DOW FILMTEC RO membranes build on a tradition of leadership in the thin-film composite membrane industry and meet the challenges of higher rejection in lower-pressure operations.
DOW FILMTEC BW30-4040 is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.
 
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Specifications for BW30-4040
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FilmTec Product: |
BW30-4040 |
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FilmTec Part Number: |
80783 |
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Size (Approximate): |
4" Dia. x 40"L |
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Flow Rate: |
2,400 gpd (9.1 m³/d) |
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Applied Pressure: |
225 psig (15.5 bar) |
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Stabilized Salt Rejection: |
99.5% |
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Active Surface Area: |
78 Sq. Ft. |
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Single Element Recovery: |
15% |
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Exterior: |
Hard Shell Fiberglass |
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Feed Spacer: |
34 mil |
Membrane Type:
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Polyamide Thin-Film
Composite |
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Permeate flow and salt rejection based: 2,000 ppm NaCl feed stream, 77°F, 15% recovery, 225 psig.
Operating Limits for BW30-4040
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Maximum Operating Temperature: |
113°F (45°C) |
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Maximum Operating Pressure: |
600 psig (41 bar) |
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Maximum Pressure Drop: |
15 psig (1 bar) |
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Maximum Feed Flow Rate: |
16 gpm (3.6m³/h) |
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pH Range, Continuous Operation*: |
2-11 |
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pH Range, Short-Term Cleaning**: |
1-13 |
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Maximum Feed Silt Density Index: |
SDI 5 |
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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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