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Dow Filmtec™ BW30-400 10,500 GPD
Reverse Osmosis Membrane
for Brackish Water

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The FILMTEC™ BW30-400 element has a nominal active membrane area of 400 square feet (37 m²) and an average permeate flow of 10,500 gpd (40 m³/d) under standard conditions, yet external element dimensions are identical to those of conventional 8" elements. Because the high productivity of the FILMTEC BW30-400 element results from increased element efficiency instead of from the use of higher flux membrane or elevated feed pressure, the rate of membrane fouling remains low. This means higher flow rates can be sustained over time and element service life is prolonged. Lower pressure operation also means system operating economy is enhanced. The high surface area of the FILMTEC BW30-400 element permits design of new RO systems that meet productivity targets with fewer elements. This can mean more compact systems and significantly lower system component and installation expense. The productivity advantages of the FILMTEC BW30-400 element can also be empolyed in the design of new systems that produce the desired gpd (m³/d) while operating at lower feed pressures.

View a chart that shows which inorganic compounds can be removed from drinking water with this reverse osmosis membrane.

Filmtec Commercial Membrane Dimensions
A: 40.0" B: 1.125" C: 7.9"