FilmTec™ BW30XFRLE-400/34 Membrane element (EN)

• Offers good salt-rejection with 30% lower pressures
• Delivers excellent silica, nitrate and ammonium rejection
• Provides the most effective cleaning  performance, robustness and durability due to its widest cleaning pH range (1-13) and chemical tolerance and the support of DuPont technical representatives

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Product type

Spiral-wound element with polyamide thin-film composite membrane

Typical properties

• Nominal active surface - 37 m²
• Feed Spacer Thickness - 34-LPD mil
• Permeate flow rate - 43.5 m³/day
• Stabilized salt rejection - 99.3%
• Minimum salt rejection - 99.1%

1. Permeate flow and salt rejection based on the following standard conditions: 2,000 ppm NaCl, 150 psi (10.3 bar), 77°F (25°C), pH 8 and 15% recovery.

2. Flow rates for individual elements may vary but will be no more than ±15%.

3. Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending upon feed water characteristics and operating conditions.

4. Sales specifications may vary as design revisions take place.

5. Active area guaranteed ± 3%. Active area as stated by DuPont Water Solutions is not comparable to nominal membrane area often stated by some manufacturers.

Operating and Cleaning Limits

• Maximum Operating Temperature - 45°C
• Maximum Operating Pressure - 41 bar
• Maximum Pressure Drop - 1.0 bar
• pH Range (continous operation) - 2-11
• Maximum Feed Silt Density Index - SDI 5
• Free Chlorine Tolerance <0.1 ppm