BW30-400-IG

Summary

Product identification

The FilmTec™BW30-400 is a high rejection, high surface area brackish water reverse osmosis (RO) element. It features a spiral-wound design with a polyamide thin-film composite membrane. This product delivers high flow and high rejection without being chlorinated during manufacturing.

Typical Properties

• FilmTec™ Element: BW30-400
• Active area: 400 ft² (37 m²)
• Feed spacer thickness: 28 mil
• Permeate flow rate: 10,500 gpd (40 m³/d)
• Stabilized salt rejection: 99.5%
• Minimum salt rejection: 99.0%

Permeate flow and salt rejection are based on the following standard conditions: 2,000 ppm NaCl, 225 psi (15.5 bar), 77°F (25°C), pH 8 and 15% recovery.

Mechanical / hydraulic

Element Dimensions – inches (mm)

• A: 40.0 (1,016)
• B: 1.125 ID (29)
• C: 7.9 (201)

The element is designed to fit a nominal 8.0-inch (203 mm) I.D. pressure vessel.

Operating limits

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C) (Note: Maximum temperature for continuous operation above pH 10 is 95°F (35°C)).
• Maximum Operating Pressure: 600 psig (41 bar)
• Maximum Pressure Drop (per element): 15 psig (1.0 bar)
• pH Range - Continuous Operation: 2 - 11
• pH Range - Short-Term Cleaning (30 min.): 1 - 13
• Maximum Feed Flow: 70 gpm (15.9 m³/hr)
• Maximum Feed Silt Density Index (SDI): SDI 5
• Free Chlorine Tolerance: < 0.1 ppm (Note: Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Oxidation damage is not covered under warranty.)
• Maximum pressure drop across an entire pressure vessel (housing): 50 psi (3.4 bar)

Operation Guidelines

• Proper start-up of reverse osmosis water treatment systems is essential to prepare membranes for operating service and prevent damage from overfeeding or hydraulic shock.
• Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning, or other sequences.
• During start-up, a gradual change is recommended:
  • Feed pressure should be increased gradually over a 30-60 second time frame.
  • Cross-flow velocity at the set operating point should be achieved gradually over 15-20 seconds.
• Keep elements moist at all times after initial wetting.
• To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
• Avoid static permeate-side backpressure at all times.
• Permeate obtained from the first hour of operation should be discarded.
• The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet