BW30-400-IG

Summary

Product identification

The FilmTec™ BW30-400 is a high rejection, high surface area brackish water reverse osmosis (RO) element. It is a spiral-wound element featuring a polyamide thin-film composite membrane. It was the first 400 square foot membrane element on the market.

Key features:

• DuPont’s automated manufacturing technology ensures consistent performance.
• Delivers high flow and high rejection.
• Not chlorinated during the manufacturing process, contributing to durability and a wider cleaning pH range.

Operating limits

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C)
  • 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 5
• Free Chlorine Tolerance: < 0.1 ppm
  • Oxidation damage from free chlorine is not covered under warranty; pretreatment to remove residual free chlorine is recommended.
• Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).

Product water

The following typical properties are based on standard conditions: 2,000 ppm NaCl, 225 psi (15.5 bar), 77°F (25°C), pH 8 and 15% recovery.

• Permeate flow rate: 10,500 gpd (40 m³/d)
  • Flow rates for individual elements may vary but will be no more than 15% below the value shown.
• Stabilized salt rejection: 99.5%
• Minimum salt rejection: 99.0%

Mechanical / hydraulic

• Active area: 400 ft² (37 m²)
  • Active area is guaranteed +/-3%.
• Feed spacer thickness: 28 mil
• Element dimensions:
  • A: 40.0 inches (1,016 mm)
  • B (ID): 1.125 inches (29 mm)
  • C: 7.9 inches (201 mm)
• Designed to fit a nominal 8.0-inch (203 mm) I.D. pressure vessel.

General

• Proper start-up procedures are essential to prepare membranes for service and prevent damage.
• During start-up, gradual changes are recommended: feed pressure increased over 30-60 seconds, cross-flow velocity achieved over 15-20 seconds.
• Elements must be kept moist at all times after initial wetting.
• For prolonged system shutdowns, immersion in a preservative solution is recommended to prevent biological growth.
• The customer is responsible for the effects of incompatible chemicals and lubricants.
• Avoid static permeate-side backpressure at all times.
• Permeate obtained from the first hour of operation should be discarded.
• The use of this product does not guarantee the removal of cysts and pathogens; effective reduction depends on complete system design, operation, and maintenance.

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Disclaimer: This summary is based on the provided text extraction and may not include all figures, footnotes, or the latest revisions. Contractual data for any project must match the specific OEM PDF revision used.

Official datasheet (PDF)

PDF datasheet