SW30-4040

Summary

Product identification

FilmTec™ SW30 Seawater Reverse Osmosis Elements for Marine Systems are improved membranes designed for high productivity and excellent salt rejection. These elements feature high flow rates for both sea-based and land-based desalinators and can be operated at lower pressure.

• Membrane Type: Polyamide Thin-Film Composite

Product water

Typical performance for FilmTec™ SW30-4040 under standard test conditions:

• Applied Pressure: 800 psig (55 bar)
• Permeate Flow Rate: 1,950 gpd (7.4 m³/d)
• Stabilized Salt Rejection: 99.4%

These permeate flow and salt rejection figures are based on the following test conditions:

• 32,000 ppm NaCl
• Pressure specified above
• 77°F (25°C)
• Recovery Rate: 8%

Permeate flows for individual elements may vary +/-20%. The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water; effective removal depends on the complete system design, operation, and maintenance. Permeate obtained from the first hour of operation should be discarded.

Operating limits

• Maximum Operating Temperature: 113°F (45°C)
• Maximum Operating Pressure: 1,000 psi (69 bar)
• Maximum Pressure Drop: 15 psig (1.0 bar)
• pH Range, Continuous Operation: 2 - 11 (Maximum temperature for continuous operation above pH 10 is 95°F (35°C))
• pH Range, Short-Term Cleaning: 1 - 13
• Maximum Feed Silt Density Index: SDI 5
• Free Chlorine Tolerance: <0.1 ppm (Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure.)
• Maximum pressure drop across an entire pressure vessel (housing): 50 psi (3.4 bar)

Mechanical / Hydraulic

Dimensions for SW30-4040:

• Maximum Feed Flow Rate: 16 gpm (3.6 m³/h)
• Length (A): 40.0 inches (1,016 mm)
• Brine Seal End (B): 1.05 inches (26.7 mm)
• Permeate Tube ID (C): 0.75 inches (19 mm)
• Element OD (D): 3.9 inches (99 mm)

SW30-4040 Elements fit nominal 4-inch I.D. pressure vessels.

Operation Guidelines:

• Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning, or other sequences to prevent possible membrane damage.
• During start-up, feed pressure should be increased gradually over a 30-60 second time frame.
• Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
• Keep elements moist at all times after initial wetting.
• If operating limits and guidelines are not strictly followed, the limited warranty may be null and void.
• During prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution to prevent biological growth.
• Avoid static permeate-side backpressure at all times.

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Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the latest revisions present in the official PDF datasheet. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet