SW30-380

Summary

Product Identification

The FILMTEC™ SW30-380 is a high productivity seawater reverse osmosis element. It offers low energy consumption for two-pass seawater desalination systems and is also suitable for high salinity brackish water applications.

• Part Number: 113853
• Membrane Type: Polyamide Thin-Film Composite

Features:

• High flow and high rejection membrane helps reduce energy costs in the first pass of two-pass seawater systems.
• Offers superior economics for desalinating cold water feeds (< 20ºC).
• Delivers high performance without the use of oxidative treatments, contributing to durability and effective cleaning over a wider pH range (1 - 13).

Product Specifications

• Active Area: 380 ft² (35 m²)
• Applied Pressure: 800 psig (55 bar)
• Permeate Flow Rate: 9,000 gpd (34 m³/d)
• Stabilized Salt Rejection: 99.4%
  • Minimum salt rejection is 98.8%.
• Test Conditions: Permeate flow and salt rejection are based on 32,000 mg/L NaCl, applied pressure as specified above, 77°F (25°C), and 10% recovery.
• Individual Element Flow Variation: Permeate flows for individual elements may vary -15% to +25%.

Mechanical / Hydraulic

Dimensions:

• A (Length): 40.0 inches (1,016 mm)
• B (Coupler Dia.): 1.125 inches (29 mm)
• C (Element Dia.): 7.9 inches (201 mm)
• The SW30-380 fits nominal 8.00-inch (203 mm) I.D. pressure vessels.
• A coupler (part number 129768) is supplied with each element, including two 3-912 EPR o-rings (part number 151705).

Operating Limits

• Maximum Operating Temperature: 113°F (45°C)
• Maximum Operating Pressure: 1,000 psig (69 bar)
• Maximum Pressure Drop (per element): 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 (30 min.): 1 - 13
• Maximum Feed Silt Density Index (SDI): 5
• Free Chlorine Tolerance: < 0.1 ppm (The presence of free chlorine and other oxidizing agents can cause premature membrane failure; removal of residual free chlorine by pretreatment is recommended).

Operation Guidelines

• Avoid any abrupt pressure or cross-flow variations during start-up, shutdown, cleaning, or other sequences.
• Start-up Recommendation:
  • Feed pressure should be increased gradually over a 30-60 second timeframe.
  • Cross-flow velocity at the set operating point should be achieved gradually over 15-20 seconds.
  • Permeate obtained from the first hour of operation should be discarded.

General Information

• Keep elements moist at all times after initial wetting.
• For prolonged system shutdowns, immerse membrane elements in a preservative solution to prevent biological growth.
• The customer is responsible for the effects of incompatible chemicals and lubricants on elements.
• Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
• Avoid permeate-side backpressure at all times.
• The use of this product does not necessarily guarantee the removal of cysts and pathogens from water; effective reduction depends on the complete system design, operation, and maintenance.

Disclaimer

This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. For contractual purposes, refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet