Hydranautics SWC4+ Membrane

Hydranautics has over two decades of experience in desalination and over 1.7 million cubic meters (461 million gallons per day) of seawater treated by their SWC (seawater composite) membranes. SWC seawater desalination membranes are available in high productivity 8-inch and 4-inch elements, all offering the highest levels of salt rejection and a consistently pure end product. Membrane formulations are designed to accommodate varying levels of seawater salinities worldwide with reliable field-proven performance.

[custom-specifications]

SWC4+ Specifications:

• Permeate Flow: 6,500 gpd (24.6 m³/d)
• Salt Rejection (nominal): 99.8 %
• Salt Rejection (minimum): 99.7 %
• Type Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Nominal Membrane Area: 400 ft²

The stated performance is initial (data taken after 30 minutes of operation), based on the following conditions:

• 32,000 ppm NaCl
• 800 psi (5.5 MPa) Applied Pressure
• 77 °F (25 °C) Operating Temperature
• 10% Permeate Recovery
• 6.5 - 7.0 pH Range

[/custom-specifications]

[custom-features]

Standard Operating Limits:

• Maximum Applied Pressure: 1200 psig (8.27 MPa)
• Maximum Chlorine Concentration: < 0.1 PPM
• Maximum Operating Temperature: 113 °F (45 °C)
• Feedwater pH Range: 3.0 - 10.0
• Maximum Feedwater Turbidity: 1.0 NTU
• Maximum Feedwater SDI (15 mins): 5.0
• Maximum Feed Flow: 75 GPM (17.0 m³/h)
• Minimum Ratio of Concentrate to
• Permeate Flow for any Element: 5:1
• Maximum Pressure Drop for Each Element: 10 psi

[/custom-features]

[custom-usage]

• Seawater Desalting
• Broad Offering of Membrane Formulations Designed to Accommodate Varying Levels of Seawater Salinities Worldwide

[/custom-usage]