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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.
SWC5-4040 Specifications:
- Permeate Flow: 1,900 gpd (7.2 m3/d)
- Salt Rejection: 99.7% (Minimum 99.5%)
- Configuration: Spiral Wound
- Membrane Polymer: Composite Polyamide
- Nominal Membrane Area: 85 ft2
The stated performance is initial (data taken after 30 minutes of operation), based on the following conditions:
- 32,000 ppm NaCl
- Applied Pressure:800 psi (5.5 MPa)
- Operating Temperature: 77°F (25°C)
- 10% Permeate Recovery
- 6.5 - 7.0 pH Range
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: 16 GPM (3.6 m3/h)
- Minimum Recovery for any Element: 10%
- Maximum Pressure Drop for Each Element: 10 psi
- Seawater Desalting
- Broad offering of membrane formulations designed to accommodate varying levels of seawater salinities worldwide
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