Hydranautics SWC4B Membrane

Product Description

The SWC4B can meet your industrial and commercial seawater desalination standards. Hydranautics membrane formulations are designed to accommodate varying levels of seawater salinities worldwide with reliable field-proven performance. They have the highest boron rejection available. 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.

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SWC4B Specifications:

Permeate Flow: 6,500 gpd (24.6m³/d)
Salt Rejection: 99.8% (99.7% minimum)
Boron Rejection (Typical): 95.0%
Configuration: Spiral Wound
Membrane Polymer: Composite Polyamide
Nominal Membrane Area: 400ft²

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

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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

The limitations shown here are for general use. The values may be more conservative for specific projects to ensure the best performance and longest life of the membrane.

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