Hydranautics ESPA2 Membrane

The energy required to pressurize RO feed water is the largest contributor to the total energy consumption of the RO plant. ESPA membranes are the choice for applications demanding high-energy efficiency, with uncompromised productivity and salt rejection. Operating at significantly lower pressures, ESPA elements produce high quality water in a range of water treatment applications, ensuring energy cost savings.

ESPA membranes are used in the treatment of drinking water, industrial process waters, municipal and industrial waste water recovery and reuse because of this exception performance capability. These membranes also serve as part of polishing units in seawater desalination plants when boron rejection is critical.

[custom-specifications]

ESPA2 Specifications:

• Permeate Flow: 9,000 gpd (34.1 m³/d)
• Salt Rejection (minimum): 99.5 %
• Type Configuration: SpiralWound
• 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:

• 1500 PPM NaCl solution
• 150 psi (1.05 MPa) Applied Pressure
• 77 °F (25 °C) Operating Temperature
• 15% Permeate Recovery
• 6.5 - 7.0 pH Range

[/custom-specifications]

[custom-features]

Standard Operating Limits:

• Maximum Applied Pressure: 600 psig (4.16 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]

• Municipal Potable and Wastewater Plants
• Bottling Operations
• Light Industrial

[/custom-usage]