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NITTO Hydranautics ESPA4-LD-4040 Low Energy RO Membrane ESPA4 | 4 x 40" 80 sq ft

ESPA4 membranes require ultra-low pressures without compromising standards for high flux and high salt rejection. ESPA4 membrane has been commonly used in drinking water production from well and surface waters in the water treatment industry. It is widely accepted due to significant operational cost savings associated with their use.

Due to their ultra-low feed pressure requirement, ESPA4 membranes have been accepted as a standard in the second pass of a two pass reverse osmosis systems.

ESPA4-LD are ultra-low pressure brackish water membranes that use patented Low Differential LDTM technology designed to minimize colloidal fouling.

Applications

• Municipal potable and wastewater plants
• Bottling Operations
• Light industrial

Specifications

     Permeate Flow     2,350 gpd (8.90 m3/d)

     Salt Rejection     99.2% (99.0% minimum)

     Type Configuration     Spiral Wound

     Membrane Polymer     Composite Polyamide

     Membrane Active Area     80 ft (7.4 m)

     Feed Spacer     34 mil (0.864 mm)

Operating Limits

• Maximum Applied Pressure 600 psig (4.14 MPa)
• Maximum Chlorine Concentration < 0.1 PPM
• Maximum Operating Temperature 113 °F (45 °C)
• pH Range, Continuous (Cleaning) 2-10 (1-12)
• Maximum Feedwater Turbidity 1.0 NTU
• Maximum Feedwater SDI (15 mins) 5.0
• Maximum Feed Flow 16 GPM (3.6 m3/h)
• Minimum Ratio of Concentrate to Permeate Flow for any Element 5:1
• Maximum Pressure Drop for Each Element 15 psi

Please Inquire if Necessary