Hydranautics ESPA-4611 Membrane

Product Description

ESPA-4611 is an excellent energy-saving polyamide membrane. The growing family of ESPA RO membranes continue to meet the ever-increasing demands of the water treatment industry. Industrial users worldwide have made the world's leading high productivity, energy-saving polyamide membrane their first choice for high productivity and salt rejection. There's an ESPA solution to satisfy even the most challenging water treatment needs with exceptional performance, productivity and savings.

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ESPA-4611 Specifications:

Permeate Flow: 930gpd (3.5 m³/d)
Salt Rejection: 99.4% (98.0% minimum)
Configuration: Spiral Wound
Membrane Polymer: Composite Polyamide
Membrane Active Area: 31ft²

Elements are wet tested for quality assurance using the following conditions:

1500 PPM NaCl solution
150 psi (1.03 MPa) Applied Pressure
77°F (25°C) Operating Temperature
10% Permeate Recovery
6.5 – 7.0 pH Range
(Data taken after 30 minutes of operation)

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Standard Operating Limits:

Maximum Applied Pressure: 300 psig (2.1 MPa)
Maximum Chlorine Concentration: < 0.1 PPM
Maximum Operating Temperature: 113°F (45°C)
pH Range; Continuous (Cleaning): 3.0 –10.0*
Maximum Feedwater Turbidity: 1.0 NTU
Maximum Feedwater SDI (15 mins): 4.0
Maximum Feed Flow: 18 GPM (3.0 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. For specific projects, operating at more conservative values may ensure the best performance and longest life of the membrane. See Hydranautics Technical Bulletins for more detail on operation limits, cleaning pH, and cleaning temperatures.

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