Lanxess – RO Membrane – Lewabrane RO S085 HR 4040

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The Lewabrane® RO S085 HR 4040 elements are spiral wound, composite polyamide membrane elements designed for industrial water treatment applications. The Lewabrane® FR elements are designed to provide more turbulence in the feedwater spacer in combination with the high crosslinked low surface charge Lewabrane membrane. These new RO elements are recommended for brackish and low salinity feedwaters that are expected to have higher biological and organic fouling tendencies.


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Manufacturer Lanxess
Series Lewabrane
Model Number RO S085 HR 4040
Part Number RO S085 HR 4040
Description Feed spacer thickness = 31 mil (0.8 mm)
Membrane area = 85 ft2 (7.9 m2)
Salt rejection, av. = 99.8 %
Salt rejection, min. = 99.6 %
Boron refection, typical = 93.0%
Permeate flow rate, av. = 1380 gpd (5.2 m3/d)
Permeate flow rate, min.= 1100 gpd (4.2 m3/d)
Key Features Operating pressure, max. = 1200 psi (83 bar)
Operating temperature, max. = 113 °F (45 °C)
Feed water SDI, max. = 5
pH range during operating = 2-11
pH range during cleaning = 1-12
Pressure drop per element, max. = 15 psi (1.0 bar)
Pressure drop per vessel, max. = 50 psi (3.5 bar)
Chlorine concentration, max. = 0.1 ppm
Overall Length 40" (1016mm)

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