The XLP series of ultra-low pressure aromatic polyamide compound RO membranes can operate at ultra-low pressures to achieve the same flux as conventional low-pressure membrane elements and a cleaning efficiency of up to 99.0%. The XLP series can be effectively used for desalination of low salinity (NaCl ≤1000 ppm) surface water, groundwater, tap water and municipal water.
The XLP series of membrane elements is particularly suited for secondary desalination with a two-way reverse osmosis system and is mainly used for pure water production, boiler water make-up, food processing and the pharmaceutical industry.
Characteristics
Active membrane area, square metres (sq.m.) 90 (8.4)
Average permeability, GPD (cubic metres per day) 2 000 (7.6)
Water treatment efficiency,% 98.0
Min. rejection rate,% 97.5
Test conditions
Test pressure 100 psi (0,69 MPa)
Test solution temperature 25 °C
Test solution concentration (NaCl) 500 ppm
Test solution pH value 7,5
Recovery rate per membrane element 0,15
Operating limits and conditions
Max. Working pressure 600 psi (4.14 MPa)
Max. Water supply volume 16 gpm (3.6 m3 /h)
Max. Max. supply water temperature 45°C
Max. Supply water SDI15 5
Supply water pH range during continuous operation 3 ≈ 10
Supply water pH range during chemical cleaning 2 ≈ 12
Supply water residual chlorine concentration <0.1 ppm
Max. 15 psi (0.1 MPa) pressure drop per membrane element
Max. Pressure drop per pressure vessel with six RO membrane elements 50 psi (0.34 MPa)
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