LG SW 440 ES

High Flux Seawater Reverse Osmosis (SWRO) Membranes



LG Chem’s NanoH2O™ energy saving ES membranes lower the cost of desalination by improving energy efficiency and productivity, offering the highest flux and salt rejection in their class. These high flux membranes are well suited for low temperature seawater and two-pass systems.

  • Higher flux with requisite salt rejection
  • Standard 8-inch spiral wound element design
  • Easy to retrofit existing RO plants
  • NSF Standard 61 Certification 

Product Specifications

LG SW 440 ES
Active Membrane Area 41 m² (440 ft²)
Permeate Flow Rate 57 m³/d (15,070 gpd)
Minimum NaCI Rejection 99.6%
Stabilized NaCI Rejection 99.8%
Feed Spacer 28mil
Stabilized Boron Rejection 89.0
Note: the above values are normalized to the following conditions: 32,000 ppm NaCl, 5 ppm boron, 800 psi (5.5 MPa), 77°F (25°C), pH 8, 8% recovery. Permeate flows for individual elements may vary +/- 15%.

Operating Specifications

LG SW 440 ES
Max. Applied Pressure 8.27 MPa (1,200 psig)
Max. Chlorine Concentration < 0.1 ppm
Max. Operating Temperature 45°C (113°F)
pH Range, Continuous (Cleaning) 2-11 (2-13)
Max. Feedwater Turbidity 1.0 NTU
Max. Feedwater SDI (15 minutes) 5.0
Max. Feed Flow 17.0 m³/h (75 GPM)
Min. Ratio of Concentrate to Permeate Flow for any Element 5:1
Max. Pressure Drop for Each Element 1.0 bar (15 psi)

Product Dimensions

LG SW 440 ES
Length 101.6 cm (40 in.)
Element Outside Diameter (O.D.) 200 mm (7.9 in.)
Permeate Tube Inside Diameter (I.D.) 28.6 mm (1.125 in.)
Weight 16.4 kg (36 lbs.)