LG SW 400 GR

High Rejection Seawater Reverse Osmosis (SWRO) Membranes

LG Chem’s NanoH2OTM thin-film nanocomposite (TFN) membranes lower water treatment costs by improving energy efficiency and productivity. These membranes feature benign nanomaterials incorporated into the thin-film polyamide layer of a composite membrane. This innovative patent-pending technology significantly increases membrane permeability and improves salt rejection.

    • Industry-standard flux with highest salt rejection
    • Standard 8-inch spiral wound element design
    • Easy to retrofit existing RO plants
    • Available with either 28 or 34 mil spacer
    • NSF Standard 61 Certification 


Product Specifications

LG SW 400 GR
Active Membrane Area 37 m² (400 ft²)
Permeate Flow Rate 28.4 m³/d (7,500 gpd)
Minimum NaCI Rejection 99.7%
Stabilized NaCI Rejection 99.85%
Feed Spacer 28 or 34 mil
Stabilized Boron Rejection 93.0
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 400 GR
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 400 GR
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.)