LG Chem Brackish (BW) & Seawater (SW) RO Membranes

Lowering the Cost of Desalination

LG Membrane Photo
LG Membrane Photo 2

LG Chem Water Solutions has set a new standard for membrane productivity within the reverse osmosis desalination industry. Utilizing patent-pending thin-film nanocomposite membranes, LG Chem’s spiral-wound NanoH2O membrane elements deliver the highest flux and energy efficiency when compared to the current installed base. Extensive research and development in innovative technologies allow LG to manufacture membrane materials that demonstrate increased permeability and/or increased salt rejection, fundamentally changing the economics of desalination.

quantumflux membrane construction

Our LG Chem Brackish and Seawater reverse osmosis membranes feature nanomaterials incorporated into the thin-film polyamide composite layer that improve membrane energy efficiency and productivity. The innovative patented technology significantly increases membrane permeability, increases flow, and reduces energy consumption, while matching best-in-class salt rejection.

LG Chem water anti-fouling membranes also feature proprietary chemistry to inhibit adsorption of biological and organic materials.

LG CHEM 4 INCH and 8 INCH BRACKISH (BW) RO MEMBRANES

LG Chem Water Solutions develops, manufactures and markets the next generation of BWRO elements for water treatment. We offer industry-standard 8-inch and 4-inch element configurations that retrofit easily into standard pressure vessels.
Model Number Membrane Area Element Diameter Permeate Flow Rate StabilizedNaCl Rejection Feed Spacer
LG BW 400 ES 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil
LG BW 440 ES 41 m² (440 ft²) 20 cm (8 in) 43.7 m³/d (11,500 gpd) 99.6% 28 mil
LG BW 4040 ES 7.9 m² (85 ft²) 10 cm (4 in) 9.5 m³/d (2,500 gpd) 99.5% 28 mil
LG BW 400 R 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil
LG BW 440 R 41 m² (440 ft²) 20 cm (8 in) 43.7 m³/d (11,500 gpd) 99.6% 28 mil
LG BW 4040 R 7.9 m² (85 ft²) 10 cm (4 in) 9.5 m³/d (2,500 gpd) 99.6% 28 mil
LG BW 400 AFR 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil
LG BW 4040 AFR 7.4 m² (80 ft²) 10 cm (4 in) 8.7 m³/d (2,300 gpd) 99.6% 34 mil

LG CHEM 8 INCH SEAWATER (SW) RO MEMBRANES

LG Chem Water Solutions develops, manufactures and markets the next generation of SWRO elements for desalination. We offer industry-standard 8-inch element configurations that retrofit easily into standard pressure vessels.
Model Number Membrane Area Element Diameter Permeate Flow Rate StabilizedNaCl Rejection Stabilized Boron Rejection
LG SW 400 ES 37 m² (400 ft²) 8 inches 52 m³/d (13,700 gpd) 99.8% 89%
LG SW 440 ES 41 m² (440 ft²) 8 inches) 57 m³/d (15,070 gpd) 99.8% 89%
LG SW 400SR 37 m² (400 ft²) 8 inches 22.7 m³/d (6,000 gpd) 99.85% 93%
LG SW 440 SR 41 m² (440 ft²) 8 inches) 25 m³/d (6,600 gpd) 99.85% 93%
LG SW 400 GR 37 m² (400 ft²) 8 inches 28.4 m³/d (7,500 gpd) 99.85% 93%
LG SW 440 GR 41 m² (440 ft²) 8 inches 31.2 m³/d (8,250 gpd) 99.85% 93%
LG sW 400 R 37 m² (400 ft²) 8 inches 34 m³/d (9,000 gpd) 99.85% 93%
LG sW 440 R 41 m² (440 ft²) 8 inches 37 m³/d (9,900 gpd) 99.85% 93%

The above values are normalized to the following test conditions: 32,000 ppm NaCI, 5 ppm Boron, 5.5 MPa (800 psi), 25°C(77°F), pH 8, 8% recovery. Permeate flows for individual elements may vary -/+ 15%.