Replacement Membranes Reverse Osmosis for Seawater

Seawater Reverse Osmosis (SWRO)

LG SW 4040 R

Reverse Osmosis LG Chem Membranes Seawater

LG Chem’s NanoH20™ seawater RO membranes, incorporated with innovative Thin Film Nanocomposite (TFN) technology, deliver industry-leading salt rejection and 20% more flow than the membranes manufactured from conventional technologies. Our seawater RO membranes significantly reduce the cost of desalination while delivering superior water quality. In LG Chem, we do our utmost to fulfill customer needs and provide additional value from excellent commercial and technical supports. With state-of-the-art technology and customer focus, LG Chem has been awarded more than 3,000 Million Liter per Day (MLD) seawater projects since its establishment.

LG SW R (High Rejection) membranes offer a combination of high rejection and low energy requirements to reduce the total cost of desalination; suitable for medium to high salinity seawater applications.

LG SW 4040 R

Active Membrane Area, ft² (m²)  Permeate Flow Rate, GPD (m³/d) Stabilized Salt Rejection, % Minimum Salt Rejection, % Feed Spacer, mil
80 (7.4) 1,950 (7.4) 99.7 99.5 28
Test Conditions: 32,000 ppm NaCl at 25°C (77°F), 800 psi (55 bar), pH 8, Recovery 8%.
Permeate flows for individual elements may vary +/-20%.

Operating Specifications

Max. Applied pressure  1,200 psi (82.7 bar)
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 mins) 5.0
Max. Feed flow  15 gpm (3.4 m3/h)
Min. Ratio of concentrate to permeate flow for any element 5 : 1
Max. Pressure drop (ΔP) for each element  15 psi (1.0 bar)

Product Dimensions

A, mm (in.) B, mm (in.) C, mm (in.) D, mm (in.)  Weight, kg (lbs.)










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