LG BW 4021 ES

Summary

Product identification

LG Chem’s NanoH2O™ LG BW 4021 ES are brackish water Reverse Osmosis (RO) membranes. These are "Energy Saving" (ES) elements, offering high permeability at low feed pressure for reduced operating costs. They are suitable for low to medium salinity brackish water applications.

They incorporate innovative Thin Film Nanocomposite (TFN) technology, providing superior performance and intrinsic anti-fouling properties.

Product specifications

• Active Membrane Area: 34 ft² (3.2 m²)
• Permeate flow rate: 1,000 GPD (3.8 m³/d)
• Stabilized Salt Rejection: 99.5 %
• Minimum Salt Rejection: 99.2 %
• Feed Spacer: 28 mil

Test Conditions: 2,000 ppm NaCl at 25°C (77°F), 150 psi (10.3 bar), pH 7, Recovery 8%.

• Permeate flows for individual elements may vary +/-20%.

Operating limits

• Max. Applied pressure: 600 psi (41 bar)
• Max. Operating temperature: 45°C (113°F)
• pH Range, Continuous (Cleaning): 2-11 (2-12)
• Max. Pressure drop (ΔP) for each element: 15 psi (1.0 bar)

Feed water

• Max. Chlorine concentration: < 0.1 ppm
• Max. Feedwater turbidity: 1.0 NTU
• Max. Feedwater SDI (15 mins): 5.0
• Max. Feed flow: 16 gpm (3.6 m³/h)

Mechanical / hydraulic

The dimensions are as follows:

• A: 533 mm (21 in.)
• B: 100 mm (3.9 in.)
• C: 19 mm (0.75 in.)
• D: 29 mm (1.1 in.)
• Weight: 2.3 kg (5.1 lbs.)

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. Contractual data must match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet