LG BW 4021 UES

Summary

Product identification

LG Chem's LG BW 4021 UES are brackish water reverse osmosis (RO) membranes, featuring Ultra Low Energy performance. They incorporate innovative Thin Film Nanocomposite (TFN) technology, providing superior performance and intrinsic anti-fouling properties, suitable for applications requiring consistent and reliable performance. These membranes offer high permeability at ultra-low feed pressure, significantly reducing operating costs for low salinity brackish water applications.

Product Specifications

• Active Membrane Area: 34 ft² (3.2 m²)
• Permeate flow rate: 1,000 GPD (3.8 m³/d)
• Stabilized Salt Rejection: 99.0%
• Minimum Salt Rejection: 98.0%
• Feed Spacer: 28 mil

Test Conditions: 500 ppm NaCl at 25°C (77°F), 100 psi (6.9 bar), pH 7, Recovery 8%. Permeate flows for individual elements will vary with no less than 85% of the specified datasheet flow.

Mechanical / Hydraulic

Product dimensions and weight 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.)

Operating limits

• Max. Applied pressure: 600 psi (41 bar)
• Max. Chlorine concentration: < 0.1 ppm
• Max. Operating temperature: 45°C (113°F)
• pH Range, Continuous (Cleaning): 2-11 (2-12)
• Max. Feedwater turbidity: 1.0 NTU
• Max. Feedwater SDI (15 mins): 5.0
• Max. Feed flow: 16 gpm (3.6 m³/h)
• Max. Pressure drop (ΔP) for each element: 15 psi (1.0 bar)

Disclaimer: The information and data contained herein are deemed to be accurate and reliable and are offered in good faith, but without guarantee of performance. LG Chem assumes no liability for results obtained or damages incurred through the application of the information contained herein. Customer is responsible for determining whether the products and information presented herein are appropriate for the customer’s use and for ensuring that customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Specifications subject to change without notice. NanoH2O is the Trademark of The LG Water Solutions or an affiliated company of LG Chem. All rights reserved. © LG Chem, Ltd.

Official datasheet (PDF)

PDF datasheet