LP22-8040-440

Summary

Product identification

LP22-8040-440 Low Pressure RO Membrane Elements (LP Series) are primarily used in the desalination of brackish water. This series offers low operating pressure, high permeate flow, and high rejection. It performs well in rejecting soluble salt, TOC, and SiO₂.

Application

• Industrial pure water production, e.g., electric power, steel, chemical industry.
• Desalination of drinking water, e.g., pure water, packaged water.

Product Performance

Test Conditions:

• Operating pressure: 225 psi (1.55 MPa)
• Feed solution: 2000 mg/L NaCl
• Temperature: 25℃
• pH: 7.0 ± 0.5
• Recovery rate: 15%
• Note: Each membrane element may have ±15% variation of permeate flow.

Operating limits

• Maximum operating pressure: 600 psi (4.14 MPa)
• Maximum feedwater temperature: 45 ℃
• Maximum inlet flow rate: 17 m³/h
• Maximum concentration of free chlorine: 0.1 mg/L
• Maximum pressure drop per element: 15 psi (0.1 MPa)
• Allowed pH range for feedwater in operation: 2-11
• Allowed pH range for chemical cleaning: 1-13
• Maximum feedwater flow SDI₁₅: 5

General Operating & Preservation Notes

• Preservation: Dry membrane elements have no preservation solution at the factory. Wet membrane elements contain 1.0% sodium bisulfite (with 10% propylene glycol antifreeze in winter) as a preservation solution.
• Storage: Dry membrane elements must be kept wet after initial soaking. Wet membrane elements not in use for extended periods require preservation solution.
• Initial Flush: Recommended to flush for 15-25 minutes at low pressure (not for soaking/overnight), then 60-90 minutes at high pressure (water flow not less than 50% of system design).
• First Hour of Operation: Permeate water and concentrated water from the first hour of initial operation must be discharged.
• Warranty: The operating limits and operational guidelines specified herein are part of the limitations of the three-year membrane element warranty.
• Chemical Use: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited.
• Documentation: Refer to the Product Manual for detailed information on installation, commissioning, storage, and transportation of membrane elements.

Mechanical / Hydraulic

• Packing Carton (L:W:H): 1080×216×232mm
• Connector material number: 3.02.09.0006

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet