LP22-8040 31

Summary

Product identification

LP22-8040/31 Low Pressure RO Membrane Elements- LP Series.

Application

This series is primarily used in the desalination of brackish water, featuring low operating pressure, high permeate flow, and high rejection. It performs well in rejecting soluble salt, TOC, and SiO₂.

Applications include:

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

Product Performance

• Model: LP22-8040/31
• Stable Rejection Rate: 99.7%
• Permeate Flow: 10500 GPD (39.7 m³/d)
• Active Membrane Area: 400 ft² (37.2 m²)
• Feed Spacer Thickness: 31 mil

Note: Performance is tested under the following conditions:

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

Operating Conditions & 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 SDI₁₅: 5

Mechanical / Hydraulic

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

Important Information

• Preservation: Dry membrane elements are shipped without preservation solution. Wet membrane elements use 1.0% sodium bisulfite (with 10% propylene glycol antifreeze added in winter) as a preservation solution and are vacuum packaged.
• Storage: Dry membrane elements must be maintained wet after initial soaking. Wet membrane elements not in use for extended periods require preservation solution.
• Initial Startup: Flush for 15-25 minutes at low pressure (do not soak overnight), then flush for 60-90 minutes at high pressure (water flow must be at least 50% of the system design flow). The permeate and concentrated water from the first hour of operation must be discharged.
• Warranty: The operating limits and guidelines provided are part of the limitations for the three-year warranty.
• Chemical Use: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited. Vontron Technology will not be liable for consequences arising from the use of such chemicals.
• Documentation: Refer to the Product Manual for detailed information on installation, commissioning, storage, and transportation.

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

Official datasheet (PDF)

PDF datasheet