VNF1 2540

Summary

Product identification

• Product Name: VNF1-2540
• Series: VNF Series Water Treatment Nanofiltration Membrane Elements
• Application: Mainly used for the purification of drinking water and industrial water, and treatment of waste water.
  • Deep purification of drinking water, such as: direct drinking water, packaging water, food water, etc.

Operating limits

• Maximum operating pressure: 600 psi (4.14 MPa)
• Maximum feedwater temperature: 45 ℃
• Maximum inlet flow rate: 1.4 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: 3-10
• Allowed pH range for chemical cleaning: 2-12
• Maximum feedwater flow SDI₁₅: 5

Product water

The following performance is based on specific test conditions:

• Model: VNF1-2540
• Stable Rejection Rate: 98.0 %
• Permeate Flow: 650 GPD (2.5 m³/d)
• Active Membrane Area: 28 ft² (2.6 m²)
• Feed Spacer Thickness: 28 mil

Test Conditions for Product Performance:

• Operating pressure: 100 psi (0.69 MPa)
• Feed solution: 2000 mg/L MgSO₄
• Temperature: 25 ℃
• pH: 7.0 ± 0.5
• Recovery rate: 15%
• Note: Each membrane element may have ±20% variation of permeate flow.

Mechanical / hydraulic

• Packing carton (L:W:H): 1059×90×100mm
• Connector material number: 3.02.09.0003

Important information

• Membrane Preservation:
  • Dry membrane elements leave the factory without preservation solution and are vacuum packaged. They should always be maintained wet after soaking.
  • Wet membrane elements have 1.0% sodium bisulfite (in winter, 10% of propylene glycol antifreeze is added) as the preservation solution for storage treatment and are vacuum packaged. When not used for a long time, preservation solution is needed to soak the elements.
• Initial Start-up Procedure:
  • It is recommended to flush the membrane for 15-25 minutes at low pressure (not suitable for soaking or soaking overnight).
  • Follow with flushing for 60-90 minutes at high pressure (water flow should not be less than 50% of the system design water flow).
  • The permeate water and concentrated water within the first hour of the initial operation should all be discharged.
• Warranty: The operating limits and operational guidelines given in this technical information are part of the limitations of the three-year warranty on the membrane element.
• Chemical Restrictions: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited.

Disclaimer: This summary is based on the provided text extraction. It may not include all figures, footnotes, or the latest revisions found in the official PDF. Contractual data should always match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet