VNF1 8040

Summary

Product identification

The VNF1-8040 is a Water Treatment Nanofiltration Membrane Element from the VNF Series.

Application

These nanofiltration membrane elements are primarily used for the purification of drinking water and industrial water, as well as the treatment of waste water. Specific applications include deep purification for direct drinking water, packaging water, and food water.

Product Performance

• Model: VNF1-8040
• Stable Rejection Rate: 98.0 %
• Permeate Flow: 10000 GPD (37.9 m³/d)
• Active Membrane Area: 400 ft² (37.2 m²)
• Feed Spacer Thickness: 28 mil

Performance test conditions:

• Operating pressure: 100 psi (0.69 MPa)
• MgSO₄ solution: 2000 mg/L
• Temperature: 25 ℃
• pH: 7.0 ± 0.5
• Recovery rate: 15%

Note: Each membrane element may exhibit a ±20% variation in 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: 3-10
• Allowed pH range for chemical cleaning: 2-12
• Maximum feedwater flow SDI₁₅: 5

Operating Conditions & Limits - Important information

• Preservation:
  • Dry membrane elements leave the factory without preservation solution but are vacuum packaged; they must be kept wet after initial soaking.
  • Wet membrane elements contain 1.0% sodium bisulfite (with an additional 10% propylene glycol antifreeze in winter) as a preservation solution and are vacuum packaged. If not used for a long time, preservation solution is needed to soak the elements.
• Initial Operation:
  • It is recommended to flush the membrane element first for 15-25 minutes at low pressure (not suitable for soaking overnight), followed by a 60-90 minute flush at high pressure (water flow should not be less than 50% of the system design flow).
  • The permeate water and concentrated water produced within the first hour of initial operation must be discharged.
• Warranty: The operating limits and guidelines provided are part of the limitations of the three-year warranty on the membrane element.
• Chemicals: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited.
• Further Details: 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 the provided text extraction, which may omit figures, footnotes, or the latest revisions. Contractual data for projects must match the specific OEM PDF revision used.

Official datasheet (PDF)

PDF datasheet