CSM NE8040-90

Summary

Product identification

This is a normal grade NF element with high monovalent ion rejection.

• Model Name: NE8040-90
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping
• Part Number (Element): 40000308
• Part Number (Inter-connector): 40000309

Product water

The stated performance is based on data taken after 30 minutes of operation.

• Permeate flow rate: 7,500 GPD (28.4 m³/day)
  • Test conditions for monovalent ions: 2,000 mg/L NaCl solution at 75 psig (0.5 MPa) applied pressure, 15% recovery, 77 °F (25 °C), pH 6.5–7.0.
• Monovalent ion rejection (NaCl): 85.0 – 95.0%
• Divalent ion rejection (CaCl₂): 90.0 – 95.0%
  • Test conditions for divalent ions: 500 mg/L CaCl₂ solution at 75 psig (0.5 MPa) applied pressure, 15% recovery, 77 °F (25 °C), pH 6.5–7.0.
• MgSO₄ rejection: 97.0% (Test conditions are equivalent with NaCl)
• Effective membrane area: 400 ft² (37.2 m²)

Operating limits

• Max. Pressure Drop / Element: 15 psi (0.1 MPa)
• Max. Pressure Drop / 240” Vessel: 60 psi (0.41 MPa)
• Max. Operating Pressure: 600 psi (4.14 MPa)
• Max. Feed Flow Rate: 75 gpm (17.0 m³/hr)
• Min. Concentrate Flow Rate: 16 gpm (3.6 m³/hr)
• Max. Operating Temperature: 113 °F (45 °C)
• Operating pH Range: 2.0–11.0
• CIP pH Range: 1.0–13.0
• Max. Turbidity: 1.0 NTU
• Max. SDI (15 min): 5.0
• Max. Chlorine Concentration: < 0.1 mg/L

Feed water

Design Guidelines for Various Water Sources:

• Wastewater Conventional (SDI < 5): 8–12 gfd
• Wastewater Pretreated by UF/MF (SDI < 3): 10–14 gfd
• Seawater, Open Intake (SDI < 5): 7–10 gfd
• Seawater, Beach Well (SDI < 3): 8–12 gfd
• Surface Water (SDI < 5): 12–16 gfd
• Surface Water (SDI < 3): 13–17 gfd
• Well water (SDI < 3): 13–17 gfd
• RO permeate (SDI < 1): 21–30 gfd

Saturation Limits (Using Antiscalants):

• Langlier Saturation Index (LSI): <+1.5
• Stiff and Davis Saturation Index (SDSI): <+0.5
• CaSO₄: 230% saturation
• SrSO₄: 800% saturation
• BaSO₄: 6,000% saturation
• SiO₂: 100% saturation

Mechanical / Hydraulic

• Dimensions:
  • A: 40.0 inch (1,016 mm)
  • B: 8.0 inch (201 mm)
  • C: 1.12 inch (28 mm)
• Weight: 15 kg
• All NE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.
• Each membrane element is supplied with one brine seal, one interconnector (coupler) and four o-rings.

Handling and Storage

• Elements must be kept dry at room temperature (7–32 °C; 40–95 °F) and should not be stored in direct sunlight.
• If the polyethylene bag is damaged, a new preservative solution (sodium bisulfite) must be added and air-tight sealed.
• Permeate from the first hour of operation should be discarded to flush out the preservative solution.
• Elements should be immersed in a preservative solution during storage, shipping, and system shutdowns to prevent biological growth and freezing. The standard storage solution contains 1% by weight sodium bisulfite or sodium metabisulfite (food grade). For short term storage (i.e., one week or less), 1% by weight sodium metabisulfite solution is adequate.
• Keep elements moist at all times after initial wetting.
• Avoid excessive pressure and flow spikes.
• Only use chemicals compatible with the membrane elements and components.
• Permeate pressure must always be equal to or less than the feed/concentrate pressure.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet