CSM RE8040-SHA440

Summary

Product identification

This is a high productivity RO element with extended area for seawater and high salinity well water.

• Model Name: RE8040-SHA440
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping

Performance Specifications

• Permeate flow rate: 8,250 GPD (31.2 m³/day)
• Nominal salt rejection: 99.75%
• Effective membrane area: 440 ft² (40.9 m²)
• Minimum salt rejection: 99.6%
• Boron rejection: 92.0% (at pH 8.0 and 5 mg/L boron feed)

Test Conditions (for stated performance):

• 32,000 mg/L NaCl solution
• 800 psig (5.5 MPa) applied pressure
• 8% recovery
• 77 °F (25 °C)
• pH 6.5–7.0

Notes:

• Permeate flow rate for each element may vary but will be no more than 15%.
• Elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box.

Mechanical / Hydraulic

• Model Name: RE8040-SHA440
  • A (length): 40.0 inch (1,016 mm)
  • B (diameter): 8.0 inch (201 mm)
  • C (interconnector): 1.12 inch (28 mm)
  • Weight: 15 kg
  • Part Number (Interconnector): 40000308
  • Part Number (Brine Seal): 40000309
• Each membrane element supplied with one brine seal, one interconnector (coupler) and four o-rings.
• All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.

Operating Limits

• Max. Pressure Drop / Element: 15 psi (0.1 MPa)
• Max. Pressure Drop / 240” Vessel: 60 psi (0.41 Mpa)
• Max. Operating Pressure: 1,200 psi (8.27 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

• 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

Feed Water 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

Handling and Storage

• Elements in boxes must be kept dry at room temperature (7–32 °C; 40–95 °F) and out of direct sunlight.
• If the polyethylene bag is damaged, add a new preservative solution (sodium bisulfite) and air-tight seal to prevent drying and biological growth.
• Discard permeate from the first hour of operation 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 (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, as incompatible chemicals may void the warranty.
• Permeate pressure must always be equal to or less than the feed/concentrate pressure; damage from permeate back pressure voids the warranty.

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Disclaimer: This summary is based on the provided text extract. The original PDF may contain additional figures, footnotes, or more recent revisions. For contractual purposes, data must match the official OEM PDF revision used on the specific project.

Official datasheet (PDF)

PDF datasheet