CSM RE8040-FE

Summary

Product identification

The RE8040-FEn is an enhanced fouling resistant reverse osmosis (RO) element designed for brackish water and wastewater reuse applications.

• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping
• Model Name: RE8040-FEn
• Part Numbers: 40000308, 40000309
• Dimensions:
  • Length: 40.0 inch (1,016 mm)
  • Diameter: 8.0 inch (201 mm)
  • Inner Diameter (C): 1.12 inch (28 mm)
• Weight: 15 kg
• Accessories per element: One brine seal, one interconnector (coupler), and four o-rings.
• Vessel compatibility: Fits nominal 8.0 inch (201 mm) I.D. pressure vessels.

Specifications

• Permeate flow rate: 10,500 GPD (39.7 m³/day)
  • Permeate flow rate for each element may vary but will be no more than 15%.
• Nominal salt rejection: 99.7%
• Minimum salt rejection: 99.4%
• Effective membrane area: 400 ft² (37.2 m²)

Stated performance is based on the following test conditions (after 30 minutes of operation):

• 2,000 mg/L NaCl solution
• 225 psig (1.5 MPa) applied pressure
• 15% recovery
• 77 °F (25 °C)
• pH 6.5–7.0

Packaging: Elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box.

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

Design Guidelines for Various Water Sources (Flux rates in gfd)

• 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

General Handling Procedures

• Storage: Elements in boxes must be kept dry at room temperature (7–32 °C; 40–95 °F) and should not be stored in direct sunlight.
• Damaged Packaging: If the polyethylene bag is damaged, a new preservative solution (sodium bisulfite) must be added and air-tight sealed to prevent drying and biological growth.
• Initial Operation: Permeate from the first hour of operation should be discarded to flush out the preservative solution.
• Long-Term Storage/Shutdowns: 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).
• Short-Term Storage: For short term storage (one week or less), 1% by weight sodium metabisulfite solution is adequate for preventing biological growth.
• Moisture: Keep elements moist at all times after initial wetting.
• Pressure/Flow: Avoid excessive pressure and flow spikes.
• Chemical Compatibility: Only use chemicals compatible with the membrane elements and components. Use of incompatible chemicals may void the element limited warranty.
• Permeate Pressure: Permeate pressure must always be equal to or less than the feed/concentrate pressure. Damage caused by permeate back pressure voids the element limited warranty.

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

Official datasheet (PDF)

PDF datasheet