CSM RE8040-FE34

Summary

Product identification

The CSM RE8040-FE34 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
• Permeate flow rate: 10,500 GPD (39.7 m³/day)
• Nominal salt rejection: 99.7%
• Effective membrane area: 400 ft² (37.2 m²)
• Feed spacer thickness: 34 mil
• Minimum salt rejection: 99.4%

All elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box. Each membrane element is supplied with one brine seal, one interconnector (coupler), and four O-rings.

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 (Flux 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

Product water

• Permeate flow rate: 10,500 GPD (39.7 m³/day) (for individual elements, may vary by no more than 15%)
• Minimum salt rejection: 99.4%

Mechanical / hydraulic

• Model Name: RE8040-FE34
• Dimensions:
  • A: 40.0 inch (1,016 mm)
  • B: 8.0 inch (201 mm)
  • C: 1.12 inch (28 mm)
• Weight: 15 kg
• Part Numbers: 40000308, 40000309 (for inter-connector and brine seal)
• All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.

Test Conditions

The stated product performance is based on data taken after 30 minutes of operation at the following test conditions:

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

General Handling Procedures

• 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. 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.
• 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 OEM PDF datasheet. For contractual data, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet