CSM RE2540-CE

Summary

Product Identification

This is an innovative chlorine-resistant RO element designed for prolonged membrane lifetime.

• Model Name: RE 2540-CE
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping

Specifications

• Permeate flow rate: 600 GPD (2.3 m³/day)
• Stabilized salt rejection: 99.5%
• Minimum salt rejection: 99.0%
• Effective membrane area: 27 ft² (2.5 m²)

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

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: 6 gpm (1.36 m³/hr)
• Min. Concentrate Flow Rate: 1 gpm (0.23 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
• Free Chlorine Tolerance: 5,000 ppm·hr

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

Each membrane element (Part Number: 40000305) is supplied with one brine seal, one interconnector (coupler - Part Number: 40000223), and four o-rings. All RE2540 elements fit nominal 2.5 inch (64 mm) I.D. pressure vessels.

Dimensions for Model RE 2540-CE:

• A: 40.0 inch (1,016 mm)
• B: 2.5 inch (64 mm)
• C: 0.75 inch (19.1 mm)
• D: 1.1 inch (28 mm)
• E: 1.1 inch (28 mm)

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 to prevent drying and biological growth.
• 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 (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.

Disclaimer: This summary is based on text extracted from an OEM PDF datasheet. It may not include all figures, footnotes, or the latest revisions. For contractual purposes, data must match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet