CSM RE4040-SHA

Summary

Product identification

The CSM RE 4040-SH A is a high productivity RO element designed for seawater and high salinity well water applications.

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

Specifications

• Permeate flow rate: 1,400 GPD (5.3 m³/day)
• Nominal salt rejection: 99.75%
• Effective membrane area: 74 ft² (6.9 m²)
• Minimum salt rejection: 99.6%
• Boron rejection: 92.0% (at pH 8.0 and 5 mg/L boron feed)
• Permeate flow rate variation: No more than 20% between elements.
• Packaging: Vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution, individually packaged in a cardboard box.

Performance is based on data taken after 30 minutes of operation at the following test conditions:

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

Dimensions

The RE4040-SHA element fits nominal 4.0 inch (102 mm) I.D. pressure vessels. Each element is supplied with one brine seal, one interconnector (coupler), and four 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: 1,200 psi (8.27 MPa)
• Max. Feed Flow Rate: 18 gpm (15.0 m³/hr)
• Min. Concentrate Flow Rate: 4 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

• 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

• Elements must be kept dry at room temperature (7–32°C; 40–95°F) and not 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 (1% by weight sodium bisulfite or sodium metabisulfite, food grade) during storage, shipping, and system shutdowns to prevent biological growth and freezing.
• 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 to avoid damage.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet