CSM RE4040-FE

Summary

Product Identification

The CSM RE4040-FE n is an enhanced fouling resistant reverse osmosis (RO) element designed for brackish water and wastewater reuse applications.

• Part Numbers: 40000305, 40000306

General Features

• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping
• Vacuum sealed: In a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution.
• Packaging: Individually packaged in a cardboard box.
• Included accessories: Each element is supplied with one brine seal, one interconnector (coupler), and four O-rings.
• Pressure vessel fit: All RE4040 elements fit nominal 4.0 inch (102 mm) I.D. pressure vessels.

Performance Specifications

(Based on 30 minutes of operation at 2,000 mg/L NaCl solution, 225 psig (1.5 MPa) applied pressure, 15% recovery, 77 °F (25 °C), pH 6.5–7.0)

• Permeate flow rate: 2,400 GPD (9.1 m³/day)
• Nominal salt rejection: 99.7%
• Effective membrane area: 85 ft² (7.9 m²)
• Minimum salt rejection: 99.5%
• Permeate flow rate variation: No more than 15%

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: 18 gpm (4.09 m³/hr)
• Min. Concentrate Flow Rate: 4 gpm (0.91 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

Design Flux (gfd) 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

• A (Overall Length): 40.0 inch (1,016 mm)
• B (Element Diameter): 4.0 inch (102 mm)
• C (Permeate Tube ID): 0.75 inch (19.1 mm)
• D (Interconnector Length): 1.05 inch (26.7 mm)
• E (Brine Seal Lip-to-lip): 1.05 inch (26.7 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.
• 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 (i.e., 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 solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions found in the official PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet