CSM RE4040-SHF

Summary

Product identification

The RE 4040-SH F is a high-productivity reverse osmosis (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

The stated product 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), and pH 6.5–7.0.

• Permeate flow rate: 1,900 GPD (7.2 m³/day)
• Nominal salt rejection: 99.7%
• Minimum salt rejection: 99.6%
• Effective membrane area: 75 ft² (7.0 m²)

Permeate flow rate for each element may vary but will be no more than 20%.

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 (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 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

The above saturation limits are typically accepted by proprietary antiscalant manufacturers.

Mechanical / hydraulic

• Model Name: RE4040-SHF
• Length (A): 40.0 inch (1,016 mm)
• Diameter (B): 4.0 inch (102 mm)
• End connector dimensions (C, D, E): 0.75 inch (19.1 mm), 1.05 inch (26.7 mm), 1.05 inch (26.7 mm)

Each membrane element is supplied with one brine seal, one interconnector (coupler), and four o-rings. All RE4040 elements fit nominal 4.0 inch (102 mm) I.D. pressure vessels.

General Handling Procedures

• Elements in boxes 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 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. Use of incompatible chemicals may void the element limited warranty.
• 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. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet