CSM RE8040-SHF

Summary

Product identification

The RE8040-SHF 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

Product water

The stated performance is based on specific test conditions.

• Permeate flow rate: 9,000 GPD (34.1 m³/day)
• Nominal salt rejection: 99.7%
• Minimum salt rejection: 99.6%
• Permeate flow rate variation: No more than 15%

Performance Test Conditions:

• NaCl solution concentration: 32,000 mg/L
• Applied pressure: 800 psig (5.5 MPa)
• Recovery: 8%
• Temperature: 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: 1,200 psi (8.27 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:

• 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

• Effective membrane area: 370 ft² (34.4 m²)
• Dimensions (RE 8040-SHF):
  • Length (A): 40.0 inch (1,016 mm)
  • Diameter (B): 8.0 inch (201 mm)
  • Center tube ID (C): 1.12 inch (28 mm)
• Weight: 15 kg
• Fit: All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.
• Accessories: Each membrane element is supplied with one brine seal and one interconnector (coupler) with four o-rings.

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. Damage caused by permeate back pressure voids the element limited warranty.

---

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