CSM RE8040-BN

Summary

Product Identification

This is a low pressure grade reverse osmosis (RO) element, model RE8040-BN, with a thick feed spacer, designed for brackish water applications.

Product Water Specifications

• Permeate flow rate (Nominal): 9,500 GPD (36.0 m³/day)
• Nominal salt rejection: 99.7%
• Minimum salt rejection: 99.4%
• Effective membrane area: 365 ft² (33.9 m²)

Performance Test Conditions: The stated performance is based on 30 minutes of operation at these conditions:

• NaCl solution: 2,000 mg/L
• Applied pressure: 225 psig (1.5 MPa)
• Recovery: 15%
• Temperature: 77 °F (25 °C)
• pH: 6.5–7.0

Membrane Characteristics

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

Mechanical / Hydraulic

• Dimensions (RE8040-BN):
  • A: 40.0 inch (1,016 mm)
  • B: 8.0 inch (201 mm)
  • C: 1.12 inch (28 mm)
• Weight: 15 kg
• Fitment: All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.

Included Accessories: Each membrane element is supplied with:

• One brine seal (Part Number: 40000309)
• One interconnector (coupler) (Part Number: 40000308)
• Four o-rings

Packaging: Elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box.

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: 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 Guidelines

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 out of 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 for preventing biological growth.
• 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 prevent damage caused by permeate back pressure.

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

Official datasheet (PDF)

PDF datasheet