CSM RE8040-UL440

Summary

Product identification

This is a low-pressure grade RO element with extended area for ultra-pure water.

• Model Name: RE8040-UL440
• Permeate flow rate: 11,000 GPD (41.6 m³/day)
• Nominal salt rejection: 99.5%
• Minimum salt rejection: 98.5%
• Effective membrane area: 440 ft² (40.9 m²)
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping
• Packaging: All elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box. Each membrane element is supplied with one brine seal, one interconnector (coupler), and four o-rings.
• Central pipe option: RE8040-UL440 element can also be made with a 1.5 inch (38 mm) diameter central pipe.

Performance Test Conditions (NaCl solution):

• 1,500 mg/L NaCl solution
• 150 psig (1.0 MPa) applied pressure
• 15% recovery
• 77 °F (25 °C)
• pH 6.5 – 7.0

Performance Test Conditions (IPA solution):

• IPA rejection: 92.0%
• 1,000 mg/L IPA solution
• 225 psig (1.5 MPa) applied pressure
• 15% recovery
• 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: 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

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

Mechanical / hydraulic

• Dimensions:
  • Length (A): 40.0 inch (1,016 mm)
  • Diameter (B): 8.0 inch (201 mm)
  • Permeate tube diameter (C): 1.12 inch (28 mm)
• Weight: 15 kg
• All RE8040 elements fit nominal 8.0 inch (201 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 out of direct sunlight.
• If the polyethylene bag is damaged, a new preservative solution (sodium bisulfite) must be added and air-tight sealed.
• Discard permeate from the first hour of operation to flush out the preservative solution.
• Elements should be immersed in a preservative solution during storage, shipping, and system shutdowns. 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.

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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