CSM RE8040-FLR440

Summary

Product identification

This is a fouling resistant RO element with low pressure for brackish water and wastewater reuse.

• Model Name: RE8040-FLR440
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide (PA)
• Element configuration: Spiral-Wound, FRP Wrapping
• Part Number: 40000308 (for interconnector), 40000309 (for brine seal)
• All RE8040 elements fit nominal 8.0 inch (201 mm) I.D. pressure vessels.
• The RE8040-FLR440 element can also be made with a 1.5 inch (38 mm) diameter central pipe.
• Each membrane element is supplied with one brine seal, one interconnector (coupler), and four o-rings.
• All elements are vacuum sealed in a polyethylene bag containing 1.0% SBS (sodium bisulfite) solution and individually packaged in a cardboard box.

Specifications

• Permeate flow rate: 9,900 GPD (37.4 m³/day)
• Nominal salt rejection: 99.6%
• Effective membrane area: 440 ft² (40.9 m²)
• Minimum salt rejection: 99.4%
• Permeate flow rate for each element may vary but will be no more than 15%.

Stated product performance is based on data taken after 30 minutes of operation at the following test conditions:

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

Dimensions and Weight

• Model Name: RE 8040-FLR440
• A: 40.0 inch (1,016 mm)
• B: 8.0 inch (201 mm)
• C: 1.12 inch (28 mm)
• Weight: 15 kg

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 rate 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. It is the user’s responsibility to ensure proper chemical(s) and concentration are dosed ahead of the membrane system to prevent scale formation anywhere within the membrane system. Membrane elements fouled or damaged due to scale formation are not covered by the limited warranty.

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 (i.e., 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. Use of such chemicals may void the element limited warranty.
• Permeate pressure must always be equal 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