CSM RO membrane RE2521-BLN (300GPD)

RE 2521-BLN
Low pressure grade RO element for brackish water

SPECIFICATIONS

General Features:

• Permeate flow rate: 300 GPD ( 1.1 m3/day)
• Stabilized salt rejection: 99.2%
• Effective membrane area: 12 ft2 (1.1 m2)
• Membrane type: Thin-Film Composite
• Membrane material: Polyamide(PA)
• Element configuration: Spiral-Wound, FRP Wrapping

APPLICATION DATA

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 - 6 gpm (1.36 m3/hr)
• Min. Concentrate Flow Rate - 1 gpm (0.23 m3/hr)
• Max. Operating Temperature - 113 oF (45 oC)
• 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

Design Guidelines for VariousWater 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
• CaSO 4 - 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.