CSM reverse osmosis membrane RE4021-BLN (1050GPD)

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Product SKU: RE4021-BLN

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Description

Technical data

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RE 4021-BLN

Low pressure grade reverse osmosis element for brackish water.

General Features:

Permeate flow rate: 1,050 GPD ( 4.0 m3/day)
Nominal salt rejection: 99.2%
Effective membrane area: 35 ft2 (3.3 m2)
Мembrane 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 - 13 gpm (2.95 m3/hr)
Min. Concentrate Flow Rate - 3 gpm (0.68 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 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
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.