BW-4040 Brackish Water Reverse Osmosis (RO) Membranes

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Product Line Description

BW-4040 membrane elements are spiral wound, composite polyamide membrane elements for Brackish Water treatment. These membranes are characterized by a high operating feed pressure, normally is 225 psi (1.55 MPa) and result in higher salt rejection rate (especially good for removing TOC, SiO2, etc.), above 99.5%. These membranes are designed for industrial water treatment applications (NaCl ≤10,000 ppm, Salt content ≤6000 µs/cm), such as the treatment of brackish and high salinity waters for Electronic factories, Electric Power plants, Petrochemical industry, Coal chemical industry.

Brands HUAMO
Active Membrane Area 78 ft²
7.2 m²
Average Permeate 2500 gal/d
9.5 m³/d
Stable Rejection 99.5 %
Minimum Rejection 99.3 %
Spacer Net Thickness 29 mil
0.73 mm
Testing Conditions
Testing Pressure 225 psi
1.55 MPa
Temperature of Testing Solution 25 ºC
Concentration of Testing Solution (Sodium Chloride (NaCl)) 2,000 ppm
Potential of Hydrogen (pH) Value of Testing Solution 7.5 pH
Recovery Rate of Single Element 15 %
Operation Limits and Conditions
Maximum Feed Water Flow 16 gpm
3.6 m³/h
Maximum Working Pressure 600 psi
4.14 MPa
Maximum Feed Water Temperature 45 ºC
Maximum Feed Water (SDI15) < 5
Potential of Hydrogen (pH) Range of Feed Water During Continuous Operation 2 to 11 pH
Potential of Hydrogen (pH) Range of Feed Water During Chemical Cleaning 1 to 13 pH
Residual Chlorine Concentration of Feed Water < 0.1 ppm
Maximum Pressure Drop of Single Element 10 psi
0.07 MPa
Maximum Turbidity 1.0 NTU