BW-440HR Membrane
Product Introduction
The brackish water series membrane elements are suitable for desalination of surface water and groundwater sources with salt concentrations below 10,000 mg/L. They are also applicable for desalination and decolorization of water bodies with higher organic or microbial content. Compared with conventional brackish water membranes, the anti-fouling brackish water membrane elements have a wider flow channel and higher fouling resistance.
Product Specifications and Performance Parameters
|
Model |
Stable Salt Rejection Rate |
Minimum Salt Rejection Rate |
Permeate Flow |
Effective Area |
Feed Spacer |
Test Solution Concentration |
Test Pressure |
|||
|
% |
% |
GPD |
m³/d |
ft2 |
m2 |
mil |
mg/L |
psi |
MPa |
|
|
BW-440HR |
99.7 |
99.6 |
12650 |
47.9 |
440 |
40.9 |
28 |
2000 |
225 |
1.55 |
Test Conditions ：NaCl aqueous solution, temperature 25 ℃, pH value 7.5–8.0, recovery rate 15%; permeate flow variation range ±15%.
Operating Conditions
|
Maximum Operating Pressure |
600 psi (4.14 MPa) |
|
Maximum Feed Water Temperature |
45 ℃ |
|
Maximum Feed Flow Rate |
17.0 m3/h (8040)、3.6 m3/h (4040) |
|
Maximum Feed Water SDI15 |
5.0 |
|
Free Chlorine Tolerance |
0.1 mg/L |
|
Operating pH Range (Continuous Operation) |
2-11 |
|
Cleaning pH Range (30 minutes max) |
1-13 |
|
Maximum Allowable Pressure Drop per Element |
15 psi (0.10 MPa) |
2.Under certain conditions, the presence of free chlorine or other oxidizing agents may lead to premature membrane failure. It is recommended that such substances be removed during pretreatment before coming into contact with the membrane.
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