ULP-400 Membrane
Product Introduction
The ultra-low pressure membrane elements are made by winding specially developed ultra-low pressure polyamide composite membranes. This series is suitable for desalination of feed water with a salt concentration below 3,000 mg/L. These products feature high salt rejection, low operating pressure, and high water flux. They are widely applicable in desalination projects using municipal tap water, groundwater, and other low-salinity sources, such as point-of-use drinking water in residential communities and process water in the food and beverage industry.
Product Specifications and Performance Parameters
|
Model |
Stable Salt Rejection Rate |
Minimum Salt Rejection Rate |
Permeate Flow |
Effective Membrane Area |
Feed Spacer |
Test Solution Concentration |
Test Pressure |
|||
|
% |
% |
GPD |
m³/d |
ft2 |
m2 |
mil |
mg/L |
psi |
MPa |
|
|
ULP-400 |
99.2 |
99 |
12700 |
48.1 |
400 |
37.2 |
32 |
1500 |
150 |
1.03 |
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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