Description
TM720D-370 is a high-desalination, high-water-production, chemical-cleaning-resistant membrane element manufactured using the latest materials and production technology. It features an effective membrane area of 370 square feet and a feedwater spacer thickness of 34 mil. It is suitable for brackish water desalination with salinity below 10,000 ppm, as well as various applications such as desalination of mildly polluted surface water and reuse of cooling tower blowdown.
TM720D-370 has the widest cleaning pH range (pH 1–13), enabling fast and effective resolution of membrane fouling issues. The reverse osmosis membrane sheet can withstand minor chlorine residual leakage incidents within a certain range caused by operational errors, thereby enhancing system safety.
TM720D-370 8-Inch Low-Pressure Chemical-Resistant Reverse Osmosis Membrane Element
TM720D-370 is a high-desalination, high-water-production, chemical-cleaning-resistant membrane element manufactured using the latest materials and production technology. It features an effective membrane area of 370 square feet and a feedwater spacer thickness of 34 mil. It is suitable for brackish water desalination with salinity below 10,000 ppm, as well as various applications such as desalination of mildly polluted surface water and reuse of cooling tower blowdown. TM720D-370 has the widest cleaning pH range (pH 1–13), enabling fast and effective resolution of membrane fouling issues. The reverse osmosis membrane sheet can withstand minor chlorine residual leakage incidents within a certain range caused by operational errors, thereby enhancing system safety.
8.1 Membrane Element Performance Specifications
|
Membrane Element Model
|
Standard Desalination Rate (%)
|
Permeate Flow gpd (m³/d)
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Effective Membrane Area ft² (m²)
|
Feed Spacer Thickness (mil)
|
|---|---|---|---|---|
|
TM720D-370
|
99.8
|
10,200 (39)
|
370 (34)
|
34
|
Test Conditions: Operating Pressure 225 psi (1.55 MPa) | Test Water Temperature 77°F (25°C) | Test Water Concentration 2000 mg/L (as NaCl) | Single Element Water Recovery 15% | Test Water pH 7 | Minimum Single Element Desalination Rate 99.65% | Minimum Permeate Flow 8,200 gpd (31 m³/d)
8.2 Operating Limits
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Parameter
|
Value
|
|---|---|
|
Maximum Operating Pressure
|
600 psi (4.1 MPa)
|
|
Maximum Feed Flow
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70 gpm (382 m³/d)
|
|
Maximum Feed Temperature
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113°F (45°C)
|
|
Maximum Feed SDI
|
5
|
|
Feed Free Chlorine Concentration
|
<0.1 mg/L
|
|
Continuous Operating Feed pH Range
|
2–11
|
|
Chemical Cleaning Feed pH Range
|
1–13
|
|
Maximum Pressure Drop per Element
|
15 psi (0.1 MPa)
|
|
Maximum Pressure Drop per Vessel
|
50 psi (0.34 MPa)
|
8.3 Membrane Element Dimensions (Unit: inches (mm))
(Illustration of membrane element flow direction and dimensions included as per diagram.)
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