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- ■ Follow fibers in 3D network structure thanks to our unique membrane production technology
- ■ Enhanced effects of backwash thanks to its asymmetric structure
- ■ High membrane flux and extended service life
- Basic Information
- Documents and Catalogs
Basic specifications
| Membrane material | PSU |
|---|---|
| Cutoff molecular weight | 150,000 Da |
| Nominal membrane area | 45 ㎡ |
| Pure water flux | 260 L/㎡/H @ TMP 100kPa |
| Module flow rate; Recommended design value | 2.7 ～ 8.1 ㎥/H @ TMP 100kPa |
| Maximum pressure of feed water side | 400 kPa |
| Regular pressure of feed water | 100～200 kPa |
Dimensions
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Total length (L) 1,655 mm Port-to-port distance (L1) 1,577 mm Port-to-port distance (L2) 1,212 mm Outer diameter of straight piping section (D) 250 mm
Basic performance of NOK’s hollow fiber membranes
| Specifications of hollow fiber membranes | ||||
|---|---|---|---|---|
| Inner diameter | Outer diameter | Pore diameter | Separation layer | |
| Cutoff molecular weight | Reduced pore diameter | |||
| 0.8 mm | 1.4 mm | 150,000 Da | 0.01 μm | Inner skin structure |
| Performance of hollow fiber membranes | ||||
| Permeation flow rate | Breaking stress | Elongation at break | ||
| 400 L/(m2/hour) @100 kPa (pure water) | 5.2 MPa | 58 % | ||
SEM image of the hollow fiber membrane
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Membrane cross section -
Outer surface of hollow fiber -
Outer surface of hollow fiber
Introduction example
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NU-4500:
Year of construction: 2016
Installation site: Chemical plant
Location: Wuxi, China
Application: Recycling of waste water
Quantity: 9
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