Ultrafiltration Membranes (UF)
If you are looking for a genuine ultrafiltration membrane manufacturer, then Shanghai CM will be your first choice.CM has been an expert water treatment equipment and part supplier in China since 2009. We can provide ultrafiltration membranes made of PVDF, PES and PAN. We can also provide alternative products for most brands currently on the market. We can solve your ultrafiltration membrane selection, use and installation problems in one stop
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Ultrafiltration Membrane (UF)
Ultrafiltration (UF) is a separation principle for screening, with pressure as the driving force to realize mechanical separation membrane separation process. Under certain pressure, when the mixed solution of large molecules or small molecule solute passes through the membrane surface, solvent and small molecule solutes pass through the membrane, while the solute molecules are intercepted by mechanical filtration membrane as concentrate.
Hollow Fiber Ultrafiltration Membrane
Hollow fiber ultrafiltration membrane is an important form of separation membrane. The membrane pores are capillary, and the micropores are located on the wall of the tube. The solution is purified, separated and concentrated based on whether its components can pass through these micropores.
Key Advantages
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Largest effective area per unit volume among membrane components
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High filtration and separation efficiency
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Easy cleaning and simple structure
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Easy operation and cost-effective
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No secondary pollution in production process
Operating Parameters
Comprehensive technical specifications and operating conditions for different ultrafiltration membrane materials
| Parameter | PES | PVDF | PAN |
|---|---|---|---|
| Material | PES | PVDF | PAN |
| Module | (Inside-out) | (Inside-out) | (Outside-in) |
| Membrane diameter ID/OD(mm) | 1.0/1.6 | 0.7/1.3 | 0.7/1.3 |
| Maximum Feed turbidity | <50NTU | <100NTU | <80NTU |
| Maximum chlorine resistance | continuously 50ppm Instantaneously 500ppm |
continuously 200ppm Instantaneously 2000ppm |
continuously 5ppm Instantaneously 100ppm |
| Temperature range | 2-10 | 2-12 | 2-10 |
| PH range | 5-45 ℃ | ||
| Operation module | Cross flow or dead-end | ||
| Maximum permeate Flux | 120L/m²·h | 150L/m²·h | 150L/m²·h |
| Maximum Feed pressure | 0.5 MPa | ||
| Maximum trans membrane pressure | 0.2 MPa | ||
| Maximum Back wash pressure | 0.25 MPa | ||
| Back wash frequency | 15-60 min | ||
| Back wash duration | 30-60 sec | ||
| Back wash flux | 100-360 L/m²·h | ||
| Chemical enhanced backwash (CEB) frequency | 1-15 day | ||
| Chemical enhanced backwash (CEB) duration | 1-10 min | ||
| Chemical cleaning frequency | 30-180 day | ||
| Chemical cleaning duration | 90-480 min | ||
| Chemical cleaning chemicals | NaClO Or H2O2 (500ppm), NaOH（pH≤12）, HCl（pH≥2) |
NaClO Or H2O2 (2000ppm), NaOH（pH≤10）, HCl（pH≥2） |
NaClO Or H2O2 (100ppm), NaOH（pH≤10）, HCl（pH≥2） |
PES Material
Polyethersulfone membrane with excellent chemical resistance and moderate chlorine tolerance
PVDF Material
Polyvinylidene fluoride with superior chlorine resistance and high flux performance
PAN Material
Polyacrylonitrile membrane with outside-in configuration for specific applications
External Pressure VS Internal Pressure
Understanding the two fundamental operating modes of hollow fiber ultrafiltration membranes and their distinct filtration mechanisms.
External Pressure (Outside-In)
The original liquid is driven by the pressure difference, penetrates radially from the outside to the inside, through the hollow fiber to become the osmotic fluid, and the trapped concentrated material is collected in the outside of the hollow fiber.
Internal Pressure (In-Outside)
The original solution enters the hollow fiber membrane, driven by the pressure difference, radial from inside to outside through the hollow fiber into osmotic fluid, concentrated liquid is left in the hollow fiber, from the other end out.
Key Differences Comparison
| Aspect | External Pressure | Internal Pressure |
|---|---|---|
| Flow Direction | Outside to Inside | Inside to Outside |
| Concentrate Location | Outside of hollow fiber | Inside hollow fiber |
| Filtrate Collection | Through fiber wall | Outside fiber surface |
| Pressure Application | External shell side | Internal lumen side |
Workshop Production
Customization is accepted and alternatives to other brands of products can be provided. Our state-of-the-art manufacturing facilities ensure the highest quality ultrafiltration membrane production with precision engineering and quality control.
Advanced Manufacturing
Our workshop utilizes cutting-edge technology and automated production lines to ensure consistent quality and efficiency in ultrafiltration membrane manufacturing.
Quality Assurance
Every membrane undergoes rigorous testing and quality control processes to meet international standards and customer specifications.
Precision Testing
Advanced testing equipment ensures each membrane meets performance specifications.
Assembly Line
Streamlined production processes for efficient and scalable manufacturing.
Quality Control
Comprehensive quality control laboratory for thorough product validation.
Custom Solutions Available
We offer customized ultrafiltration membrane solutions tailored to your specific requirements. Our experienced team can provide alternatives to other brand products with superior performance and competitive pricing.