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Character of wellblue UF membrane:
1). Good hydrophilicity
Through a special hydrophilic treatment, our UF membrane has permanent hydrophilic properties. Even at a lower trans-membrane pressure, it also can get high water flux.With uniform pores, the hollow fiber UF membrane can remove the micro-organisms, colloids, algae and other turbidity substances. All the modules pass through air water inspection to ensure the fibers without broken or leaking.
2). Good mechanical strength
Through improving the formulation and process, our UF membrane products have good breaking strength and breaking elongation, to ensure no broken occurred in use.
3).Long service life
Using high quality improved PVC as raw materials, the hollow fiber UF membrane has good advantages of resistance to acid and alkali, organic solvent, grease and light aging. It also has good pollution resistance and strong endurance, it can be washed with various methods in order to remove contaminants and restore membrane flux.
4) Many field application
They are mainly used in water purifying, the treatment of pure water, filteration of RO system, recycling of municipal water and industrial waste water, separating of special solution and many other fields.
l Specification
Membrane Material | PVC | External Shape | Hollow fiber |
Inner and outer diameters of hollow-fiber | 0.9mm/1.6mm | Membrane fiber type | Inside-out hollow-fiber |
Dimensions of membrane module | 90 X 1190mm | Area of membrane module | 3.8M2 |
Pure water flux | 1000 L/H | Applicable temperature | 5 – 45 centidegree |
Molecular Weight Cut-off (MWCO) | 100.000 Daltons | ||
Characteristics of membrane structure | Hydrophilic double-compact layers | ||
Application Conditions
Pre - filtration | 50-150 um |
Max turbidity of inlet water | ≤ 15 NTU |
Running mode | Cross-flow filtration or dead end filtration |
Max inlet water pressure | 0.45 MPa |
Max pressure difference of transmembrane | 0.2 MPa |
Applicable PH range | 2- 12 |
Tolerable continuous residual chlorine | 100 PPm |
Tolerable interval residual chlorine | 200 PPm |
l Backwashing Design
Backwashing pressure | 0.25 MPa |
Backwashing frequency | Every 20 -60 minutes |
Backwashing time | 30-60 seconds every time |
Frequency of chemically enhanced ( CEB ) | Auto adding of additives in backwashing is recommended. |
Time of chemically enhanced backwashing ( CEB ) | 30- 60 seconds every time |
l Chemically washing design
Frequency of chemically washing | Every 1~4 months or when TMP is over 0.15 MPa |
Pressure of chemically washing | 0.15 MPa |
Time of chemically washing | 60 -minutes every time |
Acid washing chemical | Citric acid or oxalic acid ( mixed into solution with PH = 2 ) |
Alkali washing chemical | NaOH ( mixed into solution with PH=2) |
Index of output water
Turbidity of output water | < 0.1 NTU |
Index of silt density | < 1.5 |
Microorganism, pathogen | 99.9 % Removed |
Remarks: | 1. Pure water flux is measured with pure water at the pressure of 0.1MPa. 2. If water are from surface water ,river water or well water and so on ,pre-treatment shall be done. It is suggested that a 50-150 um precision filter shall be equipped to have inlet water with turbidity ≤15NTU. |
Backwashing Design UF membrane,ceramic ultrafiltration membrane