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Hollow-fiber Ultrafiltration Membrane Module SRUF-250
The characteristics of Ultrafiltration technology:
-UF tech. is an efficient and environmentally,energy-saving separation process
-Using lower pressure as a driving force
-UF separation process is on under room temperature,low energy consumption
-The scale and handle ability range of UF process is large
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1.PERFORMANCE PARAMETERS
| Membrane material | Polyvinyl Chloride(PVC) | Molecular Weight Cut-off(MWCO) | 80.000-10.000 Dalton |
| Inner and outer diameters of hollow-fiber | 0.9mm/1.6mm | Membrane fiber type | Inside-out hollow-fiber |
| Charateristics of membrane structure | Hydrophilic double-compact layers | ||
2.APPLICATION CONDITIONS
| Pre-filtration | 50-150um | Max. turbidity of inlet water | <=15NTU | Rate flux | 60-160L/M/H |
| Running mode | Cross-flow filtration or dead end filtration | Max.inlet water pressure | 0.45MPa | Pressure difference of transmembrane at 20°c(TMP) | 28-150KPa |
| Max.Pressure difference of transmembrane | 0.2MPa | Applicable PH range | 2-12 | Applicable temperature | 5°c |
| Tolerable continuous residual chlorine | 100PPm | Tolerable interval residual chlorine | 200PPm |
3.BACKWASHING DESIGN
| Backwashing pressure | 0.25MPa | Backwashing flow | 220-300L/M/H | Backwashing frequency | Every20-60 minutes |
| Backwashing time | 30-60 seconds every time | Frequency of chemically enhanced backwashing(CEB) | Auto adding of additives in backwashing is recommended | Time of chemically enhanced backwashing(CEB) | 30-60seconds every time |
4.CHEMICALLY WASHING DESIGN
| Frequency of chemically washing | every1-4months or when TMP is over0.15MPa | Pressure of chemically washing | 0.15Mpa | Flow of chemically washing | 200-250L/M/H |
| Time of chemically washing | 60-90 minutees 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) |
5.INDEX OF OUTPUT WATER
| Turbidity of output water | <0.1NTU | Index of silt density | <1.5 |
| Remarks: | 1.Pure water flux is measured with pure water at25°c with inlet water pressure of 0.1MPa. 2.If water sources are from surface water,river water or well water and so on,pre-treatment shall be done. It is suggested that a 50-150um precision filter shall be equipped to have inlet water with turbidity<=15NTU. | Microorganism,pathogen | 99.9%Removed |