Hongtek UFM160 Series 6" PVDF Hollow Fiber Ultrafiltration Membrane Module are made of high quality modified PVDF hollow fiber ultrafiltration membrane, which has higher chemical stability, oxidation resistance, acid and alkali resistance, and long service life. After special hydrophilic treatment, the PVDF ultrafiltration membrane has permanent hydrophilic properties, which can ensure a high water production flux even at a lower transmembrane pressure. PVDF hollow fiber ultrafiltration membrane uniform void distribution can well overcome the blockage of particles and ensure the stability good quality of produced water. PVDF UF membrane has a high breaking strength and elongation ability, which can effectively reduce the probability of breaking film filaments.
| Module | UFM160 |
| Element size | Ø160×1810mm |
| Membrane material | PVDF |
| Active membrane area | 40m² |
| ID/OD of hollow fiber | 0.8mm/1.3mm |
| MWCO | 200000 Dalton |
| Filtration rating | 0.1 micron |
| Material of end seal | Epoxy resins |
| Material of housing | UPVC |
| Inlet pipe | DN40 OD 40mm PVC pipe |
| Produced water outlet pipe | DN40 OD 40mm PVC pipe |
| Concentrated water outlet pipe | DN40 OD 40mm PVC pipe |
● PVDF hollow fiber UF is antioxidant, stain resistant, easy to clean
● PVDF hollow fiber UF has large membrane flux, stable water output and long service life
● PVDF UF membrane can be cleaned by air and water, high membrane flux recovery rate
● Small footprint, easy replacement, low voltage operation, saving electricity and labor costs
● The quality of the produced water is good, the water recovery rate is high, which effectively saves water resources
● Surface water treatment
● RO system pretreatment
● Mineral water production line
● Drinking water treatment of tap water
● Industrial wastewater deep treatment reuse
● Residential and commercial water treatment
● Municipal sewage advanced treatment and recycling
| Membrane water flow mode | Outside to inside |
| Operation mode | Cross-flow filtration or dead end filtration |
| Pure water flow | 8,000L/H (0.15MPa, 25℃) |
| Designed water flow | 40-120L/m².hr (0.15MPa, 25℃) |
| Maximum operating pressure | 0.2Mpa |
| Maximum transmembrane pressure | 0.15MPa |
| Operating temperature range | 5-45℃ |
| Influent water turbidity | <25NTU |
| Produced water turbidity | <1NTU |
| Produced water SS | ≤1mg/L |
| Produced water SDI | ≤3 |
| Operation PH Range | Working: 4-10; Washing: 2-12 |
| Bacterial virus removal rate | >4log |
| Air Washing Volume | 0.1-0.15N m3/m².hr |
| Air Washing Pressure | ≤0.1MPa |
Work principle of PVDF ultrafiltration membrane
● PVDF UF membrane water flow mode is from outside to inside
● PVDF ultrafiltration membrane fiber pore size distribution is uniform and larger filtration area
● PVDF ultrafiltration has strong anti-staining ability, resistant to acid and alkali & long working life
● The filtration rarting of PVDF UF membrane is 0.1 micron, particles are trapped by the membrane wall
● Water, small molecules and ions pass through the membrane walls under pressure to form ultrafiltrate
● Outside to inside flow mode of PVDF hollow fiber UF ensure the stability good quality of produced water
Project Case of 6" PVDF Ultrafiltration Membrane Module
PVDF Ultrafiltration equipment in power plants 18000m³/d
Process: Surface water - Integrated water purifier - Automatic cleaning filter - PVDF UF membrane - RO membrane - Water supply
Equipment parameters: UFM160 Series 6" PVDF UF membrane module, 40pcs/group, 4 groups, 160pcs in total, design operating flux 65L/m².h
Feeding Water Requirements
*Before feeding water, It is recommended that the particles of raw water should be less than 50 microns after the security filter.
| Turbidity | ≤25NTU |
| Oil & Grease | ≤2mg/L |
| Suspended Solid (SS) | ≤20mg/L |
| Total Iron | ≤1mg/L |
| Continuous Residual Chlorine | ≤5ppm |
| Chemical Oxygen Demand (COD) | Suggested ≤500mg/L |
*Material of UF membrane is polymer organic plastic, there must not be any organic solvents in raw water.
Backwashing Parameters
| Maximum Backwashing Pressure | 0.2MPa |
| Backwashing Flow Rate | 100-150L/m².h |
| Backwashing Frequency | Every 30-60min |
| Backwashing Duration | 30-60s |
| CEB Frequency | 0-4 times per day |
| CEB Duration | 5-10min |
| CIP Frequency | Every 1-3 months |
| Sterilization | 15ppm Sodium Hypochlorite |
| Organic Pollution Washing | 0.2% Sodium Hypochlorite + 0.1% Sodium Hydroxide |
| Inorganic Pollution Washing | 1-2% Citric Acid/0.2% Hydrochloric Acid |
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