● Purification of surface water.
● Reuse of heavy metal waste water.
● Pretreatment of RO.
Below filtration effects are proved according to the use of modified PVDF hollow fiber ultrafiltration membrane in different types of water:
| No. | Item | Water?Output?Index | 
| 1 | TSS | ≤1mg/L | 
| 2 | Turbidity | ≤ 1 | 
Size

Chart 1 MBR Size
| Filtering?Direction | Outside-in | 
| Membrane?Material | Reinforced?Modified?PVDF | 
| Precision | 0.03 ?micron | 
| Membrane?Area | 30m2 | 
| Membrane?ID/OD | 1.0mm/ 2.2mm | 
| Size | 1250mm×2000mm×30mm | 
| Joint?Size | Φ24.5mm | 
| Component | Material | 
| Hollow?Fiber?Membrane | Reinforced?Modified?PVDF | 
| Sealing Compound | Epoxy?Resins?+?Polyurethane (PU) | 
| Housing | ABS | 
Proper pretreatments must be set when raw water contains a lot of impurities/coarse particles or large proportion of grease. Defoamer must be used to remove foams in membrane tank when necessary, please use alcoholic defoamer which is not easy to scale.
| Item | Limit | Remark | 
| PH?Range | 5-9 (2- 12 when?washing) | Neutral?PH?is?better?for?bacterial?culture | 
| Particle?Diameter | <2mm | Prevent?sharp?particles?to?scratch?membrane | 
| Oil?&?Grease | ≤2mg/L | Prevent?membrane?fouling/sharp?flux?decrease | 
| Hardness | ≤150mg/L | Prevent?membrane?scaling | 
| Designed?Flux | 15~40L/m2.h | 
| Backwashing?Flux | Twice?the?designed?flux | 
| Operating?Temperature | 5~45°C | 
| Maximum?Operating?Pressure | -50KPa | 
| Suggested?Operating?Pressure | ≤-35KPa | 
| Maximum?backwashing?Pressure | 100KPa | 
| Operating?Mode | Continuous?opeartion, intermittent?backwashing?air?flushing | 
| Blowing?Mode | Continuous?Aeration | 
| Aeration?Rate | 4m3/h.piece | 
| Washing?Period | Clean?water?backwashing?every?1~2h; CEB?every?1~2 days;Offline?washing?every?6~12 months
 (Above?information?is?for?reference?only, please?adjust according?to?actual?differential?pressure?change?rule)  | 
              
 By Dominic from Slovakia - 2017.08.21 14:13
              
 By Daphne from Guatemala - 2017.05.02 11:33