Hollow Fiber Membrane Technical Information
Operational Instructions
| Filtrate flux range | 50 to 150 l/m h (30 to 90 gfd) |
| Maximum feed pressure | 5.0 bar (70 psi) |
| Trans-membrane pressure | 0.3 to 1.4 bar (5 to 20 psi) |
| pH range | 2 to 12 |
| Maximum instantaneous chlorine tolerance | 200 ppm |
| Maximum operating temperature | 45°C (113°F) |
| Maximum feed turbidity | 0.8 mm ID: 25 NTU1.2 mm ID: 50 NTU |
| Backwash flux range | 150 to 300 l/m h (90 to 180 gfd) |
| Backwash feed pressure | 0.7 to 2.1 bar (10 to 30 psi) |
| Backwash frequency & duration | Every 15 – 45 minutes for 30 – 60 seconds |
Chemically Enhanced Backwash
| Estimated frequency | Every 1 to 10 days of operation (depending upon feedwater conditions) |
| Duration | 10 to 20 minutes |
| CEB chemicals | NaOCl (100 – 200 ppm), NaOH (pH: 11-12), HCI (pH: 2-3), H2O2 , Citric acid |
Module Characteristics
| Membrane material | Hydrophilic PES |
| End cap material | GRP |
| Housing material | UPVC |
| Nozzles size | 2” Victaulic |