Table 4 Life cycle inventory of Combination IV for integrated membrane-filtration system
| Unit operation/component | Unit | Amount |
|---|---|---|
| (I) UF membrane | ||
| Back wash pump | kWh | 0.21 |
| Process water | L | 168.8 |
| NaOH | kg | 0.08 |
| (II) RO membrane | ||
| Intermediate transfer pump | kWh | 1.12 |
| High pressure pump | kWh | 6.6 |
| Intermediate transfer pump - Chemical cleaning | kWh | 0.75 |
| High pressure pump - Chemical cleaning | kWh | 4.42 |
| Process water | L | 168.8 |
| NaOH | kg | 0.16 |