Table 1 Life cycle inventory of Combination I for integrated membrane-filtration system
Unit operation/component | Unit | Amount |
|---|---|---|
(I) MBBR | ||
 Clarify water pump (P6102) | kWh | 2.24 |
 Air compressor (IA6101) | kWh | 0.66 |
 Air | m3 | 8.01 |
(II) Pre-treatment through sand filters and activated carbon filters | ||
 Biofilm transfer pump (P6103) | kWh | 1.12 |
 Back wash pump (P6301) | kWh | 0.42 |
 Process water | m3 | 337.5 |
(III) UF membrane | ||
 Back wash pump (P6301) | kWh | 0.21 |
 Process water | L | 168.75 |
 NaOH | kg | 0.08 |
(IV) RO membrane | ||
 Intermediate transfer pump (P6303) | kWh | 1.12 |
 High pressure pump (P6304) | kWh | 6.6 |
 Intermediate transfer pump (P6303) -Chemical cleaning | kWh | 0.37 |
 High pressure pump (P6304) - Chemical cleaning | kWh | 2.24 |
 Process water | L | 168.8 |
 NaOH | kg | 0.08 |