Table 3 Effects of changes in temperature and retention time on the COD and BOD removal efficiency (%) in WAO and WAO/GAC methods
From: The study of leachate treatment by using three advanced oxidation process based wet air oxidation
Parameter | Methods | WAO | WAO/GAC | ||||
|---|---|---|---|---|---|---|---|
Temperature time | 100°C | 200°C | 300°C | 100°C | 200°C | 300°C | |
COD | 30 min | 7.8 | 12.6 | 19 | 35 | 41 | 43.5 |
60 min | 15.2 | 16.2 | 24.6 | 33 | 41.7 | 46 | |
90 min | 24 | 28 | 33 | 41.5 | 48 | 56 | |
BOD | 30 min | 44.5 | 47 | 50.6 | 38 | 35.5 | 43.5 |
60 min | 31 | 41.3 | 46 | 35 | 35 | 41.5 | |
90 min | 15 | 25.5 | 38.5 | 31 | 33 | 35 | |
NH3 | 30 min | 6 | 29.4 | 31.5 | 37 | 58.4 | 63 |
60 min | 9.6 | 42.43 | 50.9 | 42.5 | 52 | 58 | |
90 min | 15.4 | 47.61 | 54.6 | 53 | 64.6 | 68 | |