Table 1 Average organic loading rates (OLR) and SRTs at different periods and the corresponding biodegradability for both mesophilic and thermophilic conditions
Conditions and operational days | OLR, kg COD/(m3∙day) | Applied SRT (day) | Required SRT (day) | AnBD (%) |
|---|---|---|---|---|
Mesophilic | ||||
 333–393 | 5.5 | 60 | 64 | ND |
 393–550 | 2.5 | 157 | 128 | 53 |
 550–608 | 3.4 | 58 | 107 | 54 |
 608–624 | 6.7 | 16 | 53 | 45 |
 624–644 | 10.0 | 20 | 36 | 45 |
 644–650 | 13.5 | 6 | 27 | 44 |
 650–656 | 22.0 | 6 | 16 | 14 |
Thermophilic | ||||
 333–550 | 5.5 | 217 | 64 | 60 |
 550–608 | 6.7 | 58 | 53 | 57 |
 608–624 | 10.0 | 16 | 36 | 58 |
 624–644 | 13.5 | 20 | 27 | 47 |
 644–656 | 22.0 | 12 | 16 | 34 |