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Average values of total suspended solids (TSS), volatile suspended solids (VSS), sludge retention time (SRT), and sludge volume index (SVI) in different operational phases of SBR1 and SBR2
| Operational phases | SBR1 | SBR2 | ||||||
|---|---|---|---|---|---|---|---|---|
| I | II | III | IV | V | I | III | V | |
| TSSreactor (g/L) | 2.9 | 2.5 | 2.3 | 1.9 | 1.8 | 2.6 | 1.8 | 1.6 |
| VSSreactor (g/L) | 2.4 | 2.0 | 1.8 | 1.1 | 1.1 | 2.1 | 1.0 | 0.7 |
| SRT | 85 | 68 | 55 | 36 | 34 | 85 | 28 | 27 |
| SVI (mL/g) | 110 | 91 | 80 | 70 | 70 | 110 | 68 | 60 |
