TABLE 1.
Steady-state values for standard measurements (days 120 to 220 of operation)
| Property or performance parameter | Steady-state value ± SDa
|
|
|---|---|---|
| Reactor 1 (10-min settle) | Reactor 2 (2-min settle) | |
| Sludge properties | ||
| MLSS (g liter−1) | 3.0 ± 0.2 | 8.8 ± 0.5 |
| VSS (g liter−1) | 2.7 ± 0.2 | 8.0 ± 0.5 |
| SVI (ml g−1) | 120 ± 12 | 50 ± 2 |
| ESS (mg liter−1) | 280 ± 90 | 170 ± 50 |
| Reactor performance | ||
| Endogenous SOURb | 12 ± 1 | 8 ± 2 |
| COD removal (%) | 96 ± 1 | 96 ± 1 |
a
Values are reported with 95% confidence (as determined by analysis of variance).
b
SOUR is reported as follows: mg of O2/(g of VSS h).