Hydraulic load, observed inflow and outflow concentrations and outflow concentrations modelled using the Tanks-in-Series model (P = 3, Θ = 1.08 for temp adjustment of k20)
| Variable . | Time period . | Hydraulic load m/d . | Inflow conc. mg/l . | Load g/(m2*d) . | Remov. rate, k m/d . | C* mg/l . | Predicted outflow conc mg/l . | Observed outflow conc mg/l . |
|---|---|---|---|---|---|---|---|---|
| BOD5 | Sept-Dec-17 | 0.58 | 7.5 | 4.3 | 0.235a | 1a | 5.4 | 6.6 |
| Feb-Jul-18 | 0.47 | 11.4 | 5.3 | 0.235a | 1a | 7.5 | 6.4 | |
| TN | Sept-Dec-17 | 0.58 | 10.5 | 6.1 | 0.089b | 2 | 9.3 | 9.4 |
| Feb-Jul-18 | 0.47 | 10.4 | 4.9 | 0.089b | 2 | 9.0 | 8.5 | |
| NH4+-N | Sept-Dec-17 | 0.58 | 0.72 | 0.42 | 0.056b | 0 | 0.66 | 0.06 |
| Feb-Jul-18 | 0.47 | 0.40 | 0.18 | 0.056b | 0 | 0.35 | 0.03 |
| Variable . | Time period . | Hydraulic load m/d . | Inflow conc. mg/l . | Load g/(m2*d) . | Remov. rate, k m/d . | C* mg/l . | Predicted outflow conc mg/l . | Observed outflow conc mg/l . |
|---|---|---|---|---|---|---|---|---|
| BOD5 | Sept-Dec-17 | 0.58 | 7.5 | 4.3 | 0.235a | 1a | 5.4 | 6.6 |
| Feb-Jul-18 | 0.47 | 11.4 | 5.3 | 0.235a | 1a | 7.5 | 6.4 | |
| TN | Sept-Dec-17 | 0.58 | 10.5 | 6.1 | 0.089b | 2 | 9.3 | 9.4 |
| Feb-Jul-18 | 0.47 | 10.4 | 4.9 | 0.089b | 2 | 9.0 | 8.5 | |
| NH4+-N | Sept-Dec-17 | 0.58 | 0.72 | 0.42 | 0.056b | 0 | 0.66 | 0.06 |
| Feb-Jul-18 | 0.47 | 0.40 | 0.18 | 0.056b | 0 | 0.35 | 0.03 |
aFor inflow concentrations 3–30 mg/l, 50% percentile, no temp adjustment of k (Kadlec & Wallace 2009).
bAdjusted k-value for 25 °C.