Table 1.
List of all investigated wastewater treatment plants with their respective specifications (unk.: unknown).
| Capacity [p.e.] | Quantity [m3/d] | Temp [°C] | pH | Conductivity [μs/cm] | COD [mg/L] | NH4-N [mg/L] | NO3-N [mg/L] | NO2-N [mg/L] | TNb [mg/L] | TotalP [mg/L] | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WWTP1 | Influent | 440,000 | 112,501 | 15.5 | 7.9 | 1,241 | 441 | 35.5 | unk. | unk. | 36.5 | 6.04 |
| Effluent | unk. | 15.6 | 7.7 | 833 | 12.0 | 0.1 | unk. | unk. | 4.0 | 0.13 | ||
| WWTP2 | Influent | 23,500 | 699 | 6.5 | 7.33 | 1,413 | 1,033 | 64.6 | 0.61 | 0.112 | 99.0 | 14.2 |
| Effluent | unk. | 6.5 | 6.7 | 1,044 | 44.0 | 1.5 | 2.18 | 0.064 | unk. | 0.55 | ||
| WWTP3 | Influent | 46,000 | 3,496 | 10.0 | 8.0 | 2,480 | 987 | 75.6 | 1.15 | 1.16 | 110.0 | 5.69 |
| Effluent | 3,207 | 7.0 | 7.9 | 2,250 | 41.6 | 0.4 | 1.48 | 0.028 | 4.2 | 0.62 | ||
| WWTP4 | Influent | 26,000 | 1,341 | 6.1 | 8.4 | 1,425 | 1,561 | 20 | 16.3 | 9.4 | 84.0 | 14.1 |
| Effluent | 1,341 | 5.8 | 7.2 | 1,221 | 48.6 | 0.05 | 0.18 | 0.03 | 2.4 | 0.41 | ||
| WWTP5 | Influent | 45,000 | 1,430 | 19.5 | 7.6 | 1,718 | 1,584 | 52.6 | 0.7 | 0.580 | 110.0 | 12.4 |
| Effluent | 1,683 | 17.3 | 7.6 | 1,355 | 22.0 | 0.02 | 6.48 | 0.030 | 7.9 | 0.08 | ||
| WWTP6 | Influent | 210,000 | 30,527 | 8.0 | 7.83 | 1,451 | 1,258 | 55.6 | 0.894 | 0.083 | 96.9 | 14.3 |
| Effluent | 30,527 | 8.6 | 7.32 | 956 | 31.8 | 1.1 | 6.89 | 0.153 | 10.2 | 0.32 | ||
| WWTP7 | Influent | 8,000 | 480 | 11.0 | 8.44 | unk. | 720.0 | 68.6 | 1.35 | 0.356 | 88.2 | 11.4 |
| Effluent | 480 | 10.6 | 7.78 | 1,808 | 26.7 | 1.9 | 1.25 | 0.257 | 6.0 | 0.98 |