| 水质指标 | 某污水处理厂(厂1) | 某污水处理厂(厂2) | 
| TN | 43.51 ± 4.82 | 17.10 ± 1.12 | 
| -N | 42.39 ± 2.19 | 16.58 ± 1.13 | 
| -P | 0.40 ± 0.06 | 0.53 ± 0.16 | 
| pH | 6.77 ± 0.19 | 7.57 ± 0.10 | 
| COD | 26.09 ± 8.99 | 22.95 ± 8.64 |