Parameters | Pretreatment removal rate (%) | FV1 removal rate (%) | FV2 removal rate (%) | |||
FV1a | FV1b | FV1c | FV2a | FV2b | ||
EC (mS/cm) | −6.7 | 16.9 | 7.5 | 16.1 | 27.7 | 13.6 |
SS (mg/L) | 45.9 | 84.7 | 83.5 | 87.3 | 96.9 | 76.3 |
BOD5 (mg/L) | 24.4 | 78.2 | 77.1 | 83.6 | 99.5 | 97.7 |
COD (mg/L) | 14.2 | 77.5 | 74.7 | 82.3 | 91.2 | 64.6 |
N-TN (mg/L) | 26.5 | 50.6 | 47.2 | 47.2 | 72.1 | 49.4 |
(mg/L) | 23.8 | 58.0 | 57.1 | 57.4 | 95.2 | 91.7 |
(mg/L) | 37.2 | −692 | −588 | −690 | −1063.0 | −45.8 |
(mg/L) | 3.1 | 30.1 | 22.2 | 35.7 | 81.1 | 69.9 |