Table 6
Performance of the constructed wetland (CW) in the removal of the environmental pollutants
| Measured parameter | In | Out | Expected design efficiency (%) | Actual CW efficiency (%) |
|---|---|---|---|---|
| BOD5 (mg/L) | 155 ± 23 | 25 ± 3 | 85.2 | 83.9 |
| COD (mg/L) | 624 ± 81 | 68 ± 9 | 75.9 | 78.2 |
| TSS (mg/L) | 1,040 ± 154 | 40 ± 6 | 97.2 | 96.2 |
 (mg/L) | 285 ± 6 | 5 ± 1 | 99.1 | 98.2 |
| Fecal coliforms (CFU/100 mL) | 10,324 ± 273 | 330 ± 15 | 97.2 | 96.8 |
 (mg/L) | 34.6 ± 6.8 | 7.4 ± 2.1 | 80.3 | 78.6 |
| NH3 (mg/L) | 105.5 ± 12.8 | 5.0 ± 1 | 97.6 | 95.3 |
| Turbidity (NTU) | 1,934 ± 96 | 12.5 ± 1.2 | 99.1 | 99.4 |
| Measured parameter | In | Out | Expected design efficiency (%) | Actual CW efficiency (%) |
|---|---|---|---|---|
| BOD5 (mg/L) | 155 ± 23 | 25 ± 3 | 85.2 | 83.9 |
| COD (mg/L) | 624 ± 81 | 68 ± 9 | 75.9 | 78.2 |
| TSS (mg/L) | 1,040 ± 154 | 40 ± 6 | 97.2 | 96.2 |
| (mg/L) | 285 ± 6 | 5 ± 1 | 99.1 | 98.2 |
| Fecal coliforms (CFU/100 mL) | 10,324 ± 273 | 330 ± 15 | 97.2 | 96.8 |
| (mg/L) | 34.6 ± 6.8 | 7.4 ± 2.1 | 80.3 | 78.6 |
| NH3 (mg/L) | 105.5 ± 12.8 | 5.0 ± 1 | 97.6 | 95.3 |
| Turbidity (NTU) | 1,934 ± 96 | 12.5 ± 1.2 | 99.1 | 99.4 |