Physicochemical parameters | Sampling sites | ||
Downstream sites | Upstream site | ||
W1 | W2 | Wup (control) | |
Temperature (˚C) | 21.70 ± 0.06 | 21.20 ± 0.01 | 20.47 ± 0.06 |
pH | 8.15 ± 0.01 | 7.69 ± 0.03 | 7.94 ± 0.04 |
EC (µScm−1) | 5570.00 ± 10 | 4753.33 ± 5.77 | 340.33 ± 0.58 |
TDS (mg∙L−1) | 3338.33 ± 2.89 | 2861.67 ± 2.89 | 204.67 ± 0.58 |
TSS (mg∙L−1) | 1397.00 ± 5.58 | 818.67 ± 4.51 | 380.67 ± 3.03 |
Chloride (mg∙L−1) | 1766.91 ± 48.19 | 1239.40 ± 29.43 | 171.50 ± 17.62 |
BOD5 (mg∙L−1) | 73.40 ± 6.46 | 55.00 ± 4.44 | 11.40 ± 1.23 |
COD mg∙L−1 | 206.00 ± 33.4 | 164.00 ± 25.4 | 27.40 ± 10.3 |
Total ammonia (as N) (mg∙L−1) | 99.34 ± 12.11 | 55.54 ± 7.56 | 4.50 ± 1.01 |
Total nitrogen (as N) (mg∙L−1) | 143.50 ± 17.5 | 78.13 ± 8.5 | 9.34 ± 2.11 |
Total phosphorus (as P) (mg∙L−1) | 10.34 ± 1.55 | 5.30 ± 0.76 | 2.10 ± 0.45 |
Sulphide (as S) (mg∙L−1) | 14.55 ± 1.23 | 5.00 ± 0.55 | 0.11 ± 0.05 |