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