Table 3 Overall average (±SD) inlet and outlet concentrations (in mg l^− 1 except for temperature and pH) and average percentage removal (%R) of wastewater constituents. Minimum and maximum values are indicated in brackets

TKN

33.29 ± 3.13 (19–43)

19.77 ± 1.87 (11–25)

41

10.14 ± 3.99 (5.38–17.67)

69

NH₄⁺ − N

24 ± 1.63 (18–31)

18 ± 1.09 (14–23)

25

11.15 ± 0.69 (10.40–12.33)

54

NO₃⁻ - N

13 ± 3.12 (8.70–17)

9.64 ± 2.52 (6.70–13)

26

6.4 ± 1.91 (4.30–9)

51

PO₄³⁻ - P

14.86 ± 5 (8–23)

9.87 ± 2.57 (6.40–14)

34

6.26 ± 2.74 (3.44–10.80)

58

DO

0.83 ± 0.39 (0.3–1.4)

0.03 ± 0.05 (0–0.1)

–

0.02 ± 0.03 (0–0.07)

–

pH

6.4 ± 1.02 (4.8–7.8)

7.6 ± 0.64 (6.8–8.7)

–

8.1 ± 0.17 (8–8.3)

–

T(°C)

31.57 ± 4.72 (26–40)

20.29 ± 1.50 (18–22)

–

19.97 ± 0.86 (19.14–20.86)

–