Table 1 General characteristics of UASB reactor effluent throughout each monitoring period

1 day HRT

31.2 ± 2.81

7.7 ± 0.24

217.1 ± 7.21

531 ± 47.81

94.8 ± 12.17

41.1 ± 8.46

31 ± 7.95

2 days HRT

29.8 ± 2.83

7.6 ± 0.17

167.5 ± 39.03

409.4 ± 54.61

70.3 ± 13.46

35.3 ± 7.94

21.2 ± 6.03

3 days HRT

28.2 ± 3.52

7.4 ± 0.15

128.6 ± 29.62

381.9 ± 53.05

51.1 ± 10.61

31.2 ± 6.56

19.4 ± 8.79

4 days HRT

28.6 ± 2.65

7.5 ± 0.26

95.1 ± 15.34

381.2 ± 33.59

44.9 ± 7.29

29.3 ± 6.48

16.9 ± 5.29

5 days HRT

26.1 ± 3.89

7.3 ± 0.25

86.2 ± 17.04

298.6 ± 38.55

34.1 ± 6.48

24.8 ± 5.11

16.4 ± 3.41

p-value

>0.05

>0.05

<0.05

<0.05

<0.05

<0.05

<0.05

Standard^a

40

6–9

<50

<250

<40

-

<5