Parameters

Unit

Raw sewage

Anaerobic pond Effluent

Removal rate %

Temperature

˚C

26.8 ± 0.1

28.3 ± 0.1

pH

6.47 ± 0.01

6.773 ± 0.001

e_H

24.1 ± 0.8

6.5 ± 0.1

r_H

13.75 ± 0.05

13.16 ± 0.03

χ

µS/cm

745 ± 5

108 ± 2

Turbidity

NTU

150.7 ± 1.5

72.5 ± 1.3

52%

COD

mg/l

516.9 ± 25

175.4 ± 7.0

66%

BOD₅

mg/l

218 ± 35

101 ± 2

54%

MES

mg/l

160 ± 2

75 ± 0.5

53%

NTK

mg/l

20.86 ± 0.50

15.7 ± 0.3

25%

${\text{N-NO}}_{\text{3}}^{-}$

mg/l

1.56 ± 0.01

1.1 ± 0.0

29%

${\text{N-NO}}_{\text{2}}^{-}$

mg/l

0.00 ± 0.00

0.22 ± 0.00

${\text{P-PO}}_{\text{4}}^{3-}$

mg/l

26.6 ± 0.5

5.55 ± 0.10

79%

Faecal Coliforms

/100ml

1.05E+05 ± 465

1.57E+04 ± 165

85%