initial concentration of COD (mg/L)

COD removal (%)

resources

Anaerobic sequencing batch reactor

17,000

64 - 85

[11]

6000

80

[12]

Up-flow anaerobic sludge blanket (UASB)

45,000 - 90,000

71

[15]

6000

77

[23]

Moving-bed biofilm reactor (MBBR)

800 - 2000

20

[24]

7500 - 7900

8

[25]

Membrane bioreactor (MBR)

1000 - 3000

80 - 83

[26]

1550

63

[20]

14,000

80

[27]

aerobic sequencing batch reactor (ASBR)

4000

87

[21]

3200

30

[28]

Aerated lagoons

1740

75

[22]

5518

97

[29]