Table 5 Evaluation of different anaerobic reactors for CSWW treatment

Modified UASB

68% COD removal and 85% methane content at 24 h HRT and 5 g/L.d OLR

[11]

Anaerobic baffled reactor (ABR)

Maximum COD reduction of 70% and 50–60% methane content at OLR of 0.2 kg COD/m³.d and HRT of 43 h

[46]

Anaerobic hybrid reactor (AHR)

79% COD reduction and 65% methane content at OLR of 3 kg COD/m³.d and HRT of 24 h

[47]

Anaerobic membrane bioreactor (AnMBR)

62% removal of COD and 64% methane content at 30 h HRT and 13.1 kg COD/m³.d

[48]

ICGASR

74% COD removal and 80% methane concentration at 24 h HRT and OLR of 3.3 kg COD/m³.d

Present study