engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Environmental Engineering Sewage Sewage Treatment
The working conditions in Imhoff tanks are -
1
aerobic only
2
anaerobic only
3
aerobic in lower compartment and anaerobic in upper compartment
4
anaerobic in lower compartment and aerobic in upper compartment
5
None of these