engineering recuitment HPCL Engineer Mock Test 2024 Environmental Engineering Sewage Sewage Treatment
An activated sludge process operates at a flow rate of 540 m3/d having influent BOD5 of 200 mg/L. Volume of aeration tank is 60 m3 and biomass concentration in aeration tank is 3000 mg/L. The Food to Microorganism (F/M) ratio is
1
0.4
2
0.6
3
0.8
4
0.2