engineering recuitment PPSC JE Civil Mock Test 2022 Environmental Engineering Sewage Sewage Treatment
In an activated sludge plant F/M (Food to Microorganisms) the ratio is equal to:
1
Mass of suspended solids in the system / Mass of the solids leaving the system per day
2
Daily BOD load applied to the aerotor system / Total microbial mass in the system
3
Mass of the solids leaving the system per day / Total microbial mass in the system
4
Mass of the suspended solids in the system / Microbial mass in the system