engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 Environmental Engineering Sewage Sewage Treatment
Which of the following is a group, including only aerobic treatment units for sewage treatment?
1
Trickling filter, Oxidation pond, Activated sludge plant.
2
Septic tank, Imhoff tank, Sludge digestion tank.
3
Trickling filter, Septic tank, Oxidation pond.
4
Trickling filter, Oxidation pond, Imhoff tank.