Civil Engineering MCQAE Level Civil Engineering
The hydraulic loading (in m³/m²/day) with recirculation (r = 0.5) for a trickling filter of 30 m diameter and 2 m depth treating a flow of 6000 m³/day is
Environmental EngineeringEnvironmental EngineeringMEDIUM
Choose the correct answer
A
6.4
B
12.75
C
19.20
D
25.50
Correct Answer
B. 12.75
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Total flow with recirculation = 6000×(1+0.5)=9000 m³/day; area = π/4×30² = 706.9 m²; loading = 9000/706.9 ≈ 12.75 m³/m²/day.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.