engineering recuitment BMC Sub Engineer Mock Test 2024 Environmental Engineering Water Treatment Sedimentation
In a sewage treatment system, a grit chamber of dimensions 10 m × 1.5 m × 0.75 m liquid depth has a flow of 750 m3 / h. The surface loading rate and detention time of the grit chamber are respectively:
1
5 m3 / h / m2; 0.9 min
2
5000 l / h / m2; 9 min
3
50 m3 / h / m2; 1.8 min
4
50,000 l / h / m2; 0.9 min
5
100,000 l / h / m2; 1.8 min