engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Sewage Sewage Treatment
Calculate the diameter of the tank required for a single-stage high rate trickling filter (HRTF), which is to yield an effluent BOD of 20 mg/l when treating settled domestic sewage of BOD 120 mg/l. Sewage and recirculation discharge is 2200 m3/d and 4000m3/d, respectively. Consider the depth of the tank as 1.5m and the treatability factor as 0.8.
1
23.2 m
2
26.8 m
3
24.6 m
4
25.4 m