engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Water Treatment Filtration
A rapid sand filter is required to treat the flow of 0.50 m3/sec. The filtration rate is 120 m3 per day per m2 of filter area. Each filter is washed for 5 minutes every 24 hours at a wash rate of 15 mm per second per m2 of filter area. The filter remains out of operation for a total interval of 30 minutes per day. Calculate the minimum number of filters required if the area of each filter is 50 m2.
1
6
2
7
3
8
4
9