engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Water Treatment Filtration
A city having a population of 100000 with an average demand of 160 lpcd to be provided with a rapid sand filter. Each backwashing period is of 30 mins and 5% of filtered water is used for backwashing. If the rate of filtration is 4000 L/hr/m2 and area of 1 filter bed is 50 m2 the number of filters required allowing 1 as a stand by is
Enter numerical value using the virtual keypad. Round off where necessary.