Civil Engineering > GATE 2021 SET-1 > Environmental Engineering
A secondary clarifier handles a total flow of 9600 m3/d from the aeration tank of a conventional activated-sludge treatment system. The concentration of solids in the flow from the aeration tank is 3000 mg/L. The clarifier is required to thicken the solids to 12000 mg/L and hence it is to be designed for a solid flux of 3.2 kg/m2-h. The surface area of the designed clarifier for thickening (in m3, in integer) is _______.
Correct : 375 to 375
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