Civil Engineering > GATE 2017 SET-1 > Environmental Engineering
The wastewater having an organic concentration of 54 mg/l is flowing at a steady rate of 0.8 m3/day through a detention tank of dimensions 2 m x 4 m x 2 m. If the contents of the tank are well mixed and the decay constant is 0.1 per day, the outlet concentration (in mg/l, up to one decimal place) is _______.
Correct : 18
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