The total flow at a wastewater-treatment plant is 1000 m³/day. The flow is split evenly and treated in two parallel complete mix biological aeration basins to remove BOD from the wastewater. They each have a volume of 100,000 L. (a) In hours, what is the hydraulic retention time in each tank? (b) If the influent BOD concentration is 150 mg/L and the zero-order decay coefficient is 60 mg/L-h, what is the steady state effluent concentration? (Hint: you need to derive the expression from the mass balance reaction for CMFR by replacing the first-order reaction term with zero order reaction) (
The total flow at a wastewater-treatment plant is 1000 m³/day. The flow is split evenly and treated in two parallel complete mix biological aeration basins to remove BOD from the wastewater. They each have a volume of 100,000 L. (a) In hours, what is the hydraulic retention time in each tank? (b) If the influent BOD concentration is 150 mg/L and the zero-order decay coefficient is 60 mg/L-h, what is the steady state effluent concentration? (Hint: you need to derive the expression from the mass balance reaction for CMFR by replacing the first-order reaction term with zero order reaction) (
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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