Problem 1- A 80,000 m³ well-mixed pond receives 300 m³/day of influent containing a contaminant "A" in a concentration of 300 mg/L. The pond operates in a steady state condition and discharges into a nearby river. Contaminant "A" decays biologically according to first-order kinectics. The reaction rate constant (decay coefficient) is 0.40 d1. Assume that no other losses or gains occurs in the pond (e.g., evaporation, seepage, or rainfall) and that the pond is completely mixed. a) Draw a complete mass balance diagram and show the control volume. b) What is the pond's retention time? c) Find the steady-state concentration of Contaminant "A" in the pond effluent that is discharged into the river.

Problem 1- A 80,000 m³ well-mixed pond receives 300 m³/day of influent containing a contaminant "A" in a concentration of 300 mg/L. The pond operates in a steady state condition and discharges into a nearby river. Contaminant "A" decays biologically according to first-order kinectics. The reaction rate constant (decay coefficient) is 0.40 d1. Assume that no other losses or gains occurs in the pond (e.g., evaporation, seepage, or rainfall) and that the pond is completely mixed. a) Draw a complete mass balance diagram and show the control volume. b) What is the pond's retention time? c) Find the steady-state concentration of Contaminant "A" in the pond effluent that is discharged into the river.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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