(a)Sketch a typical Streeter-Phelps oxygen-sag curve and state its limitations.dD(b)The rate of change of the dissolved oxygen deficit, ", is the net effect of the rate ofdtre-aeration, given as – k D, and the rate of oxygen utilization, given as k,Le ,where ko, ka and Lo are the re-aeration rate constant, the decay constant, and theultimate BOD, respectively.Write the expression for the rate of change of the dissolved oxygen deficit. Then arguewhy the maximum deficit, De, occurring at the critical time, to, is given by:ka LeD.k.

Limitations: The model ignores BOD removal by sedimentation, the conversion of suspended BOD to a…

(a) Sketch a typical Streeter-Phelps oxygen-sag curve and state its limitations. (b) dD ,is the net effect of the rate of dt The rate of change of the dissolved oxygen deficit, re-aeration, given as-k,D, and the rate of oxygen utilization, given as k,Le, where ka, ka and Lo are the re-aeration rate constant, the decay constant, and the ultimate BOD, respectively.

(a) Sketch a typical Streeter-Phelps oxygen-sag curve and state its limitations. (b) dD ,is the net effect of the rate of dt The rate of change of the dissolved oxygen deficit, re-aeration, given as-k,D, and the rate of oxygen utilization, given as k,Le, where ka, ka and Lo are the re-aeration rate constant, the decay constant, and the ultimate BOD, respectively.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.32P

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