The minimum flow of a river is 60 m3/s having a dissolved oxygen (DO) content of 7 mg/1 (80% saturation) and BOD5 of 9 mg/1. It receives a waste water discharge of 6 m3/s with BOD5 of 210 me/1 and no DO. The rate constant for deoxygenation and re-aeration (both at base e) are 0.5/day and 1/day respectively. Velocity of river flow is 1 m/s. The minimum D0 occurs at a distance of km. (Roundoff to one decimal place) from the point of waste water discharge.

The minimum flow of a river is 60 m3/s having a dissolved oxygen (DO) content of 7 mg/1 (80% saturation) and BOD5 of 9 mg/1. It receives a waste water discharge of 6 m3/s with BOD5 of 210 me/1 and no DO. The rate constant for deoxygenation and re-aeration (both at base e) are 0.5/day and 1/day respectively. Velocity of river flow is 1 m/s. The minimum D0 occurs at a distance of km. (Roundoff to one decimal place) from the point of waste water discharge.

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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