125 m³/s of a sewage is discharged in a river which is fully saturated with O, and flow at a minimum rate = 1600 m³/s with a minimum velocity of 0.12 m/s. If the 5 day BOD of the sewage is 300 mg/l. Find out where the critical DO will occur in the river. Assume coefficient of purification of river = 4.0 k₁ = 0.11/day BOD = 1.25 BOD Assume sat DO at 20° 9.2 mg/l

125 m³/s of a sewage is discharged in a river which is fully saturated with O, and flow at a minimum rate = 1600 m³/s with a minimum velocity of 0.12 m/s. If the 5 day BOD of the sewage is 300 mg/l. Find out where the critical DO will occur in the river. Assume coefficient of purification of river = 4.0 k₁ = 0.11/day BOD = 1.25 BOD Assume sat DO at 20° 9.2 mg/l

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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Question

125 m³/s of a sewage is discharged in a river which is fully saturated with O, and flow at a minimum
Fate = 1600 m³/s with a minimum velocity of 0.12 m/s. If the 5 day BOD of the sewage is 300 mg/L.
Find out where the critical DO will occur in the river.
Assume coefficient of purification of river = 4.0
k₁ = 0.11/day
BOD
1.25.BOD
Assume sat DO at 20° = 9.2 mg/l

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