It takes 22 hours for water to flow from point A to Point B in a river. The flow rate and BOD5 in the river are 20m/h and 2mg/L, respectively. A wastewater of flow rate 2m/h containing BOD; of 150 mg/L is discharged into the river at point A. Calculate BOD; concentration at downstream Point B by treating the river as 11 CMFRS in series with equal hydraulic detention times. The first order decay coefficient k of the BOD; is assumed to be 0.05/h.

It takes 22 hours for water to flow from point A to Point B in a river. The flow rate and BOD5 in the river are 20m/h and 2mg/L, respectively. A wastewater of flow rate 2m/h containing BOD; of 150 mg/L is discharged into the river at point A. Calculate BOD; concentration at downstream Point B by treating the river as 11 CMFRS in series with equal hydraulic detention times. The first order decay coefficient k of the BOD; is assumed to be 0.05/h.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.6P

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