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4. A city dišcharges urated with oxygen and flowing at the rate of 1500 cumecs during its us with a velocity of 0.1 mlsec. The 5-days BOD of sewage at the given ture is 280 mgl. Find when and where the critical D.O. deficit will the downstream portion of the river, and what is its amount. Assume nt of purification of the stream (f) as 4.0, and coefficient of de- tion (K) as 0.1.

4. A city dišcharges urated with oxygen and flowing at the rate of 1500 cumecs during its us with a velocity of 0.1 mlsec. The 5-days BOD of sewage at the given ture is 280 mgl. Find when and where the critical D.O. deficit will the downstream portion of the river, and what is its amount. Assume nt of purification of the stream (f) as 4.0, and coefficient of de- tion (K) as 0.1.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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4. A city discharges 100 cumecs of sewage into a river, which is fully saturated with oxygen and flowing at the rate of 1500 cumecs during its lean days with a velocity of 0.1 m/sec. The 5-days BOD of sewage at the given temperature is 280 mgll. Find when and where the critical D.O. deficit will occur in the downstream portion of the river, and what is its amount. Assume coefficient of purification of the stream (f) as 4.0, and coefficient of de- oxygenation (K) as 0.1.
Transcribed Image Text:4. A city discharges 100 cumecs of sewage into a river, which is fully saturated with oxygen and flowing at the rate of 1500 cumecs during its lean days with a velocity of 0.1 m/sec. The 5-days BOD of sewage at the given temperature is 280 mgll. Find when and where the critical D.O. deficit will occur in the downstream portion of the river, and what is its amount. Assume coefficient of purification of the stream (f) as 4.0, and coefficient of de- oxygenation (K) as 0.1.
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