A drain carrying 5 m3/s of wastewater with its BOD of 100 mg/l joins a steam carrying 50 m3/s flow with its BOD of 5 mg/l. What will be the value of the BOD of the combined flow after complete mixing?

A drain carrying 5 m3/s of wastewater with its BOD of 100 mg/l joins a

1.	A drain carrying 5 m3/s of wastewater with its BOD of 100 mg/l joins a steam carrying 50 m3/s flow with its BOD of 5 mg/l. What will be the value of the BOD of the combined flow after complete mixing?
A.	3.6 mg/l
B.	13.6 mg/l
C.	33.6 mg/l
D.	53.6 mg/l
Answer» C. 33.6 mg/l

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A drain carrying 5 m3/s of wastewater with its BOD of 100 mg/l joins a steam carrying 50 m3/s flow with its BOD of 5 mg/l. What will be the value of the BOD of the combined flow after complete mixing?

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