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Design an activated sludge treatment unit with the following data for a town of population of...

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Civil Engineering

Design an activated sludge treatment unit with the followingdata for a town of population of 80,000:​
B.O.D. of raw sewage = 200 mg/l.
Per capita Average sewage flow is 180 liters.
B.O.D. removal in primary treatment = 60%,
Raw sludge retained in ASP = 25%
Effluent water should have NO BOD at all to satisfy NationalStandards.

Answer & Explanation Solved by verified expert
3.7 Ratings (321 Votes)
Sol Information provided in the problem Population of town 80000BOD of raw sewage 200 mglPer capita Average sewage flow is 180 litersBOD removal in primary treatment 60Raw sludge retained in ASP 25Now to design activated sludge treatment unit with the followingdata for a town can be done in following stepsStep 1 Daily sewage flow Q 180x80000 Lday 1000 14400m3dayBOD of sewage comming to aeration Yo 40 X 200 mgl 80mgl as 60 BOD removal in primary    See Answer
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