(i) Determine the peak flow rate (in m³/d) generated by the population (ii) Determine the minimum diameter required for a primary clarifier considering the minimum surface overflow rate of 45 m³/m²/d at peak flow Based on your answer in (ii), calculate the surface overflow rate (m²/m²/d) iii) during average flow

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Wasterwater Engineering Civil engineering 

20. A sewage treatment plant is designed to treat sewage from a population of 25,000
PE.
(i)
(ii)
3
Determine the peak flow rate (in m³/d) generated by the population
Determine the minimum diameter required for a primary clarifier
considering the minimum surface overflow rate of 45 m³/m²/d at peak flow
Based on your answer in (ii), calculate the surface overflow rate (m³/m²/d)
during average flow
(iii)
(iv)
If the BOD influent rate is 60 g/cap/d, and the primary clarifier efficiency is
65%, determine the BOD effluent from the clarifier in mg/L
Transcribed Image Text:20. A sewage treatment plant is designed to treat sewage from a population of 25,000 PE. (i) (ii) 3 Determine the peak flow rate (in m³/d) generated by the population Determine the minimum diameter required for a primary clarifier considering the minimum surface overflow rate of 45 m³/m²/d at peak flow Based on your answer in (ii), calculate the surface overflow rate (m³/m²/d) during average flow (iii) (iv) If the BOD influent rate is 60 g/cap/d, and the primary clarifier efficiency is 65%, determine the BOD effluent from the clarifier in mg/L
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