Question
In: Civil Engineering
A domestic wastewater with a flow of 1700 m3 / day will be treated in a...
A domestic wastewater with a flow of 1700 m3 / day will be treated in a biological treatment plant. Wastewater pre-settling tank effluent BOD value is 350 mg / L. If the volume of the biological reactor (ventilation reactor) is 500 m3, do you prefer a fully mixed or plug-flow reactor? Please explain the reasons.
Solutions
Expert Solution
for both plug flow and completely mixed
condition effluent concentration after biological treatment is same
and the volume of reactor is fixed. hence we can choose the
economical reactor. since completely mixed reactor uses external
energy for mixing and plug flow doesn't need any energy, plug flow
reactor is more economical than completely mixed reactor for the
given conditions. hence choose plug flow reactor.
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