Where are methanogens found in a sewage treat | vedclass

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(D) In a sewage treatment plant,the secondary treatment involves the use of aerobic microbes to reduce the Biological Oxygen Demand $(BOD)$.After this

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Anaerobic sludge digester

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(D) In a sewage treatment plant,the secondary treatment involves the use of aerobic microbes to reduce the Biological Oxygen Demand $(BOD)$.After this,the sediment is passed into a large tank called an anaerobic sludge digester.In this tank,other kinds of bacteria,which grow anaerobically,digest the bacteria and the fungi in the sludge.During this digestion,bacteria produce a mixture of gases such as methane,hydrogen sulfide,and carbon dioxide,which form biogas.These bacteria are known as methanogens.

Where are methanogens found in a sewage treatment plant?

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Select the correct sequence with respect to sewage treatment.
$i$. Removal of suspended solid particles by primary treatment.
$ii$. Wastewater screening
$iii$. Anaerobic bacteria digest activated sludge.
$iv$. Treatment by flocs in aeration tank.
$v$. Grit settling

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