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What gases are produced in anaerobic slu...

What gases are produced in anaerobic sludge digestres

A

Methane, hydrogen sulphide and `O_(2)`

B

Hydrogen sulphide and `CO_(2)`

C

Methane and `CO_(2)` only

D

Methane, hydrogen sulphide and `CO_(2)`

Text Solution

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The correct Answer is:
D
Marsh gas or Methane gas is mainly produced by the activites of anaeobic bacteria on sewage. Sewage contains large amounts of organic matter and microbes (bacteria and fungi) are digested during secondary treatment process of sewage by anaerobic bacteria. During digestion bacteira produce a mixture of gases such as methane, hydrogen sulphide and carbonodioxdie.
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  9. Wastewater treatment geneerates a large quantity of sludge, which can ...

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