Corrosion of concrete sewers is caused by:

Corrosion of concrete sewers is caused by:
| Corrosion of concrete sewers is caused by:

A. High pH value of sewage

B. Anaerobic decomposition of sewage solids

C. Aerobic decomposition of sewage solids

D. High velocity of flow of sewage

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

Corrosion in concrete sewers is mainly caused by Hydrogen sulphide gas which is formed due to Anaerobic decomposition of sewage. During Anaerobic Decomposition of sewage Acids, Alcohols and gases are formed and Hydrogen sulphide is one of the formed gases.

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