The municipal corporation of a city cleans and purifies soiled and dirty water by the process of
A
Al hydration treatment
B
RO treatment
C
Sewage treatment
D
Chlorination treatment
Correct Option:
C
Explanation
Municipal dirty water is treated through sewage treatment, which includes processes such as screening, sedimentation, biological treatment and, where required, disinfection. Chlorination may be one stage, but it is not the complete wastewater-treatment process, while RO is not the routine basic process for an entire city's sewage.
