Sewage treatment in which a portion of decomposer bacteria present in waste is recycled into the beginning of the process
A. Cyclic treatment
B. Activated sludge treatment
C. Primary treatment
D. Tertiary treatment
Answer: Option B
Solution (By Examveda Team)
Sewage treatment in which a portion of decomposer bacteria present in waste is recycled into the beginning of the process known as Activated sludge treatment.The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewater using aeration and a biological floc composed of bacteria and protozoa. It uses air (or oxygen) and microorganisms to biologically oxidize organic pollutants, producing a waste sludge containing the oxidized material.
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