Q261
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
AnswerC.
Primary treatment
D.
Tertiary treatment
Answer: Option B
Solution
Answer: Option B
Solution:
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.