Sewage treatment process in which part of decomposer bacteria is recycled into starting of the process is called
Options
(a) Cyclic treatment
(b) Primary treatment
(c) Teritary treatment
(d) Activated sludge treatment
Correct Answer:
Activated sludge treatment
Explanation:
Activated sludge treatment involves air or oxygen being introduced into a mixture of screened, and primary treated sewage or industrial wastewater (wastewater) combined with organisms to develop a biological floc which reduces the organic content of the sewage.