Question

what is activated sludge and how flocs are formed​

Answer 1

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• The process 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. ... This fraction of the floc is called return activated sludge (R.A.S.)

Answer 2

Answer:

The activated sludge process is a type of wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.