Question

Given below is the flow chart of sewage treatment. Identify A, B, C and D and select the correct option.

• A. A-Mechanical agitation; B-Increased BOD C-Activated sludge; D-Aerobic sludge digesters
• B. A-Mechanical agitation; B-Reduced BOD C-Activated sludge; D-Anaerobic sludge digesters
• C. A-Microbial digestion; B-Activated sludge C-Reduced BOD; D-Anaerobic sludge digesters
• D. A-Microbial digestion; B-Mechanical agitation C-Reduced BOD; D-Aerobic sludge digesters

Answer 1

The correct option is B A-Mechanical agitation; B-Reduced BOD C-Activated sludge; D-Anaerobic sludge digesters

A is Mechanical agitation; B is Reduced BOD; C is Activated sludge; D is Anaerobic sludge digesters.

So, the correct option is 'A-Mechanical agitation; B-Reduced BOD ;C-Activated sludge; D-Anaerobic sludge digesters'