Question

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

Options

• A - Small aeration tank, B - Microbial digestion, C - High BOD, D - Activated sludge, E - Aerobic sludge digesters

• A - Large aeration tank, B - Mechanical agitation, C - Increased BOD, D - Activated sludge, E - Aerobic sludge digesters

• A - Small aeration tank, B - Microbial digestion C - Low BOD, D - Activated sludge, E - Anaerobic sludge digesters

• A - Large aeration tank, B - Mechanical agitation C - Reduced BOD, D - Activated sludge, E - Anaerobic sludge digesters

Answer 1

A - Large aeration tank, B - Mechanical agitation C - Reduced BOD, D - Activated sludge, E - Anaerobic sludge digesters.