NEET BIOLOGY

Detailed explanation-1: -Assertion: A major part of the activated sludge is pumped into large tanks called anaerobic sludge digesters. Reason: During anaerobic digestion, the anaerobic bacteria digest the organisms present in the primary sludge.

Detailed explanation-2: -A small part of activated sludge is pumped into large tanks called anaerobic sludge digesters.

Detailed explanation-3: -Anaerobic digestion enhances the stabilization of sewage sludge, reduces pathogens and odor emission, and dry matter of sludge is reduced, which leads to a significant reduction in the final sludge volume.

Detailed explanation-4: -It is transferred to a separate tank where it is decomposed by the anaerobic bacteria. The biogas produced in the process can be used as fuel. After the aerator tank, microbes and human waste settle down and form activated sludge.

Detailed explanation-5: -26.5. The activated sludge process is an aerobic suspended growth treatment system in which microorganisms use the organic content of wastewater as an energy source and for survival and replication.