Read the following statements and answer the questions that follow:- The primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and air is pump into it. This allows vigorous growth of useful aerobic microbes into flocs.

What do you mean by flocs?

Masses of bacteria associated with fungal filaments to form mesh like structures. Masses of bacteria and algae to form mesh like structures . Masses of bacteria only. None of these.

Masses of bacteria associated with fungal filaments to form mesh like structures.

In the context of wastewater treatment, flocs refer to masses of bacteria that are associated with fungal filaments, forming mesh-like structures. These flocs are created during the secondary or biological treatment stage of sewage treatment. The flocs help in the removal of organic matter from the wastewater by providing a surface for microbial attachment and aggregation. The flocs enhance the settling of suspended particles and aid in the clarification of the wastewater. Overall, flocs play a crucial role in the treatment of wastewater by promoting the growth of beneficial microbes and facilitating the removal of contaminants.