Name the microbe in aeration tanks …

Microbes play a great role in sewage treatment............................. the first step is.............. primary treatment ...................which involve physical removal of large and small particles from the sewage.................,. through filtration and sedimentation..................... the floating debris is removed by filtration through wire mesh ...............................after this soil and small pebbles by sedimentation is settling thanks .....................this element which settle down is called primary sludge in the supernant form the primary affluent........................... in the primary Affluent is taken to the large aeration tanks with constant mechanical agitation Air Supply ............................why air supply so that aerobic microbes can grow and form flocs .....,.........??

Aerobic microbes