All solids that undergo sedimentation and screened organic matter in STP collectively constitute - Biology - Microbes in Human Welfare

Question

All solids that undergo sedimentation and screened organic matter
in STP collectively constitute

Ayush Gupta · Accepted Answer

Dear student, the correct option is (b) primary sludge All solids
that undergo sedimentation and screened organic matter in STP
collectively constitutes the primary sludge It is generated through
the process of chemical precipitation , sedimentation or any other
primary processes Whereas the activated biomass produced due to the
biological treatment is called as secondary sludge The sediment
formed during the physical treatment of the sewage is called as
primary sludge while the supernatant is termed as primary effluent
which is further sent for the biological treatment The masses of
essential bacteria associated with the fungal filaments are called
as Flocs They form meshwork like structure which help in the
increased aerobic decomposition Regards