$5$Study the given diagram of Sewage Treatment Plant (S.T.P.) and answer the questions that follow : 2022_CBSE_Biology_Set_Region5_Subset_Set2_Q5___p4_3

2022_CBSE_Biology_Set_Region5_Subset_Set2_Q5___p4_3

S.T.P. (Sewage Treatment Plant) (A) S.T.P. (Sewage Treatment Plant) (B) (a) Which one of the two 'S.T.P.' (A) or (B) will be more effective in treating the human excreta in the municipal waste? (b) Write the steps followed in carrying the treatment of the sewage in step (Z), once the BOD of sewage is reduced significantly till it is passed on to the "anaerobic sludge digesters".

Biology · Microbes in Human Welfare