Microbial Role in SCP & Soil — NEET Biology

Which of the following statements are NOT correct concerning the significance and outcomes of microbial sewage treatment? S1: The primary goal of sewage treatment is to convert pathogenic microbes into non-pathogenic forms, making the water suitable for direct human consumption. S2: Biogas, generated during the anaerobic digestion of activated sludge, is a valuable byproduct that can be utilized as a fuel source. S3: The treated effluent, after secondary treatment, is typically discharged into natural water bodies, which helps in the replenishment of freshwater resources. S4: Microbial sewage treatment is limited in its capacity to handle the increasing urbanisation, and modern chemical technologies have largely replaced it due to higher efficiency. S5: Reduction in the polluting potential of wastewater is primarily measured by the increase in its Biochemical Oxygen Demand (BOD) value.