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Tertiary treatment involves chemical and physical processes in addition to microbial degradation.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are involved in anaerobic digestion of sludge, not in secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Microbes play a key role in breaking down organic matter, which helps in waste management and recycling nutrients.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Sludge digestion is carried out by anaerobic bacteria, not aerobic bacteria.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
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