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Methanogens are involved in anaerobic sludge digestion, not in secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are not involved in primary treatment; they are used in anaerobic digestion of sludge.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
Methanogens are involved in anaerobic sludge digestion, not 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 sewage treatment by breaking down organic matter and reducing BOD.
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
Anaerobic digestion occurs in the sludge treatment stage, not in secondary treatment.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Sewage Treatment - Primary Secondary Activated Sludge
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