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प्रश्न
Which of the following occurs during tertiary treatment?
विकल्प
All physical processes take place.
The vigorous growth of useful aerobic microbes takes place.
Anaerobic bacteria grow and digest the bacteria and fungi in sludge.
Large pieces of floating debris are removed.
MCQ
उत्तर
Anaerobic bacteria grow and digest the bacteria and fungi in sludge.
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