Practice question

MCQ

Question

Which of the following statements about microbes in sewage treatment is incorrect?

Options

Choose one · Correct answer highlighted

Primary treatment removes large and floating debris. Aerobic bacteria are involved in secondary treatment. Anaerobic digestion occurs in secondary treatment. Correct Activated sludge is used for further processing.

Explanation

Anaerobic digestion occurs in the sludge treatment stage, not in secondary treatment.

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