Question

At a sewage treatment plant, what type of bacteria work (1)

(i) in the digester tank

(ii) in the aeration tank​

Answer 1

Answer:

2 is correct the aeration tank

Answer 2

Answer:

Aerobic bacteria use oxygen, which is added mechanically, to break down wastewater contaminants, converting it into energy. Bacteria use this energy to grow and reproduce. Anaerobic bacteria obtain oxygen from their food source. As anaerobic bacteria break down sludge, they produce methane gas.

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