What is the retention time considered for the anoxic zone for the A2O process fo

Question

What is the retention time considered for the anoxic zone for the A2O process for removing phosphorus?

Options:

A . 0.5-1 hrs

B . 1-2 hrs

C . 2-4 hrs

D . 4-6 hrs

Answer: Option A
Answer: (a).0.5-1 hrs

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