Consequences of over-aeration in the A/O process
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The facility uses 2 sets of the same A/O process. Recently, a system was taken out of service for maintenance; the ammonia nitrogen level in Tank A was less than 0.02 mg/l, the COD level was 30 mg/l, and the sludge concentration was around 7,000. Current DO: 3mg/l. But aeration did not stop. What consequences will occur if aeration continues like this?
So what’s the situation with Pool O? The COD of the water entering tank O should also be low; operation at low load leads to sludge aging, turbid effluent, and a decrease in sludge concentration. Personal opinion, for reference only