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In a sewage treatment facility, the function of the aeration tank is to
allow microorganisms to digest remaining dissolved solids in the water after they pass through the secondary clarifier.
provide oxygen to the water before it is discharged.
break down large particles of waste that will float to the surface to be removed during the next step in treatment.
remove harmful microorganisms by decreasing dissolved oxygen levels.
provide photosynthetic microorganisms dissolved oxygen to facilitate the digestion of dissolved solids.