Aeration Tanks 

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 Clarifiers 


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Biological / Secondary Treatment - nature's way

In covered, oxygen rich aeration tanks, bacteria living in the wastewater consume most of the remaining solids. The bacteria and solids are separated from the wastewater in clarifiers. Some of the biomass is sent back to the aeration tanks to perform additional Secondary Treatment and some is thickened and then sent to the anaerobic digesters.