Which wastewater treatment stage is primarily addressed by the activated sludge process?
Answer
Secondary treatment
The activated sludge process is the core mechanism used during the secondary stage of wastewater treatment. While primary treatment focuses on the physical removal of settleable solids through screening or sedimentation, secondary treatment is dedicated to the biological stabilization of dissolved and fine organic solids. The process uses aeration to speed up the decomposition of these remaining pollutants.
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