During Secondary Aerobic Wastewater Treatment, Some of the Activated Sludge

question 57

Multiple Choice

During secondary aerobic wastewater treatment, some of the activated sludge goes________ while the rest goes________ .

• A) back to the aerator / to the anoxic sludge digestor
• B) to the anoxic digestor / back to the primary system
• C) back to the primary system / to the aerator
• D) back to the primary system / to the tertiary digestor

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