Wastewater Treatment Operator Class III Practice Questions - ABC WPI Wastewater Treatment Operator Class III Certification Exam

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Which Class III process configuration places an anaerobic zone at the front of the train followed by anoxic, aerobic, post-anoxic, and re-aeration zones for combined nitrogen and phosphorus removal?

4-stage Bardenpho 5-stage Bardenpho Conventional plug-flow activated sludge Extended aeration

Correct Answer:

5-stage Bardenpho

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