Question

What happens during primary wastewater treatment? Choose one: A. Insoluble particles are removed by settling. B. Microbes are added to oxidize organic compounds to carbon dioxide. C. The wastewater is pumped into drinking water reservoirs. D. The wastewater is chlorinated to eliminate pathogens.

Answer 1

Answer: The process that happens during primary wastewater treatment is:

A. Insoluble particles are removed by settling.

Explanation: Settling is an operation that removes suspended particles in the water to be treated.