During wastewater treatment, the secondary treatment requires continual aeration to:

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During secondary treatment, wastewater undergoes a biological process called activated sludge, where bacteria breaks down organic matter into CO2, water, and inorganic compounds such as nitrates. Aeration provides oxygen to the bacteria, ensuring that they have enough energy to break down the organic matter efficiently. The breakdown products are CO2, water, and nitrates. Therefore, choice E maximizes the breakdown of molecules into CO2 and nitrates.

During Wastewater Treatment, the Secondary Treatment Requires Continual Aeration To