CWEA Maintenance Technologist 1 (MT1) Complete Practice Test 2025

Question: 1 / 400

What role do microbes play in the aeration process of wastewater treatment?

They reduce the volume of solid waste

They digest solids in the wastewater

Microbes play a critical role in the aeration process of wastewater treatment primarily through their ability to digest solids present in the wastewater. During aeration, the introduction of air creates an environment where aerobic microorganisms can thrive. These microorganisms consume organic matter, effectively breaking it down into simpler, less harmful compounds. This microbial digestion not only helps in reducing the volume of solid waste but also leads to the stabilization of organic material, turning it into biomass that can further be treated or removed.

In this context, the aerobic digestion process is essential for the decomposition of organic pollutants and contributes significantly to the overall effectiveness of the wastewater treatment system. By breaking down these solids, microbes assist in enhancing water quality, making it safer for discharge into the environment or for reuse processes.

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They filter out contaminants

They produce toxic substances

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