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

Why are grit chambers placed early in the treatment train?

Grit is abrasive and heavy, so removing it early protects pumps and prevents accumulation in downstream tanks Grit must be removed to provide carbon for biological treatment Grit removal lowers alkalinity in the aeration basin Grit removal eliminates the need for primary clarifiers

Correct Answer:

Grit is abrasive and heavy, so removing it early protects pumps and prevents accumulation in downstream tanks

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