What happens in sedimentation after coagulation and flocculation?

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Prepare for the ADEQ Water Treatment Grade 4 Test. Study with flashcards and multiple-choice questions, with each question offering hints and explanations. Ace your exam!

Multiple Choice

What happens in sedimentation after coagulation and flocculation?

Explanation:
In sedimentation after coagulation and flocculation, the large, heavier flocs are allowed to settle to the bottom by gravity. This gravity-driven settling separates most of the suspended solids, giving clearer water at the top that can move on to filtration. The sludge collects at the bottom and is removed. This step is distinct from filtration (which comes next) and disinfection (which typically occurs after filtration). Coagulant is added earlier in the process, not again during sedimentation.

In sedimentation after coagulation and flocculation, the large, heavier flocs are allowed to settle to the bottom by gravity. This gravity-driven settling separates most of the suspended solids, giving clearer water at the top that can move on to filtration. The sludge collects at the bottom and is removed. This step is distinct from filtration (which comes next) and disinfection (which typically occurs after filtration). Coagulant is added earlier in the process, not again during sedimentation.

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