After screening and presedimentation, there should be a significant reduction in which parameter?

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Multiple Choice

After screening and presedimentation, there should be a significant reduction in which parameter?

Explanation:
Screening and presedimentation are early treatment steps aimed at removing the largest solids from the water before it moves on to finer treatment. Screening physically removes large debris, while presedimentation allows heavier particles to settle out by gravity. This combination leads to a substantial drop in sediment and debris in the flow. Turbidity, algae, and dissolved or colloidal contaminants like iron and manganese are addressed later or with different processes, so the most significant reduction from these initial steps is the removal of sediment and other debris.

Screening and presedimentation are early treatment steps aimed at removing the largest solids from the water before it moves on to finer treatment. Screening physically removes large debris, while presedimentation allows heavier particles to settle out by gravity. This combination leads to a substantial drop in sediment and debris in the flow. Turbidity, algae, and dissolved or colloidal contaminants like iron and manganese are addressed later or with different processes, so the most significant reduction from these initial steps is the removal of sediment and other debris.

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