California Wastewater Treatment Operator Practice Exam

Question: 1 / 400

Why is it important to maintain a horizontal weir in a clarifier?

to prevent short circuiting

It is important to maintain a horizontal weir in a clarifier to prevent short circuiting. Short circuiting can occur when the water or wastewater does not flow evenly across the settling area, resulting in some particles settling too quickly while others are not given enough time to settle. This can lead to ineffective clarifier performance and poor water quality.

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to increase settling time

to reduce aeration

to improve skimming

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