Question 3011 of 234 · California Wastewater Operator Exam
The main function of a primary clarifier is to
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 3011
- A: settle solids and float grease so they can be removed
Explanation
Gravity settling in the clarifier produces primary sludge from the bottom and scum from the surface. It reduces the load on the secondary treatment process.
More questions: Preliminary and Primary Treatment
- 3012The typical detention time in a primary clarifier is
- 3013Which problem is most likely to result from leaving sludge in a primary clarifier too long?
- 3014A primary clarifier's overflow rate is calculated by dividing
- 3015If the flow to a clarifier increases and nothing else changes, the surface overflow rate will
- 3016Scum collected from a primary clarifier is normally sent to
- 3017Which is the best indicator that a primary clarifier is being operated properly?