Question 2001 of 223 · California Water Treatment Operator Exam
What is the main purpose of coagulation in water treatment?
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 2001
- B: To neutralize the charge on suspended particles so they can clump together
Explanation
Coagulants such as alum or ferric chloride neutralize the negative surface charge of colloids. Flocculation then builds larger particles that can settle or be filtered.
More questions: Water Treatment Processes
- 2002Which chemical is most commonly used as a primary coagulant in drinking water plants?
- 2003Rapid (flash) mixing is used in a coagulation process to
- 2004Flocculation basins use slow, gentle mixing because
- 2005Which condition generally makes alum coagulation LESS effective?
- 2006When alum is added to water, it consumes alkalinity. If the raw water alkalinity is too low, the operator may need to add
- 2007What is the purpose of a sedimentation basin?