Question 4028 of 234 · California Wastewater Operator Exam
When dissolved oxygen in an aeration tank is too low, the most likely result is
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 4028
- C: poor treatment and growth of filamentous organisms
Explanation
Low DO limits aerobic activity and favors filaments with poor settling. Increasing air supply or reducing load restores treatment.
More questions: Secondary Treatment (Activated Sludge, Trickling Filters, RBC)
- 4029Which of the following is true about return activated sludge concentration compared to mixed liquor?
- 4030Which factor most affects the oxygen transfer in a diffused aeration system?
- 4031Suspended-growth treatment is best described as
- 4001In the activated sludge process, the activated sludge is
- 4002The purpose of returning activated sludge (RAS) from the secondary clarifier to the aeration tank is to
- 4003The purpose of wasting activated sludge (WAS) is to