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Exam (elaborations)

WASTEWATER/PRACTICE EXAM QUESTIONS AND ANSWERS

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  • Course
  • Wastewater
  • Institution
  • Wastewater

WASTEWATER/PRACTICE EXAM QUESTIONS AND ANSWERS

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  • October 4, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Wastewater
  • Wastewater
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GEEKA
WASTEWATER/PRACTICE EXAM QUESTIONS AND
ANSWERS
When organic wastes are discharged to receiving waters, O2 is depleted by _____. -
Answers-bacteria

Hydrogen sulfide gives off an odor similar to____. - Answers-rotten eggs

3 diseases potentially carried by wastewater are _____. - Answers-typhoid fever,
disentery, cholera

Immediate first aid for butrns is to ____. - Answers-flood with cold water

What most likely causes an electic motor failure? - Answers-mopisture

What is the purpose of heating and mixing a primary anaeroibic digester? - Answers-to
increase the digestion rate

T/F: Exhaust from a chlorinator room should be taken form floor level. - Answers-True

T/F: Chlorine residual may be determined using the reagent _____ - Answers-diethyl-p-
phenylene diamine (DPD)

What test is typically never performed on wastewater influent? - Answers-fecal coliform

Considering the layout and flow diagram for the complete treament plant, oxidation ditch
plants would be most similar to _____? - Answers-extended aeration

The pressure against which a pump must operate is measured in terms of _____ -
Answers-kPA (psi)

T/F: Assuming aa constant suction head, the discharge of a centrifugal pump decreases
with an increase in discharge head. - Answers-True

T/F: The addition of chlorine, acid, carbon dioxide, or sulfuric acid will "lower" the pH of
wastewater? - Answers-True

T/F: Activated sludge generally "settle more slowly" than raw sludge. - Answers-True

T/F: Controlling the sludge wasting rate by constant MLSS concentration involves
maintaining a certain concentration of "volatile suspended solids in the reactor(aeration
tanks) - Answers-True

T/F: "Fungi" organisms should mot be present in a healthy lagoon treament system -
Answers-True

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