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Wastewater practice exam ACTUAL Questions and CORRECT Answers

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Wastewater practice exam ACTUAL Questions and CORRECT Answers Odors occur when treatment becomes - CORRECT ANSWER- Anaerobic What should an operator do before entering a manhole - CORRECT ANSWER

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Wastewater practice exam ACTUAL
Questions and CORRECT Answers
Odors occur when treatment becomes - CORRECT ANSWER✔✔- Anaerobic



What should an operator do before entering a manhole - CORRECT ANSWER✔✔- Test for
all hazardous gases and oxygen levels and ventilate the manhole before entering


What treatment devices is commonly used to separate and remove large solids from raw
wastewater - CORRECT ANSWER✔✔- a mechanically raked bar screen


What diseases are caused by pathogenic organisms that may be present in raw wastewater? -
CORRECT ANSWER✔✔- Hepatitis, typhoid, paratyphoid, dysentery, and cholera



What is typically used to dewater sludge? - CORRECT ANSWER✔✔- Belt press, Drying
beds, solid bowl centrifuge, and gravity thickener


Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet
wide and 20 feet deep - CORRECT ANSWER✔✔- 269,280


What is typically used whenever wastewater cannot flow to the treatment plant by gravity -
CORRECT ANSWER✔✔- Lift station



A centrifugal pump must be ? or it will not pump - CORRECT ANSWER✔✔- Primed



One common type of weir design for measuring flow is - CORRECT ANSWER✔✔- V-
Knotch


The operator would need to increase or decrease if the ? loading on the plant is high -
CORRECT ANSWER✔✔- increase/Organic

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