WASTEWATER PRACTICE EXAM COMPLETE FINAL EXAM
STUDY GUIDE WITH PRACTICE QUESTIONS AND
VERIFIED ANSWERS 2025–2026
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
STUDY GUIDE WITH PRACTICE QUESTIONS AND
VERIFIED ANSWERS 2025–2026
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
