wastewater practice exam
Study online at https://quizlet.com/_2bwgu7
1. Odors occur when treatment becomes Anaerobic
2. What should an operator do before entering a man- Test for all hazardous gas-
hole es and oxygen levels and
ventilate the manhole be-
fore entering
3. What treatment devices is commonly used to separate a mechanically raked bar
and remove large solids from raw wastewater screen
4. What diseases are caused by pathogenic organisms Hepatitis, typhoid, paraty-
that may be present in raw wastewater? phoid, dysentery, and
cholera
5. What is typically used to dewater sludge? Belt press, Drying beds,
solid bowl centrifuge, and
gravity thickener
6. Calculated the volume in gallons of a rectangular aer- 269,280
ation tank that is 60 feet long, 30 feet wide and 20 feet
deep
7. What is typically used whenever wastewater cannot Lift station
flow to the treatment plant by gravity
8. A centrifugal pump must be ? or it will not pump Primed
9. One common type of weir design for measuring flow V-Knotch
is
10. The operator would need to increase or decrease if the increase/Organic
? loading on the plant is high
11. Total sedimentation test
1/3
Study online at https://quizlet.com/_2bwgu7
1. Odors occur when treatment becomes Anaerobic
2. What should an operator do before entering a man- Test for all hazardous gas-
hole es and oxygen levels and
ventilate the manhole be-
fore entering
3. What treatment devices is commonly used to separate a mechanically raked bar
and remove large solids from raw wastewater screen
4. What diseases are caused by pathogenic organisms Hepatitis, typhoid, paraty-
that may be present in raw wastewater? phoid, dysentery, and
cholera
5. What is typically used to dewater sludge? Belt press, Drying beds,
solid bowl centrifuge, and
gravity thickener
6. Calculated the volume in gallons of a rectangular aer- 269,280
ation tank that is 60 feet long, 30 feet wide and 20 feet
deep
7. What is typically used whenever wastewater cannot Lift station
flow to the treatment plant by gravity
8. A centrifugal pump must be ? or it will not pump Primed
9. One common type of weir design for measuring flow V-Knotch
is
10. The operator would need to increase or decrease if the increase/Organic
? loading on the plant is high
11. Total sedimentation test
1/3
