WASTEWATER OPERATOR
CERTIFICATION STUDY GUIDE-
GRADE 2
General Wastewater Treatment:
What is the pressure head caused by? - ANSWERS-Water elevation
General Wastewater Treatment:
What color should the piping be that contains reclaimed water? -
ANSWERS-purple
General Wastewater Treatment:
What is the term for the height to which a column of water will rise in
a well. - ANSWERS-piezometric surface
General Wastewater Treatment:
In general, what is the maximum practical lift of pumps - ANSWERS-
15-25ft
,General Wastewater Treatment:
Which one of the following valves is the best to use in throttling a
flow situation?
a. gate
b. butterfly
c. globe
d. ball - ANSWERS-globe
General Wastewater Treatment:
Which one of the following devices is used to measure water depths
in storage facilities?
a. transducer
b. Venturi meter
c. magnetic sensor
d. thermistor - ANSWERS-transducer
Wastewater Treatment Facilities:
The velocity in sanitary sewers is approximately: - ANSWERS-2 ft/s
Wastewater Treatment Facilities:
,The distance between manholes ranges from - ANSWERS-300-500ft
Wastewater Treatment Facilities:
What should the flow velocity be through a grit channel -
ANSWERS-1.0 ft/s
Wastewater Treatment Facilities:
Grit washers are used to______
a. remove some of the organic matter
b. remove large pieces of wood
c. remove rags and eggshells
d. remove the odors - ANSWERS-remove some of the organic matter
Wastewater Treatment Facilities:
The most common flow-measure device for wastewater is a_____ -
ANSWERS-parshall flume
Wastewater Treatment Facilities:
, The detention time for primary clarifiers usually has a range
of_____hr/s - ANSWERS-1.5-2hr
Wastewater Treatment Facilities:
The effluent from which process is called mixed liquor
a.secondary clarification
b. primary clarification
c. sludge drying bed or pond
d. activated sludge - ANSWERS-activated sludge
Wastewater Treatment Facilities:
Aerobic ponds usually range in depth from ___-____ft - ANSWERS-
3-6ft
Wastewater Treatment Facilities:
Anaerobic ponds usually range in depth from___-___ft - ANSWERS-
8-12ft
Wastewater Treatment Facilities:
CERTIFICATION STUDY GUIDE-
GRADE 2
General Wastewater Treatment:
What is the pressure head caused by? - ANSWERS-Water elevation
General Wastewater Treatment:
What color should the piping be that contains reclaimed water? -
ANSWERS-purple
General Wastewater Treatment:
What is the term for the height to which a column of water will rise in
a well. - ANSWERS-piezometric surface
General Wastewater Treatment:
In general, what is the maximum practical lift of pumps - ANSWERS-
15-25ft
,General Wastewater Treatment:
Which one of the following valves is the best to use in throttling a
flow situation?
a. gate
b. butterfly
c. globe
d. ball - ANSWERS-globe
General Wastewater Treatment:
Which one of the following devices is used to measure water depths
in storage facilities?
a. transducer
b. Venturi meter
c. magnetic sensor
d. thermistor - ANSWERS-transducer
Wastewater Treatment Facilities:
The velocity in sanitary sewers is approximately: - ANSWERS-2 ft/s
Wastewater Treatment Facilities:
,The distance between manholes ranges from - ANSWERS-300-500ft
Wastewater Treatment Facilities:
What should the flow velocity be through a grit channel -
ANSWERS-1.0 ft/s
Wastewater Treatment Facilities:
Grit washers are used to______
a. remove some of the organic matter
b. remove large pieces of wood
c. remove rags and eggshells
d. remove the odors - ANSWERS-remove some of the organic matter
Wastewater Treatment Facilities:
The most common flow-measure device for wastewater is a_____ -
ANSWERS-parshall flume
Wastewater Treatment Facilities:
, The detention time for primary clarifiers usually has a range
of_____hr/s - ANSWERS-1.5-2hr
Wastewater Treatment Facilities:
The effluent from which process is called mixed liquor
a.secondary clarification
b. primary clarification
c. sludge drying bed or pond
d. activated sludge - ANSWERS-activated sludge
Wastewater Treatment Facilities:
Aerobic ponds usually range in depth from ___-____ft - ANSWERS-
3-6ft
Wastewater Treatment Facilities:
Anaerobic ponds usually range in depth from___-___ft - ANSWERS-
8-12ft
Wastewater Treatment Facilities:
