Wastewater Operator certification Study
Guide-Grade 2 Already Passed
General Wastewater Treatment:
What is the pressure head caused by? ✔✔Water elevation
General Wastewater Treatment:
What color should the piping be that contains reclaimed water? ✔✔purple
General Wastewater Treatment:
What is the term for the height to which a column of water will rise in a well. ✔✔piezometric
surface
General Wastewater Treatment:
In general, what is the maximum practical lift of pumps ✔✔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 ✔✔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 ✔✔transducer
,Wastewater Treatment Facilities:
The velocity in sanitary sewers is approximately: ✔✔2 ft/s
Wastewater Treatment Facilities:
The distance between manholes ranges from ✔✔300-500ft
Wastewater Treatment Facilities:
What should the flow velocity be through a grit channel ✔✔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 ✔✔remove some of the organic matter
Wastewater Treatment Facilities:
The most common flow-measure device for wastewater is a_____ ✔✔parshall flume
Wastewater Treatment Facilities:
The detention time for primary clarifiers usually has a range of_____hr/s ✔✔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
Guide-Grade 2 Already Passed
General Wastewater Treatment:
What is the pressure head caused by? ✔✔Water elevation
General Wastewater Treatment:
What color should the piping be that contains reclaimed water? ✔✔purple
General Wastewater Treatment:
What is the term for the height to which a column of water will rise in a well. ✔✔piezometric
surface
General Wastewater Treatment:
In general, what is the maximum practical lift of pumps ✔✔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 ✔✔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 ✔✔transducer
,Wastewater Treatment Facilities:
The velocity in sanitary sewers is approximately: ✔✔2 ft/s
Wastewater Treatment Facilities:
The distance between manholes ranges from ✔✔300-500ft
Wastewater Treatment Facilities:
What should the flow velocity be through a grit channel ✔✔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 ✔✔remove some of the organic matter
Wastewater Treatment Facilities:
The most common flow-measure device for wastewater is a_____ ✔✔parshall flume
Wastewater Treatment Facilities:
The detention time for primary clarifiers usually has a range of_____hr/s ✔✔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
