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Wastewater Operator certification Study Guide-Grade 2 Exam A+ Rated
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Wastewater Operator certificationStudy Guide-Grade 2 Exam A+ Rated
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
d. activated sludge - -activated sludge
-Wastewater Treatment Facilities:
Aerobic ponds usually range in depth from ___-____ft - -3-6ft
-Wastewater Treatment Facilities:
Anaerobic ponds usually range in depth from___-___ft - -8-12ft
-Wastewater Treatment Facilities:
Another name for a waste stabilization pond is - -raw wastewater lagoon
, -Wastewater sources & characteristics:
Typically what average percent of total solids in a domestic wastewater, both
dissolved and suspended, are inorganics - -50%
-Wastewater sources & characteristics:
Typically, what average percent of total solids in domestic wastewater, both
dissolved and suspended, are inorganics? - -50%
-Wastewater sources & characteristics:
Approx. what % of the dissolved solids in wastewater are inorganics - -87%
-Wastewater sources & characteristics:
Approximately what % of the dissolved solids in wastewater are organics - -
12%
-Wastewater sources & characteristics:
Which organism wold most probably be associated with moderate sludge age
and effluent water quality - -free-swimming ciliates
-Wastewater sources & characteristics:
Which organism would most probably be associated with high suspended
solids and biochemical oxygen demand (BOD) - -amoebas
-Wastewater sources & characteristics:
High suspended solids and BOD are most probably associated with which
type of organisms? - -flagellates
-Wastewater sources & characteristics:
What organism would most likely enhance the penetration of oxygen into the
activated sludge - -rotifers
-Rocks/Screens/Comminutors & Grit Removal:
Chlorine gas has a specific gravity of - -2.5 specific gravity
-Rocks/Screens/Comminutors & Grit Removal:
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