WASTEWATER OPERATOR CERTIFICATION STUDY
GUIDE GRADE 1
EXPECTED QUESTIONS WITH VERIFIED ANSWERS
Question 1.
Safety:
Which one of the following is a measure of a materials' opposition to the flow of electric current?
ANSWER
ohms
Question 2.
Activated Sludge:
Under normal operating conditions, what color is activated sludge
ANSWER
dark chocolate brown
Question 3.
Safety:
In a trench, ladders are required every
ANSWER
25 ft
Question 4.
Basic Chemistry:
The electrical potential between two points is measured in
ANSWER
volts
,Question 5.
Preliminary Treatment:
What is the angle of the bars on a manually cleaned bar screen?
ANSWER
30 degrees
Question 6.
Wastewater Solids Processing:
This solids treatment method cures the final product and then it may be applied to farmlands
ANSWER
composting
Question 7.
Maintenance:
Electron flow is measure in
ANSWER
amps
Question 8.
Wastewater Solids Processing:
This solids retention treatment method usually has 20 days of retention time:
ANSWER
aerobic digestion
Question 9.
Wastewater Solids Processing:
These solid treatment methods use a coagulant polymer and pressure
ANSWER
belt filter and plate
, Question 10.
WasteWater Sources & Characteristics:
In general, the solids content in wastewater is about
ANSWER
0.1%
Question 11.
Safety:
Why is it essential to ventilate a valve before entry
ANSWER
remove dangerous gases
Question 12.
Disinfection:
The fusible plug on a chlorine cylinder will start to melt at approximately?
ANSWER
160 degree F
Question 13.
Waste Treatment Ponds:
Which one of the following nuisance organisms is controller simply by the water surface being
disturbed by wind or currents?
ANSWER
mosquitoes
Question 14.
Basic Chemistry:
People working in and around wastewater must be immunized for
ANSWER
tetanus
GUIDE GRADE 1
EXPECTED QUESTIONS WITH VERIFIED ANSWERS
Question 1.
Safety:
Which one of the following is a measure of a materials' opposition to the flow of electric current?
ANSWER
ohms
Question 2.
Activated Sludge:
Under normal operating conditions, what color is activated sludge
ANSWER
dark chocolate brown
Question 3.
Safety:
In a trench, ladders are required every
ANSWER
25 ft
Question 4.
Basic Chemistry:
The electrical potential between two points is measured in
ANSWER
volts
,Question 5.
Preliminary Treatment:
What is the angle of the bars on a manually cleaned bar screen?
ANSWER
30 degrees
Question 6.
Wastewater Solids Processing:
This solids treatment method cures the final product and then it may be applied to farmlands
ANSWER
composting
Question 7.
Maintenance:
Electron flow is measure in
ANSWER
amps
Question 8.
Wastewater Solids Processing:
This solids retention treatment method usually has 20 days of retention time:
ANSWER
aerobic digestion
Question 9.
Wastewater Solids Processing:
These solid treatment methods use a coagulant polymer and pressure
ANSWER
belt filter and plate
, Question 10.
WasteWater Sources & Characteristics:
In general, the solids content in wastewater is about
ANSWER
0.1%
Question 11.
Safety:
Why is it essential to ventilate a valve before entry
ANSWER
remove dangerous gases
Question 12.
Disinfection:
The fusible plug on a chlorine cylinder will start to melt at approximately?
ANSWER
160 degree F
Question 13.
Waste Treatment Ponds:
Which one of the following nuisance organisms is controller simply by the water surface being
disturbed by wind or currents?
ANSWER
mosquitoes
Question 14.
Basic Chemistry:
People working in and around wastewater must be immunized for
ANSWER
tetanus
