Question 1
When Chlorine is combined with water what type of pipe should be used?
A. Ductile iron
B. Asbestos concrete
C. PVC
D. Carbon Steel
CORRECT ANSWER
C. PVC
Question 2
A good settling sludge would consist of what type of protozoa?
A. Rotifers and nematodes
B. Amoebas and Flagellates
C. Stalked ciliates and mastagoria
D. Free swimmers and stalk ciliates
CORRECT ANSWER
D. Free swimmers and stalk ciliates
Question 3
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@THE STUDY VAULT
,What is Phenolphylein used for in titration
A. Oxidizer
B. Indicator
C. Acid reducer to lower pH
D. Applicator
CORRECT ANSWER
B. Indicator
Question 4
Your plant has an influent of 220 BOD and 163 TSS, and an effluent of 10 BOD, and 6 TSS.
What is the BOD removal efficiency in your plant?
A. 92%
B. 94%
C. 95%
D. 96%
CORRECT ANSWER
C. 95%
Question 5
You suspect your anaerobic digester is going sour. What is the best way to verify its
condition?
A. pH
B. Foam type
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,C. VA/ALK ratio
D. DO
CORRECT ANSWER
C. VA/ALK ratio
Question 6
Before operating any piece of equipment what should be done?
A. Lock out Tag out (remember, safety first!)
B. Read O & M manual
C. Read manufacturers manual
D. Notify supervisor
CORRECT ANSWER
C. Read manufacturers manual
Question 7
Detritus is noticed in your grit channel. What is the problem?
A. Velocity too fast with short D/T
B. Velocity too low with long D/T
C. Short circuiting
D. Density currents
CORRECT ANSWER
B. Velocity too low with long D/T
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, Question 8
What is considered normal operation of an aerobic digester?
A. Fill react
B. Skim off foam when needed
C. Settle and Decant as needed
D. Feed only during low flow or constant when the sun is out
CORRECT ANSWER
C. Settle and Decant as needed
Question 9
A plant with a flow of 1 MGD should be monitored
A. Continuously
B. Intermittently
C. Daily
D. Every four hours depending on surface load
CORRECT ANSWER
A. Continuously
Question 10
What do total solids consist of?
A. Dissolved and settleable
4
@THE STUDY VAULT
When Chlorine is combined with water what type of pipe should be used?
A. Ductile iron
B. Asbestos concrete
C. PVC
D. Carbon Steel
CORRECT ANSWER
C. PVC
Question 2
A good settling sludge would consist of what type of protozoa?
A. Rotifers and nematodes
B. Amoebas and Flagellates
C. Stalked ciliates and mastagoria
D. Free swimmers and stalk ciliates
CORRECT ANSWER
D. Free swimmers and stalk ciliates
Question 3
1
@THE STUDY VAULT
,What is Phenolphylein used for in titration
A. Oxidizer
B. Indicator
C. Acid reducer to lower pH
D. Applicator
CORRECT ANSWER
B. Indicator
Question 4
Your plant has an influent of 220 BOD and 163 TSS, and an effluent of 10 BOD, and 6 TSS.
What is the BOD removal efficiency in your plant?
A. 92%
B. 94%
C. 95%
D. 96%
CORRECT ANSWER
C. 95%
Question 5
You suspect your anaerobic digester is going sour. What is the best way to verify its
condition?
A. pH
B. Foam type
2
@THE STUDY VAULT
,C. VA/ALK ratio
D. DO
CORRECT ANSWER
C. VA/ALK ratio
Question 6
Before operating any piece of equipment what should be done?
A. Lock out Tag out (remember, safety first!)
B. Read O & M manual
C. Read manufacturers manual
D. Notify supervisor
CORRECT ANSWER
C. Read manufacturers manual
Question 7
Detritus is noticed in your grit channel. What is the problem?
A. Velocity too fast with short D/T
B. Velocity too low with long D/T
C. Short circuiting
D. Density currents
CORRECT ANSWER
B. Velocity too low with long D/T
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@THE STUDY VAULT
, Question 8
What is considered normal operation of an aerobic digester?
A. Fill react
B. Skim off foam when needed
C. Settle and Decant as needed
D. Feed only during low flow or constant when the sun is out
CORRECT ANSWER
C. Settle and Decant as needed
Question 9
A plant with a flow of 1 MGD should be monitored
A. Continuously
B. Intermittently
C. Daily
D. Every four hours depending on surface load
CORRECT ANSWER
A. Continuously
Question 10
What do total solids consist of?
A. Dissolved and settleable
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@THE STUDY VAULT
