Question 1
First action for a polymer spill
CORRECT ANSWER
Apply an absorbent to the spill such as sand or kitty litter and then sweep up the materials.
Question 2
Total discharge head includes
CORRECT ANSWER
Discharge pressure head + static discharge head + Velocity head (outlet) + Friction Head
(discharge line)
Question 3
Where is the best location to collect a sample?
CORRECT ANSWER
A location that represents the entire waste stream or basin.
Question 4
What are the preservation and hold times for BOD samples?
CORRECT ANSWER
48 hours at < or = to 6 degrees C.
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@THE STUDY VAULT
,Question 5
Define BOD.
CORRECT ANSWER
The rate at which organisms use the oxygen in water or waste water while stabilizing
decomposeable organic matter under aerobic conditions.
Question 6
What is the purpose of a dessicator?
CORRECT ANSWER
To allow residual samples to control moisture prior to weighing.
Question 7
What will happen if the flow to the grit chamber is too low?
CORRECT ANSWER
Too much organic material will be deposited.
Question 8
How does an operator control the suspended solids in an activated sludge basin?
CORRECT ANSWER
By wasting and returning activated sludge.
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@THE STUDY VAULT
, Question 9
Chlorine combines with ammonia to form what
CORRECT ANSWER
Chloramines
Question 10
What can the operator control with the activated sludge process?
CORRECT ANSWER
Wasting and return rates.
Question 11
What is the best way to control filamentous bacteria?
CORRECT ANSWER
Addition of chlorine to the (RAS.) Called return on some tests.
Question 12
A 5.2 acre lagoon with an in-fluent of 47000 gallons per day is dropped 3 inches a day from
a depth of 5 feet to a depth of 2 feet. How many gallons are discharged each day?
CORRECT ANSWER
470,577 gallons per day (exact problem)
Question 13
Define endogenous respiration.
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@THE STUDY VAULT
First action for a polymer spill
CORRECT ANSWER
Apply an absorbent to the spill such as sand or kitty litter and then sweep up the materials.
Question 2
Total discharge head includes
CORRECT ANSWER
Discharge pressure head + static discharge head + Velocity head (outlet) + Friction Head
(discharge line)
Question 3
Where is the best location to collect a sample?
CORRECT ANSWER
A location that represents the entire waste stream or basin.
Question 4
What are the preservation and hold times for BOD samples?
CORRECT ANSWER
48 hours at < or = to 6 degrees C.
1
@THE STUDY VAULT
,Question 5
Define BOD.
CORRECT ANSWER
The rate at which organisms use the oxygen in water or waste water while stabilizing
decomposeable organic matter under aerobic conditions.
Question 6
What is the purpose of a dessicator?
CORRECT ANSWER
To allow residual samples to control moisture prior to weighing.
Question 7
What will happen if the flow to the grit chamber is too low?
CORRECT ANSWER
Too much organic material will be deposited.
Question 8
How does an operator control the suspended solids in an activated sludge basin?
CORRECT ANSWER
By wasting and returning activated sludge.
2
@THE STUDY VAULT
, Question 9
Chlorine combines with ammonia to form what
CORRECT ANSWER
Chloramines
Question 10
What can the operator control with the activated sludge process?
CORRECT ANSWER
Wasting and return rates.
Question 11
What is the best way to control filamentous bacteria?
CORRECT ANSWER
Addition of chlorine to the (RAS.) Called return on some tests.
Question 12
A 5.2 acre lagoon with an in-fluent of 47000 gallons per day is dropped 3 inches a day from
a depth of 5 feet to a depth of 2 feet. How many gallons are discharged each day?
CORRECT ANSWER
470,577 gallons per day (exact problem)
Question 13
Define endogenous respiration.
3
@THE STUDY VAULT
