WASTEWATER PRACTICE TEST (FLORIDA)
ENGLISH EXAM (2025) QUESTIONS WITH
VERIFIED CORRECT ANSWERS.
When working in a man hole, what would be the biggest
danger? - <<<Answers>>>>Asphyxiation
What is the benefit of step feed aeration? -
<<<Answers>>>>Treat higher flows in less space
What is classic sludge bulking caused from? -
<<<Answers>>>>Young sludge
What should be the maximum allowable level of TSS and
BOD in the effluent of a domestic wastewater facility in
accordance with FAC? - <<<Answers>>>>20 TSS, 20 BOD
or 90% removal
What does CBOD mean? - <<<Answers>>>>Carbonaceous
Biochemical Oxygen Demand
What is the minimum depth of a pond? - <<<Answers>>>>3
feet
,What causes the most wear to an impeller? -
<<<Answers>>>>Grit
If a pump will not start and you have power at the breaker,
what is the next logical step? - <<<Answers>>>>Check for
blown fuses
What affect does CL2, acid, and CO2 have on pH? -
<<<Answers>>>>Lower
As an operator, how do you control the anaerobic digestion
process? - <<<Answers>>>>Temperature and rate of raw
sludge feed
What is a true statement about recording data? -
<<<Answers>>>>There are many techniques to record data
According to FAC chapter 62-600, Domestic wastewater
facilities, your job as an operator during major process
breakdowns is to? - <<<Answers>>>>Maintain competent
documentation and record keeping
Short circuiting in a primary clarifier can be prevented by? -
<<<Answers>>>>Baffles
, What do you do if you experience a plant upset due to a
hydraulic overload? - <<<Answers>>>>Decrease WAS to
maintain microorganism population
A colored dye solution is added into the raw wastewater
entering a primary settling tank. The dye color was noticeable
in the effluent in 15 minutes and all of the color had passed
through the tank in 40 minutes. What does this indicate? -
<<<Answers>>>>Wastewater is passing through the tank too
quickly for effective settling
A spray field has a total of 80 acres and is divided into four
equal zones. Only one zone may be operated at a time and the
permit states that no more than 4 inches of water can be
applied to the zone. How long can a zone be operated at a rate
of 0.7 MGD before it must be rotated to another zone? -
<<<Answers>>>>3.1 days
Most activated sludge mixed-liquor suspended solids fall into
a range of what percent volatile content for municipal waste
when the process is operating properly? -
<<<Answers>>>>70 to 80%
What may be the first corrective action taken to resolve
floating sludge conditions in a secondary clarifier, given these
observations: SVI is 132; microscopic exam reveals
abundance of filamentous organisms -
<<<Answers>>>>Increase DO
ENGLISH EXAM (2025) QUESTIONS WITH
VERIFIED CORRECT ANSWERS.
When working in a man hole, what would be the biggest
danger? - <<<Answers>>>>Asphyxiation
What is the benefit of step feed aeration? -
<<<Answers>>>>Treat higher flows in less space
What is classic sludge bulking caused from? -
<<<Answers>>>>Young sludge
What should be the maximum allowable level of TSS and
BOD in the effluent of a domestic wastewater facility in
accordance with FAC? - <<<Answers>>>>20 TSS, 20 BOD
or 90% removal
What does CBOD mean? - <<<Answers>>>>Carbonaceous
Biochemical Oxygen Demand
What is the minimum depth of a pond? - <<<Answers>>>>3
feet
,What causes the most wear to an impeller? -
<<<Answers>>>>Grit
If a pump will not start and you have power at the breaker,
what is the next logical step? - <<<Answers>>>>Check for
blown fuses
What affect does CL2, acid, and CO2 have on pH? -
<<<Answers>>>>Lower
As an operator, how do you control the anaerobic digestion
process? - <<<Answers>>>>Temperature and rate of raw
sludge feed
What is a true statement about recording data? -
<<<Answers>>>>There are many techniques to record data
According to FAC chapter 62-600, Domestic wastewater
facilities, your job as an operator during major process
breakdowns is to? - <<<Answers>>>>Maintain competent
documentation and record keeping
Short circuiting in a primary clarifier can be prevented by? -
<<<Answers>>>>Baffles
, What do you do if you experience a plant upset due to a
hydraulic overload? - <<<Answers>>>>Decrease WAS to
maintain microorganism population
A colored dye solution is added into the raw wastewater
entering a primary settling tank. The dye color was noticeable
in the effluent in 15 minutes and all of the color had passed
through the tank in 40 minutes. What does this indicate? -
<<<Answers>>>>Wastewater is passing through the tank too
quickly for effective settling
A spray field has a total of 80 acres and is divided into four
equal zones. Only one zone may be operated at a time and the
permit states that no more than 4 inches of water can be
applied to the zone. How long can a zone be operated at a rate
of 0.7 MGD before it must be rotated to another zone? -
<<<Answers>>>>3.1 days
Most activated sludge mixed-liquor suspended solids fall into
a range of what percent volatile content for municipal waste
when the process is operating properly? -
<<<Answers>>>>70 to 80%
What may be the first corrective action taken to resolve
floating sludge conditions in a secondary clarifier, given these
observations: SVI is 132; microscopic exam reveals
abundance of filamentous organisms -
<<<Answers>>>>Increase DO
