5/8/25, 3:53 PM Wastewater operator exam 2025 COMPREHENSIVE EXAM QUESTIONS WITH DETAILED VERIFIED AND 100% CORRECT …
Wastewater operator exam 2025 COMPREHENSIVE EXAM
QUESTIONS WITH DETAILED VERIFIED AND 100%
CORRECT ANSWERS BRAND NEW EXAM ALREADY
GRADED A+!!
Save
Terms in this set (67)
How is sludge determined? MCRT
What is a sludge blanket? layer of solids on the bottom of the clarifier
How much oxygen depletion is 2 mg/L
needed for a valid BOD test?
The highest removal efficiencies in Warm weather
an RBC will occur in?
What are the predominant Rotifers and nematodes
organisms indicative of old
sludge?
For security purposes where Hidden from view
should a POTW/WRRF be built?
What measurement is used to UV intensity
determine UV effectiveness?
What is the hydraulic loading for a 88.5 gpd/ft squared
trickling filter system that has a
diameter of 60 ft and influent flow
of 0.25 mgd?
Which piece of equipment is not triple beam balance
used for suspended solids testing
Which conditions favor the growth Low DO, low F/M
of filamentous organism in the
activated sludge process?
What is the purpose of a SCADA Control equipment and collect data points
system
Which of the following temps on 35 degrees C
the centigrade scale does a
reading of 95 degrees Fahrenheit
closely correspond to?
https://quizlet.com/1041512297/wastewater-operator-exam-2025-comprehensive-exam-questions-with-detailed-verified-and-100-correct-answers-… 1/5
, 5/8/25, 3:53 PM Wastewater operator exam 2025 COMPREHENSIVE EXAM QUESTIONS WITH DETAILED VERIFIED AND 100% CORRECT …
What is the sequence of steps Fill, react, settle, decant
needed for proper operation of a
sequencing batch reactor (SBR)
What time of day are DO levels Night
the lowest in a facultative lagoon
What is the primary function if the dissipate velocity
center ring in a clarifier
A wet well is 5ft in diameter and 15 minuets
has 12 ft of water. A pump with a
speed of 55 gpm turns off at 6ft.
About how long will it take to
pump the well down from 12ft to
6ft?
Reviewing all aspects of the Vulnerability assessment
wastewater treatment system to
determine what would occur
during various types of
emergency situations in known as
a
What volume of glucose-glutamic 6.0 mL
acid is required when directly
adding to a standard 300 mL BOD
dilution bottle?
What is the penalty for falsifying Felony
lab data
For a trickling filter, organic lb BOD5/d/1000ft3
loading is typically expressed as
What is the minimum detention 30 minuets
time for a chlorine contact
chamber
In a centrifugal pump, internal wear rings
leakage is prevented by
How is a sour digester corrected add lime
wastewater entering a treatment somewhat warmer than unheated tap water
plant is typically
What bacteria are responsible for methanogens
stabilizing sludge in an anaerobic
digester
The two type of RBC drive mechanical and air
mechanisms are
Which are waterborne diseases typhoid, dysentery, cholera
https://quizlet.com/1041512297/wastewater-operator-exam-2025-comprehensive-exam-questions-with-detailed-verified-and-100-correct-answers-… 2/5
Wastewater operator exam 2025 COMPREHENSIVE EXAM
QUESTIONS WITH DETAILED VERIFIED AND 100%
CORRECT ANSWERS BRAND NEW EXAM ALREADY
GRADED A+!!
Save
Terms in this set (67)
How is sludge determined? MCRT
What is a sludge blanket? layer of solids on the bottom of the clarifier
How much oxygen depletion is 2 mg/L
needed for a valid BOD test?
The highest removal efficiencies in Warm weather
an RBC will occur in?
What are the predominant Rotifers and nematodes
organisms indicative of old
sludge?
For security purposes where Hidden from view
should a POTW/WRRF be built?
What measurement is used to UV intensity
determine UV effectiveness?
What is the hydraulic loading for a 88.5 gpd/ft squared
trickling filter system that has a
diameter of 60 ft and influent flow
of 0.25 mgd?
Which piece of equipment is not triple beam balance
used for suspended solids testing
Which conditions favor the growth Low DO, low F/M
of filamentous organism in the
activated sludge process?
What is the purpose of a SCADA Control equipment and collect data points
system
Which of the following temps on 35 degrees C
the centigrade scale does a
reading of 95 degrees Fahrenheit
closely correspond to?
https://quizlet.com/1041512297/wastewater-operator-exam-2025-comprehensive-exam-questions-with-detailed-verified-and-100-correct-answers-… 1/5
, 5/8/25, 3:53 PM Wastewater operator exam 2025 COMPREHENSIVE EXAM QUESTIONS WITH DETAILED VERIFIED AND 100% CORRECT …
What is the sequence of steps Fill, react, settle, decant
needed for proper operation of a
sequencing batch reactor (SBR)
What time of day are DO levels Night
the lowest in a facultative lagoon
What is the primary function if the dissipate velocity
center ring in a clarifier
A wet well is 5ft in diameter and 15 minuets
has 12 ft of water. A pump with a
speed of 55 gpm turns off at 6ft.
About how long will it take to
pump the well down from 12ft to
6ft?
Reviewing all aspects of the Vulnerability assessment
wastewater treatment system to
determine what would occur
during various types of
emergency situations in known as
a
What volume of glucose-glutamic 6.0 mL
acid is required when directly
adding to a standard 300 mL BOD
dilution bottle?
What is the penalty for falsifying Felony
lab data
For a trickling filter, organic lb BOD5/d/1000ft3
loading is typically expressed as
What is the minimum detention 30 minuets
time for a chlorine contact
chamber
In a centrifugal pump, internal wear rings
leakage is prevented by
How is a sour digester corrected add lime
wastewater entering a treatment somewhat warmer than unheated tap water
plant is typically
What bacteria are responsible for methanogens
stabilizing sludge in an anaerobic
digester
The two type of RBC drive mechanical and air
mechanisms are
Which are waterborne diseases typhoid, dysentery, cholera
https://quizlet.com/1041512297/wastewater-operator-exam-2025-comprehensive-exam-questions-with-detailed-verified-and-100-correct-answers-… 2/5
