9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
Wastewater Class 2 Ohio ABC part 2 EXAM Already
Verified Test | Questions & Answers, Well
Elaborated | 100% Verified solutions |2026/2027
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Terms in this set (167)
The fecal coliform group is comprised C
of Escherichia coli and ____________.
A) streptococcu
B) Enterobactor
C) Klebsiella
D) Citrobacter
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,9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
Coliform bacteria are ____________. B
A) pathogens which cause hepatitis
B) more resistant to chlorination than
pathogenic bacteria
C) pathogens which cause typhoid
D) less resistant to chlorination than
pathogenic bacteria
The typical air-to-solids ratio for a A
dissolved air floatation unit is __________.
a. 0.02 to 0.04 kg/kg (0.02 to 0.04 lb/lb)
b. 10 to 40 kg/kg (10 to 40 lb/lb)
c. 0.2 to 0.4 kg/kg (0.2 to 0.4 lb/lb)
d. 1 to 5 kg/kg (1 to 5 lb/lb)
ORP stands for __________. D
a. Oxygen Recirculation Pump
b. Oxygen Reclamation Process
c. Oxygen Residual Probe
d. Oxidation-Reduction Potential
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,9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
A confined space atmosphere contains C
a combustible gas. At what percentage
of the Lower Explosive Limit (LEL) for
that gas is the atmosphere considered
"hazardous"?
19.5%
10%
15%
1%
When using an evaporator in D
disinfection, the chlorine-pressure-
reducing valve should be located
_________________.
next to the evaporator
inside the evaporator
upstream of the evaporator
downstream of the evaporator
The vapor density of a hazardous gas D
present in a confined space is 1.15.
Where is this gas likely to be found?
at this density, the gas will dissipate
immediately
near the ceiling
equally distributed throughout the
space
near the floor
A pH drop in an aerobic digester can C
be caused by ______________.
organic underloading
hydraulic overloading
nitrification or CO2 buildup
clogging of diffusers
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, 9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
A "dewatering beach is a component B
of a(n) ________.
anaerobic digester
centrifuge
belt filter press
aeration basin
Potassium permanganate is used for D
_______________.
stabilization
disinfection
coagulation
odor control
If a good floc forms before contacting D
a gravity belt thickener but the slurry
exiting the belt is very wet, the most
likely cause is _________________.
the rollers are not parallel
the belt tension is too tight
all of the above
the belt is dirty and clogged
Mean cell residence time (MCRT) is A
mathematically described as the mass
of solids (lb or kg) in a process
_____________________.
divided by the mass of solids leaving
the process (lb/d or kg/d)
multiplied by the amount of solids
entering the system (lb/d or kg/d)
divided by the concentration of solids
in the system (mg/L)
multiplied by the concentration of
solids in the system (mg/L or ppm)
https://quizlet.com/1205793880/wastewater-class-2-ohio-abc-part-2-exam-already-verified-test-questions-answers-well-elaborated-100-verified-soluti… 4/45
Wastewater Class 2 Ohio ABC part 2 EXAM Already
Verified Test | Questions & Answers, Well
Elaborated | 100% Verified solutions |2026/2027
Latest!!
Add to calendar
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (167)
The fecal coliform group is comprised C
of Escherichia coli and ____________.
A) streptococcu
B) Enterobactor
C) Klebsiella
D) Citrobacter
https://quizlet.com/1205793880/wastewater-class-2-ohio-abc-part-2-exam-already-verified-test-questions-answers-well-elaborated-100-verified-soluti… 1/45
,9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
Coliform bacteria are ____________. B
A) pathogens which cause hepatitis
B) more resistant to chlorination than
pathogenic bacteria
C) pathogens which cause typhoid
D) less resistant to chlorination than
pathogenic bacteria
The typical air-to-solids ratio for a A
dissolved air floatation unit is __________.
a. 0.02 to 0.04 kg/kg (0.02 to 0.04 lb/lb)
b. 10 to 40 kg/kg (10 to 40 lb/lb)
c. 0.2 to 0.4 kg/kg (0.2 to 0.4 lb/lb)
d. 1 to 5 kg/kg (1 to 5 lb/lb)
ORP stands for __________. D
a. Oxygen Recirculation Pump
b. Oxygen Reclamation Process
c. Oxygen Residual Probe
d. Oxidation-Reduction Potential
https://quizlet.com/1205793880/wastewater-class-2-ohio-abc-part-2-exam-already-verified-test-questions-answers-well-elaborated-100-verified-soluti… 2/45
,9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
A confined space atmosphere contains C
a combustible gas. At what percentage
of the Lower Explosive Limit (LEL) for
that gas is the atmosphere considered
"hazardous"?
19.5%
10%
15%
1%
When using an evaporator in D
disinfection, the chlorine-pressure-
reducing valve should be located
_________________.
next to the evaporator
inside the evaporator
upstream of the evaporator
downstream of the evaporator
The vapor density of a hazardous gas D
present in a confined space is 1.15.
Where is this gas likely to be found?
at this density, the gas will dissipate
immediately
near the ceiling
equally distributed throughout the
space
near the floor
A pH drop in an aerobic digester can C
be caused by ______________.
organic underloading
hydraulic overloading
nitrification or CO2 buildup
clogging of diffusers
https://quizlet.com/1205793880/wastewater-class-2-ohio-abc-part-2-exam-already-verified-test-questions-answers-well-elaborated-100-verified-soluti… 3/45
, 9/8/26, 10:06 AM Wastewater Class 2 Ohio ABC part 2 EXAM Already Verified Test | Questions & Answers, Well Elaborated | 100% Verified solutions …
A "dewatering beach is a component B
of a(n) ________.
anaerobic digester
centrifuge
belt filter press
aeration basin
Potassium permanganate is used for D
_______________.
stabilization
disinfection
coagulation
odor control
If a good floc forms before contacting D
a gravity belt thickener but the slurry
exiting the belt is very wet, the most
likely cause is _________________.
the rollers are not parallel
the belt tension is too tight
all of the above
the belt is dirty and clogged
Mean cell residence time (MCRT) is A
mathematically described as the mass
of solids (lb or kg) in a process
_____________________.
divided by the mass of solids leaving
the process (lb/d or kg/d)
multiplied by the amount of solids
entering the system (lb/d or kg/d)
divided by the concentration of solids
in the system (mg/L)
multiplied by the concentration of
solids in the system (mg/L or ppm)
https://quizlet.com/1205793880/wastewater-class-2-ohio-abc-part-2-exam-already-verified-test-questions-answers-well-elaborated-100-verified-soluti… 4/45
