CH. 7 - ROTATING BIOLOGICAL CONTACTORS QUESTIONS
WITH DETAILED VERIFIED AND 100% ACCURATE
ANSWERS
Rotating biological contactors (RBCs) are a primary biological treatment
process for domestic and biodegradable industrial wastes.
True False Correct Answers False
Organisms on the first-stage media of a rotating biological contactor
(RBC) are exposed to high levels of BOD and reduce the BOD at a high
rate.
True False Correct Answers True
Usually, rotating biological contactor (RBC) units are shut down during
low-flow conditions because power consumption is minimal and as the
flows decrease, the percent of BOD removal increases.
True False Correct Answers False
Rotating biological contactors are less sensitive to industrial wastes than
trickling filters.
True False Correct Answers False
If the wastewater flow is perpendicular to the rotating media shaft of a
rotating biological contactor, the media should be moving through the
wastewater in the direction of flow.
True False Correct Answers False
, If the optimum range of influent pH to a rotating biological contactor
(RBC) plant is exceeded at any time (due to industrial waste discharges,
for example), an increase in treatment efficiency is likely.
True False Correct Answers False
One advantage of rotating biological contactor (RBC) units is the fact
that high flows usually wash the slime growths off the media.
True False Correct Answers False
A loss in rotating biological contactor process efficiency can result if the
slimes are washed off the media.
True False Correct Answers True
Always shut off the power to a rotating biological contactor unit, tag the
switch, and lock the main breaker in the OFF position before working on
the unit.
True False Correct Answers True
Good personal hygiene must be practiced by operators at all times.
True False Correct Answers True
What is a biodegradable waste?
Select only one:
1 Inorganic matter that can be broken down by bacteria to more stable
forms that will not create a nuisance or give off foul odors
WITH DETAILED VERIFIED AND 100% ACCURATE
ANSWERS
Rotating biological contactors (RBCs) are a primary biological treatment
process for domestic and biodegradable industrial wastes.
True False Correct Answers False
Organisms on the first-stage media of a rotating biological contactor
(RBC) are exposed to high levels of BOD and reduce the BOD at a high
rate.
True False Correct Answers True
Usually, rotating biological contactor (RBC) units are shut down during
low-flow conditions because power consumption is minimal and as the
flows decrease, the percent of BOD removal increases.
True False Correct Answers False
Rotating biological contactors are less sensitive to industrial wastes than
trickling filters.
True False Correct Answers False
If the wastewater flow is perpendicular to the rotating media shaft of a
rotating biological contactor, the media should be moving through the
wastewater in the direction of flow.
True False Correct Answers False
, If the optimum range of influent pH to a rotating biological contactor
(RBC) plant is exceeded at any time (due to industrial waste discharges,
for example), an increase in treatment efficiency is likely.
True False Correct Answers False
One advantage of rotating biological contactor (RBC) units is the fact
that high flows usually wash the slime growths off the media.
True False Correct Answers False
A loss in rotating biological contactor process efficiency can result if the
slimes are washed off the media.
True False Correct Answers True
Always shut off the power to a rotating biological contactor unit, tag the
switch, and lock the main breaker in the OFF position before working on
the unit.
True False Correct Answers True
Good personal hygiene must be practiced by operators at all times.
True False Correct Answers True
What is a biodegradable waste?
Select only one:
1 Inorganic matter that can be broken down by bacteria to more stable
forms that will not create a nuisance or give off foul odors
