WASTE WATER OPERATOR CERTIFICATION GRADE 1
COMPLETE QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
Question 1: Which one of the following nuisance organisms is
controller simply by the water surface being disturbed by wind or
currents?
Answer:
mosquitoes
Question 2: When is the Dissolved Oxygen in a waste pond the
lowest?
Answer:
sunrise
Question 3: What would be the most likely solution in the influent
to a wastewater treatment plant has an H2S order?
Answer:
add treatment chemicals
Question 4: That is the main reason why wastewater treatment
plants remove phosphorous from their effluent before discharging
to a lake or river?
Answer:
the reduce the growth of algae
Question 5: What is the color of liquid chlorine?
Answer:
, amber...
Question 6: How many times heavier than air is chlorine gas?
Answer:
2.5 times
Question 7: Free available chlorine consists of
Answer:
dissolved chlorine gas, hypochlorous acid, and hypochlorite ion
Question 8: The fusible plug on a chlorine cylinder will start to melt
at approximately?
Answer:
160 degree F
Question 9: This solids retention treatment method usually has 20
days of retention time:
Answer:
aerobic digestion
Question 10: The solids treatment methods processes solids in a
sealed unit:
Answer:
anaerobic digestion
Question 11: The solids treatment method produces methane gas
that can be used in other plant processes:
Answer:
, anaerobic digestion
Question 12: This solids treatment method cures the final product
and then it may be applied to farmlands
Answer:
composting
Question 13: The solids treatment method uses evaporation but
also requires a great deal of labor.
Answer:
sand drying beds
Question 14: The solids treatment method uses a partially
submerged rotating drum
Answer:
vacuum filter
Question 15: These solid treatment methods use a coagulant
polymer and pressure
Answer:
belt filter and plate
Question 16: Sampling, testing & reporting Tests such as pH,
temperature and dissolved oxygen should always be performed
within____after collection
Answer:
15 min
COMPLETE QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
Question 1: Which one of the following nuisance organisms is
controller simply by the water surface being disturbed by wind or
currents?
Answer:
mosquitoes
Question 2: When is the Dissolved Oxygen in a waste pond the
lowest?
Answer:
sunrise
Question 3: What would be the most likely solution in the influent
to a wastewater treatment plant has an H2S order?
Answer:
add treatment chemicals
Question 4: That is the main reason why wastewater treatment
plants remove phosphorous from their effluent before discharging
to a lake or river?
Answer:
the reduce the growth of algae
Question 5: What is the color of liquid chlorine?
Answer:
, amber...
Question 6: How many times heavier than air is chlorine gas?
Answer:
2.5 times
Question 7: Free available chlorine consists of
Answer:
dissolved chlorine gas, hypochlorous acid, and hypochlorite ion
Question 8: The fusible plug on a chlorine cylinder will start to melt
at approximately?
Answer:
160 degree F
Question 9: This solids retention treatment method usually has 20
days of retention time:
Answer:
aerobic digestion
Question 10: The solids treatment methods processes solids in a
sealed unit:
Answer:
anaerobic digestion
Question 11: The solids treatment method produces methane gas
that can be used in other plant processes:
Answer:
, anaerobic digestion
Question 12: This solids treatment method cures the final product
and then it may be applied to farmlands
Answer:
composting
Question 13: The solids treatment method uses evaporation but
also requires a great deal of labor.
Answer:
sand drying beds
Question 14: The solids treatment method uses a partially
submerged rotating drum
Answer:
vacuum filter
Question 15: These solid treatment methods use a coagulant
polymer and pressure
Answer:
belt filter and plate
Question 16: Sampling, testing & reporting Tests such as pH,
temperature and dissolved oxygen should always be performed
within____after collection
Answer:
15 min
