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Wastewaster Treatment Grade 1 Certification
Study Guide Questions and Answers (100%
Correct Answers) Already Graded A+
Fatal after a few breaths [ Ans: ] Concentrations of
chlorine gas in excess of 1,000 ppm are...
Volume of the basin [ Ans: ] Routine weir maintenance
should include checking the...
Yellow-green, toxic and heavier than air [ Ans: ] Correct
set of characteristics of chlorine gas...
Mechanical seal [ Ans: ] Under normal operating
conditions, which of the following seal types has the
longest life cycle?
Date, time and location of the sample collection [ Ans: ]
Which of the following should always be included on a
sample label?
Hydrogen sulfide [ Ans: ] Which of the following gases has
a rotten egg odor?
Increase the return sludge rate [ Ans: ] When operating a
package aeration plant, an operator notices that the
secondary clarifier sludge blanket is higher than normal
and the effluent appears turbid. The operator should...
, 2
Cavitation [ Ans: ] Which of the following is associated
with low internal pressures or excessively high flow rates
that are structurally detrimental to centrifugal pumps?
Wastewater containing high organic load [ Ans: ] A sample
of raw wastewater has a carbonaceous biochemical oxygen
demand (CBOD) concentration of 450 ppm. This most
likely indicates...
15 hr [ Ans: ] In a small town, wastewater is pumped from
a lift station with a pump having a capacity of 200 gpm
(757 Lpm). The station receives 180,000 gal (681,300L) of
water during an average day. How many hours of run time
will this pump have per day?
Water [ Ans: ] Chlorine is very corrosive when combined
with...
Parshall flume [ Ans: ] The most commonly used device to
measure large wastewater flow is a...
Add acid to the water first [ Ans: ] What is the proper way
to mix water and acid?
A weir [ Ans: ] The simplest device used to measure flow
in open channels is...
Sodium chloride [ Ans: ] Which of the following chemicals
is beneficial in correcting the problem that causes a
facultative pond to change from a deep bright green to a
dull gray color?
Wastewaster Treatment Grade 1 Certification
Study Guide Questions and Answers (100%
Correct Answers) Already Graded A+
Fatal after a few breaths [ Ans: ] Concentrations of
chlorine gas in excess of 1,000 ppm are...
Volume of the basin [ Ans: ] Routine weir maintenance
should include checking the...
Yellow-green, toxic and heavier than air [ Ans: ] Correct
set of characteristics of chlorine gas...
Mechanical seal [ Ans: ] Under normal operating
conditions, which of the following seal types has the
longest life cycle?
Date, time and location of the sample collection [ Ans: ]
Which of the following should always be included on a
sample label?
Hydrogen sulfide [ Ans: ] Which of the following gases has
a rotten egg odor?
Increase the return sludge rate [ Ans: ] When operating a
package aeration plant, an operator notices that the
secondary clarifier sludge blanket is higher than normal
and the effluent appears turbid. The operator should...
, 2
Cavitation [ Ans: ] Which of the following is associated
with low internal pressures or excessively high flow rates
that are structurally detrimental to centrifugal pumps?
Wastewater containing high organic load [ Ans: ] A sample
of raw wastewater has a carbonaceous biochemical oxygen
demand (CBOD) concentration of 450 ppm. This most
likely indicates...
15 hr [ Ans: ] In a small town, wastewater is pumped from
a lift station with a pump having a capacity of 200 gpm
(757 Lpm). The station receives 180,000 gal (681,300L) of
water during an average day. How many hours of run time
will this pump have per day?
Water [ Ans: ] Chlorine is very corrosive when combined
with...
Parshall flume [ Ans: ] The most commonly used device to
measure large wastewater flow is a...
Add acid to the water first [ Ans: ] What is the proper way
to mix water and acid?
A weir [ Ans: ] The simplest device used to measure flow
in open channels is...
Sodium chloride [ Ans: ] Which of the following chemicals
is beneficial in correcting the problem that causes a
facultative pond to change from a deep bright green to a
dull gray color?
