Which of the following parameters should be monitored several times a week in a
pond?
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dissolved oxygen, temperature, and pH
What type of treatment is primarily used to thicken sludge instead of dewater the
sludge?
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DAF Dissolved Air Flotation
,Which of the following best describes pre-chlorination?
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addition of chlorine to wastewater at the entrance to the plant used for
odor control, BOD reduction, grease removal, and aid sedimentation
Prior to entering a permit-required confined space, what should you verify?
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a standby person should be located outside the entrance to the confined
space, while another person should be within sight or call of the standby
person
Which of the following is one of the basic rules of lab work?
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never pipet hazardous material with your mouth, even if the pipet has been
sterialized
What is a common way to determine the organic strength of wastes in the influent?
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, test for the biochemical oxygen demand
What type of microorganism can use nitrate as a source of oxygen?
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facultative bacteria
Which of the following is true about a positive displacement pump?
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it must never be started with the discharge valve closed
A pond with a detention time of less than three days will perform similar to?
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sedimentation tank
If the lab results show that the plant influent sample has COD of 100 mg/l and a BOD
of 300 mg/l, which of the following is most likey true?
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pond?
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dissolved oxygen, temperature, and pH
What type of treatment is primarily used to thicken sludge instead of dewater the
sludge?
Give this one a try later!
DAF Dissolved Air Flotation
,Which of the following best describes pre-chlorination?
Give this one a try later!
addition of chlorine to wastewater at the entrance to the plant used for
odor control, BOD reduction, grease removal, and aid sedimentation
Prior to entering a permit-required confined space, what should you verify?
Give this one a try later!
a standby person should be located outside the entrance to the confined
space, while another person should be within sight or call of the standby
person
Which of the following is one of the basic rules of lab work?
Give this one a try later!
never pipet hazardous material with your mouth, even if the pipet has been
sterialized
What is a common way to determine the organic strength of wastes in the influent?
Give this one a try later!
, test for the biochemical oxygen demand
What type of microorganism can use nitrate as a source of oxygen?
Give this one a try later!
facultative bacteria
Which of the following is true about a positive displacement pump?
Give this one a try later!
it must never be started with the discharge valve closed
A pond with a detention time of less than three days will perform similar to?
Give this one a try later!
sedimentation tank
If the lab results show that the plant influent sample has COD of 100 mg/l and a BOD
of 300 mg/l, which of the following is most likey true?
Give this one a try later!
