Large bubble diffusers require significantly ________ than fine bubble diffusers
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Less maintenance and cleaning
Nitrate is sometimes added to the collection system to:
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Control odors
Denitrification is likely to occur in the secondary clarifier blanket when
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It is the middle of the day
A 1 ton chlorine container has this many fusible plugs
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6 plugs
Sludge age is held constant if the influent BOD concentration increases. the MLSS
concentration will:
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Increases proportionally to the load
The purpose of the aeration system is to
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Mix the digester contents, prevent solids from settling, & provide oxygen to
microorganisms
Maintaining a constant MLSS concentration as a process control strategy
approximates constant SRT when:
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influent BOD and TSS loads are nearly constant
According to the state of TN water quality standards the effluent flow from a WWTP
shall not change the pH of a receiving stream more than
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1 unit per 24 hours
Algae obtain for growth and reproduction from
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Dissolved carbon dioxide
What is accomplished by an aerated grit chamber?
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Grit is removed
Grit is washed
Wastewater is freshened
, Microorganisms in the biofilm excrete ______ to help convert particulate BOD into
soluble BOD
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Enzymes
Which is not corrosive?
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Carbon monoxide
The fire extinguisher is safe for combustible metals like magnesium and titanium:
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Class D
The substance secreted by bacteria helps the biofilm attached to the supporting
media
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Exopolymer
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Less maintenance and cleaning
Nitrate is sometimes added to the collection system to:
Give this one a try later!
Control odors
Denitrification is likely to occur in the secondary clarifier blanket when
,Give this one a try later!
It is the middle of the day
A 1 ton chlorine container has this many fusible plugs
Give this one a try later!
6 plugs
Sludge age is held constant if the influent BOD concentration increases. the MLSS
concentration will:
Give this one a try later!
Increases proportionally to the load
The purpose of the aeration system is to
Give this one a try later!
Mix the digester contents, prevent solids from settling, & provide oxygen to
microorganisms
Maintaining a constant MLSS concentration as a process control strategy
approximates constant SRT when:
,Give this one a try later!
influent BOD and TSS loads are nearly constant
According to the state of TN water quality standards the effluent flow from a WWTP
shall not change the pH of a receiving stream more than
Give this one a try later!
1 unit per 24 hours
Algae obtain for growth and reproduction from
Give this one a try later!
Dissolved carbon dioxide
What is accomplished by an aerated grit chamber?
Give this one a try later!
Grit is removed
Grit is washed
Wastewater is freshened
, Microorganisms in the biofilm excrete ______ to help convert particulate BOD into
soluble BOD
Give this one a try later!
Enzymes
Which is not corrosive?
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Carbon monoxide
The fire extinguisher is safe for combustible metals like magnesium and titanium:
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Class D
The substance secreted by bacteria helps the biofilm attached to the supporting
media
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Exopolymer
