Using only a single aliquot from a bacteriological sample, the probability of
accurately estimating the coliform density is
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Low - because of the distribution of bacteria in the sample
Which of the following would not be considered preliminary treatment?:
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Denitrification
,What are the chemicals called that are released by microorganisms in the
biological treatment process that break down adsorbed food particles?.
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enzymes
An anaerobic digester with a normal operating temperature of 95˚F
would be considered:
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Mesophilic
Why are the horizontal pipes holding air diffusers at the same elevation in an
aeration tank?
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For an even air release into the reactor
The most commonly known disinfection byproducts found in water/
wastewater treatment are:
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, Trihalomethanes
This type of pump, commonly used to pump sludges, consists of a
screw-shaped rotor which rotates within a rubber-lined stator:
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Progressive Cavity
What is the purpose of a vacuum relief valve on your anaerobic digester?
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To add air to the digester
This type of positive displacement pump consists of a piston that
moves back and forth:
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Reciprocating
The breakdown of wastes by microorganisms in the presence of
dissolved oxygen is called:
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Aerobic Digestion
To prevent violent reactions from occurring:
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Never pour water into an acid
What is the vertical distance between the elevation of the free water surface at the
suction and that of the free water surface at the discharge of a pump called?
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Static head.
Waste discharge requirements issued on a mass basis
depend on pollutant __________________.
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Concentration and flow rate.
Which of the following parameters is not considered when operating a
disinfection system using ultraviolet light?:
accurately estimating the coliform density is
Give this one a try later!
Low - because of the distribution of bacteria in the sample
Which of the following would not be considered preliminary treatment?:
Give this one a try later!
Denitrification
,What are the chemicals called that are released by microorganisms in the
biological treatment process that break down adsorbed food particles?.
Give this one a try later!
enzymes
An anaerobic digester with a normal operating temperature of 95˚F
would be considered:
Give this one a try later!
Mesophilic
Why are the horizontal pipes holding air diffusers at the same elevation in an
aeration tank?
Give this one a try later!
For an even air release into the reactor
The most commonly known disinfection byproducts found in water/
wastewater treatment are:
Give this one a try later!
, Trihalomethanes
This type of pump, commonly used to pump sludges, consists of a
screw-shaped rotor which rotates within a rubber-lined stator:
Give this one a try later!
Progressive Cavity
What is the purpose of a vacuum relief valve on your anaerobic digester?
Give this one a try later!
To add air to the digester
This type of positive displacement pump consists of a piston that
moves back and forth:
Give this one a try later!
Reciprocating
The breakdown of wastes by microorganisms in the presence of
dissolved oxygen is called:
, Give this one a try later!
Aerobic Digestion
To prevent violent reactions from occurring:
Give this one a try later!
Never pour water into an acid
What is the vertical distance between the elevation of the free water surface at the
suction and that of the free water surface at the discharge of a pump called?
Give this one a try later!
Static head.
Waste discharge requirements issued on a mass basis
depend on pollutant __________________.
Give this one a try later!
Concentration and flow rate.
Which of the following parameters is not considered when operating a
disinfection system using ultraviolet light?:
