The rakes in a primary clarifier jerk, skips or hangs, what should be done?
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Drain clarifier and determine the source of the problem.
What are the preservation and hold times for BOD samples?
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48 hours at < or = to 6 degrees C.
Where should the air relief valve be located in a forced main in the collections
system?
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At the highest elevation in the line.
Define endogenous respiration.
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A situation where living organisms oxidize some of their own cellular mass
instead of new organic matter they absorb or absorb from their
environment.
What are three physical factors that determine facultative pond efficiency?
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Temperature, short-circuiting, depth.
How is the flow of the chlorine controlled from the chlorinator?
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With a rotometer.
What is the purpose of the "air relief valve" on an anaerobic digester?
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Pressure relief valve or vacuum relief valve.
The conversion of ammonia to nitrate is called what?
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Nitrification.
How long must sludge records be maintained?
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5 years.
How does an operator control the suspended solids in an activated sludge basin?
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By wasting and returning activated sludge.
What is the incubation time and temperature of a 5 day BOD?
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Give this one a try later!
Drain clarifier and determine the source of the problem.
What are the preservation and hold times for BOD samples?
Give this one a try later!
48 hours at < or = to 6 degrees C.
Where should the air relief valve be located in a forced main in the collections
system?
,Give this one a try later!
At the highest elevation in the line.
Define endogenous respiration.
Give this one a try later!
A situation where living organisms oxidize some of their own cellular mass
instead of new organic matter they absorb or absorb from their
environment.
What are three physical factors that determine facultative pond efficiency?
Give this one a try later!
Temperature, short-circuiting, depth.
How is the flow of the chlorine controlled from the chlorinator?
Give this one a try later!
With a rotometer.
What is the purpose of the "air relief valve" on an anaerobic digester?
, Give this one a try later!
Pressure relief valve or vacuum relief valve.
The conversion of ammonia to nitrate is called what?
Give this one a try later!
Nitrification.
How long must sludge records be maintained?
Give this one a try later!
5 years.
How does an operator control the suspended solids in an activated sludge basin?
Give this one a try later!
By wasting and returning activated sludge.
What is the incubation time and temperature of a 5 day BOD?
Give this one a try later!
