how do you safely mix acid and water?
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acid into the water
what is the preferred method of wasting activated sludge?
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slowly, continuously
in what process is the 'solids to air' ratio used?
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dissolved air flotation thickening
what type of fire extinguisher would you use for an oil and electrical fire?
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dry chemical
In a new activated sludge plant, billows of white sudsy foam appear on the aeration
tank. What process control step should the operator take?
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decrease WAS
when starting a blower, when should the fan be engaged?
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after the blower reaches normal operating speed
What would be the cause of leaking around the seals and the plunger on a plunger
pump?
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discharge pressure too high
which of the following components of wastewater has the highest chlorine demand?
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ammonia
what type of pump is a 'progressive cavity' pump?
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rotating positive displacement
what effect would an overloading of BOD have on the biological growth in the
aeration tank?
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the oxygen uptake would increase
If an operating three phase motor is driving a pump and one phase is lost, what will
happen?
Give this one a try later!
acid into the water
what is the preferred method of wasting activated sludge?
Give this one a try later!
slowly, continuously
in what process is the 'solids to air' ratio used?
,Give this one a try later!
dissolved air flotation thickening
what type of fire extinguisher would you use for an oil and electrical fire?
Give this one a try later!
dry chemical
In a new activated sludge plant, billows of white sudsy foam appear on the aeration
tank. What process control step should the operator take?
Give this one a try later!
decrease WAS
when starting a blower, when should the fan be engaged?
Give this one a try later!
after the blower reaches normal operating speed
What would be the cause of leaking around the seals and the plunger on a plunger
pump?
, Give this one a try later!
discharge pressure too high
which of the following components of wastewater has the highest chlorine demand?
Give this one a try later!
ammonia
what type of pump is a 'progressive cavity' pump?
Give this one a try later!
rotating positive displacement
what effect would an overloading of BOD have on the biological growth in the
aeration tank?
Give this one a try later!
the oxygen uptake would increase
If an operating three phase motor is driving a pump and one phase is lost, what will
happen?
