FLORIDA WASTEWATER OPERATOR
FLORIDA WASTEWATER OPERATOR CLASS B CERTIFICATION EXAM QUESTIONS
WITH SOLVED SOLUTIONS.
A common remedy for activated sludge system problems is to increase the waste
activated sludge flow rate, when would an increase of WAS rate not be correct?
answer >>>>> When straggler Floc is present in clarifier and settle meter
The chlorine residual is falling an inspection of the 150lb cylinder and chlorine
feed equipment shows ice forming on the chlorine regulator and feed lines. The
best method to fix the falling chlorine residual is? answer >>>>> Put another
chlorine cylinder online
Caution must be used when adding caustic chemical to a digester.
Lime can combine with carbon dioxide in the digester to form what problem?
answer >>>>> A dangerous vacuum
How many gallons will the single piston, reciprocating sludge pump discharge per
minute If the piston bore (diameter) is 6 inches and the stroke length is 11 inches?
The pump runs at 99 revolutions per minute. answer >>>>> 134gpm
solve MCRT:
Flow: 3.6mgd
Basin volume: 5.0mg
MLSS:2350mg/l
WAS ss:4800mg/l
WAS flow: 150000gpd
, FLORIDA WASTEWATER OPERATOR
Eff toss: 15mg/l answer >>>>> 15 days
There are high suspended solids in the water applied to the filters due to bulking
sludge in the secondary clarifiers.
Polymer is used as a filter aid chemical, but the effluent ability is worsening.
What is the best method to correct the filter problem? answer >>>>> Run jar
tests to determine best Polymer dosage
An advantage of a continuous backwash, up flow, deep bed sand filters is?
answer >>>>> Filters do not need to be taken out of service for backwashing
The aeration tank dissolved oxygen has been running normal, 1.5 to 2.0 mg/L the
whole month.
Today's D.O. reading has spiked to nearly 6.0 mg/L in the aeration tank and the
clarifier and plant effluent or cloudy.
What is the most likely cause of the rise in D.O.? answer >>>>> A toxic shock load
of cyanide has entered the plant
Plant fecal coliform counts do not meet state standards.
The chlorine supply is not the problem and there is adequate vacuum and
chlorine feed the chlorine contacting has no solids build up and the effluent flow
is below design.
What is the most likely cause of the poor fecal coliform kill? answer >>>>> High
chlorine demand from excessive nitrite in effluent
The point, location or structure where wastewater discharges from a sewer, drain
or other conduit is called what? answer >>>>> Outfall
FLORIDA WASTEWATER OPERATOR CLASS B CERTIFICATION EXAM QUESTIONS
WITH SOLVED SOLUTIONS.
A common remedy for activated sludge system problems is to increase the waste
activated sludge flow rate, when would an increase of WAS rate not be correct?
answer >>>>> When straggler Floc is present in clarifier and settle meter
The chlorine residual is falling an inspection of the 150lb cylinder and chlorine
feed equipment shows ice forming on the chlorine regulator and feed lines. The
best method to fix the falling chlorine residual is? answer >>>>> Put another
chlorine cylinder online
Caution must be used when adding caustic chemical to a digester.
Lime can combine with carbon dioxide in the digester to form what problem?
answer >>>>> A dangerous vacuum
How many gallons will the single piston, reciprocating sludge pump discharge per
minute If the piston bore (diameter) is 6 inches and the stroke length is 11 inches?
The pump runs at 99 revolutions per minute. answer >>>>> 134gpm
solve MCRT:
Flow: 3.6mgd
Basin volume: 5.0mg
MLSS:2350mg/l
WAS ss:4800mg/l
WAS flow: 150000gpd
, FLORIDA WASTEWATER OPERATOR
Eff toss: 15mg/l answer >>>>> 15 days
There are high suspended solids in the water applied to the filters due to bulking
sludge in the secondary clarifiers.
Polymer is used as a filter aid chemical, but the effluent ability is worsening.
What is the best method to correct the filter problem? answer >>>>> Run jar
tests to determine best Polymer dosage
An advantage of a continuous backwash, up flow, deep bed sand filters is?
answer >>>>> Filters do not need to be taken out of service for backwashing
The aeration tank dissolved oxygen has been running normal, 1.5 to 2.0 mg/L the
whole month.
Today's D.O. reading has spiked to nearly 6.0 mg/L in the aeration tank and the
clarifier and plant effluent or cloudy.
What is the most likely cause of the rise in D.O.? answer >>>>> A toxic shock load
of cyanide has entered the plant
Plant fecal coliform counts do not meet state standards.
The chlorine supply is not the problem and there is adequate vacuum and
chlorine feed the chlorine contacting has no solids build up and the effluent flow
is below design.
What is the most likely cause of the poor fecal coliform kill? answer >>>>> High
chlorine demand from excessive nitrite in effluent
The point, location or structure where wastewater discharges from a sewer, drain
or other conduit is called what? answer >>>>> Outfall
