FLORIDA WASTEWATER PRACTICE
BOARD REVIEW SET 2026 CORRECT
ANSWERS GRADED A+
⩥ 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
Eff tss: 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
BOARD REVIEW SET 2026 CORRECT
ANSWERS GRADED A+
⩥ 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
Eff tss: 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
