FLORIDA WASTEWATER STUDY GUIDE 2025/2026
QUESTIONS WITH ANSWERS RATED A+
✔✔If a sand drying bed has a problem with the media becoming clogged what should
the operator first do? - ✔✔Rake the surface of the bed, removing the upper 2 to 3
inches of sand and replace the sand with fresh sand
✔✔What should be the pH in a rapid mix basin for maximum phosphorus, removal
deficiency when using lime? - ✔✔11.0
✔✔Chapter 62-601, FAC, domestic wastewater treatment plant monitoring: after July 1,
1993 the tests for on-site parameters pH and chlorine residual shall be performed by or
under the direction of. - ✔✔A certified laboratory or a certified operator
✔✔What is the most common method of effluent disposal? - ✔✔Into receiving waters
✔✔What would be the usual approach to measure the impact of a discharge to
receiving waters - ✔✔Take a measurement in the upstream unaffected area, and
compare to a downstream affected area
✔✔Which does not represent a potential hazard of working in a wastewater treatment
laboratory - ✔✔Hypothermia
✔✔An instrument used in a laboratory that measures the intensity of color or a
particular wavelength is a? - ✔✔Spectrophotometer
✔✔A gravity filter experiences rapid buildup of head loss. what could be a probable
cause? - ✔✔Incomplete backwash cycle
✔✔What problems may develop during the injection of reclaimed waste water into deep
wells? - ✔✔Contamination of groundwater
✔✔According to state regulations, a wastewater plant shall maintain a pH in the effluent
after disinfection within what range? - ✔✔6.0-8.5
✔✔FL Chapter 62-699, FAC treatment plant classification and staffing: wastewater
treatment plants are classified in order to prescribe the lowest class of certified
operators who will be permitted to operate the treatment plan. This classification system
is based on what (2) factors? - ✔✔Design flow and treatment type
✔✔Two inorganic gases giving off the most offensive odors and is a main concern of
operators when controlling odors are? - ✔✔Hydrogen sulfide and ammonia
, ✔✔The recovery of a stuck anaerobic digester can be accelerated by neutralizing the
acids with a caustic material like? - ✔✔Lime
✔✔When operating an advanced treatment facility using chemical treatment for solids
removal, you discover high flows entering the system. The first step you should take is
to? - ✔✔Prepared jar tests to determine a dosage that will be good for a decreased
attention time
✔✔Even though a process control test is accurately performed, which one of the
following could result in meaningless findings - ✔✔The sample not being representative
of the process stream being sampled
✔✔Which process subjects waste water sludges to extreme heat at elevated pressures
to encourage the release of bound water? - ✔✔Thermal conditioning
✔✔When nitrification increases in an activated sludge system, what other changes
would be expected - ✔✔F/M: decrease
MCRT: increase
MLSS: increase
✔✔By increasing the sludge feeding rate to your anaerobic digester, you decrease the
detention time and? - ✔✔Increase the rate at which alkalinity is depleted
✔✔What is gasification of a gravity thickener primarily caused by? - ✔✔Anaerobic
sludge
✔✔A fixed sample is one: - ✔✔That contains a preservative
✔✔Before using the tubing in a lab, the ends of the glass should be? - ✔✔Flame
polished
✔✔Evapotranspiration is? - ✔✔Water removed from an area by plants and evaporation
✔✔In anaerobic digestion, what does a pH decrease indicate? - ✔✔Methane producers
are reacting too slowly
✔✔A plant treating 5.0 MGD of domestic wastewater has primary settling, aeration
tanks, final settling, aerobic digestion, and chlorine contact chambers.
Which groups of test are most important to ensure proper operation and compliance
with existing rules? - ✔✔CBOD
CL2
D.O.
QUESTIONS WITH ANSWERS RATED A+
✔✔If a sand drying bed has a problem with the media becoming clogged what should
the operator first do? - ✔✔Rake the surface of the bed, removing the upper 2 to 3
inches of sand and replace the sand with fresh sand
✔✔What should be the pH in a rapid mix basin for maximum phosphorus, removal
deficiency when using lime? - ✔✔11.0
✔✔Chapter 62-601, FAC, domestic wastewater treatment plant monitoring: after July 1,
1993 the tests for on-site parameters pH and chlorine residual shall be performed by or
under the direction of. - ✔✔A certified laboratory or a certified operator
✔✔What is the most common method of effluent disposal? - ✔✔Into receiving waters
✔✔What would be the usual approach to measure the impact of a discharge to
receiving waters - ✔✔Take a measurement in the upstream unaffected area, and
compare to a downstream affected area
✔✔Which does not represent a potential hazard of working in a wastewater treatment
laboratory - ✔✔Hypothermia
✔✔An instrument used in a laboratory that measures the intensity of color or a
particular wavelength is a? - ✔✔Spectrophotometer
✔✔A gravity filter experiences rapid buildup of head loss. what could be a probable
cause? - ✔✔Incomplete backwash cycle
✔✔What problems may develop during the injection of reclaimed waste water into deep
wells? - ✔✔Contamination of groundwater
✔✔According to state regulations, a wastewater plant shall maintain a pH in the effluent
after disinfection within what range? - ✔✔6.0-8.5
✔✔FL Chapter 62-699, FAC treatment plant classification and staffing: wastewater
treatment plants are classified in order to prescribe the lowest class of certified
operators who will be permitted to operate the treatment plan. This classification system
is based on what (2) factors? - ✔✔Design flow and treatment type
✔✔Two inorganic gases giving off the most offensive odors and is a main concern of
operators when controlling odors are? - ✔✔Hydrogen sulfide and ammonia
, ✔✔The recovery of a stuck anaerobic digester can be accelerated by neutralizing the
acids with a caustic material like? - ✔✔Lime
✔✔When operating an advanced treatment facility using chemical treatment for solids
removal, you discover high flows entering the system. The first step you should take is
to? - ✔✔Prepared jar tests to determine a dosage that will be good for a decreased
attention time
✔✔Even though a process control test is accurately performed, which one of the
following could result in meaningless findings - ✔✔The sample not being representative
of the process stream being sampled
✔✔Which process subjects waste water sludges to extreme heat at elevated pressures
to encourage the release of bound water? - ✔✔Thermal conditioning
✔✔When nitrification increases in an activated sludge system, what other changes
would be expected - ✔✔F/M: decrease
MCRT: increase
MLSS: increase
✔✔By increasing the sludge feeding rate to your anaerobic digester, you decrease the
detention time and? - ✔✔Increase the rate at which alkalinity is depleted
✔✔What is gasification of a gravity thickener primarily caused by? - ✔✔Anaerobic
sludge
✔✔A fixed sample is one: - ✔✔That contains a preservative
✔✔Before using the tubing in a lab, the ends of the glass should be? - ✔✔Flame
polished
✔✔Evapotranspiration is? - ✔✔Water removed from an area by plants and evaporation
✔✔In anaerobic digestion, what does a pH decrease indicate? - ✔✔Methane producers
are reacting too slowly
✔✔A plant treating 5.0 MGD of domestic wastewater has primary settling, aeration
tanks, final settling, aerobic digestion, and chlorine contact chambers.
Which groups of test are most important to ensure proper operation and compliance
with existing rules? - ✔✔CBOD
CL2
D.O.
