#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
the name of the state agency responsible for texas commission on environmental quality
enforcing pollution control laws in texas is-
The term pathogenic means: capable of causing disease
the minimum separation between sewer lines and 9 feet
potable water lines is
a licensed wastewater operator is a professional who consistently does the best job possible, practices personal safety, strives to
improve job knowledge, strives to keep the plant and collection system in the
best appearance and working order
an important step in testing a sample for total filtering the sample
suspended solids (tss) is
the Biochemical Oxygen Demand (BOD) of a sample is measuring the dissolved oxygen (DO) used
based on
the result of a biochemical oxygen demand (BOD) how the plant was operating 5 days ago
sample taken at a treatment plant tells the operator
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
which of the following are dangerous gases that are natural gas and gasoline fumes, hydrogen sulfide and carbon dioxide
likely to be present in lift stations and or manholes
a preferred hydraulic method of cleaning sewer lines hydro jet cleaner
is
which of the following are ways to reduce bad odors routinely cleaning slow running or low flow lines, and adding chlorine or
coming from a collection system hydrogen peroxide to the collection system
which of the following types of pipe are commonly vitrified clay and poly vinyl chloride (PVC)
used in a wastewater collection system
before entering a confined space a worker should use approved monitoring device and check for the presence of dangerous
gases. ventilate the space with a blower. wear a safety harness and attach a
life line
a properly designed and operated primary 30 to 40%
sedimentation tank should remove _____________ percent
of incoming BOD.
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
which device may be used to determine the level of air bubbler tube
sewage in a lift station
what is the most important role of aerobic bacteria in decompose organic matter
the treatment of wastewater
the hydraulic loading of a trickling filter may be flow rate and filter area
determined by
which of the following is typically used to dewater belt press, drying beds, solid bowl centrifuge, gravity thickener
sludge
which of the following are the most important to sunlight, algae, bacteria, and time
providing adequate sewage treatment in a stabilization
pond
offensive and objectionable odors which sometimes septic conditions are present
occur in trickling filters usually indicate that
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
Dissolved Oxygen (DO) in the aeration tank of an 2 to 4 mg/l
activated sludge plant should be maintained at or
about
which of the following would contribute to infiltration breaks in the main lines, high ground water levels, heavy rains
in a collection system
when a centrifugal pump loses prime, which of the pump is no longer moving liquid
following is most likely to result
Rotating Biological Contactor (RBC) is a fixed film biological treatment process
which of the following need to be checked regularly aeration equipment and mixed liquor solids
to properly operate an activated sludge treatment
plant
an aeration basin holds 5000 gallons of mixed liquor, 25 hours
the MLSS is 4000 mg/l and the inflow is 200 gallons
per hour. calculate the detention time of the aeration
tank in hours
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
the name of the state agency responsible for texas commission on environmental quality
enforcing pollution control laws in texas is-
The term pathogenic means: capable of causing disease
the minimum separation between sewer lines and 9 feet
potable water lines is
a licensed wastewater operator is a professional who consistently does the best job possible, practices personal safety, strives to
improve job knowledge, strives to keep the plant and collection system in the
best appearance and working order
an important step in testing a sample for total filtering the sample
suspended solids (tss) is
the Biochemical Oxygen Demand (BOD) of a sample is measuring the dissolved oxygen (DO) used
based on
the result of a biochemical oxygen demand (BOD) how the plant was operating 5 days ago
sample taken at a treatment plant tells the operator
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
which of the following are dangerous gases that are natural gas and gasoline fumes, hydrogen sulfide and carbon dioxide
likely to be present in lift stations and or manholes
a preferred hydraulic method of cleaning sewer lines hydro jet cleaner
is
which of the following are ways to reduce bad odors routinely cleaning slow running or low flow lines, and adding chlorine or
coming from a collection system hydrogen peroxide to the collection system
which of the following types of pipe are commonly vitrified clay and poly vinyl chloride (PVC)
used in a wastewater collection system
before entering a confined space a worker should use approved monitoring device and check for the presence of dangerous
gases. ventilate the space with a blower. wear a safety harness and attach a
life line
a properly designed and operated primary 30 to 40%
sedimentation tank should remove _____________ percent
of incoming BOD.
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
which device may be used to determine the level of air bubbler tube
sewage in a lift station
what is the most important role of aerobic bacteria in decompose organic matter
the treatment of wastewater
the hydraulic loading of a trickling filter may be flow rate and filter area
determined by
which of the following is typically used to dewater belt press, drying beds, solid bowl centrifuge, gravity thickener
sludge
which of the following are the most important to sunlight, algae, bacteria, and time
providing adequate sewage treatment in a stabilization
pond
offensive and objectionable odors which sometimes septic conditions are present
occur in trickling filters usually indicate that
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
,#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
Dissolved Oxygen (DO) in the aeration tank of an 2 to 4 mg/l
activated sludge plant should be maintained at or
about
which of the following would contribute to infiltration breaks in the main lines, high ground water levels, heavy rains
in a collection system
when a centrifugal pump loses prime, which of the pump is no longer moving liquid
following is most likely to result
Rotating Biological Contactor (RBC) is a fixed film biological treatment process
which of the following need to be checked regularly aeration equipment and mixed liquor solids
to properly operate an activated sludge treatment
plant
an aeration basin holds 5000 gallons of mixed liquor, 25 hours
the MLSS is 4000 mg/l and the inflow is 200 gallons
per hour. calculate the detention time of the aeration
tank in hours
#############@@wastewater
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
wastewater operatorwastewater
operatorwastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@wastewater
operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&############################@@@@@@@@@@@@@@@@22/2026//2027
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&&&&&&&##################
operatorwastewater operator!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!~~~~
