WASTEWATER CLASS B TEXAS EXAMS WITH ALL GRADED A SOLUTIONS
1.The name of the State Agency responsible for enforcing pollution
control laws in Texas: Texas Commission of Environmental Quality
2.The term pathogenic means: Capable of causing disease
3.The minimum separation between sewer lines and potable water lines is:
9 feet
4.A licensed wastewater operator is a professional: consistently does 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
5.An important step in testing a sample for Total Suspended Solids is:
Filtering a sample
6.The Biochemical oxygen Demand (BOD) of a sample is based on:
Measuring the dissolved oxygen (DO) used
7.The results of Biochemical Oxygen Demand (BOD) sample taken at a
treat- ment plant tells the operator: How the plant was operating 5 days
ago
8.Which of the following are dangerous gasses that are likely to be present
in lift stations and manholes?: Natural gas, gasoline fumes, hydrogen
,sulfide and carbon dioxide
9.A preferred hydraulic method of cleaning sewer lines is: Hydro Jet Cleane
10.Ways to reduce bad odors coming from a collection system: routinely
cleaning slow running or low flow lines, adding chlorine or hydrogen
peroxide to the collection system
11.Types of pipe that are commonly used in wastewater collection system: -
ductile iron, Poly Vinyl Chloride (PVC)
12.Before entering a confined space a worker should: Use approved
monitoring device and check for the presence of dangerous gasses,
ventilate the space with a blower, wear a safety harness and attach a
life line
13.A properly designed and operated primary sedimentation tank
should remove percent of incoming BOD: 30-40%
14.Devices that may be used to determine the level of sewage in a lift station
: air bubbler, floats, electrodes, Acoustic (sonic)
15.What is the most important role of aerobic bacteria in the treatment
of wastewater?: decompose organic matter
16.The hydraulic loading of a trickling filter may be determined by: flow
rate and filter area
17.These can be used to dewater sludge: belt press, drying beds, solid
bowl centrifuge, gravity thickener
18.Most important to providing adequate sewage treatment in a
stabilization pond: sunlight, algae, bacteria and time
, 19.Offensive and objectionable odors which sometimes occur in
trickling filters usually indicate: septic conditions are present
20. Dissolved Oxygen (DO) in aeration tank of an activated sludge plant
should be maintained at or about: 2 to 4 mg/L
21. Contributes to the infiltration in a collection system: breaks in the
main lines, high ground water levels, heavy rains, hydro jet cleaning
plugged mains
22.When a centrifuge pump loses prime the: pump is no longer moving
liquid
23.A Rotating Biological Contactor (RBC) is: fixed firm biological
treatment process
24.Needs to be checked regularly to properly operate an activated
sludge treatment plant: aeration equipment and mixed liquor solids
25.Point source discharges are: discharges that come from pipes or
ditches that are monitored, controlled and inspected
26.Non-point discharges are: discharges that have intermittent,
dispersed flows having little or no control
27.The Texas Water Code establishes the protection of water quality and
quantity of the state by: setting stream standards, issues permits for
discharges, identifies non-point source controls, and establishes water
reuse.
28.The wastewater plant operator is primarily responsible for: treating
waste- water discharged into the community
29.Chapter of the Texas Water Code is the state law controlling water
pollution and authority to control discharges in Texas: Chapter 26
and Texas Commission of Environmental Quality
30.The Texas Commission on Environmental Quality can revoke an
operator's license if the operator: causes permit violation, falsifies records
or neglects their duty
31.If accidental discharge, bypass, or spill (SSO) of wastewater occurs
the responsible party MUST notify TCEQ regional offices within__hours:
24
32.Aerobic Bacteria require in the water for their metabolism: oxygen
33.Anaerobic Bacteria live with O2 present in the water for their
metab- olism: cannot
34.Facultative Bacteria require in the water for their metabolism:
either aerobic or anaerobic conditions
35.Chemical characteristics of sewage include: solids, greases, dissolved
oxy- gen, O2 Demand, pH, and gasses
1.The name of the State Agency responsible for enforcing pollution
control laws in Texas: Texas Commission of Environmental Quality
2.The term pathogenic means: Capable of causing disease
3.The minimum separation between sewer lines and potable water lines is:
9 feet
4.A licensed wastewater operator is a professional: consistently does 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
5.An important step in testing a sample for Total Suspended Solids is:
Filtering a sample
6.The Biochemical oxygen Demand (BOD) of a sample is based on:
Measuring the dissolved oxygen (DO) used
7.The results of Biochemical Oxygen Demand (BOD) sample taken at a
treat- ment plant tells the operator: How the plant was operating 5 days
ago
8.Which of the following are dangerous gasses that are likely to be present
in lift stations and manholes?: Natural gas, gasoline fumes, hydrogen
,sulfide and carbon dioxide
9.A preferred hydraulic method of cleaning sewer lines is: Hydro Jet Cleane
10.Ways to reduce bad odors coming from a collection system: routinely
cleaning slow running or low flow lines, adding chlorine or hydrogen
peroxide to the collection system
11.Types of pipe that are commonly used in wastewater collection system: -
ductile iron, Poly Vinyl Chloride (PVC)
12.Before entering a confined space a worker should: Use approved
monitoring device and check for the presence of dangerous gasses,
ventilate the space with a blower, wear a safety harness and attach a
life line
13.A properly designed and operated primary sedimentation tank
should remove percent of incoming BOD: 30-40%
14.Devices that may be used to determine the level of sewage in a lift station
: air bubbler, floats, electrodes, Acoustic (sonic)
15.What is the most important role of aerobic bacteria in the treatment
of wastewater?: decompose organic matter
16.The hydraulic loading of a trickling filter may be determined by: flow
rate and filter area
17.These can be used to dewater sludge: belt press, drying beds, solid
bowl centrifuge, gravity thickener
18.Most important to providing adequate sewage treatment in a
stabilization pond: sunlight, algae, bacteria and time
, 19.Offensive and objectionable odors which sometimes occur in
trickling filters usually indicate: septic conditions are present
20. Dissolved Oxygen (DO) in aeration tank of an activated sludge plant
should be maintained at or about: 2 to 4 mg/L
21. Contributes to the infiltration in a collection system: breaks in the
main lines, high ground water levels, heavy rains, hydro jet cleaning
plugged mains
22.When a centrifuge pump loses prime the: pump is no longer moving
liquid
23.A Rotating Biological Contactor (RBC) is: fixed firm biological
treatment process
24.Needs to be checked regularly to properly operate an activated
sludge treatment plant: aeration equipment and mixed liquor solids
25.Point source discharges are: discharges that come from pipes or
ditches that are monitored, controlled and inspected
26.Non-point discharges are: discharges that have intermittent,
dispersed flows having little or no control
27.The Texas Water Code establishes the protection of water quality and
quantity of the state by: setting stream standards, issues permits for
discharges, identifies non-point source controls, and establishes water
reuse.
28.The wastewater plant operator is primarily responsible for: treating
waste- water discharged into the community
29.Chapter of the Texas Water Code is the state law controlling water
pollution and authority to control discharges in Texas: Chapter 26
and Texas Commission of Environmental Quality
30.The Texas Commission on Environmental Quality can revoke an
operator's license if the operator: causes permit violation, falsifies records
or neglects their duty
31.If accidental discharge, bypass, or spill (SSO) of wastewater occurs
the responsible party MUST notify TCEQ regional offices within__hours:
24
32.Aerobic Bacteria require in the water for their metabolism: oxygen
33.Anaerobic Bacteria live with O2 present in the water for their
metab- olism: cannot
34.Facultative Bacteria require in the water for their metabolism:
either aerobic or anaerobic conditions
35.Chemical characteristics of sewage include: solids, greases, dissolved
oxy- gen, O2 Demand, pH, and gasses
