2/16/25, 5:17 PM TCEQ Wastewater License Exam (2025) comprehensive questions and verified detailed solutions ( MULTIPLE CHOICES) |10…
TCEQ Wastewater License Exam (2025)
comprehensive questions and verified detailed
solutions ( MULTIPLE CHOICES) |100%
CORRECT!!
Save
Terms in this set (112)
Environment --> Water Treatment --> Water
What are the steps of the Distribution System --> Customer Use -->
Water Use Cycle? Wastewater Collection System --> Wastewater
Treatment --> Environment
- Removal of health hazards
What are the benefits of - Prevention of odors and flies
the collection system? - Cleanliness and appearance
- Comfort and convenience
Septic wastewater doesn't contain dissolved oxygen
Septic vs. Fresh and is difficult to treat. Fresh wastewater contains
wastewater? dissolved oxygen and is easier to treat, which results
in higher quality effluent
Inflow Surface runoff that enters the collection system
Groundwater that enters the collection system
Infiltration
through holes, cracks, etc.
What is the average 100 gallons per day
domestic contribution to
the collection system?
(Per person/day)
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, 2/16/25, 5:17 PM TCEQ Wastewater License Exam (2025) comprehensive questions and verified detailed solutions ( MULTIPLE CHOICES) |10…
What are the four Physical, Chemical, Bacteriological, and
wastewater Radiological
characteristics?
Domestic wastewater is 99.9% water, 0.1% solids
___% water and ___% solids
Suspended solids that will settle when wastewater
Settleable solids
flow is still or slow moving
What is the pH scale 0 (most acidic) to 14 (most basic), 7 is neutral
range?
Does septic or freshwater Septic has lower pH due to volatile acids formed
have a lower pH? Why? from wastewater decomposition
A colorless, toxic, and flammable gas that
What is Hydrogen Sulfide
resembles the smell of rotten eggs. It results from
(H2S)? When does it
the bacterial breakdown of organic matter in the
occur?
absence of oxygen. It is heavier than air.
What is Methane? (CH4) A colorless, odorless, and highly flammable gas.
What percentage of Methane is an asphyxiant and is lighter than air.
methane is in digester Digester gas contains 65% methane and is used for
gas? heating fuel or operating equipment.
A colorless, odorless gas that has a suffocating
effect. When inhaled at higher than normal
What is carbon dioxide?
concentrations, it can produce a sour taste in the
(CO2)
mouth and a stinging sensation in the nose and
throat.
What is carbon A colorless, odorless, and tasteless gas
monoxide? (CO)
Why is oil and grease a It may cause explosions, fires, line blockages, and
concern if present in odor
wastewater?
What are chlorides and Excessive chlorides interfere with treatment
why are excessive processes, especially trickling filters. They also
chlorides in wastewater affect laboratory tests.
bad?
https://quizlet.com/1006518157/tceq-wastewater-license-exam-2025-comprehensive-questions-and-verified-detailed-solutions-multiple-choices-… 2/14
TCEQ Wastewater License Exam (2025)
comprehensive questions and verified detailed
solutions ( MULTIPLE CHOICES) |100%
CORRECT!!
Save
Terms in this set (112)
Environment --> Water Treatment --> Water
What are the steps of the Distribution System --> Customer Use -->
Water Use Cycle? Wastewater Collection System --> Wastewater
Treatment --> Environment
- Removal of health hazards
What are the benefits of - Prevention of odors and flies
the collection system? - Cleanliness and appearance
- Comfort and convenience
Septic wastewater doesn't contain dissolved oxygen
Septic vs. Fresh and is difficult to treat. Fresh wastewater contains
wastewater? dissolved oxygen and is easier to treat, which results
in higher quality effluent
Inflow Surface runoff that enters the collection system
Groundwater that enters the collection system
Infiltration
through holes, cracks, etc.
What is the average 100 gallons per day
domestic contribution to
the collection system?
(Per person/day)
https://quizlet.com/1006518157/tceq-wastewater-license-exam-2025-comprehensive-questions-and-verified-detailed-solutions-multiple-choices-… 1/14
, 2/16/25, 5:17 PM TCEQ Wastewater License Exam (2025) comprehensive questions and verified detailed solutions ( MULTIPLE CHOICES) |10…
What are the four Physical, Chemical, Bacteriological, and
wastewater Radiological
characteristics?
Domestic wastewater is 99.9% water, 0.1% solids
___% water and ___% solids
Suspended solids that will settle when wastewater
Settleable solids
flow is still or slow moving
What is the pH scale 0 (most acidic) to 14 (most basic), 7 is neutral
range?
Does septic or freshwater Septic has lower pH due to volatile acids formed
have a lower pH? Why? from wastewater decomposition
A colorless, toxic, and flammable gas that
What is Hydrogen Sulfide
resembles the smell of rotten eggs. It results from
(H2S)? When does it
the bacterial breakdown of organic matter in the
occur?
absence of oxygen. It is heavier than air.
What is Methane? (CH4) A colorless, odorless, and highly flammable gas.
What percentage of Methane is an asphyxiant and is lighter than air.
methane is in digester Digester gas contains 65% methane and is used for
gas? heating fuel or operating equipment.
A colorless, odorless gas that has a suffocating
effect. When inhaled at higher than normal
What is carbon dioxide?
concentrations, it can produce a sour taste in the
(CO2)
mouth and a stinging sensation in the nose and
throat.
What is carbon A colorless, odorless, and tasteless gas
monoxide? (CO)
Why is oil and grease a It may cause explosions, fires, line blockages, and
concern if present in odor
wastewater?
What are chlorides and Excessive chlorides interfere with treatment
why are excessive processes, especially trickling filters. They also
chlorides in wastewater affect laboratory tests.
bad?
https://quizlet.com/1006518157/tceq-wastewater-license-exam-2025-comprehensive-questions-and-verified-detailed-solutions-multiple-choices-… 2/14
