Texas TSTC Wastewater Operator Examination Exam

Texas TSTC Wastewater
Operator Examination
Exam

,Texas TSTC Wastewater Operator Examination Exam



Question 1
Keep these concerns distinct. Which sequence of topics correctly matches the numbered
descriptions?
1. Filtration systems (granular media and membrane filtration)
2. Return Activated Sludge (RAS) and Waste Activated Sludge (WAS) management
3. Identification and mitigation of hazardous gases (H2S, methane, carbon dioxide, carbon
monoxide)
4. Flow measurement devices (parshall flumes, weir structures, and magnetic flow meters)

A. 1: Advanced and Tertiary Treatment; 2: Wastewater Sources and Characteristics; 3:
Suspended Growth Systems (Activated Sludge); 4: Preliminary Treatment
B. 1: Advanced and Tertiary Treatment; 2: Suspended Growth Systems (Activated Sludge); 3:
Wastewater Sources and Characteristics; 4: Preliminary Treatment
C. 1: Advanced and Tertiary Treatment; 2: Preliminary Treatment; 3: Suspended Growth Systems
(Activated Sludge); 4: Wastewater Sources and Characteristics
D. 1: Wastewater Sources and Characteristics; 2: Suspended Growth Systems (Activated Sludge);
3: Preliminary Treatment; 4: Advanced and Tertiary Treatment

Correct Answer: B
Full Explanation: The correct associations are 1 with Advanced and Tertiary Treatment
(Filtration systems (granular media and membrane filtration)); 2 with Suspended Growth Systems
(Activated Sludge) (Return Activated Sludge (RAS) and Waste Activated Sludge (WAS)
management); 3 with Wastewater Sources and Characteristics (Identification and mitigation of
hazardous gases (H2S, methane, carbon dioxide, carbon monoxide)); 4 with Preliminary
Treatment (Flow measurement devices (parshall flumes, weir structures, and magnetic flow
meters)). Exchanging these topics changes the subject of one or more concerns rather than
preserving their distinct meanings.




Questions and Explanations 2

,Texas TSTC Wastewater Operator Examination Exam



Question 2
Which answer gives the correct topic for each numbered focus, without exchanging their roles?
1. Pond maintenance, organic loading limits, detention times, and algae dynamics
2. Chemical dosage calculations and chlorine feed rates
3. Filtration systems (granular media and membrane filtration)

A. 1: Operational and Process Calculations; 2: Advanced and Tertiary Treatment; 3: Attached
Growth and Pond Systems
B. 1: Advanced and Tertiary Treatment; 2: Attached Growth and Pond Systems; 3: Operational
and Process Calculations
C. 1: Operational and Process Calculations; 2: Attached Growth and Pond Systems; 3: Advanced
and Tertiary Treatment
D. 1: Attached Growth and Pond Systems; 2: Operational and Process Calculations; 3: Advanced
and Tertiary Treatment

Correct Answer: D
Full Explanation: The correct associations are 1 with Attached Growth and Pond Systems (Pond
maintenance, organic loading limits, detention times, and algae dynamics); 2 with Operational
and Process Calculations (Chemical dosage calculations and chlorine feed rates); 3 with Advanced
and Tertiary Treatment (Filtration systems (granular media and membrane filtration)). Exchanging
these topics changes the subject of one or more concerns rather than preserving their distinct
meanings.



Question 3
Match each numbered concern to its subject area. Which answer preserves all of the
associations?
1. Grit removal systems (grit chambers, velocity control, and cyclone degritters)
2. Trenching, shoring, and confined space entry safety protocols

A. 1: Operation, Maintenance, and Safety; 2: Operation, Maintenance, and Safety
B. 1: Preliminary Treatment; 2: Preliminary Treatment
C. 1: Preliminary Treatment; 2: Operation, Maintenance, and Safety
D. 1: Operation, Maintenance, and Safety; 2: Preliminary Treatment

Correct Answer: C
Full Explanation: The correct associations are 1 with Preliminary Treatment (Grit removal
systems (grit chambers, velocity control, and cyclone degritters)); 2 with Operation, Maintenance,
and Safety (Trenching, shoring, and confined space entry safety protocols). Exchanging these
topics changes the subject of one or more concerns rather than preserving their distinct
meanings.




Questions and Explanations 3

, Texas TSTC Wastewater Operator Examination Exam



Question 4
A task combines Primary Treatment with Wastewater Sources and Characteristics, but the
current discussion only considers Theory and function of primary sedimentation tanks / primary
clarifiers. Which concern would supply the missing focus?

A. Effluent disposal methods, surface water discharge, and land application reuse
B. Composition of wastewater (99.9% water, 0.1% dissolved and suspended solids)
C. Basic Wastewater Operator Practice Exam
D. Troubleshooting operational issues (sludge bulking, rising sludge, foaming, and filament
growth)

Correct Answer: B
Full Explanation: The existing discussion concerns Primary Treatment, specifically Theory and
function of primary sedimentation tanks / primary clarifiers. To add the second focus, Wastewater
Sources and Characteristics, the relevant material is Composition of wastewater (99.9% water,
0.1% dissolved and suspended solids). Adding more material from the first topic would not
address the missing second concern.



Question 5
A review keeps Troubleshooting operational issues separate from Types of collection systems.
Which answer correctly illustrates the first topic and then the second?

A. 1: gravity sewers, force mains, and inverted siphons; 2: sludge bulking, rising sludge, foaming,
and filament growth
B. 1: sludge bulking, rising sludge, foaming, and filament growth; 2: sludge bulking, rising sludge,
foaming, and filament growth
C. 1: gravity sewers, force mains, and inverted siphons; 2: gravity sewers, force mains, and
inverted siphons
D. 1: sludge bulking, rising sludge, foaming, and filament growth; 2: gravity sewers, force mains,
and inverted siphons

Correct Answer: D
Full Explanation: The first topic, Troubleshooting operational issues, includes sludge bulking,
rising sludge, foaming, and filament growth. The second, Types of collection systems, includes
gravity sewers, force mains, and inverted siphons. Reversing the two or repeating the same
discussion point for both would lose the distinction required by the question.




Questions and Explanations 4