1
CA Wastewater Grade 3 Sample
Questions (Newest 2025/2026 Update)
Real Exam Questions and Answers |
Certified Solutions | 100 % Correct | A
Grade.
Quiz_________________?
Fluffy white foam indicates low aerator solids concentration, while leathery brown foam indicates high
solids concentration. -
Answer☑️
T
Quiz_________________?
When an anaerobic digester is becoming upset, the first sign will be increased alkalinity and decreased
volatile acid concentration -
Answer☑️
F
Quiz_________________?
Surface aerator oxygen transfer efficiency increases as submergence decreases and the oxygen transfer
efficiency increases -
Answer☑️
F
Quiz_________________?
When chlorine is used before disinfection for odor control it is not necessary to satisfy a chlorine
demand. -
, Answer☑️
2
F
Quiz_________________?
Biological secondary treatment processes should remove at least 85% of the influent BOD -
Answer☑️
T
Quiz_________________?
Short detention times are normal for package plants -
Answer☑️
F
Quiz_________________?
An activated sludge plant with an MCRT of over 10-days is normally
considered an extended aeration plant. -
Answer☑️
T
Quiz_________________?
Wasting of activated sludge on a continuos basis is the preferred
method. -
Answer☑️
T
Quiz_________________?
SVI is used as an indicator for clarifier stability. -
Answer☑️
T
, 3
Quiz_________________?
The standard BOD test measures the amount of dissolved oxygen
consumed by bacteria as they utilize waste for food during a 8 day period
at 15 degrees Celsius. -
Answer☑️
F
Quiz_________________?
When operating an aerobic digester be sure to keep the feed sludge
volatile solid concentration high or else the percent reduction will decrease -
Answer☑️
F
Quiz_________________?
Any sample can be "fixed" for later testing. -
Answer☑️
F
Quiz_________________?
The nice thing about anaerobic process is the operator can smoke
since no oxygen is present for a fire to start. -
Answer☑️
F
Quiz_________________?
Dissolved oxygen in an aeration tank should be at a minimum of 1 ppm
for biological nitrification -
Answer☑️
CA Wastewater Grade 3 Sample
Questions (Newest 2025/2026 Update)
Real Exam Questions and Answers |
Certified Solutions | 100 % Correct | A
Grade.
Quiz_________________?
Fluffy white foam indicates low aerator solids concentration, while leathery brown foam indicates high
solids concentration. -
Answer☑️
T
Quiz_________________?
When an anaerobic digester is becoming upset, the first sign will be increased alkalinity and decreased
volatile acid concentration -
Answer☑️
F
Quiz_________________?
Surface aerator oxygen transfer efficiency increases as submergence decreases and the oxygen transfer
efficiency increases -
Answer☑️
F
Quiz_________________?
When chlorine is used before disinfection for odor control it is not necessary to satisfy a chlorine
demand. -
, Answer☑️
2
F
Quiz_________________?
Biological secondary treatment processes should remove at least 85% of the influent BOD -
Answer☑️
T
Quiz_________________?
Short detention times are normal for package plants -
Answer☑️
F
Quiz_________________?
An activated sludge plant with an MCRT of over 10-days is normally
considered an extended aeration plant. -
Answer☑️
T
Quiz_________________?
Wasting of activated sludge on a continuos basis is the preferred
method. -
Answer☑️
T
Quiz_________________?
SVI is used as an indicator for clarifier stability. -
Answer☑️
T
, 3
Quiz_________________?
The standard BOD test measures the amount of dissolved oxygen
consumed by bacteria as they utilize waste for food during a 8 day period
at 15 degrees Celsius. -
Answer☑️
F
Quiz_________________?
When operating an aerobic digester be sure to keep the feed sludge
volatile solid concentration high or else the percent reduction will decrease -
Answer☑️
F
Quiz_________________?
Any sample can be "fixed" for later testing. -
Answer☑️
F
Quiz_________________?
The nice thing about anaerobic process is the operator can smoke
since no oxygen is present for a fire to start. -
Answer☑️
F
Quiz_________________?
Dissolved oxygen in an aeration tank should be at a minimum of 1 ppm
for biological nitrification -
Answer☑️
