1|Page
Georgia Wastewater Operator Class III Certification
Exam ACTUAL VERIFIED EXAM COMPLETE
QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE.pdf
If your activated sludge plant begins to nitrify, what
conditions would you expect to decrease?
A. settling in clarifiers
B. chlorine demand
C. BOD effluent
D. TSS in effluent - Answer-a. settling in the clarifiers
How do you calibrate a chemical feed pump?
A. by measuring the pump output
B. using the SWAG method
C. jar test
D. with a microscope - Answer-A. by measuring the pump
output
,2|Page
What is the chemical formula for sulfuric acid?
a. HNO3
b. HCl
c. NaOH
d. H2SO4 - Answer-d. H2SO4
What is the most common type of activated sludge
package plants?
a. extended aeration
b. sequential batch reactor
c. oxidation ditch
d. bardenpho - Answer-a. extended aeration
What is the most appropriate method of reducing the F:M
ratio?
A. increase wasting
b. decrease wasting
c. reduce BOD from influent flow
,3|Page
D. add polymer to RAS to increase settling - Answer-b.
decrease wasting
An operator notices a portion of the aeration tank with
large bubbles rising up. What is the most likely problem?
a. equal air distribution
b. unequal air distribution caused by a blown/clogged
diffuser
c. normal operation
d. reason to believe the air filter in the blower is clogged -
Answer-b. unequal air distribution caused by a blown
diffuser
What is the predominant organism in a healthy activated
sludge treatment plant?
A. Stalked ciliates
B. rotifers
C. nematodes
D. amoebas - Answer-A. Stalked Ciliates
A composite sample must be?
, 4|Page
A. sporadically collected in the treatment plant
B. taken at one time
C. analyzed immediately
D. representative and sub-samples time spaced over 15
minutes apart - Answer-D. representative and sub-
samples time spaced over 15 minutes apart
What is the standard volume for a BOD sample bottle?
A. 150 mL
B. 200 mL
C. 300 mL
D. 500 mL - Answer-c. 300 mL
If you have a lime slurry feed line, what is the best valve to
use?
A. plug valve
B. butterfly valve
C. RPZ dual check valve
Georgia Wastewater Operator Class III Certification
Exam ACTUAL VERIFIED EXAM COMPLETE
QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE.pdf
If your activated sludge plant begins to nitrify, what
conditions would you expect to decrease?
A. settling in clarifiers
B. chlorine demand
C. BOD effluent
D. TSS in effluent - Answer-a. settling in the clarifiers
How do you calibrate a chemical feed pump?
A. by measuring the pump output
B. using the SWAG method
C. jar test
D. with a microscope - Answer-A. by measuring the pump
output
,2|Page
What is the chemical formula for sulfuric acid?
a. HNO3
b. HCl
c. NaOH
d. H2SO4 - Answer-d. H2SO4
What is the most common type of activated sludge
package plants?
a. extended aeration
b. sequential batch reactor
c. oxidation ditch
d. bardenpho - Answer-a. extended aeration
What is the most appropriate method of reducing the F:M
ratio?
A. increase wasting
b. decrease wasting
c. reduce BOD from influent flow
,3|Page
D. add polymer to RAS to increase settling - Answer-b.
decrease wasting
An operator notices a portion of the aeration tank with
large bubbles rising up. What is the most likely problem?
a. equal air distribution
b. unequal air distribution caused by a blown/clogged
diffuser
c. normal operation
d. reason to believe the air filter in the blower is clogged -
Answer-b. unequal air distribution caused by a blown
diffuser
What is the predominant organism in a healthy activated
sludge treatment plant?
A. Stalked ciliates
B. rotifers
C. nematodes
D. amoebas - Answer-A. Stalked Ciliates
A composite sample must be?
, 4|Page
A. sporadically collected in the treatment plant
B. taken at one time
C. analyzed immediately
D. representative and sub-samples time spaced over 15
minutes apart - Answer-D. representative and sub-
samples time spaced over 15 minutes apart
What is the standard volume for a BOD sample bottle?
A. 150 mL
B. 200 mL
C. 300 mL
D. 500 mL - Answer-c. 300 mL
If you have a lime slurry feed line, what is the best valve to
use?
A. plug valve
B. butterfly valve
C. RPZ dual check valve
