WASTEWATER TREATMENT B
THE WASTEWATER TREATMENT B EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026/2027.
Lift stations at a treatment plant or those which discharge directly to a treatment
plant with an average flow greater than 0.1 MGD shall have three or more pumps
or have automatically controlled variable capacity pumps, these pumps should be
adjusted to actual flow conditions and controlled to operate so as to: answer >>>
Minimize surges in the treatment in the treatment units.
In the contact stabilization system of activated sludge treatment, the detention
time in the contact zone is designed be _______ other types of activated sludge
treatment. answer >>> shorter than
According to current TCEQ wastewater operator certification rules, an operator
can renew a Class D Wastewater Treatment Plant Operator if he or she:
A) Works only in a collection system
B) Is an operator at an activated sludge plant
C) Is an operator at a trickling filter treatment facility with a permitted daily
average flow of 0.15 MGD.
D) Both A and C.
E) None of the Above answer >>> None of the Above
If a Leak is suspected in an off-line, back-up, one-ton chlorine cylinder, after
putting on proper safety equipment, the operator should first: answer >>> Call
appropriate emergency response personnel.
, WASTEWATER TREATMENT B
The definition of an oxygen-deficient atmosphere is one that contains less than
________ percent oxygen. answer >>> 19.5
A combustible atmosphere: answer >>> contains oxygen and flammable gas,
vapor, or dust
All of the following EXCEPT ________ are damaging or irritating to the mucus
membranes or lungs if inhaled:
A) Ozone
B) Lime Dust
C) Chlorine Gas
D) Carbon Dioxide
E) Ferric Chloride Dust answer >>> Ozone
The Sludge Volume Index (SVI) is: answer >>> the volume of settled sludge (30-
minutes) in ml/L times 1000, divided by the concentration in mg/L of MLSS.
Biomonitoring answer >>> Involves the use of aquatic life to test the toxicity of a
wastewater treatment plant effluent.
A 24-Hour composite sample was tested for chlorine residual and found to
contain none. These results indicate that: answer >>> Residual chlorine was NOT
present during the 24-hour period.
In an activated sludge treatment plant, the 30-minute settle ability test indicates:
A) The clarity of the effluent
THE WASTEWATER TREATMENT B EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026/2027.
Lift stations at a treatment plant or those which discharge directly to a treatment
plant with an average flow greater than 0.1 MGD shall have three or more pumps
or have automatically controlled variable capacity pumps, these pumps should be
adjusted to actual flow conditions and controlled to operate so as to: answer >>>
Minimize surges in the treatment in the treatment units.
In the contact stabilization system of activated sludge treatment, the detention
time in the contact zone is designed be _______ other types of activated sludge
treatment. answer >>> shorter than
According to current TCEQ wastewater operator certification rules, an operator
can renew a Class D Wastewater Treatment Plant Operator if he or she:
A) Works only in a collection system
B) Is an operator at an activated sludge plant
C) Is an operator at a trickling filter treatment facility with a permitted daily
average flow of 0.15 MGD.
D) Both A and C.
E) None of the Above answer >>> None of the Above
If a Leak is suspected in an off-line, back-up, one-ton chlorine cylinder, after
putting on proper safety equipment, the operator should first: answer >>> Call
appropriate emergency response personnel.
, WASTEWATER TREATMENT B
The definition of an oxygen-deficient atmosphere is one that contains less than
________ percent oxygen. answer >>> 19.5
A combustible atmosphere: answer >>> contains oxygen and flammable gas,
vapor, or dust
All of the following EXCEPT ________ are damaging or irritating to the mucus
membranes or lungs if inhaled:
A) Ozone
B) Lime Dust
C) Chlorine Gas
D) Carbon Dioxide
E) Ferric Chloride Dust answer >>> Ozone
The Sludge Volume Index (SVI) is: answer >>> the volume of settled sludge (30-
minutes) in ml/L times 1000, divided by the concentration in mg/L of MLSS.
Biomonitoring answer >>> Involves the use of aquatic life to test the toxicity of a
wastewater treatment plant effluent.
A 24-Hour composite sample was tested for chlorine residual and found to
contain none. These results indicate that: answer >>> Residual chlorine was NOT
present during the 24-hour period.
In an activated sludge treatment plant, the 30-minute settle ability test indicates:
A) The clarity of the effluent
