Wastewater Treatment Class B Test Questions and Answers 100% Correct
Lift stations at a treatment plant or those which discharge directly to a treatment
... [Show More] 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: - 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. - 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 - 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: - Call appropriate emergency response personnel.
The definition of an oxygen-deficient atmosphere is one that contains less than ________ percent oxygen. - 19.5
A combustible atmosphere: - 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 - Ozone
The Sludge Volume Index (SVI) is: - the volume of settled sludge (30-minutes) in ml/L times 1000, divided by the concentration in mg/L of MLSS.
Biomonitoring - 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: - Residual chlorine was NOT present during the 24-hour period.
In an activated sludge treatment plant, the 30 minute settleability test indicates:
A) The clarity of the effluent
B) The influence of surface tension settling
C) The current settling capabilities in the clarifier
D) The ability of the organisms to flocculate and settle.
E) All of the above - E) All of the above
Setting work goals for an individual works best - Accompanied by an action plan
One element of being an effective communicator is to: - be a good listener
An efficient primary clarifier is expected to remove _______ of the influent, settable solids. - 90 percent or better [Show Less]