Create an account
What mixed liquor characteristics indicate a healthy activated sludge process?
brown color, frothy appearance, and musty odor
T/F: Algae is a plant life necessary for the proper functioning of a stabilization or oxidation pond.
T/F: The highest concentration of algae growth in a facultative lagoon is usually observed near the top.
What is the purpose of heating and mixing a primary anaeroibic digester?
to increase the digestion rate
Considering the layout and flow diagram for the complete treament plant, oxidation ditch plants would be most similar to _____?
T/F: Assuming aa constant suction head, the discharge of a centrifugal pump decreases with an increase in discharge head.
T/F: The addition of chlorine, acid, carbon dioxide, or sulfuric acid will "lower" the pH of wastewater?
T/F: Controlling the sludge wasting rate by constant MLSS concentration involves maintaining a certain concentration of "volatile suspended solids in the reactor(aeration tanks)
T/F: The rotational speed of the air-driven rotating biological contactor (RBC) is controlled by "air volume".
When a high organic waste load reaches an activated sludge plant, the operator's first indicator is a decrease in
DO residual in the reactors (aeration tanks)
The amount of BOD in sludge entering a digester is an indirect measure of the
"food" available for bacteria in the digester.
In certain situations, a supervisor encourages the employees to make their own decisions. This is considered to be ______
highly desirable because it encourages employee growth and frees the supervisor for other tasks
What peeice of lab equipment should be calibrated daily at a treament plant?
portable dissoved oxygen probe
A chlorine demand test will show the ______.
amount of chlorine required to give a desired residual after a given time.
Which activated sludge process ccould handle shock loads of dairy waste most effectively?
a tapered aeration system
When chlorine reacts with hydrogen sulfide gas, the hydrogen sulfide is ______.
oxidized and made odorless
T/F: in the membrane filter method, the number of coliforms is estimated by the _____.
number of coloniew grown
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together