If the Total Hardness is greater than the total Alkalinity, the hardness is what?
Noncarbonate Hardness
What Is a byproduct of Slaked Lime?
Heat
What pretreatment in R.O. will NOT harm the membranes?
U.V.
If you insert a Negatively charged probe into a water main what will happen to the water particles?
The Anodes will attract to it....
What is the most common cause of a Water Distribution Main failure?
Corrosion
What is the best PH range in the coagulation process?
Depends on chemicals being used
How is the 'C' factor calculated?
The inside rigidness of the pipe.
Why are Tube Settlers highly recommended in the Sedimentation process?
Increase the capacity of removing sedimentation
What is considered an advantage of using centrifuges to dewater sludge?
Sludge thickness can vary
What is an Arch?
A bridge of caked chemical which prevent the chemical flow
Annual quantity of water that can be taken from a water supply without depleting it?
Safe Yield
What does Destratification accomplish?
Replaces D.O.
A question on what tests would be beneficial to determine the best chemical dose to control a Taste and Odor problem?
A: Turbidity, Jar Test, Threshold Odor Number
B: Chlorine Demand, Marble Test, Jar Test
C: Chlorine, Turbidity, Jar ??????
When performing a Lab test the Titration is hard to view, what can be done to help gain results?
Add an Inhibitor Reagent
What will insufficient backwashing of a filter will NOT cause?
Media Boils
Which of these factors will influence corrosion?
I answered: A soft water with high D.O. (or something like this)
When choosing source water, a high concern for treatment type is...
A: Fish life and Algae Life
B: Turbidity and D.O....
Have a filter that is (X) feet long, (X) feet wide, and (X) feet deep. If you pass water through it for 15 minutes at 15g/per min what is the total water flow?
83223 (x)x(x)x(x) = 1400
What test can be done to determine the correct chemical dosage?
Jar Test