Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What emergency kit is for chlorine tank cars?
2.
The ion exchange process usually is used to remove what from water?
3.
Vegetation control in and around reservoirs is practiced to control the release of chemical compounds that
4.
Potassium Permanganate should be?
5.
Which forces will pull particles together once they have been destabilized in the coagulation-flocculation process?
6.
An autoclave will sterilize at
7.
If the continuous monitoring of the residual disinfectant concentration of the water entering the water system fails, how often will an operator need to collect a grab sample until the problem is fixed?
8.
What form is the protozoan Giardia Lamblia transmitted in?
9.
If the water temperature decreases this will cause the disinfection action of chlorine to?
10.
Gravity filters should not use more than what percent of daily production for backwash?
11.
Bar screens are used to?
12.
A total coliform positive sample must be tested for the presence of?
13.
If there is debris found in the filter bed after backwashing a filter this can indicate?
14.
The marble test is used to determine if water is saturated with calcium carbonate and has what other general use?
15.
The more hydroxide ions
16.
What are the four zones that divide a typical sedimentation basin?
17.
What units ae the MCLs for radium-226, radium 228 and gross alpha particles radioactivity measured in?
18.
Which is the best removal method if a well contains soluble iron?
19.
Plant growth in a reservoir will usually be found at a depth of?
20.
What should an operator do to compensate for temperature changes in a conventional water treatment plant with dual media filters that has very cold water in the winter and warm water in the summer?
21.
What type of pump is most commonly used to feed chemicals into a water supply?
22.
What is the only MCL that varies with the temperature?
23.
The factors that effect coagulation and flocculation with alum are
24.
A sedimentation basin with mechanical sludge removal equipment should be drained and inspected?
25.
The maximum amount of time that between draining, cleaning, and inspection of sedimentation basins with mechanical sludge removal components is?
