Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What is a physical separation between a water supply outlet and the flood-level rim of a receiving vessel that must be at least twice the diameter of the water supply outlet and the flood-level rim of the receiving vessel. This separation must be at leasttwice the diameter of the water supply outlet and never less than one inch?
2.
If adequate surface area and detention time is provided in the sedimentation basin, what would the expected solids removal efficiency level be?
3.
What sludge dewatering process is best for alum sludges when the cakes are very dry, filtrate is clear, and solids capture is very high?
4.
What do long filter runs tend to cause?
5.
What is the best type of salt to use in the regeneration of ion exchange softener resin?
6.
What type of polymers are sometimes formulated with regulated substances?
7.
Operators working at a treatment plant should only use self contained breathing apparatus equipment that has been approved by what agency?
8.
Adding CO2 to water will?
9.
What type of water violation requires an all clear notification be given to the public?
10.
Acid rain is caused by
11.
Even a low concentration of ammonia gas can be fatal to humans if it is at least?
12.
What test is used to estimate the optimum dosage of chemical compounds used for some process in water treatment?
13.
The upper surface of the zone of saturation of ground water in an unconfined aquifer is called the?
14.
The sampling points located for required sampling of natural radionuclides are located?
15.
What was created to have uniform standards in Water Treatment?
16.
Where do Enteropathogenic organisms in water supplies originate?
17.
What is the principle form of alkalinity found in raw water from both surface and ground sources?
18.
What is used for detection of chlorine gas leaks?
19.
What organism is associated with taste and odors?
20.
Under the process of safety management, sites are required to do a site assessment if the facility in a single process has more than how many pounds of chlorine?
21.
What is the maximum feed rate when adding fluoride to drinking water?
22.
Opening the discharge valve one full turn on a chlorine cylinder will?
23.
What disinfectant is commonly used and free of Cl2 to avoid THMs?
24.
When entering a permitted confined space entry structure, always complete a permit and?
25.
What occurs in raw water as the level of ammonia decreases?
