Welcome to the Water Treatment Operator Practice Test.
Choose the best possible answer to the question.
1.
What is the term that defines the calculation of a water plants physical property due wear and tear?
2.
Backwashing rate procedures should be reassessed to determine the cause of granular activated carbon loss if?
3.
What is the next test when the membrane filter test shows four green colored colonies after incubating for 24hrs?
4.
A total coliform positive sample must be tested for the presence of?
5.
Granular activated carbon is used as?
6.
Daily flow rates are limited in a conventional treatment plant due to the detention time needed to settle the floc and its sedimentation basin. What is the time range for the clarifier?
7.
A 50% solution of caustic soda will begin to crystallize if the temperature drops below?
8.
What percentage of the air is usually converted to ozone if air is used to generate ozone?
9.
The most probable cause of a problem with a chlorinator is?
10.
During daylight hours, algae growth in a reservoir will do what?
11.
An organic particle that is stabilized by attracting a layer of water molecules to its surface is known as a?
12.
Alachlor, Lindane, and Toxaphene are examples of?
13.
What does not pose a threat to human health in the drinking water?
14.
Detention time in flocculation basins are usually designed to provide for?
15.
What is the depression around the well of the water surface caused by pumping water from a well?
16.
Turbidity in the drinking water system can not exceed?
18.
If there is a notification of a HazMat spill of an unknown chemical into a stream that provides water to a water treatment plant, what would be the best action taken?
19.
What is the most favorable raw water condition for good flocculation?
20.
Shellfish grown in polluted waters have been known to contain the organism that causes infectious hepatitis.
21.
Anionic polymers are used as filter aids to agglomerate small floc particles left in the sedimentation basin effluent and make them tougher to avoid?
22.
The size of Giardia in the trophozoite stage is approximately?
23.
What is the best process for sequestering manganese?
24.
As CaCO3 how much alkalinity will dry-basis alum consume?
25.
Who can declare the vulnerability of a water source?
