Water Treatment Operator Certification Study Guide (AWWA)
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Water Treatment Operator Certification
Institution
Water Treatment Operator Certification
Water Treatment Operator Certification
Study Guide (AWWA)
A continuously flowing watercourse Ans- Perennial Stream
Algae causes PH to ....... at night Ans- Decrease
What contributes to creation of algae blooms Ans- Increased nutrients
Iron is found mostly in what sources of water Ans- Groundw...
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Water Treatment Operator Certification
Study Guide (AWWA)
A continuously flowing watercourse Ans- Perennial Stream
Algae causes PH to ....... at night Ans- Decrease
What contributes to creation of algae blooms Ans- Increased nutrients
Iron is found mostly in what sources of water Ans- Groundwater
Also called the rule of reasonable sharing Ans- Riparian Doctrine
Water high in salinity and warm is Ans- Low in dissolved oxygen
Reservoir turnover Ans- Denser water at surface sinking toward the bottom
Water that flows into rivers after rainfall Ans- Surface runoff
Recreation can ....... of land adjacent to a reservoir Ans- increase the threat of erosion
Water bearing geological zone composed of material deposited by flowing rivers Ans- Alluvial aquifer
What effect will algae have on dissolved oxygen Ans- Increase DO during the day and lower DO during
the night
How does alkalinity effect the use of copper sulfate Ans- Copper sulfate is more effective as alkalinity
decreases
, The amount of water in a formation depends on..... Ans- The porosity of the water-bearing formation
What enables blue green algae to grow Ans- Nutrients
Recommended loading rate of copper sulfate for algae control Ans- 5.4 lbs per acre of surface area
Primary origin of coliform bacteria Ans- Animal or human feces
Amount of water a well produces for each foot of drawdown Ans- Specific capacity
Most common well used in public water supply Ans- Drilled well
What is disinfection Ans- inactivation or killing of pathogenic organisms
free chlorine residual valus are based on a contact time of.... Ans- 10 minutes
Strength of Calcium Hypochlorite Ans- 65-70%
What chemicals raise PH in water Ans- Soda Ash, Caustic Soda,
As water temp increases, disinfection action....... Ans- Increases
Maximum chlorine usage per day from a 150lb cylinder Ans- 42 lbs
What chemical is used to soften water through chemical precipitation Ans- Calcium hydroxide (lime)
Mudballs are clumps of........ Ans- Filter media and other material
Coagulation occurs during the first ..... Ans- 1 to 5 seconds
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