7/19/26, 11:38 AM AWWA Water Operator Certification Exam Prep Flashcards | Quizlet
AWWA Water Operator Certification Exam Save
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NUTR 523 Final Introduction to Chemistry NDSU Chem 121 Exam 1 SCH4U
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Terms in this set (520)
What is the most common disinfection by product when Chloroform
adding chlorine to water containing natural and inorganic
matter?
What will most probably cause taste and odors, slime, Blue-green Algae
and filter clogging?
Why can rapid sand filters handle higher filtration rates Coarser sand
compared to slow sand filters?
Iron bacteria can interfere with ___________ because the stabilization, a slime layer
bacteria produce _____________that prevents the stabilization
chemicals from reaching the pipe surface.
Hypochlorous acid is favored over hypochlorite ion when low, low
the pH is _____________and the temperature is ___________.
What filter has an unstratified media distribution? slow sand filters
What is (are) the combine chlorine residual(s) at pH Monochloramine and dichloramine
values ranging from 6.5 to 8.5?
When iron alone is treated using manganese greensand 1.0 to 1.2 times the iron concentration
filters, the chlorine feed rate should be about
_________________.
chlorination of water that has high concentrations of THMs
natural organic matter will produce
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, 7/19/26, 11:38 AM AWWA Water Operator Certification Exam Prep Flashcards | Quizlet
When disinfecting with chloramines, when can the Before, same time as, or after the chlorine
ammonia be added to the process?
What will settle out of the water in a short period of time? Very fine silt
Point-of-use activated carbon filters are most effective Chlorine
for removing _________________.
Potassium permanganate is used as an oxidant for Iron and manganese, organic precursors, and taste and odors
control of ____________________.
What must an operator periodically check regarding the Storage bin or hopper to empty of sand and grit
cyclone separator system?
These types of chemicals chemically tie up scale-forming Sequestering agents
ions and are eventually ingested by consumers.
An operator should record filter ______________ bed expansion, quarterly
measurements, condition, and depth of media on a ________
basis.
Lime will precipitate noncarbonate hardness from the CaSO4 and CaCl2
water, but it also orms noncarbonate salts that cause
noncarbonate hardness. What are these salts?
What are absolute ratings based on with regard to Largest pore opening
membranes?
How ar manganese greensand beds regenerated? Backwashed with permanganate solution
The most effective process for removing radon gas, when packed tower aeration
considering cost and footprint, would be ____________.
What is the primary advantage of placing a properly Longer filter run times
sized anthracite coal layer over manganese greensand?
What factor will cause problems for chlorination? Foreign substances
In the lime-soda ash softening process, smaller plants calcium hydroxide, lime
find that ________ is less expensive to purchase; regardless
of the size of the plant, ___________ needs to be mixed long
enough because it dissolves rather slowly.
What does the optimal pH establish when applied to iron Detention time
and manganese oxidation?
A water plant using chloramines as a disinfectant has Taste and odor will develop, Bacterial growth will be supported, and Nitrification
allowed sizable amounts of turbidity to enter the
distribution system. If this occurs over a period of years,
what will occur at the far end of the distribution system?
https://quizlet.com/1193733687/awwa-water-operator-certification-exam-prep-flash-cards/ 2/7
AWWA Water Operator Certification Exam Save
Prep
Leave the first rating
Students also studied
Flashcard sets Study guides
NUTR 523 Final Introduction to Chemistry NDSU Chem 121 Exam 1 SCH4U
Teacher 125 terms Teacher 79 terms Teacher 125 terms Teacher
EXTENSION123 Preview Lionel_Messi330 Preview kithomefrank Preview Ram
Terms in this set (520)
What is the most common disinfection by product when Chloroform
adding chlorine to water containing natural and inorganic
matter?
What will most probably cause taste and odors, slime, Blue-green Algae
and filter clogging?
Why can rapid sand filters handle higher filtration rates Coarser sand
compared to slow sand filters?
Iron bacteria can interfere with ___________ because the stabilization, a slime layer
bacteria produce _____________that prevents the stabilization
chemicals from reaching the pipe surface.
Hypochlorous acid is favored over hypochlorite ion when low, low
the pH is _____________and the temperature is ___________.
What filter has an unstratified media distribution? slow sand filters
What is (are) the combine chlorine residual(s) at pH Monochloramine and dichloramine
values ranging from 6.5 to 8.5?
When iron alone is treated using manganese greensand 1.0 to 1.2 times the iron concentration
filters, the chlorine feed rate should be about
_________________.
chlorination of water that has high concentrations of THMs
natural organic matter will produce
https://quizlet.com/1193733687/awwa-water-operator-certification-exam-prep-flash-cards/ 1/7
, 7/19/26, 11:38 AM AWWA Water Operator Certification Exam Prep Flashcards | Quizlet
When disinfecting with chloramines, when can the Before, same time as, or after the chlorine
ammonia be added to the process?
What will settle out of the water in a short period of time? Very fine silt
Point-of-use activated carbon filters are most effective Chlorine
for removing _________________.
Potassium permanganate is used as an oxidant for Iron and manganese, organic precursors, and taste and odors
control of ____________________.
What must an operator periodically check regarding the Storage bin or hopper to empty of sand and grit
cyclone separator system?
These types of chemicals chemically tie up scale-forming Sequestering agents
ions and are eventually ingested by consumers.
An operator should record filter ______________ bed expansion, quarterly
measurements, condition, and depth of media on a ________
basis.
Lime will precipitate noncarbonate hardness from the CaSO4 and CaCl2
water, but it also orms noncarbonate salts that cause
noncarbonate hardness. What are these salts?
What are absolute ratings based on with regard to Largest pore opening
membranes?
How ar manganese greensand beds regenerated? Backwashed with permanganate solution
The most effective process for removing radon gas, when packed tower aeration
considering cost and footprint, would be ____________.
What is the primary advantage of placing a properly Longer filter run times
sized anthracite coal layer over manganese greensand?
What factor will cause problems for chlorination? Foreign substances
In the lime-soda ash softening process, smaller plants calcium hydroxide, lime
find that ________ is less expensive to purchase; regardless
of the size of the plant, ___________ needs to be mixed long
enough because it dissolves rather slowly.
What does the optimal pH establish when applied to iron Detention time
and manganese oxidation?
A water plant using chloramines as a disinfectant has Taste and odor will develop, Bacterial growth will be supported, and Nitrification
allowed sizable amounts of turbidity to enter the
distribution system. If this occurs over a period of years,
what will occur at the far end of the distribution system?
https://quizlet.com/1193733687/awwa-water-operator-certification-exam-prep-flash-cards/ 2/7
