7/19/26, 11:30 AM Water Operator Certification Study Guide Flashcards | Quizlet
Water Operator Certification Study Guide Save
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Illinois Class C Water Certification Water Operator Class D Study Guide... Drinking Water Treatment Operator ... Water T
165 terms 930 terms 101 terms 269 term
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Terms in this set (1241)
Two of the most important factors impacting the Concentration of the chlorine and contact time
effectiveness of chlorination are?
The treatment process that controls corrosion or Stabilization
scaling is known as?
Permanganate reactions are highly dependent upon? pH
It is hardest to kill the organism that causes which C. Cryptosporidiosis
one of the following illnesses
A. Cholera
B. Typhoid
C. Cryptosporidiosis
D. Infectious hepatitis
Disinfection of water wells with free chlorine requires 12 to 24 hours at 50 mg/L
exposure for how many hours at what concentration?
Which index determines the calcium carbonate Langelier saturation index
deposition property of water by calculating the
saturation pH, where a negative value indicates
corrosive water and a positive value indicates
depositing water?
The advantage to using the oxidant ozone is? It has little pH effect
Pretreatment with chlorine is being eliminated at Sometimes produce disinfection by products known to be carcinogenic
many water treatment plants because it has been
shown to?
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, 7/19/26, 11:30 AM Water Operator Certification Study Guide Flashcards | Quizlet
CTs are based on? Concentration of chlorine, contact time, pH, and temperature
If the natural flouride content of the raw water is Every day
variable, the concentration of the raw water should
be measure how often?
What is the primary drawback for facilities that use There is potential for the light bulbs to be coated with light obscuring
ultraviolet light to disinfect water? material preventing the UV light from killing microorganisms
Potassium permanganate is most effective in? Removing iron
Chlorine is advantageous over chloramines because? Chlorine is a much stronger oxidant
Which oxidant has the potential of producing ClO₃ Chlorine dioxide
byproducts?
How thick should the layer of sodium flouride 6 inches
crystals be maintained in a saturator tank for flows of
less than 100 gpm?
Which disinfectant would work best against Ozone
Cryptosporidium?
Which chemical oxidant would be best to use for D. Potassium permanganate
controlling trihalomethanes formation potential?
A. Chloramines
B. Chlorine dioxide
C. Oxygen
D. Potassium permanganate
Ozone generators A. Must be supplied with extremely dry air
A. Must be supplied with extremely dry air
B. Are usually plate type generators for large plants
C. Will produce 12% ozone by weight when supplied
with air
D. Will produce about 20% ozone by weight when
supplied with oxygen only
If air is used to generate ozone, which percentage of 1% to 3%
the air is usually converted to ozone?
Detention time in flocculation basins are usually 15 to 45 minutes
designed to provide for how many minutes?
Alum works best in a pH range of? 5.8 to 7.0
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Water Operator Certification Study Guide Save
Leave the first rating
Students also studied
Flashcard sets Study guides
Illinois Class C Water Certification Water Operator Class D Study Guide... Drinking Water Treatment Operator ... Water T
165 terms 930 terms 101 terms 269 term
Jnev2315 Preview marcel_begay Preview nick_samples Preview sam
Terms in this set (1241)
Two of the most important factors impacting the Concentration of the chlorine and contact time
effectiveness of chlorination are?
The treatment process that controls corrosion or Stabilization
scaling is known as?
Permanganate reactions are highly dependent upon? pH
It is hardest to kill the organism that causes which C. Cryptosporidiosis
one of the following illnesses
A. Cholera
B. Typhoid
C. Cryptosporidiosis
D. Infectious hepatitis
Disinfection of water wells with free chlorine requires 12 to 24 hours at 50 mg/L
exposure for how many hours at what concentration?
Which index determines the calcium carbonate Langelier saturation index
deposition property of water by calculating the
saturation pH, where a negative value indicates
corrosive water and a positive value indicates
depositing water?
The advantage to using the oxidant ozone is? It has little pH effect
Pretreatment with chlorine is being eliminated at Sometimes produce disinfection by products known to be carcinogenic
many water treatment plants because it has been
shown to?
https://quizlet.com/367535886/water-operator-certification-study-guide-flash-cards/ 1/8
, 7/19/26, 11:30 AM Water Operator Certification Study Guide Flashcards | Quizlet
CTs are based on? Concentration of chlorine, contact time, pH, and temperature
If the natural flouride content of the raw water is Every day
variable, the concentration of the raw water should
be measure how often?
What is the primary drawback for facilities that use There is potential for the light bulbs to be coated with light obscuring
ultraviolet light to disinfect water? material preventing the UV light from killing microorganisms
Potassium permanganate is most effective in? Removing iron
Chlorine is advantageous over chloramines because? Chlorine is a much stronger oxidant
Which oxidant has the potential of producing ClO₃ Chlorine dioxide
byproducts?
How thick should the layer of sodium flouride 6 inches
crystals be maintained in a saturator tank for flows of
less than 100 gpm?
Which disinfectant would work best against Ozone
Cryptosporidium?
Which chemical oxidant would be best to use for D. Potassium permanganate
controlling trihalomethanes formation potential?
A. Chloramines
B. Chlorine dioxide
C. Oxygen
D. Potassium permanganate
Ozone generators A. Must be supplied with extremely dry air
A. Must be supplied with extremely dry air
B. Are usually plate type generators for large plants
C. Will produce 12% ozone by weight when supplied
with air
D. Will produce about 20% ozone by weight when
supplied with oxygen only
If air is used to generate ozone, which percentage of 1% to 3%
the air is usually converted to ozone?
Detention time in flocculation basins are usually 15 to 45 minutes
designed to provide for how many minutes?
Alum works best in a pH range of? 5.8 to 7.0
https://quizlet.com/367535886/water-operator-certification-study-guide-flash-cards/ 2/8
