Wastewater Treatment Operator Certification Test 4 || || || || || ||
questions with verified detailed answers || || || ||
1 mg/l is the same as 1 part per billion (ppb)
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True or False - correct answer✔✔False (v.1 pg 468)
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A SCADA system is capable of monitoring and controlling equipment from a remote
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location ||
True or False - correct answer✔✔True (v.2 pg 627)
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A Discharge Monitoring Report is typically submitted to the regulatory agency on a daily
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basis
True or False - correct answer✔✔False
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A mechanical seal is used to prevent leaks between the pump casing and shaft.
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True or False - correct answer✔✔True (v.2 pg 356)
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Alkalinity is the capacity of a liquid to neutralize a base.
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True or False - correct answer✔✔False (v.2 pg 813)
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,Typical mixed liquor suspended solids concentration is 1,000 to 4,500 mg/l.
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True or False - correct answer✔✔True (v.2 pg 54)
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Turbidity is caused by suspended matters.
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True or False - correct answer✔✔True (v.2 pg 606)
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Algae is not essential to the successful operation of both aerobic and facultative ponds.
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True or False - correct answer✔✔False (v.1 pg 299)
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The addition of acid and CO2 will lower the pH of wastewater.
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True or False - correct answer✔✔True (v.1 pg 299)
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Hydrogen sulfide will deteriorate concrete structures.
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True or False - correct answer✔✔True (v.1 pg 20)
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The higher the pH, the better the disinfection - correct answer✔✔False (v.1 pg 352)
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Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank.
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True or False - correct answer✔✔False (v.2 pg 53)
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, When the velocity of the wastewater in a clarifier is greater in some sections than others, it
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will lead to short-circuiting.
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True or False - correct answer✔✔True (v.1 pg 135)
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The F/M ratio will decrease when the microorganism population in the aeration tank
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increases.
True or False - correct answer✔✔True (v.2 pg 16)
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Algae growth will be faster when there is less sunlight.
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True or False - correct answer✔✔False (v.1 pg 309)
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The higher the temperature, the more rapid the rate of disinfection.
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True or False - correct answer✔✔True (v.1 pg 352)
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One of the benefits of recirculation for a trickling filter is that it decreases the contact time
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of the wastewater with the biological film.
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True or False - correct answer✔✔False (v.1 pg 175)
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Maintaining a constant temperature in an anaerobic digester is one way to prevent foaming
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from recurring. ||
True or False - correct answer✔✔True (v.2 pg 187)
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questions with verified detailed answers || || || ||
1 mg/l is the same as 1 part per billion (ppb)
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True or False - correct answer✔✔False (v.1 pg 468)
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A SCADA system is capable of monitoring and controlling equipment from a remote
|| || || || || || || || || || || || ||
location ||
True or False - correct answer✔✔True (v.2 pg 627)
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A Discharge Monitoring Report is typically submitted to the regulatory agency on a daily
|| || || || || || || || || || || || || ||
basis
True or False - correct answer✔✔False
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A mechanical seal is used to prevent leaks between the pump casing and shaft.
|| || || || || || || || || || || || ||
True or False - correct answer✔✔True (v.2 pg 356)
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Alkalinity is the capacity of a liquid to neutralize a base.
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True or False - correct answer✔✔False (v.2 pg 813)
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,Typical mixed liquor suspended solids concentration is 1,000 to 4,500 mg/l.
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True or False - correct answer✔✔True (v.2 pg 54)
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Turbidity is caused by suspended matters.
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True or False - correct answer✔✔True (v.2 pg 606)
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Algae is not essential to the successful operation of both aerobic and facultative ponds.
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True or False - correct answer✔✔False (v.1 pg 299)
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The addition of acid and CO2 will lower the pH of wastewater.
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True or False - correct answer✔✔True (v.1 pg 299)
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Hydrogen sulfide will deteriorate concrete structures.
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True or False - correct answer✔✔True (v.1 pg 20)
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The higher the pH, the better the disinfection - correct answer✔✔False (v.1 pg 352)
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Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank.
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True or False - correct answer✔✔False (v.2 pg 53)
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, When the velocity of the wastewater in a clarifier is greater in some sections than others, it
|| || || || || || || || || || || || || || || || ||
will lead to short-circuiting.
|| || || ||
True or False - correct answer✔✔True (v.1 pg 135)
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The F/M ratio will decrease when the microorganism population in the aeration tank
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increases.
True or False - correct answer✔✔True (v.2 pg 16)
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Algae growth will be faster when there is less sunlight.
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True or False - correct answer✔✔False (v.1 pg 309)
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The higher the temperature, the more rapid the rate of disinfection.
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True or False - correct answer✔✔True (v.1 pg 352)
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One of the benefits of recirculation for a trickling filter is that it decreases the contact time
|| || || || || || || || || || || || || || || || ||
of the wastewater with the biological film.
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True or False - correct answer✔✔False (v.1 pg 175)
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Maintaining a constant temperature in an anaerobic digester is one way to prevent foaming
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from recurring. ||
True or False - correct answer✔✔True (v.2 pg 187)
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