wastewater treatment practice exam questions with verified || || || || || || ||
detailed solutions ||
Odors occur when treatment becomes - correct answer✔✔Anaerobic
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What should an operator do before entering a manhole - correct answer✔✔Test for all
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hazardous gases and oxygen levels and ventilate the manhole before entering
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What treatment devices is commonly used to separate and remove large solids from raw
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wastewater - correct answer✔✔a mechanically raked bar screen
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What diseases are caused by pathogenic organisms that may be present in raw wastewater? -
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correct answer✔✔Hepatitis, typhoid, paratyphoid, dysentery, and cholera
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What is typically used to dewater sludge? - correct answer✔✔Belt press, Drying beds, solid
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bowl centrifuge, and gravity thickener
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Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet
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wide and 20 feet deep - correct answer✔✔269,280
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What is typically used whenever wastewater cannot flow to the treatment plant by gravity -
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correct answer✔✔Lift station || ||
A centrifugal pump must be ? or it will not pump - correct answer✔✔Primed
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One common type of weir design for measuring flow is - correct answer✔✔V-Knotch
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detailed solutions ||
Odors occur when treatment becomes - correct answer✔✔Anaerobic
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What should an operator do before entering a manhole - correct answer✔✔Test for all
|| || || || || || || || || || || || || ||
hazardous gases and oxygen levels and ventilate the manhole before entering
|| || || || || || || || || ||
What treatment devices is commonly used to separate and remove large solids from raw
|| || || || || || || || || || || || || ||
wastewater - correct answer✔✔a mechanically raked bar screen
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What diseases are caused by pathogenic organisms that may be present in raw wastewater? -
|| || || || || || || || || || || || || ||
correct answer✔✔Hepatitis, typhoid, paratyphoid, dysentery, and cholera
|| || || || || || ||
What is typically used to dewater sludge? - correct answer✔✔Belt press, Drying beds, solid
|| || || || || || || || || || || || || ||
bowl centrifuge, and gravity thickener
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Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet
|| || || || || || || || || || || || || || || || ||
wide and 20 feet deep - correct answer✔✔269,280
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What is typically used whenever wastewater cannot flow to the treatment plant by gravity -
|| || || || || || || || || || || || || || ||
correct answer✔✔Lift station || ||
A centrifugal pump must be ? or it will not pump - correct answer✔✔Primed
|| || || || || || || || || || || || ||
One common type of weir design for measuring flow is - correct answer✔✔V-Knotch
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