WASTE WATER GRADE 2 NEWEST 2025 ACTUAL

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WASTE WATER GRADE 2 NEWEST 2025 ACTUAL

EXAM COMPLETE 80 QUESTIONS AND

CORRECT DETAILED ANSWERS (VERIFIED

ANSWERS) |ALREADY GRADED A+ ||BRAND

NEW!!

After the final clarifier, wastewater is sent to the contact tanks

for:

• Removal of urea
• Removal of Ammonia
• Removal of suspended solids
• Disinfection with chlorine/bleach - CORRECT ANSWER -

Disinfection with chlorine/bleach

A goal of coagulation, flocculation, and sedimentation is to

• Inactivate pathogens
• Remove bad tastes, odors, and colors
• Remove flocculated impurities - CORRECT ANSWER -

Remove bad tastes, odors, and colors 1 / 3

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reduce turbidity

A goal of filtration is to:

• Remove flocculated impurities
• Remove bad tastes, odors and colors
• Inactivate pathogens - CORRECT ANSWER -Remove

flocculated impurities

The goal of disinfection is to:

• Remove bad tastes, odors, and colors
• Remove flocculated impurities
• Inactivate pathogens - CORRECT ANSWER -Inactivate

pathogens

UV and ozone are considered secondary disinfectants because:

• They produce a residual disinfectant
• They are carried through the distribution piping and disinfect

along the way

• They are used in corrosion control
• They do not produce a residual disinfectant - CORRECT

ANSWER-They do not produce a residual disinfectant 2 / 3

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Ammonia reacts with chlorine to form:

• Corrosion inhibitors
• Manganese
• Chloramines
• Flocs - CORRECT ANSWER -Chloramines

Chloramines are useful in drinking water treatment because

they:

• Maintain a disinfectant residual through the distribution

system

• Control corrosion of distribution piping
• React with impurities to form flocs
• Are easily filtered out during the filtration process -

CORRECT ANSWER -Maintain a disinfectant residual through the distribution system

The primary chemical contaminant in groundwater in the Eau

Claire well field is:

• Nickel
• VOCs
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