Wastewater treatment exam 1 with verified detailed || || || || || || ||
answers
What treatment tends to focus on particle removal - correct answer✔✔surface water
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MIB is a common taste and odor compound that smells like - correct answer✔✔earth
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What solids are commonly used as a surrogate for biomass concentration - correct
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answer✔✔volatile
A typical influent nitrogen concentration to a municipal wastewater treatment plant is on
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the order of - correct answer✔✔40 mg/L as N.
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what is the oxygen demand that has been exerted in a 5‐d incubation. - correct
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answer✔✔BOD5
A grit chamber is a settling basin that primarily removes particles with high/low density. -
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correct answer✔✔high ||
A dry solids sample is placed in a muffle furnace at 550 oC, which combusts volatile/non‐
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volatilesolids. - correct answer✔✔volatile || || ||
You measure the turbidity from Waller Creek and the turbidity from Lady Bird Lake, and
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both are 3 NTU. This means that both waters have the same concentration of particles (# of
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particles/volume of water). True/False - correct answer✔✔false || || || || || ||
For an upflow and a horizontal flow clarifier, v*=vOR. True/False - correct answer✔✔true
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, For an upflow clarifier, a particle that has v<vORwill have 0%/100%/fractionalremoval. -
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correct answer✔✔0% ||
Particles following Type I sedimentation have a straight-line/curvedtrajectory. - correct
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answer✔✔straight line ||
Particle settling is a physical/biologicalprocess. - correct answer✔✔physical
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In type I sedimentation in a horizontal-flow settler, a particle has a
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straight/curvedtrajectory. - correct answer✔✔straight || || ||
The term "overflow rate" applies to both upflow and horizontal-flow sedimentation basins.
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True/False - correct answer✔✔true || || ||
Flocculant settling refers to Type I/Type IIsedimentation. - correct answer✔✔type 2
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In Type II sedimentation, the vertical settling velocity for an influent particle tends to
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increase/decreaseas it settles. - correct answer✔✔increase || || || || ||
Total suspended solids is a parameter that is more typically measured for wastewater than
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for drinking water. - correct answer✔✔true
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In a reduction reaction, which of the following statements are true? (Select all correct
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answers.) - correct answer✔✔electrons are consumed || || || || ||
Which of the following assays are abiotic (non-biological) in nature? (Choose all correct
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answers.) - correct answer✔✔COD TOC || || || ||
answers
What treatment tends to focus on particle removal - correct answer✔✔surface water
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MIB is a common taste and odor compound that smells like - correct answer✔✔earth
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What solids are commonly used as a surrogate for biomass concentration - correct
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answer✔✔volatile
A typical influent nitrogen concentration to a municipal wastewater treatment plant is on
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the order of - correct answer✔✔40 mg/L as N.
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what is the oxygen demand that has been exerted in a 5‐d incubation. - correct
|| || || || || || || || || || || || || || ||
answer✔✔BOD5
A grit chamber is a settling basin that primarily removes particles with high/low density. -
|| || || || || || || || || || || || || || ||
correct answer✔✔high ||
A dry solids sample is placed in a muffle furnace at 550 oC, which combusts volatile/non‐
|| || || || || || || || || || || || || || ||
volatilesolids. - correct answer✔✔volatile || || ||
You measure the turbidity from Waller Creek and the turbidity from Lady Bird Lake, and
|| || || || || || || || || || || || || || ||
both are 3 NTU. This means that both waters have the same concentration of particles (# of
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particles/volume of water). True/False - correct answer✔✔false || || || || || ||
For an upflow and a horizontal flow clarifier, v*=vOR. True/False - correct answer✔✔true
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, For an upflow clarifier, a particle that has v<vORwill have 0%/100%/fractionalremoval. -
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correct answer✔✔0% ||
Particles following Type I sedimentation have a straight-line/curvedtrajectory. - correct
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answer✔✔straight line ||
Particle settling is a physical/biologicalprocess. - correct answer✔✔physical
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In type I sedimentation in a horizontal-flow settler, a particle has a
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straight/curvedtrajectory. - correct answer✔✔straight || || ||
The term "overflow rate" applies to both upflow and horizontal-flow sedimentation basins.
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True/False - correct answer✔✔true || || ||
Flocculant settling refers to Type I/Type IIsedimentation. - correct answer✔✔type 2
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In Type II sedimentation, the vertical settling velocity for an influent particle tends to
|| || || || || || || || || || || || || ||
increase/decreaseas it settles. - correct answer✔✔increase || || || || ||
Total suspended solids is a parameter that is more typically measured for wastewater than
|| || || || || || || || || || || || || ||
for drinking water. - correct answer✔✔true
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In a reduction reaction, which of the following statements are true? (Select all correct
|| || || || || || || || || || || || || ||
answers.) - correct answer✔✔electrons are consumed || || || || ||
Which of the following assays are abiotic (non-biological) in nature? (Choose all correct
|| || || || || || || || || || || || ||
answers.) - correct answer✔✔COD TOC || || || ||
