Wastewater collections Exam 2025 quizzes & 100%
Correct Answers
What is a unusually strong wastewater discharged from a waste source?
A sock load
The four categories of wastewater characteristics are?
physical, chemical, bacteriological,
and radiological.
The amount of wastewater collected depends on?
economic status, water rates, climate,
infiltration/inflow, and industry.
Physical characteristics are detected by the senses such as?
smell and sight
When anaerobic decomposition begins producing acid and
odorous gases.?
Begins when dissolved oxygen is gone
One mg/L or one ppm is?
one pound of material in a million pounds of water.
Organics are produced by
plants, animals, or humans
, It is not organic and examples are sand, metal, and rock.
"Inorganic"
What is toxic, corrosive, flammable, heavier than air, deadens the sense of
smell, and has a rotten egg odor.
Hydrogen sulfide
What is lighter than air, explosive, colorless, and odorless?
Methane (natural) gas
What Oil and grease in wastewater may cause?
explosion, fires,stoppages and odor
Excessive chlorides interfere with treatment and effect wastewater ____
lab tests
The BOD test indicates the amount of organic matter that can be oxidized by biological and
chemical action in how many days at what temperature ?
5 days at 20°C
Bacteria requiring free, uncombined oxygen are ________.
aerobic
Bacteria requiring combined oxygen are ________.
anaerobic
Bacteria able to metabolize free or combined oxygen are ________.
Correct Answers
What is a unusually strong wastewater discharged from a waste source?
A sock load
The four categories of wastewater characteristics are?
physical, chemical, bacteriological,
and radiological.
The amount of wastewater collected depends on?
economic status, water rates, climate,
infiltration/inflow, and industry.
Physical characteristics are detected by the senses such as?
smell and sight
When anaerobic decomposition begins producing acid and
odorous gases.?
Begins when dissolved oxygen is gone
One mg/L or one ppm is?
one pound of material in a million pounds of water.
Organics are produced by
plants, animals, or humans
, It is not organic and examples are sand, metal, and rock.
"Inorganic"
What is toxic, corrosive, flammable, heavier than air, deadens the sense of
smell, and has a rotten egg odor.
Hydrogen sulfide
What is lighter than air, explosive, colorless, and odorless?
Methane (natural) gas
What Oil and grease in wastewater may cause?
explosion, fires,stoppages and odor
Excessive chlorides interfere with treatment and effect wastewater ____
lab tests
The BOD test indicates the amount of organic matter that can be oxidized by biological and
chemical action in how many days at what temperature ?
5 days at 20°C
Bacteria requiring free, uncombined oxygen are ________.
aerobic
Bacteria requiring combined oxygen are ________.
anaerobic
Bacteria able to metabolize free or combined oxygen are ________.
