All organic materials have one thing in common, they all contain basic minerals.
A. True
B. False
What is (B) False
All organic materials have one thing in common, they all contain carbon.
What is an inorganic waste?
A. waste material such as sand, salt, iron, or calcium
B. waste material that may come from animal or plant sources.
C. wastes that could come from hospitals, research laboratories, and nuclear power plants.
D. Wastewater that may come from cooling processes used by industry.
What is (A)
Waste material such as sand, salt, iron, or calcium
These bacteria live and reproduce only in an environment containing oxygen that is available for their respiration.
A. Anaerobic
B. Aerobic
C. Facultative
D. Filamentous
What is (B)
Aerobic Bacteria
Four types of pollution are:
A. organic, inorganic, thermal, radioactive
B. organic, anaerobic, facultative, digestive
C. inorganic, thermal, algae, grit
D. anaerobic, aerobic, facultative, anoxic
What is (A)
organic, inorganic, thermal, radioactive
This heavy material present in wastewater such as sand, coffee grounds, eggshells, gravel, and cinders. Has two names:
A. Grit
B. Algae
C. Organics
D. Anaerobic Sludge
What is (A)
Grit, also called detritus.
One of the primary functions of a treatment plant is the removal of solids from wastewater.
A. True
B. False
What is (A) True
The stabilization of waste means which of the following?
A. to convert the waste to a form that resist change
B. To flatten the waste
C. To remove all food for bacteria
D. To shrink the waste
What is (A)
To convert the waste to a form that resists change
A group of bacteria found in the intestines of warm blooded animals and also in plants, soil, air, and water. Their presence is an indication the water is polluted.
A. Filamentous
B. Stalked Ciliates
C. Coliform
D. Water bears
what is (C)
Coliform Bacteria
This gas has a rotten egg smell at low doses and is undetectable at high doses. It causes damage to metal and concrete.
A. Hydrogen Oxide
B. Sulfur Dioxide
C. Hydrogen sulfide
D. Nitrogen
What is (C)
Hydrogen Sulfide
A sewer designed to carry both sanitary wastewater and stormwater or surface water runoff.
A. Combined sewer
B. Storm sewer
C. Sanitary sewer
D. Secondary sewer
what is (A)
Combined sewer
Operators try to kill or inactivate pathogenic organisms by sterilization.
A. True
B. False
What is (B) false.
Operators try to kill or inactivate pathogenic organisms by disinfection.
What is an operators best defense against infections and diseases?
A. Good personal hygiene
B. personal protective equipment
C. regular physical examinations
D. use of detergents.
What is (A)
Good personal hygiene
What are sludge particles produced in raw or settled wastewater (primary effluent) by the growth of organisms in aeration basin in the presence of oxygen?
What is activated sludge?
When ____ cycles become disrupted and there is no dissolved oxygen in the receiving water, these waters become septic, stink, and look terrible.
A. Oxygen Cycles
B. Nutrient Cycles
C. Atmospheric Cycles
D. Water Cycles
What is (B)
Nutrient cycles
The material in a trickling filter on which slime accumulates and organisms grow.
A. Zoogleal rock
B. Media
C. Humus
D. Supernatant
what is (B)
Media
Can be rock, plastic, wood
What is the definition of pollution?
A. any discharge of waste to a body of water
B. any interference with the beneficial reuse of water
C. any substance that is toxic or hazardous
D. anything that is odorous or unsightly.
What is (B)
Any interference with the beneficial reuse of water
Why are floatable solids undesirable in the plant effluent?
A. color of floatable presents a colorful appearance
B. floatable tend to cause tastes in fish
C. odors produced by floatable smell like rotten eggs
D. the sight of floatable in receiving waters indicates the presence of inadequately treated wastewater.
What is (D)
the sight of floatable in receiving waters indicates the presence of inadequately treated wastewater.
The removal or destruction of all microorganisms, including pathogens and other bacteria.
A. Disinfection
B. Sterilization
C. Transpiration
D. Pollution
what is (B)
Sterilization
This liquid is removed from settled sludge. It is commonly referred to as the liquid between the sludge on the bottom and the scum on the surface of an anaerobic digester.
A. Zoogleal mass
B. Humus
C. Supernatant
D. Influent
What is (C)
Supernatant
Both trickling filter and the activated sludge treatment processes are anaerobic biological treatment processes.
A. True
B. False
What is (B)
False
Trickling filter and activated sludge treatment processes are aerobic biological treatment processes.
What is organic waste?
A. Waste material such as sand, salt, iron, or calcium
B. waste material that may come from animal or plant sources.
C. wastes that could come from hospitals, research laboratories, and nuclear power plants.
What is (B)
Waste material that may come from animal or plant sources.
What is the objection to treated wastewater containing nutrients?
A. nutrients act as fertilizer in crop irrigation water
B. nutrients are capable of encouraging excess algae and plant growth in receiving waters
C. nutrients create extreme pH levels
D. nutrients produce tastes and odors in drinking water
What is (B)
nutrients are capable of encouraging excess algae and plant growth in receiving waters.
Bacteria, viruses, cysts, or protozoa that can cause diseases (typhoid, cholera, dysentery)in a host such as a person.
A. Pathogenic
B. Coliform
C. Filamentous
D. Algae
What is (A)
(Pathogenic)
The most common type of pond in current use. The upper portion is aerobic while the bottom layer is anaerobic. Algae supplies most oxygen.
A. Facultative
B. Anaerobic
C. Aerobic
D. Storm
What is (A)
Facultative
Algae in ponds produce oxygen for the other organisms to use.
A. True
B. False
What is (A)
True
Algae and other plant life growth through photosynthesis.