Operation of Wastewater Treatment Plants, Volume I , 7th Edition| 292 questions| with complete solutions
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Course
Operation of Wastewater Treatment Plants
Institution
Liberty University
The Treatment Plant Operator
As an operator, you are responsible to your employer for maintaining an economical and efficient operating facility. T or F Correct Answer: True
An operator has an obligation to the great numbers of people who rely on downstream water supplies and are totally de...
7th edition| 292 questions| with complete solutions
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Liberty University
Operation of Wastewater Treatment Plants
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Operation of Wastewater Treatment Plants, Volume I , 7th
Edition| 292 questions| with complete solutions
The Treatment Plant Operator
As an operator, you are responsible to your employer for maintaining an economical and
efficient operating facility. T or F Correct Answer: True
An operator has an obligation to the great numbers of people who rely on downstream water
supplies and are totally dependent on the operator's competence and trustworthiness for their
welfare. T or F Correct Answer: True
Today, the natural purification processes in rivers treat all the waste loads and keep rivers clean.
T or F Correct Answer: False
Operators are water quality protectors on the front line of the water pollution battle. Correct
Answer: True
The main benefit of a successful wastewater treatment program is the protection of public health.
T or F Correct Answer: True
Without adequate, reliable records of every phase of operation, the effectiveness of your
operation has not been documented (recorded) T or F Correct Answer: True
Your records showing a high-quality effluent will mean nothing to citizens visiting your plant
unless your plant appears clean and well maintained and the effluent looks good. T or F Correct
Answer: True
Safety is never an operator responsibility. T or F Correct Answer: False
Chief operators frequently have the responsibility of training new operators and must encourage
all operators to work safely. T or F Correct Answer: True
The wastewater treatment field is changing rapidly and operators, maintenance personnel,
foreman, managers, instrumentation experts, and laboratory technicians are sorely needed. T or F
Correct Answer: True
What is a treatment plant operator?
1. The contact for media and regulatory agencies
2. The final and essential link in maintaining and protecting the aquatic environment upon which
all life depends
3. The operator who coordinates the efforts of designers and builders
4. The person responsible for keeping expenditures within budget Correct Answer: (2)The final
essential link in maintaining and protecting the aquatic environment upon which all life depends
,Why are wastewater treatment plants built?
1. To divert polluted water from a community
2. To occupy space alongside rivers
3. To provide opportunities for designers and builders to display their skills
4. To purify soiled water and prevent water pollution Correct Answer: (4)To purify soiled water
and prevent water pollution
How should wastewater treatment plant operators consider their job?
1. As a colleague of other wastewater plant employees
2. As a regularly paid wastewater plant employee
3. As a secure position with the plant
4. As a water quality protector on the front line of the water pollution control battle Correct
Answer: (4)As a water quality protector on the front line of the water pollution control battle
What is the primary objective of an operator operating a wastewater treatment plant?
1. To achieve the highest level of certification possible
2. To convince the public that the operators deserve top pay
3. To keep the sewer-user charges as low as possible
4. To protect the receiving water quality by continuous and efficient plant performance Correct
Answer: (4)To protect the receiving water quality by continuous and efficient plant performance
How can a well-guided tour for other operators help an operators?
1. May allow the other operators to suggest helpful solutions to operational problems
2. May convince the other operators to suggest better employment opportunities
3. May develop long-lasting friendships
4. May reveal good fishing opportunities Correct Answer: (1)May allow the other operators to
suggest helpful solutions to operational
What types of employers might a wastewater treatment plant operators work for?
1. A city, sanitation district or other public agency
2. A company that transports collected samples to a laboratory for analysis
3. A large industry that operates its own treatment plant
4. A private contractor retained to operate and maintain a municipal or industrial treatment plant
5. An agency that collects delinquent sewer-user service charges Correct Answer: 1,3,4
Why do wastewater treatment plant operators need continuous training? Due to ______?
1. Advanced or improved equipment
2. Increasing budgets
3. Increasing instrumentation
4. More facility tours
5. New treatment techniques Correct Answer: 1, 3, 5
Why should an operator be present or at least available during the construction period of a new
plant?
1. To become familiat with the entire plant, including the equipment and machinery and their
operation.
,2. To discuss with the engineer how the treatment plant should best be run
3. To ensure that the contractor stays within the budget
4. To observe how the contractor's enployees perform their tasks
5. To relate the plant drawing to actual facilities Correct Answer: 1, 2, 5
Operators are in the field of public relations and must be able to explain the purpose and
operation of their plant to which groups?
1. City council or directors of the plant
2. Civic organizations
3. Officials of regulatory agencies
4. Representatives of news media
5. School classes Correct Answer: All
Which factors are contributing to the increasing need for trained wastewater treatment plant
operators?
1. More sophisticated treatment
2. Operator certification regulations
3. Population growth
4. Regulatory requirements
5. Retirement of many current operators Correct Answer: All
Chapter 2: Why Treat Wastes? Correct Answer:
All organic materials have one thing in common- they all contain basic minerals. T or F Correct
Answer: -False
Most living creatures need oxygen to survive, including fish and other aquatic life. T or F
Correct Answer: -True
Initial efforts to control human wastes evolved from the need to prevent the spread of diseases. T
or F Correct Answer: -True
The bacteria that grow in the intestinal tract of diseased humans find the environment in the
wastewater treatment plant or receiving waters favorable for their growth and reproduction. T or
F Correct Answer: -False (NOT likely)
One of the primary functions of a treatment plant is the removal of solids from wastewater. T or
F Correct Answer: -True
Operators try to kill or inactivate pathogenic organism by disinfection. T or F Correct Answer: -
True
The weight of nonsettleable solids may be calculated by subtracting the weight of dissolved and
total solids from the weight of settleable solids. T or F Correct Answer: -False (Nonsettleable
solids = subtracting the weight of dissolved and settleable solids from the weight of the TOTAL)
, The organic portion of the total solids can be very harmful to receiving waters. T or F Correct
Answer: -True
Operators should use a standard method for the measurement and evaluation of floatable solids.
T or F Correct Answer: -False (There is no standard method for the measurement and evaluation
of floatable solids)
Nutrient cycles are very complex and involve chemical changes in living organisms. T or F
Correct Answer: -True
What is the definition of pollution?
1. Any discharge of waste to a body of water
2. Any interference with the beneficial reuse of water
3. Any substance that is toxic or hazardous
4. Anything that is abvious or unsightly Correct Answer: Any interference with the beneficial
reuse of water
What is an organic waste?
1. Waste material such as sand, salt, iron, or calcium
2. Waste material that may come from animal or plant sources
3. Wastes that could come from hospitals, research laboratories, and nuclear power plants
4. Wastewaters that may come from cooling processes used by industry Correct Answer: Waste
material that may come from animal or plant sources
What is an inorganic waste?
1. Waste material such as sand, salt, iron, or calcium
2. Waste material that may come from animal or plant sources
3. Wastes that could come from hospitals, research laboratories, and nuclear power plants
4. Wastewaters that may come from cooling processes used by industry Correct Answer: Waste
material such as sand, salt, iron, or calcium
What happens to fish in receiving waters when bacteria use the entire supply of oxygen from the
stream faster than it can be replenished by natural diffusion from the atmosphere?
1. They become agitated
2. They die
3. The feed
4. They reproduce Correct Answer: They die
The stabilization of a waste means which of the following?
1. To convert the waste to a form that resists change
2. To flatten the waste
3. To remove all food for bacteria
4. To shrink the waste Correct Answer: To convert the waste to a form that resist change
Many serious outbreaks of communicable diseases have been traced to which problems?
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