quiz 9 Flashcards

1
Q

According to EPA, which solid waste management practice is the most preferred?

A

Source reduction and reuse

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2
Q

According to EPA, which solid waste management practice is the least preferred?

A

Landfilling

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3
Q

What are the two main components of the landfill gas?

A

Carbon dioxide and methane

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4
Q

What is a typical BOD5 of a new landfill leachate?

A

10,000 mg/L

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5
Q

Which of the following is NOT a good practice at landfill sites?

A

Locating landfill sites in flood plains

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6
Q

Which of the following parameters is NOT a characteristic of a hazardous waste?

A

settling capacity

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7
Q

What are SUPERFUND sites?

A

Contaminated sites generated before 1980

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8
Q

Which is NOT a recommended approach for treating hazardous waste?

A

Discharge in the municipal sewer system

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9
Q

Which parameter indicates that a hazardous waste may be biodegradable?

A

BOD to COD ratio is close to 1

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10
Q

What is NOT true about neutralization of hazardous wastes?

A

The pH of the treated hazardous waste becomes 0

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11
Q

Which substance is NOT part of the EPA’s Clean Air Act criteria pollutants?

A

carbon dioxide

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12
Q

What are the major sources of carbon monoxide?

A

On-road vehicles

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13
Q

Carbon monoxide is produced by the following process:

A

Incomplete combustion

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14
Q

Acid rain is produced by the following reaction

A

Nitrogen oxide or sulfur oxide reacts with water

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15
Q

Name the primary pollutant-oxidant that is produces in photochemical smog:

A

ozone

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16
Q

What is the basic principle of the cyclone method?

A

centrifugation

17
Q

What chemical is injected in a liquid scrubber for SO2 control?

A

calcium carbonate

18
Q

What does adsorption mean?

A

gas to solid mass transfer

19
Q

Describes an absorption process

A

gas to liquid mass transfer

20
Q

How does air stability affect air pollution?

A

Air stability affects the vertical dispersion of pollutants