quiz 9 Flashcards
(20 cards)
According to EPA, which solid waste management practice is the most preferred?
Source reduction and reuse
According to EPA, which solid waste management practice is the least preferred?
Landfilling
What are the two main components of the landfill gas?
Carbon dioxide and methane
What is a typical BOD5 of a new landfill leachate?
10,000 mg/L
Which of the following is NOT a good practice at landfill sites?
Locating landfill sites in flood plains
Which of the following parameters is NOT a characteristic of a hazardous waste?
settling capacity
What are SUPERFUND sites?
Contaminated sites generated before 1980
Which is NOT a recommended approach for treating hazardous waste?
Discharge in the municipal sewer system
Which parameter indicates that a hazardous waste may be biodegradable?
BOD to COD ratio is close to 1
What is NOT true about neutralization of hazardous wastes?
The pH of the treated hazardous waste becomes 0
Which substance is NOT part of the EPA’s Clean Air Act criteria pollutants?
carbon dioxide
What are the major sources of carbon monoxide?
On-road vehicles
Carbon monoxide is produced by the following process:
Incomplete combustion
Acid rain is produced by the following reaction
Nitrogen oxide or sulfur oxide reacts with water
Name the primary pollutant-oxidant that is produces in photochemical smog:
ozone
What is the basic principle of the cyclone method?
centrifugation
What chemical is injected in a liquid scrubber for SO2 control?
calcium carbonate
What does adsorption mean?
gas to solid mass transfer
Describes an absorption process
gas to liquid mass transfer
How does air stability affect air pollution?
Air stability affects the vertical dispersion of pollutants
