Chapter 17 Flashcards
1
Q
solid waste
A
objects or particles which accumulate where they are produced
2
Q
mining waste
A
includes removed rock and soil, tailings, contaminated water
3
Q
agricultural waste
A
from livestock, harvesting, and processing of crops and trees
4
Q
types of solid waste (2)
A
- industrial solid waste
2. municipal solid waste
5
Q
industrial solid waste
A
- demolition waste
- manufacturing waste
- sludge
- combustion ash
6
Q
municipal solid waste
A
- households
- commercial establishments
- institutions
- industrial sources
7
Q
US waste generation
A
- produces 220 million metric tons of MSW annually
- 4.4 pounds per person per day
8
Q
disposal of MSW (5)
A
- landfills
- incineration
- mulch and compost
- source reduction
- recycling
9
Q
incineration
A
- 15% of MSW is incinerated in the US
- most use heat to generate electricity
benefits: reduces amount of MSW and reliance on landfills
risks: emissions, disposal of toxic ash, cost
10
Q
mulch and compost
A
benefits:
- reduces amount of MSW and reliance on landfills
- mulch and compost are beneficial for soils
11
Q
source reduction
A
reducing waste production
12
Q
aspects of source reduction (5)
A
- design
- manufacturing process
- purchasing decisions
- material use
- reusing materials
13
Q
recycling
A
-recycling and composting diverted 32% of solid waste from waste stream
14
Q
benefits of recycling (5)
A
- resource conservation
- reduced pollutants
- energy savings
- job creation
- reduced strain on landfills
