Solid Waste Management and Disposal

1
Solid Waste Management and Disposal

• Chapter 18
• Styrofoam is biodegradable, you people just
  arent patient enough!!! (source unknown
  comedian)

2
Outline

• Introduction
• The problem
• Waste around the world
• Types and composition of waste
• Methods
• Landfills old and new
• Waste disposal
• Recycling in NL

3
Waste

• Municipal solid waste (MSW) garbage
• Amount of MSW has increased with time (Fig 18.2)
• Waste increases with affluence (Fig 18.3)

4
Fig. 18.3
5
Waste

• Municipal solid waste garbage
• Amount of MSW has increased over time (Fig 18.2)
• Waste increases with affluence (Fig 18.3)
• Paper is the largest component of the waste
  stream (Fig 18.4)

6
Fig. 18.5
7
Fig. 18.4
8
Waste

• Municipal solid waste garbage
• Amount has increased over time (Fig 18.2)
• Waste increases with affluence (Fig 18.3)
• Paper is the largest component of the waste
  stream (Fig 18.4)
• Waste Disposal has changed over time (Fig 18.7)

9
Fig. 18.7
10
Landfills old and new

• Old landfills dumps
• Garbage burned
• Pollutants were not dealt with
• Modern waste disposal
• Landfills, incineration, source reduction,
  composting, and recycling
• Modern Landfill
• NIMBY

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Fig. 18.8
12
Incineration

• Historical/current
• Incineration common prior to 1940
• 8 (16) of waste is burned in Canada (US )
• Problems aesthetics/health
• Modern
• Mass burn energy to generate electricity
• Reduction in volume and weight of waste
• Dependent on waste composition

13
Composting

• Remember, little things rule the world!!!
• Compost
• Various methods (see text)
• Benefits
• Reduce waste in landfill
• Improve porosity of soil
• Increase gas exchange
• Increase nutrients

14
Source Reduction

• Source reduction waste prevention
• Pop bottle
• 1977 68 g
• Current 51 g
• Translates to 114 million kg of plastic/year
• Pay for your garbage??

15
Recycling

• Reduction in waste
• 54 million tonnes/year
• Curbside recycling and containers
• Benefits
• Reduce waste
• Less extraction of resource
• Problems
• Different types of plastics
• Demand for recycled materials

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Recycling in NL

• For curbside recycling and more recycling
  facilities
• http//www.petitiononline.com/nfld001/petition.htm
  l