Solid Waste - PowerPoint PPT Presentation

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Solid Waste

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Solid Waste Waste Disposal Municipal solid waste waste materials from homes, businesses and other parts of the community Other solid waste comes from construction ... – PowerPoint PPT presentation

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Title: Solid Waste


1
Solid Waste
2
Waste Disposal
  • Municipal solid wastewaste materials from homes,
    businesses and other parts of the community
  • Other solid waste comes from construction debris
    and certain agricultural and industrial wastes.

3
Waste Disposal
  • Three methods of handling solid waste
  • Bury it
  • Burn it
  • Recycle it

4
Waste Disposal
  • Landfills
  • Open dumps were used until relatively recently.
    (1976)
  • Leachate is a polluted liquid made when rainwater
    dissolves chemicals
  • Sanitary landfills hold municipal solid waste,
    construction debris, and some types of
    agricultural and industrial waste
  • They have plastic liners and are capped with clay
    to prevent rainwater from entering.

5
Waste Disposal
  • Incineration
  • Burning of solid waste
  • Do not take up much space
  • Do not pose a risk of polluting groundwater
  • Waste-to-energy plants
  • Use heat to produce electricity
  • Release some pollution into the air
  • Some waste still remains
  • More expensive to build

6
Recycling
  • Biodegradable
  • A substance that can be broken down and recycled
    by bacteria

7
Recycling
  • Metals
  • Iron and aluminum can be melted and reused
  • Glass
  • Melted to make new glass containers, fiberglass,
    bricks, tiles and reflective paints

8
Recycling
  • Paper
  • Pulp is a thick liquid made from wood, and
    recycled paper can be turned into pulp, also
  • Plastic
  • Made from resins left over from petroleum
    products
  • Can be heated, stretched, and molded into plastic
    products

9
Solid Waste Management
  • Reduce
  • Reuse
  • Recycle
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