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Chapter 24 Solid and Hazardous Wastes

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Chapter 24 Solid and Hazardous Wastes * * * * * * * * * * * Chemical accidents National Response Center notified Typically involves oil, gasoline or other petroleum ... – PowerPoint PPT presentation

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Title: Chapter 24 Solid and Hazardous Wastes


1
Chapter 24 Solid and Hazardous Wastes
2
Types of Solid Waste
Municipal Solid Waste
  • Municipal solid waste
  • Relatively small portion of solid waste produced
  • Non-municipal solid waste
  • waste from industry, agriculture, and mining

3
Disposal of Solid Waste
  • Three methods
  • Sanitary Landfills
  • Incineration
  • Recycling

4
Sanitary Landfill

5
Sanitary Landfill
  • Problems
  • Methane gas
  • Contamination of surface ground water
  • Not a long-term remedy
  • Few new facilities being opened
  • Closing a full landfill is very expensive

6
Sanitary Landfill
  • Special Problem Plastic

300 million tires are scrapped or dumped per year!
  • Special Problem Tires
  • cannot be recycled
  • Can be incinerated or shredded

7
Incineration
  • Pros
  • Volume of solid waste reduced by 90
  • Produces heat that can make steam to generate
    electricity
  • Produce less carbon emissions than fossil fuel
    power plants
  • Cons
  • Byproduct
  • ash

8
Waste Prevention
  • Three Goals (The 3 Rs)
  • (1) REDUCE the amount of waste
  • (2) Reuse products
  • (3) Recycle materials

9
Composting
  • Reduces yard waste in landfills
  • Can be sold or distributed to community

10
Reducing Waste
  • Purchase products with less packaging

11
Reusing Products
  • Refilling glass beverage bottles
  • Japan recycles almost all bottles
  • Reused 20 times

12
Recycling Materials
  • Every ton of recycled paper saves
  • 17 trees
  • 7000 gallons of water
  • 4100 kwatt-hrs of energy
  • 3 cubic yards of landfill space
  • Recycle
  • Glass bottles, newspapers, steel cans, plastic
    bottles, cardboard, office paper

13
Recycling
  • Recycling Paper
  • US recycles 50
  • Many developed countries are higher
  • Recycling Glass
  • US recycles 25
  • Costs less than new glass

14
Recycling
  • Recycling Aluminum
  • Making new can from recycled one costs far less
    than making a brand new one
  • 49 of Al recycled in 2007
  • Recycling Plastic
  • Less expensive to make from raw materials

15
Recycling
  • Recycling Tires
  • Playground equipment
  • Trashcans
  • Garden hose
  • Carpet
  • Roofing materials
  • 36 of tires are currently recycled to make other
    products

16
Integrated Waste Management

17
Hazardous Waste
  • Any discarded chemical that threatens human
    health or the environment
  • Reactive, corrosive, explosive or toxic chemicals
  • Types of Hazardous Waste
  • Dioxins
  • PCBs
  • Radioactive waste

Love Canal Toxic Waste Site
18
Hazardous Waste

19
Case-In-Point Hanford Nuclear Reservation

20
Superfund Program-Must be cleaned up
  • Cleaning up existing hazardous waste
  • 400,000 waste sites


http//www.usc.edu/org/cosee-west/Jun07Resources/0
7Waiting20for20the20DDT20tide20to20turn.pdf
21
Management of Hazardous Waste
  • Superfund National Priorities List
  • 2009 1,264 sites on the list
  • States with the greatest number of sites
  • New Jersey (114)
  • California (94)
  • Pennsylvania (94)
  • New York (85)
  • Michigan (65)

We have Superfund sights in Maywood, Torrance.
22
Management of Hazardous Waste
  • Biological Treatment of Hazardous Chemicals
  • Bioremediation -
  • Time consuming
  • Phytoremediation


23
Management of Hazardous Waste
  • (1) Source reduction
  • (2) Conversion to less hazardous materials
  • (3) Long-term storage

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