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Solid Waste Disposal

Solid Waste Disposal. How do we get rid of garbage?. Open dumping (ground or water) Landfill Incineration Recycling. Increasing Desirability. Open Dumping. Advantages. Disadvantages. Water + Soil Pollution Health Hazard Hurts Animals UGLY!. Convenient Cheap. Landfill. Advantages.

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Solid Waste Disposal

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  1. Solid Waste Disposal

  2. How do we get rid of garbage? • Open dumping (ground or water) • Landfill • Incineration • Recycling Increasing Desirability

  3. Open Dumping Advantages Disadvantages Water + Soil Pollution Health Hazard Hurts Animals UGLY! • Convenient • Cheap

  4. Landfill Advantages Disadvantages People don’t want to live near them Transport of waste Maintenance Poor decomposition rate Possible leaching into water systems Produces Methane • Efficient way to deal with large volume • Filled land can be used… • Can create energy • CH4 produced can be burned • Carbon-offsets @ Knott

  5. Incineration Advantages Disadvantages Expensive Can Cause Release of Pollutants (Dioxins) Requires Energy CO2 + NO2… • Reduces Volume • Minimal Space • Stable Residue • Energy Source?

  6. Special Case: Nuclear Waste Issues: How we are dealing with it Low level= landfill/incineration High level= Stored @ the site in pools and then concrete bunkers Future = burying at Yucca Mountain, NV? Trying to develop a recycling method. Reprocessing already active in UK + France • Low level= hospitals… • High level (small amounts)= spent fuel. Metal rods contain ceramics + radioactive isotopes • Stays active (lethal, actually) for 1000s of years • Transportation to long term facility • Terrorism danger http://www.whatisnuclear.com/articles/waste.html http://www.nei.org/keyissues/nuclearwastedisposal/

  7. Recycling Advantages Disadvantages Expensive (transport, sorting, cleaning, repurposing) • Less Waste • Less Pollution (than creating new materials) • Less Energy Use (than creating new materials)

  8. Recycling- Paper • Sorted • Washed • Slurry • Re-pressed

  9. Recycling- Metals (mainly Al and Fe) • Sorted • Melted • Reused • Bam

  10. Recycling- Glass • Sorted • Washed • Crushed • Melted • Molded • (can be recycled multiple times)

  11. Recycling- Plastic • Sorted • Degraded with heat/hydrogenation/cracking • Repolymerized • Reformed Link to ppt from Alyssa Here!

  12. Zero Waste Family

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