The Geology of Landfills By: Slayton Hazard-Daniel [email_address] USM-LIS 201  April 25th, 2011
What is a landfill? <ul><li>Carefully engineered area in the ground </li></ul><ul><li>Man-made construction or erosion of ...
Four Essential Parts of a Landfill <ul><li>Bottom liner-  separates trash and subsequent leachate from groundwater </li></...
Four Essential Parts of a Landfill <ul><li>Cover-  seals off the top of the landfill </li></ul><ul><li>Natural hydrogeolog...
Success of a Landfill <ul><li>Location is key </li></ul><ul><li>Must be as far from a major water supply as possible </li>...
Three Main Types of Waste <ul><li>Construction- makes up 40% of total waste </li></ul><ul><li>Household- makes up 26% of t...
Types of Waste <ul><li>Examples: </li></ul><ul><ul><li>Textiles </li></ul></ul><ul><ul><li>Metal </li></ul></ul><ul><ul><l...
Impact on the Environment <ul><li>Landfills have a huge impact on rivers, streams, and lakes. </li></ul><ul><li>Because of...
Please recycle.
Thank you for your attention. Are there any questions?
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The Geology of Landfills

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The Geology of Landfills

  1. 1. The Geology of Landfills By: Slayton Hazard-Daniel [email_address] USM-LIS 201 April 25th, 2011
  2. 2. What is a landfill? <ul><li>Carefully engineered area in the ground </li></ul><ul><li>Man-made construction or erosion of the Earth </li></ul><ul><li>Different shapes and sizes </li></ul><ul><li>Objective is to fill with wastes </li></ul><ul><li>Main goal is to keep hydraulic connection between wastes and surrounding environment </li></ul>
  3. 3. Four Essential Parts of a Landfill <ul><li>Bottom liner- separates trash and subsequent leachate from groundwater </li></ul><ul><li>Leachate collection system- collects water that has percolated through the landfill itself and contains contaminating substances (leachate) </li></ul>A leachate collection pond
  4. 4. Four Essential Parts of a Landfill <ul><li>Cover- seals off the top of the landfill </li></ul><ul><li>Natural hydrogeologic setting- the area in which a landfill is located must be simple and waterproof to prevent wastes from escaping </li></ul>An experimental tarp cover
  5. 5. Success of a Landfill <ul><li>Location is key </li></ul><ul><li>Must be as far from a major water supply as possible </li></ul><ul><li>Correct soil consistency </li></ul><ul><li>If the location is good, the erosion of the layers of the landfill will take decades. </li></ul>
  6. 6. Three Main Types of Waste <ul><li>Construction- makes up 40% of total waste </li></ul><ul><li>Household- makes up 26% of total waste </li></ul><ul><li>Industrial- makes up 34% of total waste </li></ul>
  7. 7. Types of Waste <ul><li>Examples: </li></ul><ul><ul><li>Textiles </li></ul></ul><ul><ul><li>Metal </li></ul></ul><ul><ul><li>Glass </li></ul></ul><ul><ul><li>Organic wastes </li></ul></ul>
  8. 8. Impact on the Environment <ul><li>Landfills have a huge impact on rivers, streams, and lakes. </li></ul><ul><li>Because of rain, landfills produce toxic runoff that can harm these important water sources. </li></ul>
  9. 9. Please recycle.
  10. 10. Thank you for your attention. Are there any questions?

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