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The Geology of LandfillsThe Geology of Landfills
By: Slayton Hazard-DanielBy: Slayton Hazard-Danielslayton.hazarddaniel@[email protected]
USM-LIS 201 April 25th, 2011USM-LIS 201 April 25th, 2011
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What is a landfill?What is a landfill?
Carefully engineered area in the Carefully engineered area in the groundground
Man-made construction or erosion of Man-made construction or erosion of the Earththe Earth
Different shapes and sizesDifferent shapes and sizes Objective is to fill with wastesObjective is to fill with wastes Main goal is to keep hydraulic Main goal is to keep hydraulic
connection between wastes and connection between wastes and surrounding environmentsurrounding environment
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Four Essential Parts of a Four Essential Parts of a LandfillLandfill
Bottom liner-Bottom liner- separates trash and separates trash and subsequent leachate subsequent leachate from groundwaterfrom groundwater
Leachate collection Leachate collection system-system- collects water collects water that has percolated that has percolated through the landfill through the landfill itself and contains itself and contains contaminating contaminating substances (leachate)substances (leachate)
A leachate collection pond
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Four Essential Parts of a Four Essential Parts of a LandfillLandfill
Cover-Cover- seals off the seals off the top of the landfilltop of the landfill
Natural Natural hydrogeologic hydrogeologic setting-setting- the area in the area in which a landfill is which a landfill is located must be simple located must be simple and waterproof to and waterproof to prevent wastes from prevent wastes from escapingescaping
An experimental tarp cover
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Success of a LandfillSuccess of a Landfill
Location is keyLocation is key Must be as far from Must be as far from
a major water a major water supply as possiblesupply as possible
Correct soil Correct soil consistencyconsistency
If the location is If the location is good, the erosion good, the erosion of the layers of the of the layers of the landfill will take landfill will take decades.decades.
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Three Main Types of WasteThree Main Types of Waste
ConstructioConstruction- makes n- makes up 40% of up 40% of total wastetotal waste
HouseholHousehold- makes d- makes up 26% of up 26% of total total wastewaste
IndustrialIndustrial- makes - makes up 34% of up 34% of total total wastewaste
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Types of WasteTypes of Waste
Examples:Examples: TextilesTextiles MetalMetal GlassGlass Organic wastesOrganic wastes
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Impact on the EnvironmentImpact on the Environment
Landfills have a huge impact on Landfills have a huge impact on rivers, streams, and lakes.rivers, streams, and lakes.
Because of rain, landfills produce Because of rain, landfills produce toxic runoff that can harm these toxic runoff that can harm these important water sources.important water sources.
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Please recycle.Please recycle.
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Thank you for your Thank you for your attention.attention.
Are there any questions?Are there any questions?
