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Landfill Review
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What is the term for waste from the community?
MUNICIPAL SOLID WASTE
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Source of waste that does not contribute to municipal solid waste
INDUSTRIAL WASTE
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Pounds of trash produced by 1 person in 1 day
4.5
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This is what happens to 55% of our trash
Goes to landfills
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Classification of waste that is regulated
Controlled waste
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Types of waste that are not controlled
Agricultural & Mine/ Quarry waste
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Waste like sand or concrete which does not decompose
INERT
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Structured area where trash is deposited
Landfill
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Unsanitary areas where trash is dropped off; Is a source of pollution & health hazard
DUMP
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Things to consider when building a landfill
Height of water table; prone to landslides
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Most effective strategy for waste management
Waste reduction
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Term for decomposing organic waste without oxygen to make fertilizer and capture CH4 for energy
ANAEROBIC DIGESTION
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Breakdown of organic waste in the presence of oxygen
AEROBIC COMPOSTING
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Reason why aerobic composting is below anaerobic digestion on the hierarchy
ANAEROBIC RECOVERS ENERGY FROM CH4 WHILE AEROBIC LOSES THE CH4 TO THE ATMOSPHERE
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Term for incinerating waste to make electricity
WASTE TO ENERGY
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Air pollution and toxic ash
Con for waste to energy Air pollution and toxic ash
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The least effective type of sanitary landfill
It is better to recover or burn the CH4 to stop the release of methane into the air SANITARY LANDFILL WITHOUT THE RECOVERY OF CH4
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OPEN BURNING OF WASTE OR UNSANITARY LANDFILLS
The least effective waste management strategy due to the release of toxic compounds into the air, soil & water OPEN BURNING OF WASTE OR UNSANITARY LANDFILLS
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Bottom-most layer of landfill which protects against soil contamination from leachate
CLAY
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Water that seeps through landfills and picks up contaminants
LEACHATE
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Landfill layer that collects leachate and funnels it towards the leachate pipes
SAND & GRAVEL LAYER
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Term for compacted acres of trash in a landfill
REFUSE CELL
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Gas collected from landfills; can be used to make electricity
METHANE
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What happens if methane is not flared or used for electricity
FIRES OR EXPLOSIONS
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Layer that consists of a plastic liner to prevent leachate leakage
GEOMEMBRANE LAYER
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What is placed on top of refuse cells each day to keep pests out
DAILY COVER OF SOIL
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Plastic cover on top of a closed landfill; soil & plants are placed on top
FINAL PROTECTIVE CAP
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Purpose of the final cap
Stopping water from getting into landfills/methane from being released
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