Landfill Review.

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Presentation transcript:

Landfill Review

What is the term for waste from the community? MUNICIPAL SOLID WASTE

Source of waste that does not contribute to municipal solid waste INDUSTRIAL WASTE

Pounds of trash produced by 1 person in 1 day 4.5

This is what happens to 55% of our trash Goes to landfills

Classification of waste that is regulated Controlled waste

Types of waste that are not controlled Agricultural & Mine/ Quarry waste

Waste like sand or concrete which does not decompose INERT

Structured area where trash is deposited Landfill

Unsanitary areas where trash is dropped off; Is a source of pollution & health hazard DUMP

Things to consider when building a landfill Height of water table; prone to landslides

Most effective strategy for waste management Waste reduction

Term for decomposing organic waste without oxygen to make fertilizer and capture CH4 for energy ANAEROBIC DIGESTION

Breakdown of organic waste in the presence of oxygen AEROBIC COMPOSTING

Reason why aerobic composting is below anaerobic digestion on the hierarchy ANAEROBIC RECOVERS ENERGY FROM CH4 WHILE AEROBIC LOSES THE CH4 TO THE ATMOSPHERE

Term for incinerating waste to make electricity WASTE TO ENERGY

Air pollution and toxic ash Con for waste to energy Air pollution and toxic ash

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

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

Bottom-most layer of landfill which protects against soil contamination from leachate CLAY

Water that seeps through landfills and picks up contaminants LEACHATE

Landfill layer that collects leachate and funnels it towards the leachate pipes SAND & GRAVEL LAYER

Term for compacted acres of trash in a landfill REFUSE CELL

Gas collected from landfills; can be used to make electricity METHANE

What happens if methane is not flared or used for electricity FIRES OR EXPLOSIONS

Layer that consists of a plastic liner to prevent leachate leakage GEOMEMBRANE LAYER

What is placed on top of refuse cells each day to keep pests out DAILY COVER OF SOIL

Plastic cover on top of a closed landfill; soil & plants are placed on top FINAL PROTECTIVE CAP

Purpose of the final cap Stopping water from getting into landfills/methane from being released