waste disposal and recycling sec. 4-2. objectives e.4.2.1 name three methods of solid waste...
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Waste Disposal and RecyclingSec. 4-2
Objectives
E.4.2.1 Name three methods of solid waste disposal.
E.4.2.2 Identify ways people can control the solid waste problem.
E.4.2.3 Explain how hazardous waste can be disposed of.
Problems of Waste Disposal
What are three methods of disposing of solid waste?
Burning
Burying
Recycling
Each has advantages and disadvantages.
Incineration
Some garbage is burned in giant furnaces called incinerators.
Advantages:
Doesn’t need landfill space.
Can be used to make electricity.
Incineration
Disadvantages:
Expensive
Still have waste to dispose of.
Release a lot of pollution.
Incineration
Landfills
A landfill is basically a giant hole in the ground where people bury garbage.
Landfills
Landfills
Landfills
Landfills
Bauxite
Mostly Mined in Australia
Recycling
What Can Be Recycled?
Precycling
Compost
Compost
A Natural Cycle