5.5 Solid Domestic Waste. Sub-subtopics 5.5.1 Outline the types of solid domestic waste. 5.5.2...

5.5 Solid Domestic Waste

Sub-subtopics

5.5.1 Outline the types of solid domestic waste.5.5.2 Describe and evaluate pollution management strategies for solid

domestic (municipal) waste.

5.5.1 Solid Domestic Waste (SDW )

Solid● Any non-liquid, non-

gas

Domestic● Household● Municipal

Waste● Discarded material

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5.5.1 Types of SDW

Waste type● Food/Kitchen● Metals● Other● Other Plastic● Glass● Plastic● Paper/Cardboard● Other Organic● Wood/Timber● Green Waste

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5.5.1 Types of SDW

Waste type● Food/Kitchen● Metals● Other● Other Plastic● Glass● Plastic● Paper/Cardboard● Other Organic● Wood/Timber● Green Waste

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5.5.1 U.S. Types of SDW

5.5.2 U.S. Management of SDW

5.5.2 Management of SW

Manufacturing (56%)● scrap metal● plastics● paper● sludge● ash● Indirectly created by SDW

Mining (14%)● rock and minerals (tailings)● dumped into waterways

Agriculture (9%)● crop waste● manure

5.5.2 Management of SDWOptions

● Landfill● Incineration● Recycling● Composting

● Any more?

5.5.2 U.S. Management of SDW

5.5.2 Landfill Issues

Waste put into ground, and covered with soil, plastic, or both each day.

● anaerobic decomposition produces methane

● aerobic decomposition produces carbon dioxide

● noise, smell, vermin● Leachates - seeping

liquid into groundwater aquiferso Liners used, then

encourage anaerobic decomposition

● Finite amount of area

5.5.2 Incinerator Issues

● do not separate materialso cleansers, batteries, paint

● air pollutiono dioxins

● creates ash as byproducto 10-20% of original masso where does it go?

● traffico air & noise pollution

● very expensive

Toy Story 3

5.5.2 Recycling

Steps:1. Collecting & sorting2. Transportation3. Cleaning4. Shredding/crushing5. Reusing

shredded/crushed material

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5.5.2 Recycling

Steps:1. Collecting & sorting2. Transportation3. Cleaning4. Shredding/crushing5. Reusing

shredded/crushed material

5.5.2 Composting

REDUCE!