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GGRA03H3 (139)

Lec 9

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Andre Sorensen

Garbage What is garbage according to Benton short solid wasteaka garbage is defined as material that has no apparent obvious or significant economic or beneficial value to humans that is intentionally thrown away for disposal p191 people have always discarded such materials but the composition ofdumps and the amount of garbage changed radically after ww2 whyplastic became cheaper more package use plastic Huge increases in waste production From 1960 to 1990 us garbage production per capita almost doubled form 27lbscapita per day to 45 lbscapita This was primarily due to increases in wealth increased consumption and increased packaging waste Also changes in the retail system toothbrush package with big paper pack since dont want people to steal it easily home hardware use plastic packThere was also major change in the composition of waste with the growth of plastic products and packaging increased use of household chemicals paints tires aerosol cansdisposable products such as toothbrushesChanging dump tech thDuring the first half of the 20 century most dumps were simple pits in valley or off cliffs Increased concern about rats disease etc led to the development of sanitary landfill technology This was basically the use of soil layers spread on top of each days dumping to prevent animals from scavenging smells wind dispersal Later it was found that water draining from dumps was highly toxic so liners are now used What are the main problems with such landfills casual with dumping dump on the cliff answer to ques very long time300 years contaminates to break downWhat is in our waste system Traditional products such as books paper cartons furniture appliances carpets clothing etc
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