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_____% of our waste comes from from mining, oil & gas production, agriculture, industrial production (scrap metal, plastic, etc.)

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Presentation on theme: "_____% of our waste comes from from mining, oil & gas production, agriculture, industrial production (scrap metal, plastic, etc.)"— Presentation transcript:

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2 _____% of our waste comes from from mining, oil & gas production, agriculture, industrial production (scrap metal, plastic, etc.)

3 We are only ______% of the world's population yet we create _____% of the world's wastes

4 Legal Definition of hazardous waste

5 Things not included in hazardous waste

6 Views waste as unavoidable, and must be handled in a way that, reduces harm Deal with waste by burying,burning, shipping off

7 Waste is... - A potential resource - Harmful and should not be made in the first place

8 First Priority of Waste Management - change industrial processes to eliminate the use of harmful chemicals - reduce packaging in materials and products - make products that last longer and are recyclable, reuseable, or easy to repair

9 Second Priority of Waste Management - Reuse - Repair - Recycle - Compost - buy reuseable and recyclable products

10 Last Priority of Waste Management - Treat waste to reduce toxicity - incinerate waste - bury waste in landfills - Release waste into environment for dispersal and dilution

11 Ways to reduce waste production

12 Benefits of reusing

13 Primary (Closed-loop) recycling

14 Secondary (Open-loop) recycling

15 Used for large scale recycling, collects urban wastes and separates or shreds it; valuable materials sold to manufacturers as new materials, left-over wastes (mainly non-recyclable plastics and paper) are burned

16 most recycled ITEM (56%)

17 Critics view of recycling

18 Proponents view of recycling

19 Advantages of recycling

20 Burns trash to create electricity

21 we burn ____% of solid wastes and _____% of hazardous wastes

22 Problems of incineration

23 Benefits of landfills

24 Problems with landfills -Traffic, noise, dust, smell - Slow decomposition - Little/no water & oxygen - Methane, H2S, volatile gases - Groundwater contamination - ALL LANDFILLS WILL EVENTUALLY LEAK

25 First priority of managing hazardous waste which involves : - change industrial processes to reduce or eliminate industrial processes - recycle and reuse hazardous waste

26 Second priority of managing hazardous waste - natural decomposition - incineration - Thermal treatment - Chemical, physical, and biological treatment - dilution in air or water

27 Last priority of managing hazardous waste which includes : - landfill - underground injection wells - surface impoundments - underground salt formations

28 Ways to detox hazardous wastes

29 Incinerate at high temps Reduced to atoms, released as gasses (CO, CO2, toxic metals, some particulates) More complete incineration than normal

30 Biological detox methods (for hazardous wastes)

31 Pump hazardous waste into dry rock BELOW aqifers

32 Put hazardous wastes into ponds or lagoons, solids will settle and liquids will evaporate..has many transport and leak issues

33 Who didn’t sign the Basel Treaty?

34 What is due next week?


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