Presentation is loading. Please wait.

Presentation is loading. Please wait.

Lab period o Article jigsaw. Chapter 24 Solid and Hazardous Waste.

Similar presentations


Presentation on theme: "Lab period o Article jigsaw. Chapter 24 Solid and Hazardous Waste."— Presentation transcript:

1 Lab period o Article jigsaw

2 Chapter 24 Solid and Hazardous Waste

3 Question of the day: o From when you woke up till Eco class, make a list of all the things you have thrown away? o Do you think about the packaging of a product before you buy it? (How about those Starbucks/Wawa cups?) o How often do you reuse objects, recycle objects?

4 Overview of Chapter 24 o Solid Waste Types of Solid Waste Types of Solid Waste o Waste Prevention Reducing the Amount of Waste Reducing the Amount of Waste Reusing Products Reusing Products Recycling Materials Recycling Materials o Hazardous Waste Types of Hazardous Waste Types of Hazardous Waste Management of Hazardous Waste Management of Hazardous Waste o Environmental Justice

5 Solid Waste o US generates more solid waste per capita than any other country 2.1kg per person per day 2.1kg per person per day o Types of Solid Waste Municipal solid waste Municipal solid waste Solid material discarded by homes, office buildings, retail stores, schools, hospitals, prisons, etc Solid material discarded by homes, office buildings, retail stores, schools, hospitals, prisons, etc Relatively small portion of solid waste produced Relatively small portion of solid waste produced Non-municipal solid waste Non-municipal solid waste Solid waste generated by industry, agriculture, and mining Solid waste generated by industry, agriculture, and mining

6 Composition of Municipal Solid Waste

7 Disposal of Solid Waste o Three methods Sanitary Landfills Sanitary Landfills Incineration Incineration Recycling Recycling

8 Sanitary Landfill o Compacting and burying waste under a shallow layer of soil o Most common method of disposal

9 Chester County Solid Waste Authority o

10 Sanitary Landfill o Problems Methane gas production by microorganisms Methane gas production by microorganisms Contamination of surface water & ground water by leachate Contamination of surface water & ground water by leachate Not a long-term remedy Not a long-term remedy Few new facilities being opened Few new facilities being opened Closing a full landfill is very expensive Closing a full landfill is very expensive

11 Sanitary Landfill o Special Problem of Plastic Much of plastic is from packaging Much of plastic is from packaging Chemically stable and do not readily break down and decompose Chemically stable and do not readily break down and decompose o Special Problem of Tires Cannot be melted and reused for tires Cannot be melted and reused for tires Made from materials that cannot be recycled Made from materials that cannot be recycled Can be incinerated or shredded Can be incinerated or shredded

12 Tires o we-recycle/general-information we-recycle/general-information we-recycle/general-information o Household Hazardous Waste Days o Chester County, PA Schedule.pdf Schedule.pdf Schedule.pdf o Delaware County, PA html html html

13 The Plastic problem o Pacific Ocean Garbage Issue o DVD-Clip from Wired Science

14 Incineration o Volume of solid waste reduced by 90% o Produces heat that can make steam to generate electricity Produce less carbon emissions than fossil fuel power plants (right) Produce less carbon emissions than fossil fuel power plants (right)

15 Incineration o Types of Incinerators Mass burn (below) Mass burn (below) Modular Modular Refuse-derived Refuse-derived

16 Incinerator o Problems Associated with Incineration Yields air pollution Yields air pollution Produce large amounts of ash Produce large amounts of ash Site selection often controversial Site selection often controversial

17 Chester, PA “Trash to Steam” Plant o /07/06/news/doc4a51b600e txt?viewmode=fullstory /07/06/news/doc4a51b600e txt?viewmode=fullstory /07/06/news/doc4a51b600e txt?viewmode=fullstory o facilities/videos.aspx facilities/videos.aspx facilities/videos.aspx

18 Composting o Includes: Food scraps Food scraps Sewage sludge Sewage sludge Agricultural manure Agricultural manure Yard waste Yard waste o Reduces yard waste in landfills o Can be sold or distributed to community

19 How to yard compost? o B_XLwE&feature=related B_XLwE&feature=related B_XLwE&feature=related

20 Waste Prevention o Three Goals (1) Reduce the amount of waste (1) Reduce the amount of waste (2) Reuse products (2) Reuse products (3) Recycle materials (3) Recycle materials

21 Reducing Waste o Purchase products with less packaging

22 Reducing Waste o Source reduction Products are designed and manufactured in ways that decrease the volume of solid waste in the waste stream Products are designed and manufactured in ways that decrease the volume of solid waste in the waste stream o Pollution Prevention Act (1990) o Dematerialization Progressive decrease in the size and weight of a product as a result of technological improvements Progressive decrease in the size and weight of a product as a result of technological improvements

23 Reusing Products o Refilling glass beverage bottles Heavier glass that costs more Heavier glass that costs more o Japan recycles almost all bottles Reused 20 times Reused 20 times

24 Recycling Materials o Every ton of recycled paper saves: 17 trees 17 trees 7000 gallons of water 7000 gallons of water 4100 kwatt-hrs of energy 4100 kwatt-hrs of energy 3 cubic yards of landfill space 3 cubic yards of landfill space o Recycle Glass bottles, newspapers, steel cans, plastic bottles, cardboard, office paper Glass bottles, newspapers, steel cans, plastic bottles, cardboard, office paper

25 Recycling o Recycling Paper US recycles 50% US recycles 50% Many developed countries are higher Many developed countries are higher o Recycling Glass US recycles 25% US recycles 25% Costs less than new glass Costs less than new glass Can be used to make glassphalt (right) Can be used to make glassphalt (right)

26 Recycling o Recycling Aluminum Making new can from recycled one costs far less than making a brand new one Making new can from recycled one costs far less than making a brand new one

27 Recycling o Recycling Metals other than Aluminum Lead, gold, iron, steel, silver and zinc Lead, gold, iron, steel, silver and zinc Metallic composition is often unknown Metallic composition is often unknown Makes recycling difficult Makes recycling difficult o Recycling Plastic Less than 20% is recycled Less than 20% is recycled Less expensive to make from raw materials Less expensive to make from raw materials

28 Recycling o Recycling Tires Few products are made from old tires Few products are made from old tires Playground equipment Playground equipment Trashcans Trashcans Garden hose Garden hose Carpet Carpet Roofing materials Roofing materials 36% of tires are currently recycled to make other products 36% of tires are currently recycled to make other products

29 Single Stream recycling o gXcP_k gXcP_k gXcP_k

30 Cell phone recycling o Ce9PM&NR=1&feature=fvwp Ce9PM&NR=1&feature=fvwp Ce9PM&NR=1&feature=fvwp o Terracycle- video and website

31 Integrated Waste Management

32 Hazardous Waste o Any discarded chemical that threatens human health or the environment Reactive, corrosive, explosive or toxic chemicals Reactive, corrosive, explosive or toxic chemicals o Types of Hazardous Waste Dioxins Dioxins PCBs PCBs Radioactive waste Radioactive waste

33 Management of Hazardous Waste o Chemical accidents National Response Center notified National Response Center notified Typically involves oil, gasoline or other petroleum spill Typically involves oil, gasoline or other petroleum spill o Current Management Policies Resource Conservation and Recovery Act (1976, 1984) Resource Conservation and Recovery Act (1976, 1984) Comprehensive Environmental Response, Compensation, and Liability Act (1980) Comprehensive Environmental Response, Compensation, and Liability Act (1980)

34 Management of Hazardous Waste o Cleaning up existing hazardous waste: superfund program 400,000 waste sites 400,000 waste sites Leaking chemical storage tanks and drums (right) Leaking chemical storage tanks and drums (right) Pesticides dumps Pesticides dumps Piles of mining wastes Piles of mining wastes o Must be cleaned up

35 Case-In-Point Hanford Nuclear Reservation

36 Management of Hazardous Waste o Superfund National Priorities List 2006: 1558 sites on the list 2006: 1558 sites on the list States with the greatest number of sites States with the greatest number of sites New Jersey (115) New Jersey (115) California (93) California (93) Pennsylvania (93) Pennsylvania (93) New York (86) New York (86) Michigan (65) Michigan (65)

37 Management of Hazardous Waste o Biological Treatment of Hazardous Chemicals Bioremediation Bioremediation Phytoremediation Phytoremediation o Management the Waste we are Producing Now (1) source reduction (1) source reduction (2) conversion to less hazardous materials (2) conversion to less hazardous materials (3) long-term storage (3) long-term storage

38 Management of Hazardous Waste o Hazardous Waste Landfill

39 Environmental Justice o Environmental Justice and Ethical Issues Right of every citizen, regardless of age, race, gender, social class, to adequate protection from environmental hazards Right of every citizen, regardless of age, race, gender, social class, to adequate protection from environmental hazards Fundamental human right Fundamental human right Grassroots campaign Grassroots campaign o Mandating environmental Justice- Federal Level-Clinton 1994, 1997 case in LA, nuke facility(Ur processing plant)

40 Environmental Justice o International Waste Management Developed countries sometimes send their waste to developing countries Developed countries sometimes send their waste to developing countries Less expensive than following laws within the country Less expensive than following laws within the country Controversial aspect of waste management Controversial aspect of waste management Basel Convention (1989) Basel Convention (1989) Restricts international transport of hazardous waste Restricts international transport of hazardous waste


Download ppt "Lab period o Article jigsaw. Chapter 24 Solid and Hazardous Waste."

Similar presentations


Ads by Google