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Solid and Hazardous Waste
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Question of the day: From when you woke up till Eco class, make a list of all the things you have thrown away? Do you think about the packaging of a product before you buy it? (How about those Starbucks/Wawa cups?) How often do you reuse objects, recycle objects?
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Question of the day: List the top five materials that you think get thrown away into landfills. What is the difference between a sanitary landfill and an incinerator?
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Overview of Chapter Solid Waste Waste Prevention Hazardous Waste
Types of Solid Waste Waste Prevention Reducing the Amount of Waste Reusing Products Recycling Materials Hazardous Waste Types of Hazardous Waste Management of Hazardous Waste
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Solid Waste US generates more solid waste per capita than any other country 1.98 kg per person per day (let’s just say 2 kg, books says 2.1kg) Types of Solid Waste Municipal solid waste Solid material discarded by homes, office buildings, retail stores, schools, hospitals, prisons, etc Relatively small portion of solid waste produced Non-municipal solid waste Solid waste generated by industry, agriculture, and mining
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Zero waste family
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Composition of Municipal Solid Waste
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Disposal of Solid Waste
Three methods Sanitary Landfills Incineration Recycling
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Sanitary Landfill Compacting and burying waste under a shallow layer of soil Most common method of disposal
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Chester County Solid Waste Authority
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Sanitary Landfill Problems Methane gas production by microorganisms
Contamination of surface water & ground water by leachate Not a long-term remedy Few new facilities being opened Closing a full landfill is very expensive
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Q of day: What company picks up your trash?
Where does your trash go? Be specific. What are some problems with landfills?
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Sanitary Landfill Special Problem of Plastic Special Problem of Tires
Much of plastic is from packaging Chemically stable and do not readily break down and decompose Special Problem of Tires Cannot be melted and reused for tires Made from materials that cannot be recycled Can be incinerated or shredded
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Tires Household Hazardous Waste Days Chester County, PA Delaware County, PA
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Incineration Volume of solid waste reduced by 90%
Produces heat that can make steam to generate electricity Produce less carbon emissions than fossil fuel power plants (right)
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Incineration Types of Incinerators Mass burn (below) Modular
Refuse-derived
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Incinerator Problems Associated with Incineration Yields air pollution
Produce large amounts of ash Site selection often controversial
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Chester, PA “Trash to Steam” Plant
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Composting Includes: Reduces yard waste in landfills
Food scraps Sewage sludge Agricultural manure Yard waste Reduces yard waste in landfills Can be sold or distributed to community
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How to yard compost?
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Period 5 Q of day: What are the top 3 things that are thrown away?
What is the 4th? What can we/you do to prevent so much of the 4th going to landfills?
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Dive! Interesting concept
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Waste Prevention Three Goals (1) Reduce the amount of waste
(2) Reuse products (3) Recycle materials
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Reducing Waste Purchase products with less packaging
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Reducing Waste Source reduction Pollution Prevention Act (1990)
Products are designed and manufactured in ways that decrease the volume of solid waste in the waste stream Pollution Prevention Act (1990) Dematerialization Progressive decrease in the size and weight of a product as a result of technological improvements
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Reusing Products Refilling glass beverage bottles
Heavier glass that costs more Japan recycles almost all bottles Reused 20 times
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Recycling Materials Every ton of recycled paper saves: Recycle
17 trees 7000 gallons of water 4100 kwatt-hrs of energy 3 cubic yards of landfill space Recycle Glass bottles, newspapers, steel cans, plastic bottles, cardboard, office paper
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Recycling Recycling Paper Recycling Glass US recycles 50%
Many developed countries are higher Recycling Glass US recycles 25% Costs less than new glass Can be used to make glassphalt (right)
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Recycling Recycling Aluminum
Making new can from recycled one costs far less than making a brand new one
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Recycling Recycling Metals other than Aluminum Recycling Plastic
Lead, gold, iron, steel, silver and zinc Metallic composition is often unknown Makes recycling difficult Recycling Plastic Less than 20% is recycled Less expensive to make from raw materials
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Recycling Recycling Tires Few products are made from old tires
Playground equipment Trashcans Garden hose Carpet Roofing materials 36% of tires are currently recycled to make other products
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Upcycle Project-. Create! Creativity!
Terracycle Freecycle
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Recycling research continued
Where can you recycle materials like? Computers
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Single Stream recycling
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Cell phone recycling The After Life of Cell Phones Terracycle- video and website
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Integrated Waste Management
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Question of the day 3: 1. What qualifies as hazardous waste?
2. Why do you think it needs separate disposal? What is Superfund? (just guess)
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Hazardous Waste Any discarded chemical that threatens human health or the environment Reactive, corrosive, explosive or toxic chemicals Types of Hazardous Waste Dioxins PCBs Radioactive waste
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Management of Hazardous Waste
Chemical accidents National Response Center notified Typically involves oil, gasoline or other petroleum spill Current Management Policies Resource Conservation and Recovery Act (1976, 1984) Comprehensive Environmental Response, Compensation, and Liability Act (1980)
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Resource Conservation and Recovery Act (1976, 1984)
The Resource Conservation and Recovery Act (RCRA) gives EPA the authority to control hazardous waste from the "cradle-to-grave." This includes the generation, transportation, treatment, storage, and disposal of hazardous waste. RCRA also set forth a framework for the management of non-hazardous solid wastes. The 1986 amendments to RCRA enabled EPA to address environmental problems that could result from underground tanks storing petroleum and other hazardous substances. HSWA - the Federal Hazardous and Solid Waste Amendments - are the 1984 amendments to RCRA that focused on waste minimization and phasing out land disposal of hazardous waste as well as corrective action for releases. Some of the other mandates of this law include increased enforcement authority for EPA, more stringent hazardous waste management standards, and a comprehensive underground storage tank program.
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Management of Hazardous Waste
Cleaning up existing hazardous waste: superfund program 400,000 waste sites Leaking chemical storage tanks and drums (right) Pesticides dumps Piles of mining wastes Must be cleaned up
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Love Canal First site of it’s kind. Sparked CERCLA. (aka Superfund)
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Case-In-Point Hanford Nuclear Reservation
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Management of Hazardous Waste
Superfund National Priorities List 2006: sites on the list States with the greatest number of sites New Jersey (115) California (93) Pennsylvania (93) New York (86) Michigan (65)
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Superfund: What is it? Superfund is the name given to the environmental program established to address abandoned hazardous waste sites. It is also the name of the fund established by the Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended (CERCLA statute, CERCLA overview). This law was enacted in the wake of the discovery of toxic waste dumps such as Love Canal and Times Beach in the 1970s. It allows the EPA to clean up such sites and to compel responsible parties to perform cleanups or reimburse the government for EPA-lead cleanups.
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Management of Hazardous Waste
Biological Treatment of Hazardous Chemicals Bioremediation Phytoremediation Management the Waste we are Producing Now (1) source reduction (2) conversion to less hazardous materials (3) long-term storage
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Management of Hazardous Waste
Hazardous Waste Landfill
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Superfund research With a partner, log on to the EPA’s webpage for SUPERFUND. I will assign you a county. Pick a SUPERFUND site: Where is it? What is the contamination? Who are the parties involved (the polluters)? How is it being cleaned up? Is it cleaned up or is the site still active?
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