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Disposal pp


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Disposal pp

  1. 1. Disposal
  2. 2. Task <ul><li>You are a resident in a medium sized town and your community needs to decide what system of waste disposal your town should have once the current landfill is full (which will be in two years). </li></ul><ul><li>You have looked into the choices and they include: </li></ul>
  3. 3. Landfill <ul><li>Place where garbage is buried. </li></ul><ul><li>Some are lined with plastic to protect surrounding soil and groundwater, and new garbage is covered with soil each day. </li></ul>
  4. 4. Pros & Cons of Landfills <ul><li>Pros </li></ul><ul><li>Provides jobs. </li></ul><ul><li>Plastic liner protects soil and groundwater. </li></ul><ul><li>Cheaper and cleaner than incinerator </li></ul><ul><li>Cons </li></ul><ul><li>Need land. </li></ul><ul><li>People do not like to live nearby- smell, chemicals. </li></ul><ul><li>Transport costs if landfill is further away from town. </li></ul><ul><li>Plastic liner eventually breaks and leaks hazardous materials. </li></ul><ul><li>Poorer people are more likely to live closer to landfills so there is more chance of them being exposed to toxins. </li></ul>
  5. 5. Waste-to-Energy Plant <ul><li>These are incinerators (burners) that capture energy from burning trash . </li></ul><ul><li>There are currently 89 of these in the USA and they burn 13% of the nation’s garbage. </li></ul>
  6. 6. Pros & Cons of Waste-to Energy Plants <ul><li>Pros </li></ul><ul><li>Create cheaper electricity for community. </li></ul><ul><li>Reduce the volume of garbage in landfill. </li></ul><ul><li>Cons </li></ul><ul><li>Incinerator has to be built next to landfill so the ash can be buried there. </li></ul><ul><li>Burning trash leads to chemicals being released in air that can lead to disease. </li></ul><ul><li>Incinerators will discourage recycling </li></ul><ul><li>Too much energy used to burn trash. </li></ul><ul><li>Expensive to build incinerator. </li></ul><ul><li>*Some countries have laws to make sure recyclable materials do not end up in incinerators (e.g. Denmark). </li></ul>
  7. 7. Corporate Responsibility <ul><li>Many items made for planned obsolescence (designed to only last for a certain amount of time before they break). </li></ul><ul><li>Some places (e.g. Maine) have laws that make the manufacturer bear the cost of recycling or disposing of items. </li></ul><ul><li>Pros </li></ul><ul><li>Companies accountable for the trash they create. </li></ul><ul><li>Manufacturers will make items that last longer. </li></ul><ul><li>Cons </li></ul><ul><li>Manufacturers would make items more expensive- consumers have to pay more. </li></ul>
  8. 8. Recycle Plant
  9. 9. Pros & Cons of Recycling Plant <ul><li>Pros </li></ul><ul><li>Building a recycle facility cheaper than landfill or incinerator. </li></ul><ul><li>Recycling plant could employ more people than landfill or incinerator. </li></ul><ul><li>Sell recycled material to cover operating costs. </li></ul><ul><li>Cons </li></ul><ul><li>Finding markets to sell recycled material. </li></ul><ul><li>Need to educate people about recycling to encourage them to recycle more. </li></ul><ul><li>Not all materials can be recycled, so may still need a small landfill. </li></ul><ul><li>* Some places have laws about recycling. You may be fined if you put the wrong things in for recycling, and you can be charged for throwing garbage away. </li></ul>
  10. 10. Packaging <ul><li>Packaging waste includes boxes, tissue paper, envelopes, food packaging, plastic cushioning material, metal cans, plastic & glass containers. </li></ul><ul><li>Pros/What could be done </li></ul><ul><li>Flat pack furniture. Furniture is designed to fit the smallest box possible. </li></ul><ul><li>Source reduction- reducing the amount of materials that are discarded. </li></ul><ul><li>Source reduction is cheapest option. </li></ul><ul><li>Cons </li></ul><ul><li>People want things they buy to look nice. </li></ul><ul><li>* This is the biggest sources of trash, especially food containers. </li></ul><ul><li>*Some places have laws that make manufacturers use minimal packaging. If a company does not use minimal packaging, it may not be able to sell products in those places, and residents have to pay to dispose of the packaging. </li></ul>
  11. 11. Time to decide… ??? <ul><li>1. In groups of 3 or 4 think about whether you can add any more pros and/ or cons to the disposal systems discussed: </li></ul><ul><ul><li>landfill </li></ul></ul><ul><ul><li>waste to energy plant </li></ul></ul><ul><ul><li>corporate responsibility </li></ul></ul><ul><ul><li>recycle depot </li></ul></ul><ul><ul><li>reduced packaging </li></ul></ul><ul><li>2. Discuss and decide what disposal system would you choose? Give reasons for your answer. </li></ul><ul><li>3. Be prepared to share with the class. </li></ul>
  12. 12. Sources <ul><li>Book </li></ul><ul><li>Buy, Use, Toss? A Closer Look at the Things We buy. Facing the Future, 2010. </li></ul><ul><li>Images </li></ul><ul><li>Landfills In The, . Retrieved 13 Nov 2010. </li></ul><ul><li>Landfill Crosssection, . Retrieved 13 Nov 2010. </li></ul><ul><li>Landfill. Retrieved 13 Nov 2010. </li></ul><ul><li>Waste to Energy Plant. Vestforbrænding, the largest waste -to- energy plant in Denmark handling more. Retrieved 13 Nov 2010. </li></ul><ul><li>Waste to Energy plant. WASTE TO ENERGY : The H. C. Ørsted and Avedøre power stations in Copenhagen. Retrieved 13 Nov 2010. </li></ul><ul><li>Handphone. Retrieved 13 Nov 2010. </li></ul><ul><li>Alarm clock. Retrieved 13 Nov 2010. </li></ul><ul><li>Pens Retrieved 13 Nov 2010. </li></ul><ul><li>Toothbrush Retrieved 13 Nov 2010. </li></ul><ul><li>Recycle Plant Retrieved 13 Nov 2010. </li></ul><ul><li>Recycle depot Retrieved 13 Nov 2010. </li></ul><ul><li>Crushed drink bottles,0.jpg Retrieved 13 Nov 2010. </li></ul><ul><li>Packaging Retrieved 13 Nov 2010. </li></ul><ul><li>Packaging Retrieved 13 Nov 2010. </li></ul>
  13. 13. <ul><li>Has this lesson made you more thoughtful about where your trash goes? In what way? </li></ul><ul><li>Who do you think should be responsible for disposing of hard- to- recycle products or those not designed to last long? Consumers? Manufacturers? Governments? </li></ul><ul><li>How could efficient waste management reduce the need for extracting natural resources to make new products? </li></ul><ul><li>Researchers have found out that we often throw out very different kinds and amounts of trash than we think we do. Why might we have a distorted image of our trash? How could people become more aware about the trash they create? </li></ul><ul><li>You have heard of the popular waste management strategy of “ reduce, reuse, recycle. ” Why do you think the words are listed in that order? </li></ul>Questions to Think About: