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How many years does it take these objects to break down in a landfill? Disposable nappy/diaperPlastic bottle Cotton T shirtPaper bag Leather beltBanana peel Styrofoam cupAluminium can Glass bottleBlock of wood
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Disposable nappy/diaper 500 yrsPlastic bottle 1 m yrs Cotton T shirt 6 monthsPaper bag 2 months Leather belt 50 yrsBanana peel 1 month Styrofoam cup 1 M yrsAluminium can 500 yrs Glass bottle 1 M yrsBlock of wood 20 yrs
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Solid Domestic Waste: WEEE man: waste electrical and electronic equipment - your lifetime, 3 ts
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http://www.youtube.com/watch?v=Pfr xFbhy5RI
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Every year some 45,000 tons of plastic waste are dumped into the world's oceans Recycling one aluminium can saves half that can filled with gasoline. North Americans throw away 2.5 million plastic bottles every hour.
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At relevant times in the PPT watch these: watch one of the gyre ones now Plastic waste: Gyre http://www.youtube.com/watch?v=y5y1W5xduiE&feature=related Gyre http://www.youtube.com/watch?v=tnUjTHB1lvM Waste landfill Rio http://www.youtube.com/watch?v=Nyu8bLw9F8M Incinerate http://www.youtube.com/watch?v=fwikqijnftQ Compost http://www.youtube.com/watch?v=Oj6DLDII5OA
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What is SDW? garden waste kitchen waste And then: disposal nappies, paper and cardboard, general household sweepings, glass, wood, furniture, scrap metal/white goods, soil, textiles, metal packaging
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How much is it increasing by? It is increasing by 3 % per year
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Diapers Kristen Shull
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Why A Problem? Takes 1 cup crude oil to make plastic for 1 disposable diaper Takes 286 lbs. of plastic (including diaper packaging) per year to supply 1 baby in disposable diapers 18 billion disposable diapers used in U.S. each year. Enough to stretch to the moon and back 9 times Filling up landfills Health hazards associated with human waste in landfills Consumption in both renewable/ non-renewable resources
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Where Do They End Up? Landfills
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Solution Use cloth diapers Disposable diapers create 2 times as much water waste, use 3 times as much energy, use 8 times the non-regenerable raw materials, use 90 times the renewable raw materials and up to 30 times as much land for growing raw materials Disposables consume 70% more energy than average reusable diaper
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What did you learn? 1.What are the main two types of SDW? 2.Name three other sources of SDW. 3.True/false: We are creating less waste each year. 4.What are three problems caused by disposable diapers/nappies? 5.Where do nappies end up? 6.Solution is…
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Pollution management strategies: Match up a-j with a number 1. Reduce the amount of waste 2. Reuse goods to extend their lifespan 3. Recover value 4. Dispose of waste in landfills a.Used goods have another use e.g. clothes to cleaning clothes b.Charity shops c.Recycle goods e.g. paper, glass d.Have less packaging on products e.Refill containers f.Burn waste and get electricity from it g.Make artificial hills h.Collect methane from landfills i.Refurbish goods j.Compost food waste
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1. Reduce the amount of waste Have less packaging on products Consumers buy products with less packaging 2. Reuse goods to extend their lifespan Charity shops Refill containers Used goods have another use e.g. clothes to cleaning clothes Refurbish goods 3. Recover value Recycle goods e.g. paper, glass Burn waste and get electricity from it Collect methane from landfills Compost food waste 4. Dispose of waste Make artificial hills POLLUTION MANAGEMENT STRATEGIES Answers: (some could occur in a different place, or more than one place0
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Quiz contd: 7. What can we do with our SDW? (4) 8. How can we reduce the amount of waste? (2) 9. How can we ‘re-use’ goods? (2) 10. How can we get value from our waste? (2)
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Recycling Interesting Facts – Turning of the tap while brushing your teeth in the morning and before bedtimes can save up to 8 gallons per day. This is a savings of 240 gallons per month. – A little more than 48% of all office paper is recycled. This is used to make writing papers, paperboard, tissue, and insulation. – Enough plastic bottles are thrown away in the United States each year to circle the Earth four times. What can be recycled? – Paper – Plastic – Glass – Metals – Water
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Pros and Cons PROs – We use less virgin resources to produce, therefore create less waste. – Allows you to reuse materials, rather than buying them new. – Recycling saves money: Lower manufacturing costs for products made from recycled rather than virgin materials. Avoiding landfill or incineration fees, which is costs over $100 per ton. The value of conserving our natural resources! The value of saved energy by recycling materials rather than obtaining virgin materials CONs – When factories recycle, they need fuel and energy for machinery, so this may cause pollution. – Recycling can cost money: Collection, transportation and processing costs Capital investments such as equipment and container costs and labour fees Recycling market fees may be charged to cover the costs of processing certain materials
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Composting Every year we dispose of 24 million tons of leaves and grass clippings, which could be composted to conserve landfill space. Asra Asad
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What is it? Composting is a natural process of recycling decomposed organic materials into a rich soil known as compost. Anything that was once living will decompose. By composting, you are returning nutrients back into the soil.
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Pros Has the ability to help regenerate poor quality soil it helps cleaning up contaminated soil. avoids the production of methane and in the landfills. Can reduce the need for water, fertilizers and pesticides thereby being cost effective.
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Cons Time involved – requires a time commitment to properly product good quality compost Land required – composting can require a considerable area of land Cost of equipment – equipment required for composting can be expensive
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Incineration By Mikey Shaw and Allen Francis
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Definitions Incineration means burning. It converts the waste into ash, gas particulates and heat which can in turn be used to generate electricity.
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Process Burn pile – simplest and easiest form, however could lead to fires Burn barrel – burning inside a barrel, more controlled Moving grate - The moving grate enables the movement of waste through the combustion chamber to be optimized to allow a more efficient and complete combustion.
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Advantages Reduce volume of original waste by as much as 80-90%. Benefits for the treatment of certain types of waste, notably clinical waste and hazardous waste
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Disadvantages Air pollution – leading to other environmental problems such as acid rain, smog, etc. The volume of traffic ash - 20% of the mass original waste, Expensive to build incinerators
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singapore develops new waste disposal method
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Landfills Ryuya Yokota Tae wan Kim
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-LAND FILLS ARE AREAS OF LANDS WHERE IT HAS BEEN FILLED WITH WASTE -INTERNAL LANDFILLS WHERE A PRODUCER OF WASTE SUCH AS A FACTORY DISPOSE OF WASTE IN THEIR OWN LANDFILL, EXTERNAL WHERE WASTE FROM MANY PRODUCERS ARE COLLECTED AND BURIED INTO ONE LANDFILL
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CARRY IN WASTE MATERIAL COVERING THEM WITH MATERIAL. TRUCKS CARRY COMPACTED WASTE MATERIAL INTO THE AREA DUMP THEM INTO A SET AREA. COMPACTORS ARE USED TO FURTHER COMPACT THE WASTE MATERIAL SUCH AS SOIL, CHIPPED WOODS, AND TEMPORARY BLANKETS COVER THE WASTE.
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CHEAP EASY USES SMALL AMOUNTS OF LAND (IF DONE LEGALLY) THE GAS GIVEN OUT OF THE LANDFILL CAN BE USED TO CREATE ELECTRICITY IT CREATES WORK THE AMOUNT OF TRANSPORT OF WASTES WILL DECREASE SINCE LANDFILLS WILL BE NEAR BY
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THE SITE WILL LOOK UNATTRACTIVE TO WHERE EVER IT IS SET GASES CREATED IN THE LANDFILLS ARE DANGEROUS, SUCH AS CO2 AND CARBON MONOXIDE LOCAL RIVERS NEAR THE LANDFILLS WILL TURN POLLUTED IF THE LAND IS USED TO FULL CAPACITY WITH WASTE, ITS SOIL MAY NEVER BE USED AGAIN THE GASES ALSO GIVEN OFF THE LAND FILLS ARE VERY VILE
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11. Quiz ending: Waste disposal methodAdvantagesDisadvantages MOSTCOPING+_ INERANCITION++++++ ______ ECYLCRING+_ FLANDILL++++++ ______
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12. What can you remember? Glass is made from Broken glass is called Aluminium comes from You get bauxite by Plastic is made from Steel comes from.............. ore To recycle aluminium it uses only ….% of the energy as it does to start afresh. The tax on plastic bags is called the Plastic bags take at least ………….. years to break down
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Steel cans – should be recycle them? Why? Glass bottles and jars? Why? Aluminium cans? Why? What container should you use for your coffee? Why? Why should we cut down the use of plastic bags? How can we?
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REVISION NOTES NEEDED – SHORT, BULLET POINTS IB QUESTIONS…YOU MUST BE ABLE TO: SAY WHAT SDW IS SAY WHY SDW IS A PROBLEM IN THE WORLD EXPLAIN WHAT COMPOSTING AND RECYCLING ARE AND WHAT IS GOOD AND BAD ABOUT THEM LIST AT LEAST THREE ADVANTAGES AND DISADVANTAGES OF LANDFILLS AND INCINERATION DESCRIBE WAYS OF REDUCING THE AMOUNT OF SDW IN YOUR AREA; EVALUATE STRATEGIES RELATE CHANGES IN SDW QUANTITIES TO POPULATION GROWTH AND RECYCLING WORK OUT PERCENTAGES DESCRIBE AND EXPLAIN GRAPHS
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