1 / 17

Solid Domestic Waste

Solid Domestic Waste. Objectives: Outline the types of solid domestic waste Describe and evaluate pollution management strategies for solid domestic waste. Domestic Waste. Waste is material which has no value to its producer.

daktari
Download Presentation

Solid Domestic Waste

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Solid Domestic Waste Objectives: Outline the types of solid domestic waste Describe and evaluate pollution management strategies for solid domestic waste

  2. Domestic Waste • Waste is material which has no value to its producer. • Americans produce nearly 3 kg per capita of waste per day. (according to the EPA)

  3. Domestic Waste • Include the following categories • Sewage • Run-off from roads and lawns • Landfill • Air (incineration) • Paper, glass, metal, plastics, packaging • Organic waste from kitchen • Anything not related to industry

  4. Types of Waste • Solid waste (paper, glass, plastics, metals) • Disease causing agents (bacteria, viruses) • Oxygen demanding waste (BOD) • Water soluble inorganic chemicals (acids, salts, mercury, lead) • Inorganic plant nutrients (nitrates, phosphates) • Organic chemicals (oil, gasoline, cleaning products, pesticides) • Sediments (soil, silt) • Thermal pollution

  5. Pollution management strategies • Reduce • Reuse • Recycle

  6. Reduce • Use less!

  7. Reuse • Reusing means the product is not waste. • E.g. reusable water bottles, cloth grocery bags

  8. Recycle • Involves • Collecting • Separating • What ends up being recycled depends on economics • How valuable is the material? • Aluminum cans have a high cost of production so recycling is worthwhile economically. • A recycled aluminum can saves enough energy to run a TV for 3 hours!

  9. Disposal of Waste • If waste materials are not recycled or reused, there are 2 options • 1. landfill • 2. incineration

  10. Landfills • Main method of disposal • Waste is taken to a site and buried. • Hazardous waste can be buried along with everything else • What do you think would need to be considered when choosing a landfill site?

  11. MAPLE Valley landfill • Where your trash goes

  12. Landfills • Liners prevent leachate from seeping out

  13. How Many Years? • How long do you think these objects take to break down in a landfill? • Disposable diaper • 500-600 years • Cotton T-shirt • 6 months • Leather belt • 50 years • Styrofoam cup • 1 million years • Glass Bottle • 1 million years

  14. How Many Years • Plastic Bottle • 1 million years • Paper Bag • 2 months • Banana Peel • 1 month • Aluminum can • 500 years • Block of Wood • 10 years

  15. Incinerators • Burn waste at high temps up to 2000 ºC • Some incinerators are hooked up to turbines that create electricity • Called waste-to-heat energy incineration • Some incinerators don’t capture heat • Causes air pollution • Release of dioxins (plastics) • Heavy metals (batteries) Waste to heat energy incinerator in Italy

  16. Organic Waste • Composting • Can be used for fertilizers

More Related