1 / 30

Topic 5 – Pollution Management

Topic 5 – Pollution Management. Topic 5.1 – Nature of Pollution. Pollution. The contamination of the Earth and atmosphere to such an extent that normal environmental processes are adversely affected. Can be natural/human caused Can be deliberate/accidental. Pollution.

misty
Download Presentation

Topic 5 – Pollution Management

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. Topic 5 – Pollution Management Topic 5.1 – Nature of Pollution

  2. Pollution • The contamination of the Earth and atmosphere to such an extent that normal environmental processes are adversely affected. • Can be natural/human caused • Can be deliberate/accidental

  3. Pollution • Can be matter (solid, liquid, gas) or energy (noise, light, heat)

  4. Major Pollution Sources: Combustion of Fossil Fuels • Carbon Dioxide • Greenhouse gas • Sulfur Dioxide • Acid deposition (tree/fish death) • Photochemical Smog • Respiratory problems • Carbon Monoxide • Binds hemoglobin, can cause death

  5. Major Pollution Sources: Domestic Waste • Organic Waste (food/sewage) • Eutrophication • Fills landfills • Waste Paper/Plastics/Glass/Metals • Fills landfills • Reduces natural resources • Energy used to produce causes pollution

  6. Major Pollution Sources: Industrial Waste • Heavy Metals • Poisoning • Fluorides • Poisoning • Heat • Reduces dissolved oxygen • Lead • Disabilities in children • Acids • Corrosive

  7. Major Pollution Sources: Agricultural Waste • Nitrates • Eutrophication • Organic Waste • Eutrophication • Pesticides • Accumulate up food chains

  8. Point Source Pollution • Pollution released from a single, identifiable source. • Examples: • A factory smokestack or exhaust pipe • A sewage pipe • A specific incident • A very bright light

  9. Non-point Source Pollution • Release of pollutants from dispersed origins • Examples: • Agricultural runoff • Vehicle exhaust • Urban runoff

  10. Topic 5 – Pollution Management Topic 5.2 – Detection and Monitoring of Pollution

  11. Pollution Monitoring • Biochemical Oxygen Demand (BOD) • A measure of the amount of oxygen required by micro-organisms to break down the organic material in water

  12. Pollution Monitoring • Indicator Species • Organisms that show something about the environment by their presence, absence, or abundance.

  13. Topic 5 – Pollution Management Topic 5.3 – Approaches to Pollution Management

  14. Pollution Management Srategies • Replace-Regulate-Restore

  15. Pollution Management Strategies • Replace • Develop alternate technologies • Adopt alternate lifestyles

  16. Pollution Management Strategies • Regulate • Setting and imposing standards • Introducing measures for extracting the pollutant from waste

  17. Pollution Management Strategies • Restore • Extracting and removing pollutant from ecosystem • Replanting and restocking with plant/animal populations

  18. Topic 5 – Pollution Management Topic 5.4 - Eutrophication

  19. Eutrophication • The addition of excess nutrients to a water ecosystem, causing algae to bloom • Usually nitrates and phosphates • Detergents • Fertilizers • Livestock drainage • Sewage

  20. Eutrophication Process • Fertilizers wash into lake • Algae bloom, light to plants decreases, plants die • More algae=more zooplankton=more small fish • Algae die and are decomposed by bacteria, oxygen level goes down, everything dies • Turbidity increases

  21. Eutrophication Management • Replace • Stop/change fertilizers/waste • Plant buffer zones • Regulate • Limit pollutants • Restore • Pump air through lake • Dredge lake bottom • Remove algae physically or by algicides • Reintroduce species

  22. Topic 5 – Pollution Management Topic 5.5 – Solid Domestic Waste

  23. Types of Solid Domestic Waste • Garden Waste/Kitchen Waste • Glass, wood, metal, plastics • Paper • Textiles • Diapers

  24. Solutions to Waste • Landfill • Compost • Recycle (or Reuse) • Incineration

  25. Topic 5 – Pollution Management Topic 5.6 – Depletion of Stratospheric Ozone

  26. Atmosphere Structure • Main Components: • Nitrogen (78%) • Oxygen (20%) • Argon (1%) • CO2 (.038%) • Temperature and pressure vary with altitude

  27. Ozone Layer • Ozone (O3) is more concentrated in the low stratosphere (12-20mi) • O3 absorbs UV radiation in a process that converts O2to O3 and back

  28. UV Radiation (UV-B) • Causes eye damage, cataracts, sunburn, and skin cancer in humans (and some animals) • Can damage plants and phytoplankton

  29. Ozone Depleting Substances • CFCs • Refrigerants • 1987 Montreal Protocol called for a sharp reduction in CFCs and other Ozone Depleting Substances

More Related