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Water Pollution

Water Pollution. Environment Presenter: Hye-young Yoon Instructor: Lyra Riabov ESL Level 5. Outline. Usefulness of water Today’s water pollution Causes of water pollution Solutions for keeping our water clean References. Water. The most important resource.

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Water Pollution

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  1. Water Pollution Environment Presenter:Hye-young Yoon Instructor:Lyra Riabov ESL Level 5

  2. Outline • Usefulness of water • Today’s water pollution • Causes of water pollution • Solutions for keeping our water clean • References

  3. Water • The most important resource. • People can survive without food for several weeks, but without water we would die in less than one week. During summer time, do you want to go swimming or go to beach?

  4. What on Earth do you Know about Water? • Cover 80%of Earth’s surface. • Only 1% of this water is fresh we can use. • 97% - Saltwater • 2% - Frozen in glaciers • Use 168 gallons of water a day. • Move in a never-ending cycle • Water you drink = Water a dinosaur had drunken • Be limitedandthreatened by pollution.

  5. Today’s Dying Water Dying Duck by Oil Spill Child and Dying Fish Dying Ocean because of Dumping and Floating waste

  6. For Water Make a choice, where do you want to live? Unfortunately, today’s water looks more like in the right picture. Also, water condition is becoming even worse than ever. What are causes of water pollution? What do we have to do for saving our water?

  7. What are the Causes? • Toxic Matter • Agricultural Chemicals • Oil Spill • Other factors • Sediment, Acids, Pathogens, Organic Matter, etc.

  8. Toxic Matter • A great of poisonous compounds get into water. • Minamata Disease In the 1950s, industries around Minamata Bay in Japan discharged so much mercury into the bay that people were poisoned by mercury that had found its way into the local seafood. 

  9. Agricultural Chemicals • Be applied to fields to stimulate the growth of plants. • Enter streams and lakes. • Be occurred seriously damage at a lake or stream. • Lead to a drop in the population of fish.

  10. Oil Spill When oil is spilt at sea, a number of weathering processes produce changes in the physical and chemical properties of the oil's behavior at sea.

  11. Recently, the oil tanker SS Minnow attempted to  dock  in Gilligan's Bay. The ship  accidentally  ran  aground and is leaking oil!! However, not all marine oil pollution is sourced from oil spills.

  12. What are Solutions? • Prevention • Clean-up • Conservation by yourself How can we solve the problem?

  13. Prevention • Appropriate legislation • Pollution prevention is an aim of lawmaking. • As simple as regulations about dumping used motor oil onto the ground or into sewage system • As complex as the regulations controlling the effluent from industries or municipal sewage treatment facilities • Don’t released previously • Toxic or disease-causing materials • So harmful that natural systems can’t handle

  14. Clean-up • Physical treatment Filtration. By this time the liquid should be almost clear and have very few particles in it. • Chemical treatment After filtration, the water requires addition chemicals. • Biological treatment Using bacterial is critical for the purification of water.

  15. 12 THINGS YOU CAN DO TO SAVE WATER • Check toilets, pipes, and faucets for leaks. • Don't use the toilet as a trash can. • Put a plastic bottle in the toilet tank so that your toilet uses less water. • Take shorter showers. • Help a grown-up install water-saving showerheads in your home. • Take baths instead of showers. • Turn off the water while brushing your teeth. • Use automatic dishwashers only when you have a full load. • Use the washing machine only when you have a full load. • Turn off the water while cleaning vegetables. • Keep drinking water in the refrigerator. • If washing dishes by hand, don't leave the water running.

  16. Conclusion

  17. References • http://cse.cosm.sc.edu/env_sci/Impacts/Pollution/Water/Intro.htm • http://www.epa.gov/gmpo/edresources/water_5.html • http://www.soton.ac.uk/~engenvir/environment/water/water.html • http://images.google.com/images?q=water+pollution&svnum=10&hl=en&lr=&ie=UTF-8&oe=UTF-8&start=60&sa=N • http://www.ukrivers.net/pollution.html • http://www.units.muohio.edu/dragonfly/water/downtubesmap.shtml • http://www.sintef.no/units/chem/environment/lab/Oil-spill.htm • http://kr.imagesearch.yahoo.com/search/detail?p=imgid%3A275448&q=%bc%f6%c1%fa+%bf%c0%bf%b0&&num=10

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