Water PollutionWater PollutionWater PollutionWater PollutionEnvironment

o Presenter: Hye-young Yoono Instructor: Lyra Riabovo ESL Level 5

Outline

1. Usefulness of water

2. Today’s water pollution

3. Causes of water pollution

4. Solutions for keeping our water clean

5. References

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?

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 limited and threatened by pollution.

Today’s Dying Water

Child and Dying Fish Dying Duck by Oil Spill

Dying Ocean because of Dumping and Floating waste

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?

What are the Causes?

Toxic Matter Agricultural Chemicals Oil Spill

Other factors Sediment, Acids, Pathogens, Organic Matter, etc.

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. 

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.

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.

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.

What are Solutions?

Prevention Clean-up Conservation by yourself

How can we solve the problem?

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

Clean-up

Physical treatment

Filtration. By this time the liquid should be almost clear and have very few particles in it.

Chemical treatmentAfter filtration, the water requires addition chemicals.

Biological treatment

Using bacterial is critical for the purification of water.

12 THINGS YOU CAN DO TO SAVE WATER

1. Check toilets, pipes, and faucets for leaks. 2. Don't use the toilet as a trash can. 3. Put a plastic bottle in the toilet tank so that your toilet uses

less water. 4. Take shorter showers. 5. Help a grown-up install water-saving showerheads in your

home. 6. Take baths instead of showers. 7. Turn off the water while brushing your teeth. 8. Use automatic dishwashers only when you have a full load. 9. Use the washing machine only when you have a full load. 10. Turn off the water while cleaning vegetables. 11. Keep drinking water in the refrigerator. 12. If washing dishes by hand, don't leave the water running.

Conclusion

References http://cse.cosm.sc.edu/env_sci/Impacts/Pollution/Water/Int

ro.htm http://www.epa.gov/gmpo/edresources/water_5.html http://www.soton.ac.uk/~engenvir/environment/water/wat

er.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