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Water Pollution - PowerPoint PPT Presentation

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Water Pollution. Asra and Sabrina. Bibliography. What is Water Pollution?. Contamination of water bodies (lakes, rivers, oceans, groundwater, etc.) when pollutants are discharged into water bodies without proper treatment Major Global concern

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Water pollution l.jpg

Water Pollution

Asraand Sabrina

What is water pollution l.jpg
What is Water Pollution?

  • Contamination of water bodies(lakes, rivers, oceans, groundwater, etc.)

  • when pollutants are discharged into water bodies without proper treatment

  • Major Global concern

  • Leading world wide cause of death and diseases (est. 14,000 die everyday)


      • Chemical indicators of water quality: take sample of the water and measure concentration of chemicals. High concentration=polluted water

      • Biological Indicators of water: examine invertebrates living in the water. Many=unpolluted water. Little or no life=polluted water.

Causes and effects l.jpg
Causes and Effects

  • Domestic

    • Sewage and Wastewater

      • Major problem

      • Developing countries – people lack basic sanitation

      • Leads to water related illnesses

      • Sometimes pumped untreated into the sea

      • Completely natural substance that should be broken down harmlessly in the environment

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  • Industrial

    • use freshwater to carry away waste from the plant and into water bodies

    • Waste produced by industries can get into the water supply and contaminate water bodies

    • Radioactive and toxic materials from industries

    • Acid rain falls into lakes, streams and ponds, which lowers the overall pH of the waterway, and kills vital plant life thereby affecting the whole food chain.

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  • Agricultural

    • Farms use large amounts of toxic pollutants such as herbicides and pesticides

    • Also use large amounts of chemical fertilizers that are washed into the waterways and damage the water supply and the life within it

    • Livestock grazing near water sources results in organic waste being produced and getting washed into the waterways, leading to eutrophication.

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  • Prevention

    • Education- Make people aware of the effects of water pollution and the problems associated with it

    • Implementation of Laws- Environmental laws can make it tougher for people to pollute, but to be really effective they have to operate across national and international borders

    • Little things you can do by yourself:

      • Don’t throw paints, oils or other forms of litter down the drain.

      • Use environmentally friendly household products such as washing powder, household cleaning agents and toiletries.

      • Don’t overuse pesticides and fertilizers

      • Don’t throw litter into rivers, lakes or oceans

Treatment l.jpg


    • System to bring the oxygenated water at the bottom of a river to the surface.

    • Continuous Laminar Flow Inversion and Oxygenation.

  • Disinfecting Sewage and Wastewater

    • Universally implemented in almost all major cities.

    • Done by process of dilution and chlorination.

  • Planting around river corridors

    • Used to conserve the condition of current, healthy rivers.

Rhine l.jpg

  • Longest River in Europe

    • Starting in Switzerland, ending past the Netherlands

  • Post WW2 (around 1970s)

    • Known as "Europe's Sewer", and

      "The Dead River"

    • Pollution from waste dumping,

      especially from surrounding mines

      and factories.

  • Did not start cleaning until 1986

    • Awareness became apparent after a fire in the Sandoz Chemical Plant (Switzerland)

    • Made the water surrounding the area undrinkable

Bibliography l.jpg

  • "Water pollution - Wikipedia, the free encyclopedia." Wikipedia, the free encyclopedia. N.p., n.d. Web. 11 Apr. 2011. <http://en.wikipedia.org/wiki/Water_pollution#Agricultural_wastewater>.

  • "Water pollution: An introduction - causes, effects, types, and solutions." Explain that stuff! Science and technology made simple. N.p., n.d. Web. 11 Apr. 2011. <http://www.explainthatstuff.com/waterpollution.html>.

  • "The Causes of Water Pollution « Water Pollution." Water Pollution. Web. 07 Apr. 2011. <http://www.water-pollution.org.uk/causes.html>.

  • "Cleaning the Rhine: An Incredible Human Achievement." CLEAN GANGA: SANKAT MOCHAN FOUNDATION. Web. 09 Apr. 2011. <http://www.cleanganga.com/articles/mar3.php>.

  • "What Can You Do? « Water Pollution." Water Pollution. N.p., n.d. Web. 9 Apr. 2011. <http://www.water-pollution.org.uk/preventingyou.html>.

  • Figure 1"EARTH :: ENVIRONMENT :: WATER POLLUTION image - Visual Dictionary Online." Visual Dictionary Online. N.p., n.d. Web. 11 Apr. 2011.


  • All other pictures are from Clip Art.

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  • "Cleaning up the Filthy River Rhine." Welcome Back to The Frost Blog. Web. 10 Apr. 2011. <http://www.martinfrost.ws/htmlfiles/aug2006/filthy_rhine.html>.

  • "CURE River Keeper Award." Clean Up the River Environment (CURE) - Organizing Citizens to Restore and Protect the Upper Minnesota River Watershed. Web. 10 Apr. 2011. <http://www.curemnriver.org/>.

  • "Disinfection of Water and Wastewater." Norweco, Norwalk Wastewater Equipment Company - Water Treatment Products, Systems and Chemicals. Web. 11 Apr. 2011. <http://www.norweco.com/html/lab/Disinfection.htm>.

  • "A Natural Method of River Improvement - CLEAN-FLO." Lake Aeration, Pond Aeration Systems & Water Aeration System: Lake Aerators - CLEAN-FLO. Web. 12 Apr. 2011. <http://www.clean-flo.com/systems/river-restoration/>.

  • "Teachers' Domain: Pollution Along the Rhine River." Teachers' Domain: Home. Web. 08 Apr. 2011. <http://www.teachersdomain.org/resource/ess05.sci.ess.watcyc.rhine/>.

  • "Waste Disposal & Treatment - Cleaner River = Global Warming?" Eng-Tips Forums. Web. 11 Apr. 2011. <http://www.eng-tips.com/viewthread.cfm?qid=263528>.

  • "Water Pollution." MBGnet. Web. 09 Apr. 2011. <http://www.mbgnet.net/fresh/pollute.htm>.