Water PollutionWater Pollution

Jad Lucero, CJ Epino, Viel Jad Lucero, CJ Epino, Viel Salvador, Kevin Esguerra, Salvador, Kevin Esguerra, Gideon Isidro, Enrique TanGideon Isidro, Enrique Tan

OutlineOutline What is water pollution?What is water pollution? Why is there water pollution?Why is there water pollution? Sources of water pollutionSources of water pollution Why does water pollution concern us?Why does water pollution concern us? What diseases are caused by water What diseases are caused by water

pollution?pollution? How do we deal with water pollution?How do we deal with water pollution?

What is water pollution?What is water pollution?

- contamination of water by foreign contamination of water by foreign matter such as micro-organisms, matter such as micro-organisms, chemicals, industrial or other chemicals, industrial or other wastes, or sewage. Such matter wastes, or sewage. Such matter deteriorates the quality of the water deteriorates the quality of the water and renders it unfit for its intended and renders it unfit for its intended usesuses

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What is water pollution?What is water pollution?Major pollutants:Major pollutants: Sewage and other oxygen-demanding Sewage and other oxygen-demanding

wastes wastes Infectious agents Infectious agents Plant nutrients that can stimulate growth Plant nutrients that can stimulate growth

of aquatic plantsof aquatic plants Exotic organic chemicals, including Exotic organic chemicals, including

pesticides, various industrial products of pesticides, various industrial products of other organic compoundsother organic compounds

PetroleumPetroleum

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What is water pollution?What is water pollution?Major pollutants:Major pollutants: Inorganic minerals and chemical Inorganic minerals and chemical

compounds. compounds. Sediments consisting of soil and Sediments consisting of soil and

mineral particles mineral particles Radioactive substances from the wastes Radioactive substances from the wastes

of Uranium and Thorium mining and of Uranium and Thorium mining and refining, from nuclear power plants, refining, from nuclear power plants, and from the industrial, medical, and and from the industrial, medical, and scientific use of radioactive minerals. scientific use of radioactive minerals.

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Why is there water Why is there water pollution?pollution? Occurs when a body of water is adversely Occurs when a body of water is adversely

affected due to the addition of material to affected due to the addition of material to the water the water

Point sources of pollution occur when the Point sources of pollution occur when the polluting substance is emitted directly into polluting substance is emitted directly into the waterwaythe waterway

Non-point source occurs when there is Non-point source occurs when there is runoff of pollutants into a waterway, for runoff of pollutants into a waterway, for instance when fertilizer from a field is instance when fertilizer from a field is carried into a stream by surface runoff   carried into a stream by surface runoff  

Sources of water Sources of water pollutionpollutionIndustrial wastesIndustrial wastes Include many chemicals that are Include many chemicals that are

dumped into water systems dumped into water systems Forms when moisture in the air reacts Forms when moisture in the air reacts

with nitrogen oxide and sulfur oxide with nitrogen oxide and sulfur oxide from factories and power plants that from factories and power plants that burn coal or oilburn coal or oil

Nitric and sulfuric acids are produced, Nitric and sulfuric acids are produced, which fall to the earth with rain or snowwhich fall to the earth with rain or snow

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Sources of water Sources of water pollutionpollutionSewageSewage- Consists of human wastes, garbage, and Consists of human wastes, garbage, and

water that has been used for laundering water that has been used for laundering or bathingor bathing

Agricultural chemicals and wastes Agricultural chemicals and wastes Chemical fertilizers and pesticides that Chemical fertilizers and pesticides that

have been put into the land are carried have been put into the land are carried by rain water into streams by rain water into streams

Cnimal wastes also cause water pollution Cnimal wastes also cause water pollution

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Why does water pollution Why does water pollution concern us?concern us?We use water for:We use water for: taking a bathtaking a bath           drinkingdrinking           washing things and;washing things and;           cookingcooking

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Why does water pollution Why does water pollution concern us?concern us?What happens when water gets What happens when water gets

polluted?polluted? soil will be pollutedsoil will be polluted plants will be affectedplants will be affected our crops will be pollutedour crops will be polluted animals will be affectedanimals will be affected we will be affectedwe will be affected

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Why does water pollution Why does water pollution concern us?concern us?What if this continues happen?What if this continues happen? nobody would want to take a bathnobody would want to take a bath there would be nothing to cook there would be nothing to cook

withwith there would be nothing to wash there would be nothing to wash

withwith this may end life here on earththis may end life here on earth

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Why does water pollution Why does water pollution concern us?concern us?  Water purifiers will:Water purifiers will: be sold more than beforebe sold more than before people will depend on itpeople will depend on it people will throw more trash people will throw more trash

because of the presence of a filterbecause of the presence of a filter      Taking no action when this happens Taking no action when this happens

is bad!is bad!

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How do we deal with water How do we deal with water pollution?pollution? Primary treatment- grit removal, Primary treatment- grit removal,

screening, flocculation, and screening, flocculation, and sedimentationsedimentation

Secondary treatment- oxidation of Secondary treatment- oxidation of organic matter by means of biologically organic matter by means of biologically active sludge, which is filtered outactive sludge, which is filtered out

Tertiary treatment- advanced biological Tertiary treatment- advanced biological methods of nitrogen removal methods of nitrogen removal

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