Pollution

POLLUTION Pollution is an undesirable change in the physical, chemical or biological characteristics of air, water and soil.

TYPES OF POLLUTION

Air pollution

Water pollution

Land pollution

AIR POLLUTION Addition of any unwanted substances occurred in the air, then it is called air pollution

CAUSES

URBANISATION

INDUSTRIALISATION

AUTOMOBILES

EFFECT OF URBANISATION •

Malaria and dengue fever are two of the common diseases spreading as a result of urbanization

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Harmful gases due to waste material causes many diseases such as bronchitis, pneumonia

EFFECTS OF INDUSTRIAL POLLUTION •

Uncontrolled cutting of trees result in increase in carbon dioxide level in the atmosphere

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Respiratory system of effected by cancer, asthma

EFFECT OF AUTOMOBILE POLLUTION • • • • •

Impair the body’s immune system Reduce the release of oxygen to body tissues Increase a person’s risk of cancerrelated death Contribute to birth defects, low birth weight, and infant deaths Harm blood vessels in healthy individuals

Water pollution When any undesirable substance mixes with water it become contaminated this results in water pollution

Sources of water pollution

Compounds of calcium and magnesium ,microorganisms, oils heavy metals, detergents, domestic water, pesticides, fertilizers. industrial water and radioactive waters, etc are commonly found in polluted water

Harmful effects of water pollution 1 Mercury, cadmium, cobalt and other impurities dissolved in water causes Diarrhea 2 Water pollution is responsible for death of microorganisms and fisher 3 Depletion of oxygen content in water, mostly due to speeding of oil spills on surface of water, affects respiration in organisms

Prevention and Control of Water pollution 1 Sewage Treatment • Sewage should be converted into useful organic waste before being discharged into water bodies • Sewage water is mixed with air and bacteria which digest organic waste. • The water free form microorganism it is treated by various methods lick chlorination, evaporation, exchange and absorption 2 Oxidation pond • National Environment, Engineering Research Institute Nagpur development a method • By which polluted water is treated • The polluted water is stored in a sallow pond which is called oxidation pond

Land Pollution •

Land pollution is defined as the build-up in soils of persistent toxic compounds, chemicals, salts, radioactive materials, or disease causing agents, which have adverse effects on plant growth and animal health.

Harmful effects of Land pollution

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Land pollution can affect wildlife, plants, and humans in a number of ways, such as: Cause problems in the respiratory system Cause problems on the skin Lead to birth defects Cause various kinds of cancers

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PO P O ST

THANK YOU SANJAY Prajapati