ONE WORLD Everything you know is changing Comenius Program: W.A.T.E.R
<ul><li>Sewage/Spills to rivers and seas, atmospheric emissions and waste products produced by little existing industry and the establishments of population, could be assimilated by the receptor , so that auto purification processes was created, and to the end of just a short time, the characteristics of the affected environment was sufficiently acceptable. </li></ul>Introduction Just a short time ago…
Environment & contamination/pollution <ul><li>Water Pollution. </li></ul><ul><li>Atmospheric Pollution </li></ul><ul><li>Waste Products. </li></ul><ul><li>Soil Contamination. </li></ul>We have 4 items to consider:
Water Contamination <ul><li>Water pollution is the contamination of water bodies such as lakes, rivers, oceans , and groundwater caused by human activities, which can be harmful to organisms and plants that live in these water bodies. </li></ul>
Water Contamination <ul><li>The concern of the environmental contamination has reached its maximum limit at the end of this last century, due to: </li></ul><ul><li>• Great industrial growth, </li></ul><ul><li>• Great growth of the population, </li></ul><ul><li>The has been aggravated by the concentration of industries and population, in delimited areas. </li></ul>
Water Contamination, why??? <ul><li>Domestic households, industrial and agricultural practices produce wastewater that can cause pollution of many lakes and rivers. </li></ul><ul><li>Sewage is the term used for wastewater that often contains faeces, urine and laundry waste,… </li></ul><ul><li>Sewage is treated in water treatment plants and the waste is often disposed into the sea. </li></ul>
Effects of water contamination No use for sports, on holidays,… No use of water for industries FOOD Harmful to the health of humans and animals
Atmosphere Pollution Chimney (emission) Air concentration measurements Air concentration measurements Atmospheric Diffusion
<ul><li>A complex chemical and atmospheric phenomenon that occurs when emissions of sulphur and nitrogen compounds and other substances are transformed by chemical processes in the atmosphere. </li></ul><ul><li>Often it occurs far from the original sources , and then deposited on earth in either wet or dry form. The wet forms (precipitation) are popularly called "acid rain" and fall as rain, snow, or fog . </li></ul>Atmosphere Pollution ACID RAIN
<ul><li>Destruction of the stratospheric (25km) ozone layer of the earth's atmosphere due to the release of chlorofluorocarbons , or CFCs, into the environment. </li></ul><ul><li>The detailed mechanism by which the polar ozone holes form is different from that for the mid-latitude thinning, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and bromine. . </li></ul><ul><li>http://www.nasa.gov/home/index.html </li></ul>Atmosphere Pollution OZONE DEPLETION
<ul><li>Consequences: </li></ul><ul><ul><li>Increased UV : Ozone, while a minority constituent in the earth's atmosphere, is responsible for most of the absorption of UVB radiation. </li></ul></ul><ul><ul><li>Biological effects of increased UV and microwave radiation from a depleted ozone layer. </li></ul></ul>Atmosphere Pollution OZONE DEPLETION
Global Warming & Green House Effect Global warming, is the increase in the average measured temperature of the Earth's near-surface air and oceans since the mid-20th century, and its projected continuation. Greenhouse gases, which include water vapour, carbon dioxide and methane , warm the atmosphere by efficiently absorbing thermal infrared radiation emitted by the Earth’s surface, by the atmosphere itself, and by clouds.
Global Warming & Green House Effect Earth Earth Light Energy Heat radiation Normal [CO 2 ] Less radiation High [CO 2 ]
<ul><li>Is caused by the presence of man-made chemicals or other alteration in the natural soil environment. This type of contamination typically arises from the rupture of underground storage tanks, application of pesticides, percolation of contaminated surface water to subsurface strata, oil and fuel dumping , leaching of wastes from landfills or direct discharge of industrial wastes to the soil. </li></ul>Soil Contamination
<ul><ul><li>Waste site / dumping site: waste disposal grounds. </li></ul></ul><ul><ul><li>Spills of industries. </li></ul></ul><ul><ul><li>Storage of chemical products. </li></ul></ul><ul><li>High Risk: </li></ul><ul><ul><li>Next to population </li></ul></ul><ul><ul><li>Groundwater </li></ul></ul>Soil Contamination, why?
Contamination: water, atmosphere and soil? FOOD SUPPLY ATMOSPHERIC POLLUTION: EMISSIONS DEPOSITION SOIL CONTAMINATION DIRECT CONTACT WASTE CONTAMINATION GROUNDWATER CONTAMINATION: SUPERFICIAL WATER FOOD SUPPLY
I must admit that I should look after all this…. But where is my benefit???