a colegio lope de vega rev.1
TRANSCRIPT
COMENIUS PROGRAM: W.A.T.E.R
LOPE DE VEGA - INTERNATIONAL SCHOOL
Mercedes Gil, 05th December 2008
ONE WORLD
Everything you know is changing
Comenius Program: W.A.T.E.R
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.
Just a short time ago…
Introduction
Environment & contamination/pollution
• Water Pollution.
• Atmospheric Pollution
• Waste Products.
• Soil Contamination.
We have 4 items to consider:
WATER
Water Contamination
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.
Water Contamination
The concern of the environmental contamination has reached its maximum limit at the end of this last century, due to:
• Great industrial growth,
• Great growth of the population,
The has been aggravated by the concentration of industries and population, in delimited areas.
Water Contamination, why???
• Domestic households, industrial and agricultural
practices produce wastewater that can cause pollution
of many lakes and rivers.
• Sewage is the term used for wastewater that often
contains faeces, urine and laundry waste,…
• Sewage is treated in water treatment plants and the
waste is often disposed into the sea.
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
Chimney(emission)
Air concentrati
on measureme
nts
Air concentration measurements
Atmosphere Pollution
Atmospheric Diffusion
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.
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.
ACID RAIN
Atmosphere Pollution
Destruction of the stratospheric (25km) ozone layer of the
earth's atmosphere due to the release of
chlorofluorocarbons, or CFCs, into the environment.
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. .
http://www.nasa.gov/home/index.html
OZONE DEPLETION
Atmosphere Pollution
Consequences:
• Increased UV: Ozone, while a minority constituent
in the earth's atmosphere, is responsible for most of
the absorption of UVB radiation.
• Biological effects of increased UV and microwave
radiation from a depleted ozone layer.
OZONE DEPLETION
Atmosphere Pollution
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
Global Warming & Green House Effect
Earth Earth
Light Energy
Heat radiation
Normal [CO2]
Less radiation
High [CO2]
SOIL
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.
Soil Contamination
• Waste site / dumping site: waste disposal
grounds.
• Spills of industries.
• Storage of chemical products.
High Risk:
• Next to population
• Groundwater
Soil Contamination, why?
FOOD SUPPLY
ATMOSPHERIC POLLUTION: EMISSIONS
DEPOSITION
SOIL CONTAMINATION
DIRECT CONTACT WASTE
CONTAMINATION GROUNDWATER
CONTAMINATION:SUPERFICIAL WATER
FOOD SUPPLY
Contamination: water, atmosphere and soil?
I must admit that I should look after all
this….
But where
is my
benefit???
Good Luck