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