Transcript Diapositiva 1

Make the recycling collection
Try to make the recycling collection both at home
and at school
Use your bike
Don’t use private cars if you do short journeys
Use public transports
Don’t pollute the air and use the public transport to
move
Use glasses and plates
Don’t use plastic plates and bags
Use biodegradable bags
When you go the grocery store use biodegradable
bags
Use eco-friendly nappies
Traditional nappies’s degradation requires 500 years
Use low consumption light bulbs
they consume 5 times less and last 10 times longer
Use rechargeable batteries
Batteries can be recharged up to 500 times
Classe III C
Glossary
Classe IIIB
Chlorofluorocarbons
Chemical hazardous compounds widely used as refrigerants,
cleaning solvents and aerosol propellants
Ecology
The study of the relationship between plants,
animals, people and their environment
Acid rain
It is caused by acid discharged into the atmosphere
from factories
Green peace
Active environmentalist group
Greenhouse
Ozone
Thin layer of triatomic oxygen that absorbs the Sun’s
ultraviolet radiation
Pollution
The contamination of water, air and atmosphere by
means of poisonous chemicals and other
substances
Biodegradable
What decomposes without any special treatment
and is thrown away without causing pollution
Overpopulation
Excessive population of an area causing depletion of natural
resources and environmental deterioration.
Melting of ice caps
When a high latitude region that is covered with ice
becomes smaller and slowly disappears
Global warming
The rise in the average temperature of the earth’s atmosphere
and of oceans
Burning plastic releases dioxins and nanoparticles,
highly polluting substances for man
The solution is one:
Pretend that plastic bags do not exist:
If you throw the plastic in a landfill it takes
more than 1000 years before it decomposes
Consume local products:
the transport of goods consumes oil and
increases the greenhouse effect.
Get the sun. How?
With the solar pannels.
Change the car: choose natural gas or gpl.
And, above all, use it as little as possible
To store food use glass and aluminum
Use energy saving light bulbs: they
consume 5 times less and last 10
times longer.
Disposable? No, thanks.
Use rechargeable batteries: batteries
can be recharged up to 500 times.
Recycling is the smartest and the
most important contribution you
can give to the environment
”together we make the difference”
… a set of strategies to recover materials from
waste to be re-used
Classe IIIC
GLASS
PAPER
Paper
AND
CARDBOARD
PLASTIC
ALUMINIUM
Spreading
of mixture
and production
of these
materials
Collection
Pick
to separate
it from
impure
materials
Reduction
in mixture
Pressing
and
Tying bales
Fusion and
Solidification
with the
formation
of a new
container
Collection
Separation
of the
different
types of
glass
Transport
in glassware
Crushing
Which
becomes
a secondaryRaw
material
Fusion
at 800° and
production of
ingots
Pressing
To bales
Collection
Separation
from magnetic
materials
throught a
separator
Granulation
and production of
new objects
Trituration
And
Dessication
Collection
Separation
From
different
materials
Transformation
into
Electrical,thermal
Energy and
Composting
Collection
Treatment
Composting is a biological process that brought to the
production of a mixture called compost consisting of
animals or vegetal residues.
Recycling…
… reuse the raw materials, reduce waste in landfils,
reduce pollution, save energy and money.
Throughout most of history, the «amount» of waste generated by
humans was insignificant
Low
population
density
Low
exploitation of
natural
resources
Irrilevant
amount of
waste
Common waste produced during pre- modern times was mainly ashes and
human «biodegradable waste» and these were released back into the
ground locally, with minimum «environmental impact»
Tools made out of wood or metal were generally reused or passed down
through the generations
However, some civilizations do seem to have been more profligate in their
waste output…
Maya, for instance, used to have a fixed monthly ritual, in which the people
of the village would gather together and burn their rubbish in large
«dumps»
An example of Maya’s dump
The modern era represents a time of changes:
following the onset of industrialization and the sustained urban growth of
large population centres, the build up of waste in the cities caused a rapid
deterioration of sanitation and the general quality of urban life.
industrialization
Waste
increasing
Deterioration of
the conditions of
life
Waste management consists of different stages :
 collection of rubbish

transport

disposal

managing

monitoring

recycling
« Waste management» usually relates to the materials produced by the
human activities and the process is generally undertaken to reduce their
effect on health, the environment and the quality of urban life.
There are different kinds of waste materials: solid, liquid, gaseous and
radioactive materials.
Waste management practices aren’t equal all over the world, in fact they
can differ for developed and developing countries, for urban and rural
areas, and for residential and industrial producers.
Management of non-hazardous waste residential and institutional waste in
metropolitan areas is usually the responsibility of local government
authorities, while commercial and industrial waste management is usually
the responsibility of local, national or international authorities.
Liquid waste
Solid Waste
Gaseous waste
Radioactive waste