airpollution.ppt(kenny)

What would you do to change air pollution ?
• 1. People could reduce air pollution by saving energy and reduce harmful emissions from vehicle exhausts and power stations and so on. • 2. Factory chimney can be fixed with devices to cut down air pollution. so that it give off less polluted air materials. • 3. People would be less likely to use their cars but take public buses as they can. • 4. Scientists have been studying new ways of generating electricity to replace gasoline that may be less damage to the environment. • 5. Try best to design and develop clean cars and clean fuels . • 6. Sponsor to develop ecological protection to reinforce virescence and landscaping .
Air Pollution Case Study
As all know that clean air is very important to our good
health , wherever you go and whatever you do, you are always surrounded by a sea of gases that we call air. If there are impurities in the air, that may be absorbed by our bodies and make us ill. We need clean air urgently, but air pollution is one of the globally major problems of the modern world, especially in cities. Although almost all of countries have been trying hard to prevent and control air pollution , however we it may be that we still have a long way to go before that we have a clean world ,and believe it seems to be no end tasks to be required to do all along.
Fine particles come from a variety of sources:
• • • • • diesel trucks and buses construction equipment power plants woodstoves wildfires
Also, Chemical reactions in the atmosphere can transform gases into fine particles.
Prioritized control scenarios
According to the cost-benefit analysis, the resulting ranking of the emission control scenarios is 1. 2. 3. 4. 5. centralized heating, natural gas utilization, clean coal technologies, implementation of productivity policies, dust control.
Dispersion modelling Monitoring Emissions Air Quality
(Air pollution concentrations)
Exposure assessment Abatement measures/ regulations Control options Damage assessment Cost analysis
What are the environmental effects of air pollution?
• Aggravated asthma
• Coughing
• Acute respiratory symptoms • Chest pain • Decreased lung function (shortness of breath) • People with existing heart and lung disease, as well as the elderly and children, are particularly at risk • Premature death . Cause global warming, acid rain and destroy the ozone layer.
What are the causes of air pollution ?
• 1. Sandstorms ,the dust and gases from volcano pollute the earth’s atmosphere naturally. • 2.Pollution from factories, power stations and vehicles exhaust pump harmful gases into the air . • 3.Also smoking cigarettes adds to the general levels of air pollution as well as damage our health as cigarette contains chemicals that can cause cancer and lung illness .
Why is Ozone bad to breathe?
• The average adult breathes enough air to fill over 3,000 balloons each day. Children breathe even more! • Ozone can irritate lungs , and cause inflammation much like a sunburn on your lungs. • Ozone can aggravate respiratory illnesses like asthma. • 10 to 20% of summertime respiratory-related hospital visits in the Northeast are associated with ozone pollution. • Children and people with chronic lung diseases are particularly at risk.
• Industrial location adjustment
S. Larssen: Beijing 20 Jan-02: AQ China 1
ቤተ መጻሕፍቲ ባይዱ
Norwegian Institute for Air Research
What is Ozone?
• An odorless, colorless gas composed of three oxygen atoms.
What Can You Do?
Reduce vehicle emissions:
Drive less
Keep cars well maintained and tires properly inflated Turn off the engine when your vehicle is not in motion Purchase low-emitting and fuel efficient vehicles Share a ride, take public transportation ,even by bike, or walk .
• Particulate matter causes premature deaths every year in the world. • Fine particles from Diesel exhaust can cause lung cancer.
Air Quality Management Model
What is Particulate Matter?
• particles of different substances suspended in the air • in the form of solid particles and liquid droplets
Where does Particulate Matter come from?
Air Pollution Case Study
CLEAN AIR !
THANK YOU !
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• Ozone in the upper atmosphere protects us from the sun’s harmful ultraviolet rays.
• At ground-level in the air we breathe, ozone (smog) poses serious risks to human health.
Categories of Air Pollution control options in China
• Economic structure adjustment • Energy structure adjustment • Cleaner production • Process technological. improvement • Co-generation and district heating • Ecological improvement • End-of-pipe technologies (emission cleaning) • Improving and implementation of environmental laws and regulations
Why are Fine Particles bad to breathe?
• Scientific studies have linked fine particles with a series of significant health problems.
• Fine particles easily reach the deepest parts of the lungs.
What Can You Do?
Conserve electricity:
do not over-cool or over-heat buildings turn off lights and appliances when not in use Purchase electronics/appliances with energy star labels