If we want to have a future, we have to think about it. The future is in our global family with our common home and environment – the Earth.
The air pollution is the introduction of new unusual chemical mechanical or biological substances for air as well as the change in their average annual concentration. These substances cause harm to living organisms or environmental damage. Air pollution has an important role; also it provides a strong influence on economics after the industrial revolution.
The rapid increase of the world population, the scientific and technical progress and arms entirely change the situation on the planet last 100 years. In the near past, human activities also had a negative effect, but not so high, how it is now. Anthropogenic effect on the biosphere has intensified recently.
A main source of dust is emissions from burning solid fuel in thermal power stations, households and industry. The real situation is getting worse by the air detention in height due to the closed nature of certain fields. A main source of dust is emissions from burning solid fuel in thermal power stations, households and industry. The real situation is getting worse by the air detention in height due to the closed nature of certain fields.
Sulphur dioxide pollution (SO2) associated with the burning of low quality coal, and non-ferrous metallurgy. Sources of hydrogen sulfide are oil refining industry, cellulose and paper industry and factories, producing fibers.
Reactions of nitrogen with oxygen leading to the formation of nitrogen oxides in nature, occur under the influence of electrical discharges (lightning). Sources of ammonia are mineralization of humus in soil, decomposition of nitrogen containing substances in tailings and coal burning.
Lead aerosols are formed in production of lead, in his secondary extraction from old batteries and other waste, in painting with paints containing lead and others. The main source of lead aerosols are primarily gasoline engines.
These gases have a low boiling point and are used in refrigeration as solvents in aerosol dispensers in deodorants and chemicals. Today, they are replaced by other substances. Chlorine atoms act as a catalyst in the dissociation of ozone to oxygen.
Greenhouse effect Carbon dioxide and other gases emissions causing the so-called greenhouse effect. In this way the reflected solar radiation from the Earth (mostly infrared) can not dissipate into space, returns and warms the earth more
The ozone layer serves as a protective barrier to living organisms from deadly ultraviolet rays not missing a significant part of them. Sunlight breaks down high energy molecules of these substances. Chlorine and fluorine atoms liberate and they destroy ozone molecules-О3.
It is caused of acid oxides, mostly sulfur dioxide, which converts into sulfuric acid when it falls in the air in the presence of moisture.
Air Pollution in certain urban areas which is due to the large masses stagnant air
Respiratory problems Cardiovascular diseases Asthmatic and allergic problems Developmental disorders of the nervous system Cancer Existence of slow growth and etc.
To replace solid fuels with liquid or gaseous fuels. To use fuels with lower ash and sulfur content. To close down obsolete and physically worn power capacities, because it is impossible they to become ecologically-friendly.
To change the structure of our energy equipment. To start using renewable resources for energy sources which are untypical for our country. To use central heating for houses as long as to introduce dust-collecting equipment for energy and industrial sources of dust. To use hydrogen fuel. To plant and look after flower alleys. To protect forests and parks.
Here’s What We Do at Our SSchool We are trying to change students’ attitude towards nature improving our ecological culture; We collect dangerous waste as batteries in special containers situated in different places at our school;
We throw away waste separately in specific containers which are in front of our school; We use paper or cloth shopping bags because plastic ones have a very long period of degradation and during their burning they emit harmful substances;
Internet Reference Book issued by Young Ecologist Club Data supplied by RIOOSV- Pazardzhik MOSV Information Centre STATE OF THE WORLD-2010
Silviya Boteva – 10th grade Margarita Todanova – 10th grade Manager: Elena Gamizova Teacher of Chemistry and Environmental Protection This project has been funded with support from the European Commission. This presentation reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.