Pollution Control & Sustainable Environment

Air Pollution and Treatment

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A common type of air pollution happens when people release particles into the air from burning fuels. This pollution looks like soot, containing millions of tiny particles, floating in the air. Another common type of air pollution is dangerous gases, such as sulphur dioxide, carbon monoxide, nitrogen oxides and chemical vapours. These can take part in further chemical reactions once they are in the atmosphere, creating acid rain and smog. Other sources of air pollution can come from within buildings, such as second-hand smoke. Finally, air pollution can take the form of greenhouse gases, such as carbon dioxide or sulphur dioxide, which are warming the planet through the greenhouse effect. According to the EPA, the greenhouse effect is when gases absorb the infrared radiation that is released from the Earth, preventing the heat from escaping. This is a natural process that keeps our atmosphere warm.

There are some effective methods which are used to control the air pollution. These are used to filter and purify the air which is polluted. Diffusion of the contaminants in the atmosphere is another approach to the control of air pollution. Dilution of pollutants in air depends on atmosphere temperature, speed and direction of the wind. Vegetation is another way to control air pollution by utilizing carbon dioxide and releasing oxygen in the form of photosynthesis. This purifies the air. Selection of separate areas for industries which would be far from the residential areas is referred as zoning.