Effects of Air Pollution in Delhi

1950 Words Feb 12th, 2007 8 Pages
Introduction

Air is the ocean we breathe. Air supplies us with oxygen which is essential for our bodies to live. Air is 99.9% nitrogen, oxygen, water vapor and inert gases. Human activities can release substances into the air, some of which can cause problems for humans, plants, and animals.

There are several main types of pollution and well-known effects of pollution which are commonly discussed. These include smog, acid rain, the greenhouse effect, and "holes" in the ozone layer. Each of these problems has serious implications for our health and well-being as well as for the whole environment.

One type of air pollution is the release of particles into the air from burning fuel for energy. Diesel smoke is a good example of this
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Data from continuous monitoring of air quality reveals that suspended particulate matter levels still far exceed stipulated standards, there is a significant downward trend as indicated in the following tables.

Due to phenomenal growth in the number of motor vehicles Delhi and power generation based on a fired power stations, total amount on coal fired power stations, and total amount of pollutants received by the city is around 3000 tonnes as compared to 100 tonnes a decade ago. Sixty five percent of these pollutants are produced by motor vehicles. Annual average maximum, levels of SPM in Delhi's air has increased from 7.6 times the permissible limit in 1987 to 16.7 time in 1995.

The steep increase in vehicle population has resulted in a corresponding increase in pollutants emitted by vehicles. Petrol consumption has increased from 133 thousands tons in 1980-81 to 449 thousand tons in 1996-97 and HSD consumption from 377 thousands tons to 1,234 thousand tons during the same period. Two wheelers, which constitute 66% of the vehicles registered in Delhi, are the major source of air pollution.

Thermal power plants contribute to 13% of air pollution. The main pollutants are stack emissions; fly ash generations and fugitive emission in coal handling. All thee thermal
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