Dust Collector

Introduction

The advent of scientific and technological revolution has brought tremendous benefits to mankind and also given rise to many problems related to our environment. Rapid industrialization as associated with scientific exploitation of natural resources and this has resulted in contamination of three major constituents of our environment- air , water, and soil.

Combustion process is the main source of elements that pollute the atmosphere. A 500MW thermal power plant produces 2000 tones of ash every day, it also produces about 50MT of sulphur id oxide.

Effects Of Air Pollution

The consequences of air pollution have to be gauged from the factors like

• First the amount of substances pollution the atmosphere are eventually accumulating.
• The distribution of pollutants is not uniform and in certain places, their concentration is in admissibly high.
• Very small concentrations of certain substances can be highly dangerous.
• The damages caused by air pollution is enormous. It involves losses in all the spheres of the national economy.

Particulate mission

Smog is closely linked to air pollution. Many cities in the world, particularly in London catastrophe of 1952, roughly 4000 people are known to have lost their life due to smog. The phenomenon of smog is a mixture of smoke and fog, has been reputed to temperature inversion, the heavier cold air saturated with industrial and transport emission remains near the grounds compressed under a dome off light warm air. Hence it is necessary for industry to let the particulate emission to a maximum height possible. Pollution control board framed minimum height required for letting out the smoke in atmosphere.

Carbon Mono Oxide

The unburnt carbon mono oxide in the presence of oxygen reacts and form carbon di oxide. This carbon mono oxide loss reduce efficiency of power cycle and also it affects human population causing branch its problem.

Carbon Di Oxide

The effects of air pollution cannot be complete without reference to the green house effect. The dramatic increase in the carbon di oxide level in todays atmosphere is 27% higher than the year 1850. scientists believe that the growing burden of carbon di oxide and other gases are the causes for change in earths climate. Carbon di oxide allows most of the solar radiation to penetrate the atmosphere but prevents part of the heat re radiated by land and water bodies from escaping into space. It is estimated that the earths mean temperature could rise 1.5 to 4.5 ºC by the middle of next century if green house gases continue to increase at current rate. This impact could be even greater at the poles. The rise in global temperature could result in shift in rain fall patterns, melting of the polar ice caps and raising of ocean levels.