Air Pollution

The presence of gases, dust particulates, fumes or odour in large amounts which leads to harmful damage to the living beings and environment is called as air pollution. The air pollutants from automobile emissions, chemical odours and factory smoke are the sources.

The emission of particulate matter which is microscopic solid or liquid in air is particulate emission. Particulate emissions are visible in the form of soot or smoke.  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.

Industries emitting significant levels of air pollutants are regulated by means of environmental approvals or injunctions. This includes permits and inspection, statutory orders, general guidelines etc.

 

Air pollution is a major environment-related health threat to children and a risk factor for both acute and chronic respiratory disease. While second-hand tobacco smoke and certain outdoor pollutants are known risk factors for respiratory infections, indoor air pollution from solid fuels is one of the major contributors to the global burden of disease. In poorly ventilated dwellings, indoor smoke can be 100 times higher than acceptable levels for small particles. Exposure is particularly high among women and young children, who spend the most time near the domestic hearth. 

  • Air pollution emissions from various sources
  • Gaseous emissions
  • Particulate emissions
  • Source correction methods
  • Pollution control equipment
  • Diffusion of pollutant in air
  • Vegetation
  • Zoning
  • Regulations governing air pollution
  • Air Quality Monitoring
  • Air Quality Engineering

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