AIR POLLUTION

50 %
50 %
Information about AIR POLLUTION
Entertainment

Published on May 2, 2010

Author: aSGuest43957

Source: authorstream.com

PRESENTATION ON : PRESENTATION ON AIR POLLUTION Presented By : Virendra Kumar AIR POLLUTION : AIR POLLUTION 1. Introduction 2. Sources of Air Pollution 3. Harmful Effects of Air Pollutions 4. Air Pollution Major Tragedy 5. Control of Air Pollution INTRODUCTION : INTRODUCTION (a) Formal Definition (b) Composition of Air 1. FORMAL DEFINITION : FORMAL DEFINITION The air Act of Govt. of India defines air pollution as “Air pollution means any solid , liquid or gaseous substances present in the atmosphere in such concentrations that may tend to be injurious to human beings or other living creatures or plants or property or enjoyment” (a) COMPOSITION OF AIR : COMPOSITION OF AIR » Nitrogen - 78.084% » Oxygen – 20.946% » Argon – 0.934% » carbon dioxide – 0.033% » Other gaseous – 0.003% (ex.-neon ,helium ,hydrogen ,xenon etc.) (b) SOURCES OF AIR POLLUTION : SOURCES OF AIR POLLUTION (a)Natural Sources (b) Man-Made Sources 2. NATURAL SOURCES : NATURAL SOURCES » Decay of organic matter (plant and animal remains ) » Dust Storms » Forest Fires » Volcanoes (a) Slide 8: Dust storms MAN-MADE SOURCES : MAN-MADE SOURCES » Burning of fuels like wood , coal etc » Exhaust gases emitted by motor vehicles » Industries pollute air » Thermal power plants pollute air by emitting fly Ash » Nuclear power plants pollute by releasing radioactive rays » Deforestation pollutes air by increasing the amount of carbon dioxide in it » Use of chlorofluorocarbons pollute by depleting the ozone layer (b) Slide 11: Gases emitted by Motor vehicles Slide 12: Industries pollute HARMFUL EFFECTS OF AIR POLLUTION : HARMFUL EFFECTS OF AIR POLLUTION » Air pollution can cause breathing and diseases such as asthma , lung cancer , tuberculosis etc. » Air pollution can cause carbon monoxide poisoning » Air pollution can cause acid rain which damages crop plants , trees , buildings and makes the soil acidic. » Air pollution causes depletion of ozone layer » Air pollution causes green house effect 3. AIR POLLUTION MAJOR TRAGEDY : AIR POLLUTION MAJOR TRAGEDY » Donora(USA),oct.1948 :- Due to Anti cyclic weather (no air movement) inversion , 20 persons died , about 7000 ill. » London , Dec.1952 :– Due to Extensive use of coal , the smoke mixed with fog became dangerous smog , 4000 died , thousands ill. » London , Dec.1962 :- Due to Shallow inversion , fog gases, 700 persons died. » Bhopal (INDIA) , Dec.1984 :- In Union Carbide industry toxic gas “METHYLE ISOCYNATE “ leaked accidentally and about 2500 died and over 100000 were severely affected. 4. CONTROL OF AIR POLLUTION : CONTROL OF AIR POLLUTION » Controlling of coal dust by sprinkling water on it before handling in a thermal power plant » Preventive maintenance by repairing leaky valves in advance so as to prevent the leakages of the harmful gases in air » Selection of proper material. For example using low sulfur coal reduces the Sulfur dioxide problem 5. For dealing with the particle matter the following control technologies are used : For dealing with the particle matter the following control technologies are used » Settling chambers » Cyclone separators » Fabric filters » Electrostatic precipitators » wet collector For gaseous pollutants the following control technologies are used : For gaseous pollutants the following control technologies are used » Condensation » Absorption » Adsorption » Combustion THE END : THE END

Add a comment

Related presentations

Related pages

Air pollution - Wikipedia, the free encyclopedia

Air pollution is the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing diseases, death to ...
Read more

Air Pollution Facts, Air Pollution Effects, Air Pollution ...

Learn about the causes and effects of Air Pollution at National Geographic, and what you can do to help.
Read more

Air Pollution Causes, Facts, and Solutions to Air ...

NRDC: NRDC provides information on the Clean Air Act, air pollution causes & effects. NRDC works to strengthen & enforce the Clean Air Act and educate the ...
Read more

WHO | Air pollution

Air pollution: WHO health topic page on air pollution provides links to descriptions of activities, reports, publications, statistics, news, multimedia and ...
Read more

Air Pollution: MedlinePlus - National Library of Medicine ...

Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended ...
Read more

Air pollution in India - Wikipedia, the free encyclopedia

Air pollution in India is quite a serious issue with the major sources being fuelwood and biomass burning, fuel adulteration, vehicle emission and traffic ...
Read more

What is Air Pollution for children? - Learning can be fun ...

Find out what air pollution is. What makes the air dirty and poisonous, and how air pollution can affect humans, plants and animals
Read more

Air pollution - Simple English Wikipedia, the free ...

Air pollution is the pollution of the air. It can affect people and other living things. Many of the world's large cities today have bad air quality. Even ...
Read more

Air Pollution: Understanding the Problem and Ways to Help ...

Understand and identify the issues concerning air pollution here. Enlighten yourself and discover ways to improve conditions within your personal space!
Read more

Air pollution - European Environment Agency's home page —

Air pollution harms human health and the environment. In Europe, emissions of many air pollutants have decreased substantially over the past decades ...
Read more