ppt on pollution

1. POLLUTION
(A Global Problem )

2. Definition
• Pollution is the introduction
of contaminants into the natural
environment that cause adverse
change.

3. • Pollution has become a serious issue
after World War II in developing countries
due to unchecked rapid industrialization.
Pollution is the root cause of many
diseases that kill and disable living
organisms.

5. Contamination by
Industries

6. Types
Air Pollution.
Water Pollution.
Noise Pollution.
 Soil pollution.

7. Air Pollution

8. Air Pollution
• Air pollution is the introduction
of particulates, biological molecules,
or other harmful materials
into Earth's atmosphere, causing
diseases, damage to other living
organisms such as animals and food
crops, or
the natural or environment.

9. Sources Of Air Pollution
• Household combustion.
• Motor vehicles.
• Industries.
• Forest fires.

10. Pollutants causing Air
Pollution……
• Carbon monoxide.
• Carbon dioxide.
• Nitrogen dioxide .
• Sulfur dioxide.

11. How to control air
pollution?
• Maintaining a healthy distance between
the industrial and residential areas.
• The chimneys should be constructed tall
in size so that the emissions must be
released higher up in the environment
• The coal fuel should be replaced with
gas fuel to control the air pollution.
• The mining area should be planted with
trees.

13. Water Pollution…
• Water pollution is the contamination of
water bodies (e.g. lakes, rivers, oceans,
aquifers and groundwater).
• Water pollution occurs when pollutants are
discharged directly into water bodies
without adequate treatment to remove
harmful compounds.

14. Polluted Water…
Domestic sewage.
Industrial wastewater.

15. Water Pollutants….
• Plastics.
• Pesticides.
• Heavy metals.
• Sewage.
• Radioactive waste.

16. Treating Polluted Water...
• solid particles and inorganic material can
be removed by the use of filters.
• Use of biological filters which naturally
degrade the organic waste material.

17. Noise Pollution..Noise Pollution

18. Noise Pollution
• Noise is generally used as an unwanted
sound, or sound which produces
unpleasant effects and discomfort on the
ears.

19. Sources of Noise
Pollution…
• Machines.
• Transportation systems.
• Motor vehicles.
• Aircrafts.
• Trains.

20. Effects of Noise Pollution
• Noise pollution affects both health and
behavior.
• Unwanted sound (noise) can damage
psychological health.
• Hypertension .
• High stress levels .
• Hearing loss.
• sleep disturbances, and other harmful
effects.

21. SOIL POLLUTION

22. Soil Pollution..
Soil pollution is caused by the presence of
chemicals or other alteration in the natural
soil environment. It is typically caused by
industrial activity agricultural chemicals
improper disposal of waste.

23. Soil Contaminating
Chemicals…..
• Petroleum hydrocarbons.
• Pesticides
• Lead and Other heavy metals.

24. How to control soil
pollution?
Afforestation

25. How to control soil
pollution?
• Limit the use of fertilizers and pesticides.
• Treating Wastes of industries.
• Treating nuclear waste.
• Proper disposing of plastics and other
garbage materials.
• The Afforestation and reforestation must
take place.

26. A Single Solution…..
• Go green.
• Reduce