Grand smog of london

1. Grand Smog of London
Presented By
Jagniyant Lunagariya
MTech-Environmental Engineering
Marwadi University

2. What is Smog?
Smog is a kind of air pollution, originally named
for the mixture of smoke and fog in the air.
Smog is composed of nitrogen oxides, sulphur
oxides, ozone, smoke or particulates among
others.
Human-made smog is derived from coal
emissions, vehicular emissions, industrial
emissions, forest and agricultural fires and
photochemical reactions of these emissions.

3. Introduction
The Grand/Great Smog of London, or Great Smog of
1952 sometimes called the Big Smoke was a severe air-
pollution event that affected the British capital of London
in December 1952.
It lasted from Friday, 5 December to Tuesday, 9
December 1952 and then dispersed quickly when the
weather changed.
It was so thick it brought road, air and rail transport to a
virtual standstill. This was certainly an event to
remember.

4. Causes
• Cold Weather
• Temperature Inversion
• Air Pollution

5. Temperature Inversion

6. Sources of Pollution
• Household Coal Burning
• Coal Fired Power Plant Station
• Amount of Pollutant Released
-1000 Tonne Smoke Partical
-140 Tonnes of Hydrochloric Acid
-370 Tonnes of Sulfur Dioxide
-800 Tonnes of Sulfuric Acid
*UK MET office

7. Effect on London
• Visibility
• Tranportation Ceased
• Daily Life Disturbed
• Cancellation of Concert

9. Health Impact
• 12000 People Died
• 4000 Died During Smoke Period
• 200000 Pepole Injured
• Death of Cattel
• Respiratory Track Diseases
• Hypoxia
• Bronchitis

10. Environmental Impact
• Awareness
• City of London Act-1954
• Clean Air Act-1956
• Financial Incentives

11. Conclution
What Can we do to Prevent Situation?
-Do not use Coal with High Sulfur Content
-Switch to Clean Sources of Energy
-Cleaner Production Technology

12. Thank You