Date post: | 04-Jan-2016 |
Category: |
Documents |
Upload: | lillian-hamilton |
View: | 216 times |
Download: | 1 times |
Air Quality Assessment in Populated Area, Houston
Focused on NOx & SO2
Eon S. Lee
Order
• Outdoor Pollution Source
• Common Pollutants in Urban Area
• Population & NOx Distribution
• Annual NOx Concentration
• Annual SO2 Concentration
• Annual NOx & SO2 Concentration
• Conclusion
Outdoor Pollution Source
Industrial Emission (NOx, SO2) Transportation (NOx, SO2)
Incomplete Combustion
Common Pollutants in Urban Area
• A complex mixture including varying proportions of air, pollutants, humidity and allergens.
• Ozone, generated by reaction of NOx;NO2 +O2 NO +O3
• SO2, Acid rain, Toxic (not focused)
• Heat Island Effect• Occurs in the middle of Houston• 2.1 million people exposed.• Causes cancer and bronchial diseases
Population & NOx Distribution
NOx emission by year
SO2 Emission by year
Annual NOx & SO2 Concentration
Conclusion• Overall NOx concentration is acceptable.• Less considered for SO2 concentration.• Necessary to make air quality standards
for consider building-concentrated area with large population/area ratio.
• Apply the heat island effect.• Personal protection.
Any Question?