Air Quality & Air Pollution
Air quality and pollution are crucial aspects of environmental engineering, encompassing the composition and properties of air, the types of pollutants, their monitoring, and standards for air quality. Control measures range from source control to urban planning strategies aimed at reducing emissions and improving air quality. Understanding the chemistry of combustion and the impact of various factors on emissions is vital for effective pollution management.
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4.1Common Hazards
This section highlights the common hazards faced by workers in industries,...
What we have learnt
- The composition of dry air primarily consists of nitrogen, oxygen, argon, and trace gases.
- Common air pollutants include particulate matter, sulfur dioxide, nitrogen oxides, carbon monoxide, and volatile organic compounds.
- Effective air pollution control measures include source management, emission control devices, and urban planning.
Key Concepts
- -- Air Composition
- Dry air is composed mostly of nitrogen (78.09%), oxygen (20.95%), and argon (0.93%), along with trace amounts of other gases.
- -- Common Air Pollutants
- Key pollutants include PM10, PM2.5, sulfur dioxide, nitrogen oxides, carbon monoxide, ozone, and VOCs, each having specific health and environmental impacts.
- -- Monitoring Techniques
- Various methods such as ambient air monitoring, stack monitoring, and continuous monitoring systems are employed to evaluate air quality.
- -- Air Quality Standards
- These are established limits set by authorities to define safe thresholds for various pollutants in order to protect human health and environmental integrity.
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