LM7 - Ambient Air Quality and Emission standards..pptx

1. KGiSL Institute of Technology
(Approved by AICTE, New Delhi; Affiliated to Anna University, Chennai)
Recognized by UGC, Accredited by NBA (IT)
365, KGiSL Campus, Thudiyalur Road, Saravanampatti, Coimbatore – 641035.
Department of Information Technology
Name of the Faculty : Mr.Mani Deepak Choudhry
Subject Name & Code : OCE551/Air Pollution and Control Engineering
Branch & Department : III IT & Information Technology
Year & Semester : III / V
Academic Year :2022-23

2. SYLLABUS
UNIT 1 - INTRODUCTION
Structure and composition of Atmosphere – Definition, Scope and
Scales of Air Pollution – Sources and classification of air pollutants and
their effect on human health, vegetation, animals, property, aesthetic
value and visibility- Ambient Air Quality and Emission standards.
OCE551/APCE/III IT/V SEM/KG-KiTE

3. OCE551/APCE/III IT/V SEM/KG-KiTE
Course Outcomes
CO 1 Understand the nature and characteristics of air pollutants,
noise pollution and basic concepts of air quality management K2 LEVEL

4. OCE551/APCE/III IT/V SEM/KG-KiTE
Topic
1. Structure and composition of Atmosphere
2. Definition, Scope and Scales of Air Pollution
3. Sources of air pollutants
4. Classification of air pollutants and their effect on human health
5. Effect of air Pollutants on Vegetation & animals
6. Effect of air Pollutants on Property aesthetic value and visibility
7. Ambient Air Quality and Emission standards.

5. OCE551/APCE/III IT/V SEM/KG-KiTE
Ambient Air Quality and Emission standards.
• The U.S. National Ambient Air Quality Standards (NAAQS) are limits on
atmospheric concentration of six pollutants that cause smog, acid rain, and other
health hazards.
• Established by the United States Environmental Protection Agency (EPA) under
authority of the Clean Air Act NAAQS is applied for outdoor air throughout the
country.

6. OCE551/APCE/III IT/V SEM/KG-KiTE
Ambient Air Quality and Emission standards.
• The CAA established two types of standards for ambient air quality. Primary
standards concern the minimum level of air quality necessary to keep people from
becoming ill and therefore are aimed at protecting public health.
• The primary standards are intended to provide an adequate margin of safety for
the public, which has been defined to include a representative sample of so-called
sensitive populations, such as the elderly, children, and persons with asthma.
• The secondary standards are aimed at the promotion of public welfare and the
prevention of damage to animals, plants, and property.

7. OCE551/APCE/III IT/V SEM/KG-KiTE
Ambient Air Quality and Emission standards.
• The six criteria air pollutants (CAP), or criteria pollutants, for which limits are set in the NAAQS are
ozone (O3), atmospheric particulate matter, lead, carbon monoxide (CO), sulfur oxides (SOx), and
nitrogen oxides (NOx)
• There are two categories of particulate matter: that with dimensions of 10 micrometres (μm) or less (1
μm = 10−6 metre) and those of 2.5 μm or less.
• Ambient air quality is measured by using a pollutant standards index (PSI).
• PSI data are relayed to areas with populations of more than 200,000 people, where the public can use
the information to assess air pollution levels.
• The PSI focuses on roughly 24-hour periods, allowing individuals to take precautionary measures to
avoid acute health effects.

8. OCE551/APCE/III IT/V SEM/KG-KiTE