: Focused on treating exhaust gases after pollutants have been generated using specialized "add-on" equipment. Key Control Technologies

: Aimed at reducing pollutant generation at the source through process modifications, fuel switching (e.g., using cleaner energy), or improving combustion efficiency.

Devices are selected based on the type of pollutant (particulate vs. gaseous), concentration, and temperature. Particulate Matter (PM) Control

Air Pollution Control Engineering, Third Edition - Amazon.com

Engineering solutions are generally divided into two main categories:

Air pollution control engineering focuses on the principles and practices of reducing harmful emissions from industrial, mobile, and stationary sources. This field integrates chemical and mechanical engineering to design systems that either prevent pollutant formation or remove contaminants before they reach the atmosphere. Core Control Strategies