A3.10.1 Physical
A3.10.1.1 Physical Technology & Air Pollution
Airborne particles can be removed from a polluted airstream by a variety of physical processes. Common types of equipment for collecting fine particulates include cyclones, scrubbers, electrostatic precipitators, and baghouse filters. Once collected, particulates adhere to each other, forming agglomerates that can readily be removed from the equipment for disposal.
Specific characteristics of the pollutant will determine the most suitable method, including particle size, size distribution in the air stream, shape, density, reactivity. In addition, the removal efficiency requirements, flow rate and air stream characteristics (pressure, temperature, and viscosity) will affect selection choice.