8

AIR POLLUTION: POLLUTANT CONTROL SYSTEM

8.1 PARTICULATE EMISSION CONTROL

Particulate matter (PM) is the general term used for a mixture of solid particles and liquid droplets suspended in air. Particulate matter emitted in gaseous streams consists of discrete and minute suspended particles. The particle sizes range from 100 μm down to 0.1 μm and even less. U.S. EPA defines PM10 as particle matter having a nominal aerodynamic diameter of 10 micrometre (μm) or less. In general, coarse PM refers to PM10, while fine PM refers to PM2.5.

8.1.1 Classification of Particulate Control Equipments

The particulate control equipments, based on the removal mechanism, can be classified into three general types, such as,

  1. Force-field settlers—which rely on ...

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