Air pollution control equipment's are used to regulate various system emissions. It can be found in a wide range of manufacturing, processing, research and production facilities. In some cases, air cleaning and purifying systems are used to provide a healthy and contaminant-free work environment, while in others they are in place to prevent the escape of harmful chemicals, vapors or duct into the air.

Common varieties of air pollution control equipment include scrubbers, dust collectors, cyclones, Bag house filters and electrostatic precipitators.

Cyclones

Cyclones, a fairly widespread type of control equipment, spin polluted vapors at high speeds. Gravity forces the heavier materials (the pollutants and dust) to the edge of the spinning vapors, where it is collected. Air flows in a helical pattern, beginning at the top(wide end) of the cyclone and ending at the bottom (narrow end) before exiting the cyclone in a straight stream through the center of the cyclone and out the top. Larger (denser) particles in the rotating stream have too much inertia to follow the tight curve of the stream and strike the outside wall, then fall to the bottom of the cyclone where they can be removed.

The lighter pollution free fumes are then released. These systems, along with a tremendous variety of other specialized or unique pollutions control devices are in place at factories and production facilities like woodworking shops, pharmaceutical manufactures, cotton gins, rock crushers, cement plants.