Air pollution control technologies

Commonly used air pollution control technologies are cyclone separator, fabric filler, settling chamber, wet collector and electrostatic precipitator. For fine polluted particles, fabric filter, electrostatic precipitator or wet collector is used. For bigger particles, either cyclone separator or settling chamber is used. The gaseous pollutants are controlled by condensation, absorption, combustion and adsorption. In a cyclone separator, using proper centrifugal forces, cyclones are made to collect bigger size particles from a gaseous stream. Electrostatic precipitator use electrostatic principles to remove fine particles contained in an exhaust gas. High efficiency, low power consumption, easy maintenance and high safety are the features of electrostatic precipitator. In a wet collector, pollutants are removed from gaseous stream by dissolving the gaseous contaminants in the liquid stream and by entrapping the solids in the liquid.