An electrostatic precipitator is a device used to remove particles from industrial exhaust gases. It works by charging dust and other particles as they pass through an electric field. The charged particles are then attracted to oppositely charged plates, where they collect and can be removed. These devices are commonly used in power plants, cement factories, and other industries to reduce air pollution. By capturing harmful particles, electrostatic precipitators help improve air quality and comply with environmental regulations, making them an important technology for cleaner air.