Electrostatic precipitator is a device which uses electrostatic charges for precipitating ( or remove away ) dust particles from gases ( and mostly used for filtration ). The principal behind this device is that the gases don't get charged and ionize ( so easily! ) but unlike, the dust partical they can be charged easily.So, this device consist of conductor plates, which are supplied with high voltage when gas pass thorugh this condutor plates, the aerosol particals present in gases are charged by these conductor plates and gets attatched to the plate due high electrostatic formed force ( remember the high voltage ) and the gas is filtered :) .
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