With a neat labelled diagram explain the use of Electrostatic precipitator.

Explanation

Electrostatic precipitator has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons. These electrons attach to dust particles giving them a net negative charge. The collecting plates are grounded and attract the charged dust particles. The velocity of air between the plates must be low enough to allow the dust to fall.
Importance Electrostatic precipitator can remove over `99%` particulate matter present in the exhaust from a thermal power plant.