Describe the method of electrostatic precipitators for removing particulate matter with a diagram.

(N/A) Electrostatic precipitator is the most widely used method for removing particulate matter from industrial exhaust.
$1$. It can remove over $99$ percent of particulate matter present in the exhaust from a thermal power plant.
$2$. It consists of electrode wires that are maintained at several thousand volts,which produce a corona that releases electrons.
$3$. These electrons attach to dust particles,giving them a net negative charge.
$4$. The collecting plates are grounded and attract the charged dust particles.
$5$. The velocity of air between the plates is kept low enough to allow the dust to fall.
$6$. $A$ scrubber can remove gases like sulfur dioxide $(SO_2)$ by passing the exhaust through a spray of water or lime.