Collecting Electrodes are the collection surface made of sheet metal on which the particulate matter is collected after being negatively charged within the gas passage of the ESP. Designs of the plates vary from manufacturer to manufacturer. These plates are secured to the ESP shell at ground potential and serve as the positive anode of the gas passage.
Rapper Systems enable the dislodging of the dust collected on the surface of the Collecting Plates and Emitting Electrodes. Sometimes these are also used for the GD Screens and Hopper Walls. They hit the Collecting Plates and the Electrodes as per a pre-set time interval, which leads to the dust getting dislodged and falling into the hoppers below.