Alternating Current Corona neutralization of charged filters media

Accumulation of electric charges on the dielectric surfaces (filter media, nonwoven media, etc) is frequently at the origin of severe hazards. The aim of this paper is to propose an effective and simple experiential method to neutralize these electrical charges using AC corona discharge. We were interested in the active neutralization of filters media based on the principle of ambient air ionization by alternating corona discharge at industrial frequency (50 Hz) in a configuration system of the “triode“ type.