Wet precipitators are mainly used for cleaning waste gases from chemical processes - rarely in waste incineration plants.

Structure and function is basically the same as that of the dry precipitator, apart from the fact that a liquid film is formed at the precipitating electrodes, which rinses off the solid particles continuously.

Wet precipitators are mainly used for cleaning steam-saturated gases. Good separation efficiency for aerosols and particulates is achieved in combination with wet scrubbers or other flue gas cleaning components.