A wet scrubber is an air pollution control device that uses a scrubbing fluid or solution for removing contaminants from an air stream. This solution can be water-based or non-aqueous, which allows the device from an air stream. This solution can be water-based or non-aqueous, allowing the device to remove a variety of liquid, solid, and gas contaminants. You can find wet scrubbers in various industrial applications like industrial boilers, incinerators, and metals processing, asphalt, as well as chemical, and fertilizer production. Wet scrubbers can depend from application to application.