Wet-Type Dust Collectors

Wet dust collectors draw the contaminant laden airstream into the unit where typically the first stage of filtration is impact into the tank of water at the base of the system.  This causes any larger particulate to be removed from the airstream and sink to the bottom of the tank.  The air then is drawn through a scrub section where the system fan pulls water from the tank up through a baffle type system resulting in a turbulent, water laden environment.  The fine dust is removed from the airstream by the water and comes to rest in the tank of water at the base of the unit, rendering it inert.  Mist impingers/eliminators are typically in place after the scrub to remove mist and water droplets and the air is then discharged through the fan and in some cases into a media after filter housing.

Before purchasing a wet dust collector customers should send samples of their material to be tested for combustibility and properties and characteristics.  In some cases certain dusts are not “wettable” and may not sink if introduced into water, resulting in the dust being re-entrained into the airstream and discharging through the collector.