Abstract: A pollution control device having a tank provided with an inlet and an outlet arranged for passing a gaseous medium to be cleaned into the tank and through a bath of washing solution held in the tank. A blower unit, mounted outside of the tank, forces the gaseous medium through the bath. A line connecting the blower unit to the bath passes a quantity of washing solution through the blower unit for cooling the unit. Baffles are arranged partially immersed in the bath in the tank for creating a large surface across the gaseous flow and facilitating separation of particulate matter from the medium being cleaned. The baffles are advantageously in the form of a plurality of cylinders each constructed from a mesh material and tiered in one or more substantially vertical channels arranged within the tank.