Scrubbers can be grouped into 2 types. Type 1 is for particulate collection, where equipment like wet cyclones, cyclonic scrubbers and venturi scrubbers are involved, and type 2 is for gaseous absorption removal, where equipment like static packed bed, dynamic packed bed, baffle plate scrubbers or impingement plate scrubbers are involved.In its simplest form, a venturi scrubber consists of a restriction in a gas duct into which water is introduced. The scrubbing occurs at the restriction where high gas velocities atomize the water into fine droplets. After scrubbing, the gas and water are separated in a cyclonic separator, the water gravitating to a pumping tank for re-use and the clean gas leaving from the top of the separator.