A Venturi scrubber consists basically of a centrifugal lung (which functions to separate the solid fraction from the liquid) and a Venturi column.

The Venturi column consists of a cylinder that has in its middle section a decrease in diameter. The reason for this variation in diameter is due to the Venturi principle: "the pressure of a fluid current increases with decreasing speed". Therefore, in the column a pressure variation will cause precipitation of smoke-borne solid pollutant particles.

At the top of the column are placed Venturi nozzles that spray water, so as to slow the passage of the smoke, the water then collects the particles precipitated in the column and flows into the cistern located below the centrifugal lung.

The Venturi scrubber is used to remove dust particles contained in industrial gases, in particular the removal of small particles contained in hazardous and corrosive gases.