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