The two designs these systems are produced in is a dry baghouse
and a wet scrubber
. In addition to the solid particles that ordinary dust collectors handle, scrubbers do a more in depth job. Either baghouse scrubber cleans harmful gases flowing through a factory premises with various solvents that vacuumed air is passed through.
The dry baghouse system typically uses a series of fabric filters to capture particulate matter. The filters are made of materials such as woven or felted fabrics, and are arranged in a series of compartments or chambers. As the polluted air passes through the filters, the particles become trapped on the surface of the fabric.
Wet scrubbers, on the other hand, use a liquid spray to trap pollutants. The polluted air is passed through a chamber where it comes into contact with a liquid spray. The liquid may be water or a chemical solution, depending on the type of pollutant being removed. As the polluted air passes through the liquid spray, the pollutants become trapped in the liquid. The clean air is then released back into the atmosphere.