Scrubber System Scrubber systems are a diverse group of air pollution control devices
that can be used to remove particulates and/or gases from industrial exhaust streams.
Traditionally, the term "scrubber" has referred to pollution control devices that
used liquid to "scrub" unwanted pollutants from a gas stream. Recently, the term
is also used to describe systems that inject a dry reagent or slurry into a dirty
exhaust stream to "scrub out" acid gases. Scrubbers are one of the primary devices
that control gaseous emissions, especially acid gases.
The exhaust gases of combustion may at times contain substances considered harmful
to the environment, and it is the job of the scrubber to either remove those substances
from the exhaust gas stream, or to neutralize those substances so that they cannot
do any harm once emitted into the environment as part of the exhaust gas stream.