VOCLEAN BROCHURE
How does an activated carbon lter
remove odour?
There are millions of pores on the surface of an activated
carbon lter and each gram of activated carbon granule
has higher surface area than 1000 m
2
. Thanks to these
pores, many types of organic, hazardous gases and
uncomfortable odours are being removed through
adsorption. For efcient ltration both contact time
between air and activated carbon and carbon weight
are quite important.
To prevent grease and other solid particles from blocking
pores on the surface of the activated carbon lters and
to increase the lifetime of the system, the activated
carbon lters should always be placed after ne ltration
(electrostatic precipitator, bag and/or HEPA lter) grades.
Otherwise, the activated carbon lter may lose its
odour-removing capabilities in a shorter period of time.
Macropores Mesopores
Exterior surface
Micropores
Dirty air Clean air
Front lter Ionizer
Collector Back lter
In an Ecology Unit, the Electrostatic Precipitator (ESP)
is the most crucial part of the system, as they are the
components that trap most of the dust and grease
particulates.
As air passes into the combined ionizer/collector cell,
the particulates in the air stream are polarised to a
negative potential. As they continue through the ioniser
and between the collector cell plates, the polarised
particulates are repelled away from the negatively
charged plates and attracted to the earthed plates where
they stick. This allows the particulates to be ltered out
of the air ow.
The below diagram provides a brief visual overview of
how an electrostatic precipitator works.
How does the electrostatic
precipitator work?
systemair 5