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| While depth filtration has been
in vogue since the inception of bag filters through
the usage of needlefelt materials, surface filtration
as an alternate technique has been fast emerging
in the west owing to several inherent advantages
that it can provide. Below is a comparison. |
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Depth filtration occurs
as a result of the formation of a primary
dustcake on the surface of the filter bags
and an accumulation of dust particles within
the depth of the filter media. |
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Surface filtration
occurs with all particulate collected on the
surface of the filter media. This filtering
method eliminates the need for a primary dustcake. |
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