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Why is a membrane superior to dust cake formation as a filter aid?

April 26, 2017aid Cake dust filter FORMATION membrane superior

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Why is a membrane superior to dust cake formation as a filter aid?

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Building a dust cake on the surface of a filter bag in order to increase the fine particle collection efficiency of the fabric allows the ingress of some particulate into the filter media which increasingly reduces the fabric permeability, allows for particle migration and emission through the media and decreases the effectiveness of the cleaning mechanism.