Principle of surface filtration
Channel: Bekaert
Date: 2022-01-20

The principle of depth filtration is captured particles at the surface layer of the fiber media - rather within the structure of the filter medium like with depth filtration. They agglomerates and form a dense cake layer on the of the filter media. The filtrate flow will be reversed to remove the cake.  Surface filtration can be applied in both liquid and gas filtration.
More about Bekaert metal fiber filtration 
https://www.bekaert.com/en/product-catalog/metal-fibers/filtration/filtration