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What Is The Cake Filtration Or Bridge Filtration Of The Filter Fabrics In Filter Press?


As we know, to choose the suitable filter fabrics, we have to combine the solution data together with filter fabrics.

If the density of the filter cloth is too high, which may cause the output less and affect the capacity of the filter press, that may lead to not getting the filter cake with a certain moisture content at a certain time, some even can not get the cake and always be slurry state.

If the density of the filter fabric is too low, it may cause a leaking problem of course.

When we chose the suitable filter fabric, why as usual the filtrate still dirty at the beginning when we replaced the new filter fabric? This phenomenon is happening especially for some fine particle solution treatments.

That is because at the first stage, the filter material only can collect the particles with a size bigger than their open size, so the smaller particles will pass by and the filtrate will be dirty, and need to return back to the feeding circulate.

But when more and more particles are collected, there will exist a cake layer between the newly fed solution and the filter fabric which can help with filtration, this phenomenon we called bridge filtration or cake filtration. After a short time, the filtrate will clean, always can get the proper filter cake as requested.

If any more information is needed for filter solutions, no matter filter fabrics or filter presses, just feel free to contact Zonel Filtech!

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