Crossflow filtration
Crossflow filtration (also called tangential flow filtration) is a method for filtering liquids. It is used in particular in the food industry, bio-industry, biotechnology and environmental protection when filtering or diafiltering suspensions.
Crossflow vs. dead-end filtration
Dead-end filtration is the classic form of filtration. The suspension to be filtered is pumped against the membrane at low pressure.
The flow direction is perpendicular to the filter surface, so that the retained particles deposit on the filter surface and form a filter cake. This cake clogs the pores of the filter and filtration performance drops significantly in a very short time. The filters used must be replaced regularly.
Crossflow filtration
In contrast to conventional filtration processes, the filter surface is swept tangentially in crossflow filtration.
This generates turbulent flow on the membrane surface. The shear forces that occur when the membrane surface is swept prevent the separated material from forming a layer (cake) on the filter surface. The surface is cleaned during the process, so that flow rates remain constant.
TAMI is one of the world’s leading manufacturers of ceramic tubular membranes.
We develop and manufacture industrial ceramic filters (membrane filters) for filtration, separation and purification of molecules in liquid media.
Our industrial products are characterised by excellent performance in microfiltration, ultrafiltration and fine ultrafiltration, long service life and maximum environmental compatibility.
All TAMI products are also available on a laboratory scale. Our laboratory range for test work supports plant engineers and designers in selecting the right membrane for their application.
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