The particular conformation of the “Tellerette” forces the pollutants to break down sudden changes of direction, but at the same time allow for easy crossing of the air.

The particular toroidal geometric shape, constituted by ten small rings arranged in a radial direction, provides a better surface exchange than other random fill media. This structure creates a large emptiness fraction, meaning that large quantities of occupied volume or a large cross flow with low pressure drops and therefore low pressure drops.

The optimization of the gas flow that flows into the filter allows to reduce the operating costs in the design phase. And also, the particular shape given by the rings of a few millimeters allows a reduction in maintenance costs thanks to the minimum leachate encrustation on the surface.