Granular filtration

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Filtration system against the undesirable presence of dissolved metals in the water

Heavy metals: Lead, arsenic…

E.T.E. provides for the elimination by absorption over specially selected granular material (crushed and activated feldspath – in association with CNRS IMP/ETE).

Metals are trapped by molecular sifting through a gravel pack sized according to the nature and concentrations found in the water.

Iron, manganese

E.T.E. recommends its removal by oxidation- filtration using specific granular material (zeolite, sand, pozzolan,…).

The iron and manganese dissolved in the water are oxidised in particle form then trapped in the granules designed for this purpose.