The main material on sand filters are quartz, anthracite and similar materials. For every kind of water, the dirtiness parameter is blurryness and this means the water has solid material, silica or residue in it. We use physical residue filters to treat a designated amount of these. But, the big part of waste materials in water can’t be treated by direct filtration. These wastes generally gets oxicited or flocculed by some chemicals and then gets filtered.
Residue filters, like all the other treatment systems, are automatic. This automation can be done by different ways and equipments.
In our country, the generally used automation systems are: Fleck, Sieta, Autotrol etc. The mineral tanks used for these sytems are based on: carbon steel, stainless stell, polyglass, FRP, composite etc.