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Sand filtration

Sand filtration

Sand filtration is a process in which the treatment of the water is realised by the 'porous' nature of a sand layer which traps particles present in water. Various other physical/ biological processes also take place in a sand filter which further strip the water of different substances (deferrisation, demanganisation, ammonium removal).
 
Sand filtration is frequently used in the treatment of groundwater to remove dissolved iron. Iron and manganese in the groundwater are oxidised by aeration and the flocs formed are subsequently trapped in the sand filter. After a certain period of time, the filter is saturated with particles and must be cleaned to prevent it from blocking up completely. Sand filters are cleaned by backwashing with air and/or water.
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Logisticon manufactures standard or client-specific coated steel filter tanks varying from 1.2 to 3.1 metre in diameter for its rental fleet and for specific projects.
   
Logisticon manufactures both sand and activated carbon filters, in steel, under its own management. The models available vary in bed height and diameter of the filter material (nozzles), etc. Basically, a filter consists of a steel body with two low pressure floors, and a bottom plate which is welded onto the body and in which the wash heads are mounted.

Besides the many sand and activated carbon filters manufactured for specific purposes (environmental technology, process and waste water) in our rental fleet, we also make customised filter tanks.
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In addition to the various dimensions specified by the client, such as the diameters of the tank and connecting pipes, various options are possible in terms of integrated feed and washwater drainage pipes, an extra manhole, aeration/distribution system, type of coating (KIWA quality mark), etc.