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Production of water for drinking purposes is undoubtedly one of the main purposes of the water treatment technology.
Termokimik's Water Treatment Division is in a position to offer, in this specific sector, a wide range of equipment and processes including clarification and filtration, ultrafiltration, sterilisation (through chlorine, chlorine dioxide, ozone and ultraviolet ray-based techniques), reverse osmosis for the production of potable water starting directly from seawater or for the removal of specific pollutants typically present in well water.
Particular attention has been dedicated to the remineralisation process, intended to re-establish the optimal level of salinity in a reverse osmosis permeate or in an evaporator distillate.
In addition to the traditional methods based upon chemicals metering, Termokimik can offer the "limestone filter" technology, i.e. filters filled with limestone (calcium carbonate) gravel or dolomite (calcium and magnesium carbonate) gravel.
The water to be remineralised (saturated with carbon dioxide) is made to flow through the filters; the reaction between carbon dioxide and calcium carbonate (which takes place naturally when water seeps through the layers of calcareous rock) will cause the calcium or calcium+magnesium bicarbonate to become soluble.
The remineralisation process is completed by injecting previously filtered seawater, which contributes the required quantity of sodium chloride.
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