Mineralizing

The water treatment has not yet found a common solution valid for every situation of the daily practice. However, today we are able to offer a versatile product that can find different applications in many situations.

The Cullmite is our exclusive product of calcium carbonate and magnesium carbonate semi calcinated particularly suitable for acid waters or poorly mineralized ones, which has allowed us to work in various purifying processes.

The Cullmite’s treatment permits a natural and spontaneous reaction of solubility, in proportion with the acidity in the water (CO2) obtaining a neutral salt (bicarbonate) that gives water a pH around 7, so we protect the hydraulic systems from rust and limescale. The deacidification is based on the capacity of the neutralization of the acid substances melted in the water by the granules of Cullmite that are on the free part of the filtering surface. The efficacy of the deacidification is linked to its chemical composition (mainly CaCO3 and MgCO3) with the free surface and with the porosity that assumes a relevant value, being at the maximal level. The filtering surface can be regenerated with the backwashing. This operation is made easier thanks to the negligible value of the adhesion of the polluting matters on the Cullmite’s granules.

The CO2 dissolved in the water, cause of corrosion, can be combinate with CaCO3, CaO, MgCO3 and MgO contained in the Cullmite in according to the following reactions:

CaCO3 + CO2 + H2O = Ca(HCO3)2
CaO + 2CO2 + H2O = Ca(HCO3)2

MgCO3 + CO2 + H2O = Mg(HCO3)2
MgO + 2CO2 + H2O = Mg(HCO3)2

thus increases the hardness and the alkalinity of the treated water.

The pH instead can increase till a maximal value of 9. In order to obtain a particular value of pH we have to consider some aspects as the quantity of Cullmite that we use, the time of contact, the origin pH, so the water treated must have a speed depending on these aspects.

The Cullwater mineralizing automatic and semi-automatic filters are vertical modules and work in pressure up to a maximum of 7 bar; they can be controlled by a group of manual or hydroelectric valves for the regulation of the phases of service, backwash and co-current washing.