| |
The
water coming both from water systems and from natural sources (such as
river, lakes, springs, wells...) plays a first-rank role from a biological
point of view and also as regards its innumerable civil and industries
uses. The set composed of calcium bicarbonate, magnesium and the various
mineral salts dissolved in it represents the degree of water hardness
that determines the tendency to calcareous scale. As temperature increases,
calcium bicarbonate Ca(HCO3)2 liberates carbon dioxide (CO2) and changes
into solid calcium carbonate (CaCO3), responsible for hard calcium scaling.
|
|
In
nature, its structure has two differents crystalline forms: Calcite
e Aragonite.
| Calcite: |
Calcium carbonate crystal
having a rhombohedral shape and high capacity of aggregation
and compactness.
|
| Aragonite: |
Needle-shaped calcium carbonate
crystal having low capacity of aggregation and compactness.
|
The
crystalline form responsible for calcareous scale is calcite.
The crystallization of calcareous scale in the water ecologically
treated with TECNOACQUE is exclusively aragonitic to the extent of
100%, in comparison with calcite.
|
|
| |
Analysis
of calcareous scale after boiling, carried out at the University of Padua.
|
PHOTOGRAPH
N.
|
SAMPLE
|
%
CALCITE
|
%
ARAGONITE
|
|
1
|
WATER
AS IT IS
|
40
|
60
|
|
2
|
WATER
TREATED WITH TECNOACQUE
|
Absent
|
100
|
|
|
Visual check
of the external state of the copper heat exchangers after the test carried
out by the University of Padua (photograph n.3). On the left: Coil with
non-treated water. On the right: Coil with water treated with TECNOACQUE.
Analysis of the calcareous scale formed on the external surface of the
copper heat exchanger, carried out at the University of Padua.
|
SAMPLE
|
%
CALCITE
|
%
ARAGONITE
|
|
WATER
AS IT IS
|
30
|
70
|
|
WATER
TREATED WITH TECNOACQUE
|
Absent
|
100
|
|
|