The groundwater of Fourchi which feeds the town of Ain M’lila in the Eastern region of Algeria
is derived from limestone. This water have a hardness of 87 ° F and give rise to compact and adherent
deposits of calcium carbonate in the drinking water distribution network. To inhibit the furring of this
water some chemical and electrochemical treatments (chronoamperometry) were applied in the presence
of (Ca(OH)2, Na2CO3 and KH2PO4) to eliminate the scale precipitation.
The use of Lime and sodium carbonate is encouraged due to their very low prices.
The scale inhibitor KH2PO4 has the property to adsorb on the nuclei of calcium carbonate and modify
their growth and morphology at a very low concentration (0.05mg / L).
The tests were performed on the Fourchi water in the presence of (Ca(OH)2, Na2CO3 and KH2PO4)
allowed us to make partial softening treatment and help solve the problem of scaling.