Water distributed from the Hamma resource is supersaturated on carbonate of calcium, a not very soluble salt and a major component of tartar. During their circulation in the network, these waters give rise to scaling phenomenon which involves a significant economic problem because of the low thermal conductivity of the solid layer which reduces the output of the exchangers of heat. Moreover, the increase of the thickness of tartar reduces the water flow and causes the seizing of the valves and taps. The maintenance of the furred installations or the replacement of the drains is very expensive. For this reason, several chemical and electrochemical processes were applied for the evaluation and the inhibition of the furring capacity of the earthy waters of Hamma which feed the town of Constantine with drinking water. Electrocrystallization was executed on a steel electrode to study germination and growth of the calcium carbonate crystals. The method of accelerated scaling was also considered in the presence of lime, sodium carbonate and soda. The results indicated that water of Hamma is furring. The use of the method of accelerated scaling and the follow-up of electrocrystallization gave satisfactory results.
