Abstract
Hard water does not pose a threat to human health but may cause precipitation of soap or results stone in the boilers. These reactions are caused by the high concentrations of Ca and Mg. In the industry they are undesirable because of higher fuel consumption for industrial use .Electromagnetic polarization water treatment is a method which can be used for increasing the precipitation of Ca 2+ and CO3 2- ions in hard water to form CaCO3 which leads to decrease the water hardness is research has been conducted by changing the number of coil turns and voltage of the system. The spectroscopy electron microscope was used for imaging the produced crystals. Results of the investigation indicated that the electromagnetic polarization can be used in precipitation to decrease the hardness of water due to increase in the precipitation percent of CaCO3.
Highlights
Water hardness is a measure of the capacity of water to its reaction with soap
Natural waters are characterized by a high content of magnesium, whose concentration can be up to 200 mg / dm3, which makes them unfavorable for use in the public water supply, since the maximum concentration of magnesium in drinking water according to current regulations is limited to 50 mg / dm3 [1]
D - The greater the number of turns are used, the larger electromagnetic fields induced received by the water hardness in the coil
Summary
Water hardness is a measure of the capacity of water to its reaction with soap. Hard water causes more soap foaming. French degree of hardness = 10 mg CaCO3 in liter of water 3. The concentrations of Mg ions are high in the area dominated by dolomite rocks This is the case of ground water in the vicinity of Tikrit university. In this area, natural waters are characterized by a high content of magnesium, whose concentration can be up to 200 mg / dm, which makes them unfavorable for use in the public water supply, since the maximum concentration of magnesium in drinking water according to current regulations is limited to 50 mg / dm3 [1]. The processes to treat and recover raw water is the use of electromagnetic field. Electromagnet field can weaken the ion and water molecules and increase the collision between the Ca2+ and CO32- ions, accelerating the rate of nucleation and precipitation of CaCO3[5]
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