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Study of Potential Corrosion and Scaling for Treated Water of Two Water Treatment Plants in Al-Hilla City | ||
| Journal of University of Babylon | ||
| Article 1, Volume 20, Issue 4, 2012, Pages 1180-1190 | ||
| Authors | ||
| ; a Hamed Emran Al-Husseini | ||
| Abstract | ||
| Corrosion causes metals delivering into the conveyed liquid. If the corrosion be very rapid, it will cause pipes cavitations. Then, the intrusion of contaminants into the pipes result in negative suction and if the water has been scaling tendency, a scale layer will introduce, then induce internal scaling and reduce convey potential in pipes. The aim of this research was determining the potential corrosion and scaling of treated water from two water treatment plants in Al-Hilla city. The variation in water stability with time and places of Al-Hilla city was indicated. Values of Langlier Saturation Index, Ryznar Stability Index, Puckorius Scaling Index ,and Aggressive Index, calculated during 8 months between 2007 to 2008. The calculated results showed that the values of Langlier Saturation Index ranged between -0.098 to 0.46, Ryznar Stability Index ranged between 6.91 to 7.81,Puckorius Scaling Index ranged between 6.76 to 7.47,and Aggressive Index ranged between 10.88 to 11.88 in Al-Jadeed WTP in the north. Where in the center Al-Kadeem WTP, Langlier Saturation Index ranged between 0.21 to 0.63, Ryznar Stability Index ranged between 6.63 to 7.30, Puckorius Scaling Index ranged between 6.87 to 7.33, and Aggressive Index ranged between 11.35 to 12.08 .By survey of stability indices, it founded that treated water from these two water treatment plants have moderate corrosion potential, and the corrosivity of water decreased in the water following down stream. The water quality parameters affecting LSI,RSI,PSI, and AI were discussed which were alkalinity, pH, total dissolved solids, temperature, hardness, and calcium concentration. | ||
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