Contribution to the Inhibitors Methods Study of the Scaling: Chemical, Electrochemical Processes in the Presence of Ca(OH)₂, Na₂CO₃ and KH₂PO₄

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• 作者：Kotbia Labiod ; Samira Ghizellaoui ; ^{gsamira@yahoo.com}
• 关键词：Scaling ; Calcium carbonate ; Inhibition ; Ca(OH)2 ; Na2CO3 ; KH2PO4
• 刊名：Energy Procedia
• 出版年：2012
• 期刊代码：P136_18766102
• 类别：pw
• 出版时间：2012
• 卷：18
• 期：Complete
• 页码：1541-1556
• 文件大小：855 K

摘要

The groundwater of Fourchi which feeds the town of Ain M鈥檒ila in the Eastern region of Algeria is derived from limestone. This water have a hardness of 87 隆 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.