Use Of The HEDP For The Inhibition Of The Tartar Of Ground Waters
- 作者：Y Boulahlib-Bendaoud ; Samira Ghizellaoui ; gsamira@yahoo.com
- 关键词：Drinking water ; Hardness ; Calcium carbonate ; Inhibition ; HEDP
- 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：1501-1510
- 文件大小：1034 K
摘要
The earthy waters of Hamma and Negrine are characterized by the presence of a very large quantity of calcium carbonate on surfaces of the domestic facilities and industrial during their circulation. This deposit has very serious technical consequences. The study of water of the two sources Hamma and Negrine showed that this water is furring and their hardness is about 59 掳F for the water of Hamma and 56 掳F for the water of Negrine. In this study we used the chronoamperometric method [1] for: to determine the furring capacity of raw water of each source (Hamma and Negrine) which is characterized by the time of scaling and the residual current. to evaluate the influence of the temperature on the furring capacity of the water of Hamma and the water of Negrine. to study the effect of the chemical inhibitor (HEDP) on the furring capacity of water of Hamma and Negrine. The application of the chronoamperometric method to the temperature of 30 掳C on raw water of Hamma gave a time of scaling of 9.7 min for the water of Hamma and 13.5 min for the water of Negrine. These values increase with: -the reduction in the temperature of raw waters of Hamma and Negrine. the addition of the inhibitor: HEDP with weak concentrations. The water treatment of Hamma and Negrine by the HEDP delays the formation of the tartar starting from the addition of the concentration of 0,005 mg/L of addition of the HEDP on the water of Hamma and 10 渭g/L of addition of the HEDP on the water of Negrine. According to the results obtained the HEDP has an inhibiting effect on water of Hamma and Negrine with weak concentrations.