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Characterization of Scaling Power of Tiznit Region Waters

Journal of Water Resource and Protection 2017年第4期9卷 339-344页

作者： Said Ben-Aazza abdallah hadfi M’barek Belattar Naima Hafid Ali Driouiche Team “Materials and Physico-Chemistry of Water” Faculty of Science IBN ZOHR University Agadir Morocco

The phenomenon of scaling is particularly observed in the regions of Morocco which exploit groundwater. The region of Tiznit uses these waters, partly, for its domestic and industrial needs. The major problem of the use of this water is, besides its medium quality, the clogging of the pipes. The aim of this work is to study the phenomenon of water scaling in Tiznit region using the means of thermodynamic and kinetic analyses. The physicochemical analysis of this region’s waters shows that their contents of calcium and magnesium are very high. The hydrometric title is situated between 18°F and 64°F. The alkalinity varies from 22°F to 82°F. The classification of waters of this region for assessing the risk of clogging, according to their hardness, shows that 80% of these waters are hard waters. The kinetic characterization of scaling power of drinking water in this region was conducted using the method LCGE which also proved the scaling character of these waters.

关键词： Scaling Power Calcium Carbonate Clogging LCGE Tiznit

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Study of the Inhibitor Scaling Effect of the Agricultural Water by a Phosphate Fertilizer

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Journal of Water Resource and Protection 2015年第15期7卷 1234-1241页

作者： abdallah hadfi Said Ben-Aazza M’barek Belaatar Naima Hafid Ali Driouiche Department of Chemistry Team “Materials and Physical Chemistry of Water” Faculty of Science University Ibn Zohr Agadir Morocco

The localised irrigation or drop by drop system is a technique which makes it possible to save water, because it ensures a balanced and efficient distribution of water and an effective fertilization. However, this ferti-irrigation system is facing a number of problems hindering the agricultural development. The lack of uniformity of the localised irrigation was observed and found out that it is due to chemical clogging of drippers. Considering the complexity of the composition of the natural water used in micro-irrigation, we started our study by examining the effectiveness of the inhibitor on pure calco-carbonic water with 40°F, and then moved to explore the natural water of the agricultural region. The Legrand-Poirier-Leroy method allowed us to determine the position of the irrigation water compared to calco-carbonic balance. LCGE (abbreviation of “Laboratory of Chemistry and Environmental Engineering”) technique, based on the accelerated formation of calcium carbonate deposit under the effect of a degasification of studied water, enabled us to evaluate the scaling power of this water of irrigation either with or without inhibitor. The experimental results showed the following: in the case of pure calco-carbonic water with 40?F and of natural water, the addition respectively of 2 mg/L and 2.25 mg/L of phosphate fertilizer completely inhibits the precipitation of calcium carbonate under the conditions of the experiment.

关键词： Scaling Power Water Irrigation Calcium Carbonate Inhibitor Phosphate Fertilizer

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Contribution to the Study of Hot Water Scaling Phenomenon in the South of Touristic Area in Agadir City

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Journal of Water Resource and Protection 2016年第12期8卷 1035-1043页

作者： M’barek Belattar Said Ben-Aazza Rabeh Aba-Aaki abdallah hadfi Naima Hafid Larbi Boukbir Ali Driouiche Team “Materials and Physico-Chemistry of Water” Faculty of Science Ibn Zohr University Agadir Morocco National Office of Electricity and Drinking water Water branch Regional Laboratory of Agadir Agadir Morocco

This work aims to study the phenomenon of scaling observed in the hot water pipelines in the southern seaside touristic installations of Agadir city. This phenomenon has led to the formation of solid deposits and adherents to the internal walls of the facilities of the hot water. This deposit is at the origin of several technical, economic and environmental problems. It causes a decrease in the lifetime of boilers and a reduction of thermal exchanges and consequently a decrease in the energy efficiency of heating systems. In the present study, the samples of scale have been carried out at different points of hot water pipelines. The characterization of different scale samples recovered was conducted by X-ray fluorescence (XRF), elemental analysis (CHNS-O), infrared spectrometry (IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Analytical results showed that scale samples collected on different sites in touristic hot water system are mostly formed by calcium carbonate. Thermodynamic conditions in the site were favourable to the aragonite variety formation.

关键词： Hot Water Scaling Chemical Characterization Calcium Carbonate Aragonite Agadir City

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