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The Disadvantages of Seawater Desalination at the Bousfer Station Located on the Oran Coast in Western Algeria

100%

Kassouar S. , Abi-Ayad S. M. E.-A.

tom Vol. 25, nr 6

221--230

Securing sustainable access to water resources is a critical concern for all nations bordering the Mediterranean Sea, and Algeria is no exception. Leveraging its extensive 1,200–kilometer coastline, Algeria has embraced desalination as a key strategy, treating both seawater and brackish water sources. This approach provides potable water to inland towns and cities, extending as far as 60 kilometers from the coast. Currently, Algeria boasts an impressive network of 21 desalination plants, with a combined daily production capacity of 2.6 million cubic meters. The majority of these facilities utilize reverse osmosis, a widely employed desalination technology. This study focused on the Bousfer mini-desalination plant situated on Algeria’s western coast. Various water samples were analyzed throughout the desalination process: seawater intake, post-desalination (osmosis) water, remineralized drinking water, and the resulting brine wastewater. A physicochemical and bacteriological analysis was conducted to assess water quality at each stage. Statistical comparisons were performed using paired-sample T-tests for seawater and osmosis water, and one-sample T-tests were used to compare drinking water and wastewater against established international standards. The analysis revealed significant reductions (p-value<0.001) in most physicochemical parameters for the reverse osmosis water, including conductivity, total dissolved solids (TDS), alkalinity, total hardness, chlorides, calcium, and magnesium. Conversely, these parameters were significantly elevated in the brine wastewater. The bacteriological analysis confirmed the absence of harmful bacteria like E. coli, enterococci, and sulphite-reducing clostridia in the final drinking water. However, this study also highlighted a negative environmental externality, the presence of debris and foam layers on the water surface near the desalination plant outlet, attributed to chemical discharges, which poses a potential nuisance for tourists visiting nearby Bousfer beaches.

Problem zaoptarzenia w wodę w regionie Islamu

84%

Wilczyński W. J.

Przegląd Geopolityczny

2019

tom 29

87-101

Region Islamu jest obejmuje większość istniejących na Ziemi obszarów suchych i półsuchych. Z tego względu woda stanowi tam surowiec deficytowy, posiadający znaczenie strategiczne. Niejednokrotnie w przeszłości i obecnie działania mające na celu zabezpieczenie odpowiednich ilości wody do celów gospodarczych i komunalnych prowadziło do konfliktów lokalnych jak i międzypaństwowych. W artykule wyjaśniono sposoby pozyskiwania wody stosowane na tym obszarze w przeszłości jak i współcześnie, zwłaszcza w krajach doświadczających eksplozji demograficznej i dużej dynamiki gospodarczej. Szczególny nacisk położono na geopolityczne znaczenie zasobów wody oraz możliwość zastosowania nowoczesnych technologii w jej pozyskiwaniu, co w uprzywilejowanej sytuacji stawia państwa dysponujące środkami finansowymi.

The Islamic region includes most of the arid and semi-arid areas existing on Earth. For this reason, water is a deficit resource there, with strategic importance. Often, in the past and now, activities aimed at securing the right amount of water for economic and communal purposes led to local and interstate conflicts. The article explains the methods of obtaining water used in this area in the past as well as today, especially in countries experiencing demographic explosion and high economic dynamics. Particular emphasis was placed on the uneven distribution of desalination installations and the geopolitical importance of water resources as well as the possibility of using modern technologies in its acquisition, which in a privileged position puts countries with financial resources at their disposal.