Title: Ranking suitable sites for Soil Aquifer Treatment in Jerba Island (Tunisia) using remote sensing, GIS and AHP-multicriteria decision analysis

Authors: Makram Anane, Hamadi Kallali, Salah Jellali, Mohamed Ouessar

Addresses: Laboratory of Wastewater Treatment and Recycling, Water Research and Technologies Centre, Route touristique de Soliman, P.O. Box 273, 8020 Soliman, Tunisia. ' Laboratory of Wastewater Treatment and Recycling, Water Research and Technologies Centre, Route touristique de Soliman, P.O. Box 273, 8020 Soliman, Tunisia. ' Laboratory of Wastewater Treatment and Recycling, Water Research and Technologies Centre, Route touristique de Soliman, P.O. Box 273, 8020 Soliman, Tunisia. ' Arid Regions Institute, 4119-Medenine, Tunisia

Abstract: The present study aims to locate and rank suitable sites for Soil Aquifer Treatment (SAT) in Jerba Island (South Tunisia) by integrating a single-objective AHP method into a GIS model. The methodology represents a first step in SAT basin construction projects before field investigations. It considers several criteria related to technical, environmental and cost aspects. The result showed that a large area, covering 1489 ha, is suitable for SAT, which exceeds the required area to infiltrate the total treated wastewater produced by all the island wastewater plants. Being situated inside agricultural areas and near coastlines, potential sites for SAT could increase groundwater availability for irrigation and also mitigate existing marine intrusion problem facing Jerba aquifer. The best sites are found closer to Aghir plant than the rest of island WWTPs.

Keywords: AHP; analytical hierarchy process; multicriteria evaluation; GIS; geographic information systems; SAT; wastewater treatement; Jerba Island; Tunisia; soil aquifer treatment; groundwater availability; irrigation; remote sensing; multicriteria decision making; MCDM; site selection.

DOI: 10.1504/IJW.2008.018151

International Journal of Water, 2008 Vol.4 No.1/2, pp.121 - 135

Available online: 04 May 2008 *

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