Desalination Processes for Drinking Water in Palestine: Optimization Using Decision Support System

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صنوبر, شتيلا عبد الباسط مصطفى
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An-Najah National University
 Palestine suffers from water shortage problem, there is a good potential for addressing the water shortage problem in rural and remote areas through sustainable saline water desalination technologies.  This study aims to investigate the Optimal Technique of Desalination Processes for Drinking Water in Palestine using the Multi-criteria decision analysis (MCDA), as a tool of Decision Support System, which is concerned with structuring and solving decision and planning problems involving multiple criteria. The purpose is to support decision-makers facing such problems. And ROSA software was used to evaluate some parameters like the energy required for desalination for both Nano filtration and Reverse Osmosis.  In MCDA the criteria and sub-criteria used in the assessment of optimal photovoltaic desalination technologies are summarized in terms of cost, efficiency and productivity. The study contains two types of water the Sea and Brackish water that varies in the TDS, and this variation cause a difference in the cost of desalination depending on the amount of energy required. The first case of the study shows that NF is the optimal technique for brackish water desalination in Zbaidat Village. That is, 1m3 of the permeate water from brackish water with a TDS 2586 mg/l requires 1kWh, which can be obtained by using PV cells system, with which Palestine is highly enriched.  The results of the second case study show that RO is the optimal technique for seawater desalination in Gaza Strip, since this technique needs the lowest amount of energy than the thermal technologies (MSF and MED), in which 1m3 of the permeate water that produced from seawater with a TDS of 35230 mg/l requires 5 kWh.