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Cairo University (2012)

Economics of using Desalinated Seawater and Brackish Water in Supplementary Irrigation

Somaya Ibrahim Sobhy Khedr

Titre : Economics of using Desalinated Seawater and Brackish Water in Supplementary Irrigation

قتصاديات استخدام تحلية مياه البحار والمياه الضاربة للملوحة في الري التكميلي

Auteur : Somaya Ibrahim Sobhy Khedr

Université de soutenance : Cairo University

Grade : Master of Science (MS) 2012

Résumé
At present, about 40% of the world’s population is suffering from serious water shortages. This is because of the rapid increase of population, and pollution that limit the use of fresh water resources. In addition, according to IPCC the rainfall and water resources will decrease significantly because of climate change. Concerns about the sustainability of freshwater supplies are fostering the interest in desalination as a one possible solution to the increased water demand especially in agriculture sector. This study investigates the economics of using the desalinated salt water and brackish water especially in supplementary irrigation. To find an optimum solution linking the economic cost of the desalination plant technology with the economic return of water used in supplementary irrigation by finding breakeven curves for each crop and analysis for change variables. Desalination presents the main opportunity to meet the increased demand and reduce the food gap by providing freshwater not only from the sea, but also from brackish groundwater. This research offers solution to cover loss in cost due to reduction of water, using supplement irrigation.

Mots clés : Desalination, RO, ED, MED, Supplementary irrigation, CROPWAT

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