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Write a report assessing the feasibility of different techniques for providing fresh water to arid regions of the world

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In water-scarce semi-arid and coastal- arid areas that are inland located where the only available source of water is either (brackish) ground water or saline. Tis technology of water harvesting has been used since the twentieth century as (Awerbuch, 2004; ad Schiffler 2004) report about the global use of desalination capacity and its challenges. Aout fifty percent of worldwide desalination occurs in the Middle East, fllowed by North America and Europe. Te future usage of desalination is emerging at a high rate with an increasing demand and up- I promotes tourism and also acts as a recreation for the development of economy in the coastal regions (Pyne et al, 2004) as reported in the world water development report.

I was recently summarized (Asano and Levine, 2004) that there are many challenges associated with water recovery and reuse. Tey stated that the technique used in water reuse has been employed in many countries such as the United States and Germany. Mdern waste water treatment has facilitated its increased usage in up to date waste water treatment procedure. Tese can effectively remove environmental material, pthogens and nutrients leaving the treated water with a wide range of prospective applications.

Acording to the water recycle survey (Mantovani et al, 2001) the best water reprocessing projects in conditions of cost-effective and communal approval are those that exchange with domestic water in lieu of clean water for use in cleaning, tilet flushing, evironmental restoration, idustrial use and for irrigation. Wter is stored in reservoirs that are constructed to cope with the growing demand for water in order to provide irrigation, fshing recreation, power, ptable supplies and as well as lowering the impacts and risks that accompany us in times of natural calamities for instance floods and droughts.

Adam is an example of a modern water reservoir. I collects water runoffs and stores it as a constant, rliable and available resource. Te creation of a dam as a water reservoir enables higher availability of water at any time incase an emergency occurs. Tis method of transferring water from one basin has bin used in the arid and semi-arid regions for long period time to meet water demands.

I occur when existing water resources have been outstripped by agricultural, dmestic and population increase (Shao et al, 2003) according to a presentation in china. Ad those. ..

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