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Desalination / Evaporation

1,608 bytes added, 19:44, 12 April 2012
Created page with "Desalination by distillation produces water without chemical salts and the method can be used at household level. The method can be expensive because of the capital investment ne..."
Desalination by distillation produces water without chemical salts and the method can be used at household level. The method can be expensive because of the capital investment needed and because fuel/charcoal is used to heat the water. The volume of water produced is also low.

However, the use of desalination to provide drinking-water is increasing and is likely to continue to increase because of water scarcity driven by pressures arising from population growth, over-exploitation of water resources, and pollution of other water sources. While most (around 60%) of currently constructed capacity is in the eastern Mediterranean region, desalination facilities exist all over the world, and their use is likely to increase in all continents.

Most present applications of desalination are for estuarine water, coastal water and seawater. Desalination may also be applied to brackish inland waters (both surface water and groundwater) and may be used on board vessels. Small-scale desalination units also exist for household and community use and present specific challenges to effective operation and maintenance.

==Suitable Conditions==

==Construction, operations and maintenance==

==Costs==

==Field experiences==

==Reference manuals, videos, and links==
* [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CDgQFjAB&url=http%3A%2F%2Fwhqlibdoc.who.int%2Fhq%2F2011%2FWHO_HSE_WSH_11.03_eng.pdf&ei=-C-HT46BBomdiALY4vX8AQ&usg=AFQjCNEkepQ3bXkZG-OrwYmwRFuqS23pHg&sig2=Jg2T4HmfNtRSQxQ1-upfWg Safe Drinking-water from Desalination]. World Health Organization, 2011.

==Acknowledgements==
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