MIT2_500s09_lec25

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MIT OpenCourseWare http://ocw.mit.edu 2.500 Desalination and Water Purification Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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2.500 Desalination & Water Purification Spring 2009 Summary Ghana Haiti Photos by Amy Smith. Used with permission.
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Context
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Safe water supply … is not universal More than 1 billion people lack access to clean drinking water Half the hospital beds in the world are occupied by patients with easily prevented water-borne disease Half the people in the world do not have sanitation systems as good as those in Ancient Rome. In 2000, unsafe water mortality amounted to 80 million years of lost life ( Science , 25 Jan 2008) This situation is expected to get WORSE. Tanzania Image from Wikimedia Commons
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4 Images removed due to copyright restrictions. Please see http://www.flickr.com/photos/andrewheavens/100063338/ http://jimbicentral.typepad.com/photos/uncategorized/2007/09/18/water_scarcity.jpg
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5 UNEP/GRID-Arendal. " Areas of Physical and Economic Water Scarcity ." UNEP/GRID-Arendal Map and Graphics Library. UNEP/GRID-Arendal, 2008. Accessed September 25, 2009.
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Yangon, Myanmar May 2008 …after cyclone Images removed due to copyright restrictions. Please see http://www.nytimes.com/slideshow/2008/05/05/world/0505-MYANMAR_index.html http://graphics8.nytimes.com/images/2008/05/05/nytfrontpage/23097528.JPG
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7 Source: Wikipedia Image from Tobler, W., et al. "The Global Demography Project." TR-95-6. Santa Barbara, CA: National Center for Geographic Information Analysis, 1995. Image is in the public domain.
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Per capita water consumption (m 3 /y) Worldwide average 800 Nigeria 50 China 300 Mexico 800 Italy 1000 USA 2000 World desalting capacity 2 Source: Science , v. 319, 25 Jan 2008
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9 Cleaning a sidewalk in Long Beach, CA laist.com Image removed due to copyright restrictions. Please see http://www.flickr.com/photos/peggyarcher/975676140/in/set-72157601398334771/
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