Cheap Drinking Water From Seawater

Posted on April 1, 2006  Comments (4)

Image of process to get cheap drinking water from seawater

New membrane technology offers cheap drinking water from seawater

The consumption of drinking water is still increasing, while the availability of drinking water decreases. About 1 billion people in the world have no access to enough clean drinking water, while 70% of the Earth is covered with water.

Other techniques to convert seawater into drinking water, like RO, MSF, or MED, use a lot of energy to vaporize the water or push the water through a membrane under high pressure. Memstill uses cheap waste-energy, which cuts down the energy consumption and CO2 emissions. The cost of desalination of one cubic meter water with Memstill could be under $0.50, where other distillation techniques cost about 1 dollar for the same amount of water.

State-of-the-art desalination technology – more information on the memstill web site.

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4 Responses to “Cheap Drinking Water From Seawater”

  1. Water From Air
    January 16th, 2007 @ 7:07 pm

    [...] Pretty cool. Getting clean water is a large problem throughout the world. Unfortunately this is not the solution yet – each machine costs $500,000. [...]

  2. CuriousCat: Plastic Balls for the Resevoir
    June 10th, 2008 @ 7:02 pm

    “The water needs to be shaded because when sunlight mixes with the bromide and chlorine in Ivanhoe’s water, the carcinogen bromate forms…”

  3. John Water
    May 21st, 2009 @ 9:29 am

    The energy to produce this is the issue. Some say it costs 4 gallons of water to produce a clean one and with still a shocking figure 1 billion people in the world ot having access to clean water it is definitely a conundrum which needs more attention.

  4. Curious Cat Science and Engineering Blog » Agricultural Irrigation with Salt Water
    June 7th, 2009 @ 2:56 pm

    [...] Cheap Drinking Water From Seawater (2006) – Water From Air – Nearly Waterless Washing Machine – Water and Electricity for All by [...]

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