Water walls: passive purification

By | September 11, 2012
The latest in the green trend is so-called concept water walls. It's basically a wall made up of water treatment layers – algae, grey waste water treatment, black waste treatment, etc. which should protect spacecraft from the dangers of space and clean up the spacecraft using passive renewal processes.

One big problem, though: if the water and treatment facilities are being bombarded with cosmic radiation, is the water really safe to drink? Or perhaps such a setup may find better application on Earth.

Reshared post from +Winchell Chung

Instead, NASA is exploring another possibility – the passive “Water Walls” system, which would use the principle of forward osmosis to perform tasks such as water filtration, air filtration, and even food growth.

NASA – Water Walls: Highly Reliable and Massively Redundant Life Support Architecture

3 thoughts on “Water walls: passive purification

  1. Bruce Foster

    Radiation does not stay in objects that are bombarded by it.  Radiation is simply a high energy particle (alpha and beta) or photon (gamma)  Once the alpha or beta particle has collided with an atom, its energy is dissipated, in the case of a gamma ray, it bumps an electron up to a higher energy level.  Irradiated objects do not become radioactive.

  2. barqzr davi

    mutant algae pretty quick i'd think!
     the forward osmosis concept in zero or near, G is intriguing . Wonder what the membrane life expectancy is and if flush/backflush would increase it

  3. Ivan Hennessy

    Off the top of my head, it seems like cosmic radiation should be helping the process of breaking down potentially harmful compounds. I'd expect the outer layers to carry the water most in need of chemical breakdown, with the innermost layers making up the food production end. Between them you could have a shield of water free of organic compounds, or other compounds which might ionize or otherwise react to various forms of radiation.

    That is awesome.


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