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The Living Machine

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					The Living Machine
     By: Meredith and Leah
Main Goal
   The main goal of the living machine is to be a
    sustainable alternative to conventional waste
    disposal.
   It also provides an
    educational
    opportunity from its
    simulation of
    ecosystems.


                            http://www.dewcorp.com
    FACTS
   Everyday two million tons of human waste is
    disposed of in water courses
   Less then 1% of the water supply is available for
    human consumption.
   In developing nations, 90% of sewage is dumped
    untreated into usable water supplies.
    1.2 billion people do not have access to safe
    drinking water
   More then 25,000 people die each day from water
    related illnesses.
Traditional systems
   Traditional systems:
       Use environmentally harmful chemicals
       Create toxic sludge
       Are energy intensive
       And often dispose
        improperly of toxic
        sludge
    “Making a Difference”
   Can provide cost effective onsite treatment
    systems to prevent waste from polluting rivers
    and other water sources.
   Can be installed in places where traditional
    treatment plants are not able to go
   Reduces the need to draw on precious water
    supplies for such things as irrigation and toilet
    flushing
   Economic potential in methane gas production
    and cultivation of plants able to grow in
    solutions provided by the machine
                What it does
   The living machine takes wastewater and
    purifies it to a point where it can be directly
    discharged into waterways or can be recycled
   It does so by
    utilizing a set of
    created ecologies
   Each system is
    designed
    specifically
    depending on the
    type of wastewater it will treat. http://www.livingmachines.com/
     How it works
1.   Anaerobic settling tank – this tank allows solids
     to fall out of the wastewater and sink to the
     bottom allowing it to become clearer.
2.   A Biofilter of bark and other soil-like materials –
     this is the first filtration and first step to help
     reduce the odor
3.   Photosynthetic algae tank
     –fix oxygen back into the
     water and provide organic
     food (dead algae)
     for respiration
     How it works cont’d
4.   Higher plants (typically water hyacinth) in
     aerobic tanks grow in a nutrient solution -provide
     a stable environment for microbes and remove
     heavy metals from the water.
5.   Microbes are an ideal source of food for plankton
     which are ideal sources for filter feeding fish
6.   This creates the ability for detritus-feeding fish to
     be added in later tanks so they may consume the
     larger sections of the treated sludge.
    Technological obstacles
   Most living machines require a greenhouse or
    other structure to protect it from colder weather.
   Minimal exposure to the environment so it has
    been unable to become a true ecosystem with
    natural selection and self-design and
    management.
Political/Economic obstinacies
   The psychological effect of being able to
    drink your own wastewater.
   Traditional wastewater treatments have been
    embedded into our economy.
   The living system could have difficulty
    breaking through the mass scale of traditional
    systems.
   Costly to construct
Negative environmental
impacts
   If pollution occurs it is due to improper or
    incomplete design of the Living Machine
References
   http://www.context.org/ICLIB/IC35/Guterson.
    htm
   http://www.rps.psu.edu/0009/machine.html
   http://www.rain-barrel.net/living-machine.html
   http://www.oceanarks.org/
   http://www.toddecological.com/ecomachines.
    html