"Living Machines" for wastewater treatment

"Living Machine is a trademark and brand name for a patented form of ecological wastewater treatment designed to mimic the cleansing functions of wetlands. Similar to Solar Aquatics Systems,[2] the latest generation of the technology is based on fixed-film ecology and the ecological processes of a natural tidal wetland, one of nature’s most productive ecosystems. The diversity of the ecosystem produced with this approach allows operational advantages over earlier generations of Living Machines and over conventional wastewater treatment technologies." source: wikipedia