February 1991
From The Space Library
“Troubled Hubble Still Dazzles Astronomers” article appears in National Geographic Magazine
NASA has developed a biological system for treating wastes, using aquatic plants to recycle human waste on space stations. This system is being adapted in the Appalachian highlands of Virginia. Monterey began running its waste through ditches filled with rocks and planted with indigenous bulrushes. The state health department recently pronounced this "microbiological filter" a success and it is considerably cheaper than traditional waste treatment systems. However, artificial marshes need 20 times as much land as mechanical systems, limiting their potential in urban areas. (Virginia Business, Feb 91)
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