ROBERT BROOK / SCIENCE PHOTO LIBRARY ROBERT BROOK / SCIENCE PHOTO LIBRARY
Chemical waste treatment using reed beds. Reed bed treatment systems are self-contained, artificially created wetland ecosystems. The mixture of aerobic and anaerobic soil conditions allow bacteria and fungi to flourish. These microbes can degrade, and render harmless, a wide range of organic chemicals and pollutants such as heavy metals. Photographed at a chemical works in Billingham, Cleveland, UK.
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