KERI CANTRELL / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY KERI CANTRELL / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY
Editorial use only.
EDITORIAL USE ONLY. Farm manure treatment system. Soil scientists (left and right) and industrialist (centre) discussing construction plans for the manure treatment system seen behind them. This system, designed at the US Agricultural Research Service, and built by the US company Super Soil Systems, is being used on a pig farm. It is a lower cost version of the normal system, and here is being used to treat the manure from up to 6000 pigs. The residue is used in crop fertilisers. One of the advantages of treating the manure this way is that it drastically reduces the amount of greenhouse gases (methane and nitrous oxide) produced. This technology is designed to replace bacterial lagoon treatments. Photographed in North Carolina, USA.
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