Something Is Very Right In Denmark

摘要

THE pastoral, green rolling hills of Denmark's dairy, pig and livestock farms belie the development of a sophisticated industry imbedded in the region that converts waste residue to energy. On a cold, blue sky September day, we stood on the apron of the receiving facility in Ringe, Denmark and watched as a parade of trucks arrived, each containing 9,000 gallons of animal manure. The trucks connect to massive pumps and point source odor control equipment to offload the manure into holding tanks, thenare cleaned and washed of seeds and residue, and reloaded with liquid digestate, an organic fertilizer, for delivery back to the farms where the manure originated. The entire offload and reload process takes 12 minutes per truck.