Of all the people in the world that I would easily trust, it is the inventive and sensible people of Denmark. So, it is with some real interest that I view the recent anouncement that the Danish company of Dong Energy is to build the world’s first commercial full-scale plant to produce biogas from untreated Municipal Solid Waste (MSW) using its Renescience enzyme technology in Northwich, UK. The technology uses a giant washing machine to tumble solid municipal wastes, unsorted, in water with added enzymes. The cleaned remaining solids, including metal and plastics can be reclaimed and recycled. The organic matter can then be fed into an AD plant, operating thermophilically, to produce methane which can then be fed into a CHP unit to produce electricity and heat which is recycled into the process. The water in the process is extracted and recycled and the final solid, fibrous waste can then be recycled to land. This seems to me to be a sensible way forward and worth watching.
Bill Butterworth 16 March 2016
P,S. Generally, I plan to post a Sunday blog on The Circular Economy and environmental, waste or food piece on Tuesdays or Wednesdays. If you are a gardener, try looking at “How to make garden recycling work” by Bill Butterworth, published by MX Publishing and available from bookshops or Amazon. If you are a farmer, try another in the same series, “How to make on-farm composting work”.