There’s been a growing interest in the potential of sewage as a supply of renewable energy for urban areas, a source we’re only beginning to tap. (See, for example, this recent piece from Water Innovations http://bit.ly/1wV2UV1). Wastewater treatment plants, or resource recovery facilities as they prefer to be called these days, are increasingly seeking ways to get more and more high strength waste (i.e. biological waste) into their facilities so that they… Read More