sludge Archives – The Green Optimistic green tech news, since 2008 Mon, 13 Aug 2012 18:09:41 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 New Wastewater Treatment Plant From Siemens Saves Energy by Using Bacterial Heat https://www.greenoptimistic.com/new-wastewater-treatment-plant-from-siemens-saves-energy-by-using-bacterial-heat-20120813/ https://www.greenoptimistic.com/new-wastewater-treatment-plant-from-siemens-saves-energy-by-using-bacterial-heat-20120813/#respond Mon, 13 Aug 2012 18:09:41 +0000 https://www.greenoptimistic.com/?p=25802 Siemens has recently invented a new biodrying process that can convert sewage sludge into usable elements – all of this while saving a great deal of energy. Thus, their “mechanically enhanced biodrying” doesn’t require any external heat source, but produces its own with the help of the microbes in the sludge, which costs about 30 […]

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