Abstract:
The project is aimed at the development, construction and operational verification of the processing line for material transformation of sewage sludge stabilized by anaerobic fermentation with simultaneous utilization of energy from the organic fraction of the sludge. Main units of the processing line will be: an allotermal pyrolyzer with a large contact area, a separator of biochar, a purification line, a partial oxidation zone and a heat exchanger (gas/pyrolyzer). The produced biochar will be well usable as a highly porous fertilizer and, at the same time, as a high-quality component for soil improvement and fertilizing. Typically, the biochar contains 4–8 mass % of phosphorus, 1–5 mass % of nitrogen, and 20–25 mass % of carbon.