Autothermal Thermophilic Aerobic Digestion in the Federal Republic of Germany

摘要

The status of Autothermal Thermophilic Aerobic Digestion (ATAD) of Wastewater Sludges in the Federal Republic of Germany (FRG) was evaluated via site visits to operating facilities. In the FRG, three variations of ATAD systems have been constructed on a full scale. These include systems marketed by Fuchs Gas and Wassertechnik GmbH and Co., Theime Umwel Hecknik GmbH, and Babcock (Deusche Babcock Anlagen Aktingesulschaft). Fuchs is the leading supplier of these systems with approximately 13 of the 17 facilities in FRG and Switzerland. The ATAD process in the FRG is required to meet a limitation of 100 enterobacter/ml in the final sludge product. ATAD maintains a status of approval by the Federal Government (FRG) as a process that is capable of producing a pasturized (hygenic) sludge. The process appears to be simple to operate and cost effective compared to existing digestion technologies.