The wastewater treatment plant in interaction with the waste and energy industry: A German-Austrian Dialogue

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The research project "The wastewater treatment plant in the interaction with the waste and energy industry: A German-Austrian Dialogue" is led by the University of the Federal Armed Forces Munich in cooperation with the University of Innsbruck, Dr.-Ing. Steinle Ingenieurgesellschaft für Abwassertechnik mbH and BioTreaT GmbH and various sewage treatment plants as associated partners. In numerous digestion towers of sewage treatment plants in Bavaria and Austria free capacities are available, which can be used with the help of so-called co-fermentation. For this purpose, organic, readily degradable substances are added to the digestion in order to increase the production of biogas. The energy converted from this can make an important contribution to the energy transition and thus to climate protection. The rural area / alpine region has a special potential of co-substrates - from the dairy industry (flotate sludge from dairies) and tourism (leftovers) - which brings with it special challenges due to its composition and its strong seasonal seizure. In addition, there are optimization potentials for co-fermentation. The following aspects form the main points of the project: Development of Co Substrates in the South Bavarian and Austrian Regions; Digester gas production through the addition of co-substrates from dairies and gastronomy; Influence of the co-substrates on further degradation of sewage sludge; Efficient and flexible use of biogas: a contribution to the energy transition and to climate protection; Ecological, economic and technical evaluation; Development of a planning tool for the practice, which makes the findings of the project available to a broad circle; Establishment and establishment of a cross-border cluster, which continues the scientific research with the practical implementation, as planned in the project;

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