Prozesskontrolle und Anlagenfuehrung landwirtschaftlicher Biogasanlagen durch dynamische Betriebsweise Schlussbericht

When biogas production, methane-content and Redox are measured directly at the fermenter as well as time and amount of substrate input and if all these data are documented online, trends can be visualized. In a dynamic management system the fermentation process is being confronted with variations of substrate load. The dynamic responses of the biological process can be recognized immediately and compared with the expected results. The evaluation permits a statement about the condition of the process. In the project the tasks, questions and the interpretation of the answers which can be placed were compiled and examined in the laboratory and three biogas plants working. With this proceeding the substrate characteristic, the performance level of the process and the reserves in biogas production can be determined. Each substrate or substrate mixture has its own, system dependent fermenting curve. Load tests must take place locally, external fermenting tests are only conditionally usable. A threatening overloading can be recognized by relatively short feeding stops without bigger disturbance of the process. The following advantages will be reached: - timenear diagnosis of the biological process locally, - purposeful optimization of the process, - avoidance of process disturbances, - efficiency increase by maximization of gas production, - possibilities for a remote support. (orig.)SIGLEAvailable from TIB Hannover: F05B268 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Verbraucherschutz, Ernaehrung und Landwirtschaft (BMVEL), Bonn (Germany)DEGerman