On Thursday, April 12, 2018, the Eifel-Rur Water Association and the mayor of Aachen, Mrs. Margarethe Schmeer, commissioned Europe's largest ozonation plant at the Aachen-Soers wastewater treatment plant. The treatment plant has been equipped with an additional treatment stage to remove trace substances from wastewater and implemented in the existing wastewater treatment. The wastewater treatment plant has been cleaning the sewage of the city of Aachen since 1913 and is dimensioned for 458,300 population equivalents. The large-scale ozonation plant belongs to the NRW state-funded project "DemO3AC" (Demonstration project for ozonation of wastewater to the Aachen-Soers treatment plant) and should contribute to a considerable reduction of anthropogenic trace substances and a significantly improved water quality of the Wurm river. An accompanying research in situ investigates how the ozonation of the wastewater treatment plant effluent affects the water in particular. A joint venture with DAHLEM as the lead company is responsible for the object and technical planning. The state of North Rhine-Westphalia supports both the large-scale realization and the accompanying research. In October 2017, after only eight months’ construction time, the topping-out ceremony was celebrated.
Many municipalities have experienced how massive the damage caused by heavy rain can be in recent years. Targeted flood prevention against are heavy rainfall and flash floods is becoming increasingly important in this context. It represents a major challenge for the municipalities and is closely linked to the municipal adaptation to climate change. The establishment and implementation of coordinated rain risk management is on the one hand a new task. On the other hand, a flood preparedness system coordinated by the various specialist departments increases the complexity of planning and administrative processes and raises questions that are still unanswered. The project "Municipal Flood Prevention - Planners in Dialogue" of the German Institute for Urbanism (DIfU) in cooperation with DAHLEM and numerous experts from the various administrative departments of 15 German cities examined how flood prevention can be achieved within a network of municipalities. The project was funded by the German Federal Environmental Foundation (DBU) in the course of two years. The special feature of the project lies in the fact that the municipalities were represented in each case by the affected department (urban planning, environment, landscaping, roads, municipal water supply and sewerage, disaster control). In eight daily workshops, case studies were developed, where typical obstacles and problems but also possible solutions and success factors lie. Based on the practical experience of the municipalities, recommendations and solutions for administrative work within a municipality were summarized in a brochure. It serves as an aid to municipalities that want to get more involved in heavy rain protection and answers questions (FAQ) on the topics of organization, law, financing, planning/implementation and operation maintenance.
Download the brochure:
Municipal flood prevention - planners in dialogue (4,5 MB)