Invited Session: Circular Economy

Circular Economy in Hamburg

Tuesday, September 26, 2017
8:45 – 9:15
Convention Center

After closing a waste incineration plant in Hamburg, Germany, the planning of a new efficient and sustainable recycling center on the same location started. The prospective plant has to fulfil the main targets of supporting the recycling offensive in Hamburg: extracting recyclable material from municipal waste and generating climate-friendly heat and power. Stadtreinigung Hamburg is developing this center for resources and energy, ZRE (Zentrum für Ressourcen und Energie), which consists of five different units interacting closely with each other. The ZRE can generate up to 61 MW of heat, 11 MW electrical power and 8 million m3 biogas in total. As only a small part of this is used for self-supply, the ZRE can cover at least 20 percent of the district heating demand in the western part of the city, thus supporting the exit from fossil fuel energy for district heating purposes in Hamburg. Consequently, the ZRE is playing a vital role in the redesign of Hamburg’s heat supply and its ability to reduce climate-damaging greenhouse gas emissions. The ZRE is the first waste treatment plant (in Germany) to combine nearly all kinds of waste treatment technologies: mechanical, biological and thermal processes.

Following this presentation, participants will be able to understand and evaluate different ways of waste treatment with reference to gain reusable products and generate climate-friendly heat and electrical power. Moreover, the participants will get an impression of a high sophisticated waste treatment facility with maximum output of heat, electrical power and recyclable material and minimal interplant transportation. Afterwards, they will evaluate the meaning of circular economy not only for Hamburg, but worldwide.


Prof. Dr.-Ing. Rüdiger Siechau, CEO, Stadtreinigung Hamburg, Germany

Rudiger Siechau

Prof. Dr.-Ing. Rüdiger Siechau studied mechanical engineering at the Technical University of Aachen. From 1980 to 1983, he was a Ph.D. student at the Institute of Nuclear Materials in the Nuclear Research Centre of Jülich. Between 1983 and 1994, he worked in engineering companies (for example UHDE, Thyssen). Since 1995, Prof. Siechau has been managing director of Stadtreinigung Hamburg, and since 2007 he has been chairman of the management. In addition, Prof. Siechau also is committed in the field of development of young professionals. For this, he gives lectures at the Technical University of Hamburg; he was appointed to honorary professor in 2013. Prof. Siechau is member of several organizations. Since 2013, he has been part of the ISWA Board as National Member Representative.