skip to Main Content

Closing the loop: Challenges for the future food waste valorisation

Closing The Loop: Challenges For The Future Food Waste Valorisation

Venue: TUTECH: Innovation & Start-up Campus at Startup Dock, Harburger Schloßstr. 6-12, Hamburg

Date: 17 October 2017

This event is hosted by the Hamburg University of Technology TUHH and will be followed by a visit to the Lübeck-Flintenbreite eco-village.

The conference is free of charge, with limited seats. Please find the practical information and registration form below.

Go directly to the registration form.


8:30 Reception

9:00  Welcome speeches

  • Prof. Dr.-Ing. Andreas Timm-Giel, Vice President for Research Hamburg University of Technology
  • Dr. habil. Anne Trémier, IRSTEA, Rennes, France, coordinator of the DECISIVE project

9:10  Food waste as bioresource

  • Potential, collection and recycling of biowaste and food waste: History, status-quo and trends in Germany, Dr.-Ing. Michael Kern, Senior Managing Director of Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH, Germany
  • Food waste inventory, prevention, collection and valorisation: challenges on the example of Hamburg, PD Dr. habil. Ina Körner, Hamburg University of Technology (TUHH), Germany

9:50 Decentralised circular systems, combining food waste and wastewater management in practice

  • The ecological settlement Lübeck-Flintenbreite and beyond: options for urban-rural co-operation, Prof. Dr. Ralf Otterpohl, Hamburg University of Technology (TUHH), Germany
  • From blackwater and food waste to biogas: 10 years of experience with coupled sanitation systems, Brendo Meulman, Technical Director DeSaH BV, the Netherlands

10:30 The waste food-loop

  • Vertical farms, biogas and food waste products: a circular urban farming experiment, Eric Dargent, CEO Refarmers, Lyon, France

10:50 Coffee break

11:15 Round table: Closing the loop – How we can succeed?

Food waste is generated in many sectors e.g. in retail, restaurants and households, but data on food waste are rare. Although bio-waste collection is mandatory in Germany, large amounts are not utilized. Furthermore huge amounts of food are thrown away without being eaten. The panel and the audience will discuss possibilities for the establishment of more effective food waste reduction, collection and valorisation systems under consideration of existing infrastructures.

Moderator: Andreas Findert (EnergieNetz Hamburg eG)


  • Dr. Rüdiger Siechau, CEO Stadtreinigung Hamburg
  • Brendo Meulman, DeSaH BV; operator of Dutch eco-village projects,
  • habil Anne Trémier, IRSTEA, France; DECISIVE coordinator
  • Dr.-Ing. Michael Kern, Senior Managing Director of Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH

12.30 Lunch

Field trip to Lübeck-Flintenbreite

In the year 2000, the first inhabitants moved into the settlement; today around 250 persons live in Lübeck- Flintenbreite. The settlement is supplied with water saving toilets. The wastewater from bathrooms and kitchens is treated on-site. A small-scale biogas facility is available too, which could be used for local energy production from toilet residues and food waste. Improved methods of food waste collection as biogas feedstock are investigated within the DECISIVE project. The visit includes the following activities:

  • Introduction to the settlement
  • Guided tour through the settlement
  • Information on actual DECISIVE activities in the settlement

After the visit of the settlement a mutual dinner will take place in the “Ratskeller zu Lübeck”, a traditional restaurant in the historic old town of Lübeck.

Start of the bus tour in Hamburg: 14:15 pm; in front of TUTECH building

Return of the bus: Around 22.00 pm in Hamburg/Hamburg-Harburg

The visit is primarily reserved for the DECISIVE-members but a limited number of bus seats will be available for other workshop participants as well. Please register early! Placing is done by order of registrations.


The workshop is free of charge. The field trip to Lübeck-Flintenbreite is also free of charge for DECISIVE members.

For non-DECISIVE members a 50 € fee applies for the field trip.

Find the full description of the event, its programme and practical information here.

Subscription form for the event

Accomodation’s details should be requested within a week before the event’s application date by email to compiling the preferred incoming and departure’s by the fields below.

The visit is primarily reserved for the DECISIVE project partners but a limited number of bus seats will be available for other workshop participants as well. Placing is done by order of registrations. The fee for the study visit and dinner the same day is €50.
Back To Top