Optimisation of Ship-generated Waste Collection

From 2013 to 2014
On 9 September 1996 in Strasbourg, the CDNI Treaty “Convention on the collection, deposit and reception of waste produced during navigation on the Rhine and inland waterways” (hereinafter referred to as ‘CDNI’) came into force. The CDNI encompasses internationally standardized regulations concerning the collection and treatment of waste originating from inland navigation. The CDNI was signed by The Netherlands, Germany, France, Switzerland, Luxembourg and Belgium. The CDNI states that the involved countries are required to establish a ‘sufficiently dense network of reception facilities’ to collect the waste originating from inland navigation, without actually detailing any specific criteria of such a network.
TML, in corporation with Ecorem, has studied the extent to which the existing collection network in Flanders meets the requirements of the CDNI. In addition, it was necessary to investigate whether the network currently meets the demands imposed by the inland navigators and whether it will still be sufficient in the future. Where the current system fails to meet any of the requirements, suggestions for improvement need to be provided, including possible methods of enforcement and any needs for regulatory alterations. As multiple authorities govern inland navigation in Flanders, cooperation possibilities between these entities had to be identified as well.
The first step was to analyse the existing collection network, based on the spatial distribution of the (different types of) collection facilities, the navigation intensity along the different waterways and the average amounts of waste collected. Subsequently, three alternatives for the existing system were discussed:
  • Optimisation of the existing system
  • Transition to a system with exclusive access to the collection network facilities for the inland navigation sector
  • Transition to a system with predominantly mobile reception facilities

A number of different aspects such as cost efficiency, environmental performance,, and conformity to the policies in the neighbouring countries are discussed for each alternative. The alternative of choice consists of a combination of the strong aspects of each separate alternative and comprises:
  • Use of a bilge truck in the region around Ghent
  • Reduction of the amount of collection facilities for domestic waste
  • Improvement of segregation possibilities for household waste
  • Construction of an additional, extensive reception facility.
Based on the findings of the study, we concluded that Flanders has an extensive and well organised collection system for waste originating from inland navigation, which, with a number of modifications, can be optimized further.
On an international level, a need for better coordination between the participating countries exists for the collection of domestic and dangerous waste. Although the CDNI stipulates that the participating countries need to take uniform measures for the finance and collection of dangerous waste, this does not currently occur. Furthermore, regarding part B of the CDNI, international dialogue is required to clarify the collection requirements for a number of substances.


From 2013 to 2014


ECOREM (project leader)

Our team

Griet De Ceuster, Kristof Carlier, Gitte Van Den Bergh
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