Construction and Monitoring of Test Areas for MBT Disposal
Client: Landkreis Northeim, Abfallzweckverband
Head of project: Prof. Dr.-Ing. Klaus Fricke
Coordinator: Dipl.-Ing. Kai Münnich
Location: Northeim, Lower Saxony, Germany
Since 2005 only treated waste (from incineration or MBT) is allowed to be deposited on landfills. Especially the mechanical treatment leads to a totally different behaviour of the waste during the emplacement and influences strongly the long-term behaviour of the landfill body. Because of the smaller diameter of the MBT waste the emplacement density is increasing, and as a result the hydraulic conductivity and also the settlement is decreasing. On the other hand the smaller material size reduces the effect of fibres on the stability. In the last years a lot of laboratory investigations had been made in order to determine the MBT behaviour under fixed boundary conditions. But only a few tests had been made on landfill areas under practical conditions.
Therefore a project with the following main aspects had been started:
construction of a test area for long-term monitoring
determination of the optimal engines for the emplacement
determination of emplacement densities
determination of the water balance of the test area
determination of the leachate quality
determination of the settlement
determination of gaseous emissions
These tests on the landfill area are completed by laboratory tests to determine the fundamental physical and bio-chemical behaviour of the waste material.