# MBT

## Construction and Monitoring of Test Areas for MBT Disposal

### Aim:

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.