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Geotechnical behaviour of mechanically-biologically pretreated residual waste

: Scheelhaase, T.; Bidlingmaier, W.; Klümper, A.; Maile, A.; Rechberger, M.

Christensen, T.H. ; Environmental Sanitary Engineering Centre -CISA-, Cagliari:
SARDINIA 2001. Proceedings. Eighth International Waste Management and Landfill Symposium. Vol.3: Barriers, waste mechanics and groundwater pollution : 1 - 5 October, S. Margerita di Pula - Cagliari, Sardinia, Italy
Cagliari: CISA, 2001
International Waste Management and Landfill Symposium <8, 2001, Santa Margerita di Pula>
Fraunhofer UMSICHT Oberhausen ()
Abfall; Vorbehandlung; mechanisch; biologisch; Deponie; landfill; waste; pre-treatment; mechanical; biological

Practical-experimental trials have been carried out in order to describe the geotechnical reactions of residual waste after mechanical-biological pre-treatment residual waste. Main parameters to be determined were pressure resistance, compactability as well as shear strength and the permeability of the MBP-waste. Due to the MBP the grain density increase while the volatile solids decrease. A correlation between this parameters can be shown. The Proctor density of MBP-materials were about 0.87 Mg dm/m3 up to 1.02 Mg dm/m3. The determined shear parameter indicate a rather high stability of a MBP-landfill. Due to a low organic content settlings processes do not occur witch could be shown in the compression tests. Permeability tests results in very low water conductivity of only kf = 1·10-8 m/s, depending on the density of the landfill body. By MBP the properties of the residual waste considerably change and the planning of landfills has to be modified.