Proof of efficacy of capillary barriers for capping of a sanitary landfill

The city of Bayreuth is interested in capping its sanitary landfill with a capillary barrier system. Preliminary investigations, made by using a specially developed assurance programme, indicated that the selected materials will satisfy the demands. Two experimental fields with integrated large scale lysimeters have been built on the landfill. Now they are being monitored under natural weather conditions. The measurements include continuous logging of runoff from the layers, precipitation, tension, water content, soil temperature and weather conditions. The first results show that the capillary barrier system works well. Now the fields will be observed for some years. Specific investigations of the effects of penetration, settlement and gas are being currently carried out in the laboratory and in the field.

• 1 INTRODUCTION

• 2 PRELIMINARY INVESTIGATIONS

• 3 CONSTRUCTION OF ON-SITE EXPERIMENTAL FIELDS

• 4 MONITORING OF EXPERIMENTAL FIELDS

• 5 FURTHER INVESTIGATIONS

• 6 ACKNOWLEDGEMENTS

• 7 REFERENCES