Landfill Bio-Stabilization through Aerobic Aeration

by Hilary Haskell

Landfill aeration serves as an economically and technologically viable option for decreasing the duration of landfill after-care, through the bio-stabilization of landfill contents. Ritzkowski and Stegmann (2013) based their analysis on the determination of carbon balances through waste characterizations and online monitoring. The biodegradable organic carbon (BOC) content of a landfill is the main determinant affecting landfill bio-stabilization rates, while landfill settlements and temperatures are also important indicators of stabilization. Using BOC, the authors determined the total and remaining stabilization periods for aerated landfills. This study used a landfill in Northern Germany that required 6.2 years to stabilize after a volume of 63 million m3 of air had been applied to increase the rate of bio-stabilization by a factor of six. These findings suggest that landfill aeration may substantially decrease time and costs associated with landfill after-care by reducing cumulative leachate and landfill gas emissions. Continue reading