Postclosure Long-Term Settlement for MSW Landfills

Abstract

A mathematical model is developed to estimate the settlement attributable to biodegradation for municipal solid waste (MSW) landfills incorporating the effects of pH, temperature, and moisture content. The post closure long-term settlement is determined by combining mechanical compression and settlement attributable to biodegradation. The coefficient of mechanical compression was observed to be highly sensitive in the mechanical compression compared with temperature, pH, and moisture content in the biodegradation-induced settlement model. The developed model was validated with the field data. The biodegradation-induced settlement model was found to be a better result than the existing model.