Author/Authors :
Zhang, Huijie Faculty of Civil Engineering and Mechanics - Jiangsu University, China , Li, Zequan Faculty of Civil Engineering and Mechanics - Jiangsu University, China , Xu, Haixia Faculty of Civil Engineering and Mechanics - Jiangsu University, China , Guo, Xinqian Faculty of Civil Engineering and Mechanics - Jiangsu University, China , Wu, Huiling Faculty of Civil Engineering and Mechanics - Jiangsu University, China , Sun, Junyi Faculty of Civil Engineering and Mechanics - Jiangsu University, China
Abstract :
Abstract
Background:
In bio-reactor landfills, both moisture and temperature have a significant impact on the bio-degradation processes. In order to speed up the leachate recirculation, a new drainage system is proposed to build a space network of bonded whole waste tyres in landfills.
Objective:
In this study, a coupled dual-permeability flow and the heat transfer model was constructed to study the interaction between leachate migration and temperature evolution.
Results and Conclusion:
The established model was applied to a simplified bio-reactor landfill and the simulation results demonstrated that the presence of waste tyres could significantly speed up the heat transfer. and the intermittent injection and the varying injection pressure might affect the distribution of temperature as well. Additionally, cooling the leachate injected could be another measure in avoiding the occurrence of hot spots in landfills.
Keywords :
Bioreactor landfill , Leachate recirculation , Bonded waste tyres , Temperature distribution , Cooling , Bio-degradation processes
