RESEARCH ARTICLE


Coupled Analysis of Leachate Recirculation and Heat Transfer for a Landfill with Buried Waste Tyres



Huijie Zhang*, Zequan Li, Haixia Xu, Xinqian Guo, Huiling Wu, Junyi Sun
Faculty of Civil Engineering and Mechanics, Jiangsu University, No. 301 Xuefu Road Zhenjiang, Jiangsu, 212013, China


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Creative Commons License
© 2018 Zhang et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Faculty of Civil Engineering and Mechanics, Jiangsu University, No. 301 Xuefu Road Zhenjiang, Jiangsu, 212013, China; Tel: 0086-0511-88797036; E-mail: zhanghj@ujs.edu.cn


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.