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http://dx.doi.org/10.17137/korrae.2010.18.2.45

A field study on early stabilization of waste landfill using air injection and leachate recirculation  

Yoon, Seok-Pyo (Department of Environmental Engineering, Semyung University)
Zhao, Xin (Department of Environmental Engineering, Semyung University)
Lee, Nam-Hoon (Department of Environmental Engineering, Anyang University)
Jeon, Yeon-Ho (H-Plus Eco Ltd.)
Byun, Young-Deog (H-Plus Eco Ltd.)
Ahn, Young-Mi (Korea Environment Corporation)
Min, Ji-Hong (Korea Environment Corporation)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.18, no.2, 2010 , pp. 45-54 More about this Journal
Abstract
Field study was conducted for 5 months to investigate the effect of leachate recirculation on aerobic landfill stabilization at active landfilling site. The area of field experiment was $24{\times}24m$ and 9 vertical air injection wells with screen ranging 3~9 m were installed. Aerobic landfill operation for 5 months increased average internal landfill temperature to $70^{\circ}C$ and 8 % of landfill height was settled down. $94m^3$ of leachate was recirculated for 1 month to increase moisture content of landfill to favor microbial degradation of organic matter, which resulted in temporary increase of groundwater level and anaerobic environment. But leachate recirculation triggered increase of internal landfill temperature of neighboring monitoring well. Because excessive leachate recirculation decreased internal landfill temperature by cooling effect, internal landfill temperature should be checked to avoid abrupt decrease of temperature during leachate recirculation. Also, to prevent anaerobic environment, intermittent leachate recirculation was recommended.
Keywords
aerobic landfill operation; leachate recirculation; field study; temperature;
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