Influence of aeration modes on leachate characteristic of landfills that adopt the aerobic-anaerobic landfill method

Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, Yongxia Hao

研究成果: ジャーナルへの寄稿学術誌査読

26 被引用数 (Scopus)

抄録

As far as the optimal design, operation, and field application of the Aerobic-Anaerobic Landfill Method (AALM) are concerned, it is very important to understand how aeration modes (different combinations of aeration depth and air injection rate) affect the biodegradation of organic carbon and the transformation of nitrogen in landfill solid waste. Pilot-scale lysimeter experiments were carried out under different aeration modes to obtain detailed information regarding the influence of aeration modes on leachate characteristics. Results from these lysimeter experiments revealed that aeration at the bottom layer was the most effective for decomposition of organic carbon when compared with aeration at the surface or middle layers. Moreover, the air injection rate led to different nitrogen transformation patterns, unlike the lesser influence it has on organic carbon decomposition. Effective simultaneous nitrification and denitrification were observed for the aeration mode with a higher air injection rate (=1.0. L/min). On the other hand, the phenomenon of sequenced nitrification and denitrification could be observed when a low air injection rate (=0.5. L/min.) was employed. Finally, it is concluded that, for AALM, air injection with a higher air injection rate at the deepest layer near the leachate collection pipe tends to accelerate the stabilization of landfill waste as defined in terms of the enhancement of denitrification as well as organic carbon decomposition.

本文言語英語
ページ(範囲)101-111
ページ数11
ジャーナルWaste Management
34
1
DOI
出版ステータス出版済み - 1月 2014

!!!All Science Journal Classification (ASJC) codes

  • 廃棄物管理と処理

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