Hydro-mechanical behavior of Municipal Solid Waste subject to leachate recirculation in a large-scale compression reactor cell
Hydro-mechanical behavior of Municipal Solid Waste subject to leachate recirculation in a large-scale compression reactor cell
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DOI：
10.1016/j.wasman.2006.01.025
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发表时间：
2007-01-01
期刊：
影响因子：
8.1
通讯作者：
Gourc, Jean-Pierre
中科院分区：
文献类型：
--
作者：
Olivier, Franck;Gourc, Jean-Pierre
本文介绍了在 1m(3) 仪器室中对城市固体废物 (MSW) 进行一维压缩的实验室实验结果。重点是材料在限制和渗滤液渗透条件下的水力机械行为，复制了真实规模的垃圾填埋场中发现的情况。详细介绍了设备的操作以及测试方法和监控程序。对两个废物样本进行了测试：第一个延长了 10 个月（“控制测试”），第二个延长了 22 个月（渗滤液再循环的“增强测试”）。报告关于短期（取决于压力）和长期（取决于时间）结算的合并数据。接下来的讨论基于初级和次级压缩比的导出值。提出了压缩参数和生物降解过程之间的相关性。特别是，结果清楚地突出了渗滤液再循环对废物沉降的影响：不到 2 年就达到了 24% 的二次变形（相当于压缩率增加了 5 倍），干物质损失了 17.9%。考虑到在全球实验生物反应器上进行的少数监测项目得出的结果，提出了比较。最后，讨论了废物的水力特性，以评估有效孔隙度和渗透率。 (c) 2006 Elsevier Ltd. 保留所有权利。
The paper presents the results of a laboratory experiment on Municipal Solid Waste (MSW) subjected to one-dimensional compression in a 1m(3) instrumented cell. The focus was on the hydro-mechanical behavior of the material under conditions of confinement and leachate percolation that replicate those found in real-scale landfills. The operation of the apparatus is detailed together with the testing methodology and the monitoring program. Two samples of waste were tested: the first extended over a period of 10 months ('Control Test') and the second for 22 months ('Enhanced Test' with leachate recirculation). Consolidation data is reported with regard to both short-term (stress-dependent) and long-term (time-dependent) settlements. A discussion follows based on the derived values of primary and secondary compression ratios. Correlations between compression parameters and the biodegradation process are presented. In particular, results clearly highlight the effect of leachate recirculation on waste settlement: 24% secondary deformation reached after slightly less than 2 years (equivalent to a 5-fold increase in compressibility) and 17.9% loss of dry matter. Comparisons are proposed considering the results derived from the few monitoring programs conducted on experimental bioreactors worldwide. Finally, the hydraulic characterization of waste is discussed with regard to the evaluation of effective porosity and permeability. (c) 2006 Elsevier Ltd. All rights reserved.