Institute of Environmental Technology and Energy Economics, Hamburg University of Technology, Harburger Schlossstr. 36, 21079 Hamburg, Germany.
Waste Manag. 2013 Oct;33(10):2074-82. doi: 10.1016/j.wasman.2013.02.004. Epub 2013 Mar 7.
The time frame required for post-closure care of Municipal Solid Waste (MSW) landfills is often assessed over several decades or centuries. One possibility to significantly shorten this period and, at the same time, improve the emission behavior exists with in situ aeration. Positive effects in connection with this method for biological stabilization have been investigated and published elsewhere. However, until today neither generally accepted monitoring guidelines nor completion criteria have been defined. With the paper on hand the authors propose a methodology for the assessment of both, total and remaining stabilization periods for aerated landfills. The central component of this methodology is a carbon balance. The latter is based on a detailed waste characterization in combination with online monitoring of the emissions (gas and leachate). The methodology is exemplarily demonstrated by means of data derived from a full scale project in Northern Germany. Here it could be shown that the predicted aeration period of approximately 6.4years was sufficient to bio-stabilize the landfill. Furthermore, proposals for the completion of landfill aeration are presented. In this connection, carbon balance is of particular importance since the amount of biodegradable organic carbon mainly determines the emission potential. Additional parameters, aiming at a validation of the state of biological stabilization achieved during aeration are proposed and described.
城市固体废物（MSW）填埋场封场后护理所需的时间框架通常需要几十年或几个世纪来评估。一种可以显著缩短这个时间并同时改善排放行为的可能性是原位曝气。已经对这种生物稳定化方法的积极影响进行了研究和发表。然而，迄今为止，既没有定义普遍接受的监测指南，也没有定义完成标准。本文的作者提出了一种评估曝气填埋场总稳定期和剩余稳定期的方法。该方法的核心组件是碳平衡。后者基于详细的废物特性描述以及排放（气体和渗滤液）的在线监测。该方法通过来自德国北部的一个全规模项目的数据进行了实例演示。结果表明，预计约 6.4 年的曝气期足以使垃圾填埋场实现生物稳定化。此外，还提出了完成垃圾填埋场曝气的建议。在这方面，碳平衡尤为重要，因为可生物降解有机碳的数量主要决定了排放潜力。还提出并描述了旨在验证曝气过程中达到的生物稳定化状态的其他参数。
