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首页> 外文会议>The 23rd International Conference on Solid Waste Technology and Management(ICSW 2008) >Municipal Solid Waste Anaerobic Degradation under two different leachate recycling regimes
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Municipal Solid Waste Anaerobic Degradation under two different leachate recycling regimes

机译：两种不同的渗滤液回收制度下的城市生活垃圾厌氧降解

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Appropriate solid waste management seeks not only to provide final waste disposal, but to ensure proper landfill management. Leachate and biogas production need to be properly managed, and in order to accomplish that, local and reliable information is needed, yet, in Mexico and other developing countries there is an extensive data void. The aim of this work was to study the anaerobic degradation of MSW as (1) a mixture of organic and inorganic material and (2) the organic fraction of solid waste, under two different moisture regimes: 70 and 80% (wet basis). Twelve bioreactors -lab scale-were set up, six of them contained a mixture of municipal solid waste (MSW), and the rest contained organic fraction MSW (OM) only. All bioreactors operated under continuous leachate recirculation for three months. Studied parameters included pH, moisture content, total volatile solids, chemical oxygen demand, biogas and methane. The degradation of OM resulted on the onset of the methanogenic phase by day 34 and 45 in the bioreactors at 80 and 70% moisture regime, respectively. Bioreactors packed with MSW at 70% moisture content reached methanogenic phase at day 57. Surprisingly, no methane production was detected on bioreactors that operated at 80% moisture content. In addition, leachate parameters suggested that the OM bioreactors presented an earlier stabilization, COD degradation along with the highest methane concentration in biogas.
机译：适当的固体废物管理不仅要提供最终的废物处理，还要确保适当的垃圾掩埋管理。渗滤液和沼气的生产需要得到适当的管理，为了做到这一点，需要本地和可靠的信息，但是，在墨西哥和其他发展中国家，存在大量的数据空白。这项工作的目的是研究MSW的厌氧降解，其为（1）有机和无机材料的混合物和（2）固体废物的有机部分，在两种不同的水分含量下：70％和80％（湿基）。建立了12个实验室规模的生物反应器，其中六个包含城市固体废物（MSW）的混合物，其余仅包含有机部分MSW（OM）。所有生物反应器在渗滤液连续循环下运行三个月。研究的参数包括pH值，水分含量，总挥发性固体，化学需氧量，沼气和甲烷。在生物反应器中，分别在80％和70％湿度下的第34和45天，甲烷降解开始于产甲烷阶段。在第57天，装有70％水分的MSW的生物反应器达到了产甲烷阶段。令人惊讶的是，在80％水分的生物反应器上未检测到甲烷产生。此外，渗滤液参数表明，OM生物反应器呈现出更早的稳定化，COD降解以及沼气中最高的甲烷浓度。

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