Simulation Study on the Dehydration and Settlement Characteristics of Surface Waste in Landfill

2012 International Conference on Biomedical Engineering and Biotechnology Pub Date : 2012-05-28 DOI:10.1109/ICBEB.2012.355

Zhou Xiao-zhi, Sang Shuxun, Cao Liwen, Cheng Yunhuan

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Abstract

Surface waste dehydration and settlement process has a direct influence on leachate production and subsequent landfill system stability assessment. In this paper, the author carried out a simulation experiment and studied the effect of initial moisture content, reaction temperature, compacted density and waste granularity on surface waste dehydration and settlement, which provided a theoretical basis for the optimization of traditional landfill structure and operations. The results show that daily evaporation decreases gradually following the piecewise exponential function curve, and reaction temperature has a significant effect on surface waste evaporation. When reaction temperature increased from 25°C to 45°C, cumulative evaporation increased from 162.7g/kg MSW to 220.6g/kg MSW in the simulation experiment. Initial moisture content significantly affects leachate production of surface waste, and leachate output increased with moisture content increasing Reaction temperature had a significant influence on moisture loss, and it increases with reaction temperature. Compacted density significantly effects the settlement of landfill body. With the increase of compacted density, accumulative settlement decreases rapidly.

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填埋场地表垃圾脱水沉降特性模拟研究

地表垃圾脱水沉降过程直接影响到渗滤液的产生和随后的填埋场系统稳定性评价。本文通过模拟实验，研究了初始含水率、反应温度、压实密度和垃圾粒度对地表垃圾脱水沉降的影响，为传统填埋场结构和操作的优化提供理论依据。结果表明:日蒸发量沿分段指数函数曲线逐渐减小，反应温度对地表废弃物蒸发量影响显著;当反应温度从25℃升高到45℃时，模拟实验中累积蒸发量从162.7g/kg MSW增加到220.6g/kg MSW。初始含水率对地表垃圾渗滤液产生量有显著影响，渗滤液产生量随含水率的增加而增加。反应温度对水分损失有显著影响，且随反应温度的升高而增加。压实密度对堆填体沉降有显著影响。随着压实密度的增加，累积沉降迅速减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 International Conference on Biomedical Engineering and Biotechnology

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