城市生活垃圾降解-压缩特性试验研究

赵燕茹; 谢强; 张永兴; 张永荐; 赵呈冉

doi:10.11779/CJGE201410014

城市生活垃圾降解-压缩特性试验研究 English Version

赵燕茹^{1, 2},
谢强^1,2,,
张永兴^{1, 2},
张永荐^{1, 2},
赵呈冉³

1. 重庆大学土木工程学院,重庆400045;
2. 山地城镇建设与新技术教育部重点试验室(重庆大学),重庆 400045;
3. 兰州铁道设计院有限公司,甘肃兰州 730000

基金项目: “十二五”国家科技支撑计划项目（2012BAJ22B06）

详细信息

作者简介:
赵燕茹(1983- ),男,博士研究生,主要从事岩土力学理论与测试研究工作。E-mail: zhaoyanru54022@163.com。

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出版历程
- 收稿日期: 2014-02-17
- 发布日期: 2014-10-19

Experimental study on biodegradation-compression properties of municipal solid waste

1. College of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. Key Laboratory of New Technology for Construction of Cities in Mountain Areas (Chong Qing University), Ministry of Education, Chongqing 400045, China;
3. Lanzhou Railway Survey and Design Institute Co., Ltd., Lanzhou 730000, China

摘要

摘要: 为了研究垃圾土在好氧和厌氧阶段因外部温度场的变化对降解特性的影响,选取重庆市某垃圾场作为研究对象,进行了两种不同温度控制的降解试验,同时对渗滤液中可溶解有机碳含量进行了追踪测试,试验结果表明：①不同有机物含量垃圾土试样,当外部温度场小于22℃或者大于45℃时,温度对有机质降解的影响较小;②当温度在22℃~45℃时,根据垃圾土产气量、渗滤液溢出量以及质量损失率得出此温度区间对垃圾中有机质的降解起明显加速作用,降解反应程度在41℃时最大;③根据温度-质量损失率关系,推导了考虑温度效应的分阶段垃圾土降解率计算模型,并且得出垃圾土的降解率在0~180 d符合自然降解规律,为时间的函数;在180~360 d,降解率为时间和温度的双重函数;模型验证结果表明,计算结果与试验结果能够比较好的吻合。
- 垃圾土 /
- 温度 /
- 渗滤液 /
- 降解率 /
- 压缩
Abstract: In order to study the effect of external temperature on the biodegradation properties of municipal solid waste (MSW) at both aerobic and anaerobic phases, two kinds of controlled temperature fields are applied during the biodegradation tests in the laboratory, and the dissolved organic carbon is monitored and recorded using the reconstructed fresh shredded MSW with different organic contents, collected from landfills located in Chongqing. During the experimental process of 0~360 days, the biodegradation tests result show: (1) When the external temperature field is less than 22℃ or more than 45℃, the effect of temperature on the biodegradation is proved to be limited and the degradation conforms to the natural process. (2) According to the monitored data of biogas, leahcate production and losses of quality of MSW when the external temperature varies from 22℃ to 45℃, the effect of temperature on the biodegradation of MSW is gradually obvious. Moreover, the degradation speed of MSW reaches the maximum value when the temperature reaches 41℃. (3) Based on the experimental results of leachate production and settlement, a divided new mode of degradation rate for MSW is proposed which can better consider the temperature effect. From 0~180 days, the biodegradation rate of the model is time-depended, and the rules of biodegradation are fitting to the natural decomposition of 0~180 days. However, the biodegradation of MSW in later biodegradation tests must consider the temperature effect and the degradation is the function of time and temperature from 180~360 days. In the end, the comparison between the model calculations and test data proves that the proposed divided model can fit the experimental data very well.
- municipal solid waste /
- temperature /
- leachate /
- degradation rate /
- compression

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参考文献(23)

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城市生活垃圾降解-压缩特性试验研究 English Version

作者简介: 赵燕茹(1983- ),男,博士研究生,主要从事岩土力学理论与测试研究工作。E-mail: zhaoyanru54022@163.com。

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Experimental study on biodegradation-compression properties of municipal solid waste

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出版历程

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作者简介:
赵燕茹(1983- ),男,博士研究生,主要从事岩土力学理论与测试研究工作。E-mail: zhaoyanru54022@163.com。