上海老港生活垃圾填埋场填埋气快速收集系统应用研究

发布时间：2018-06-01 07:29

本文选题：生活垃圾填埋场 + 填埋气　；参考：《清华大学》2015年硕士论文

【摘要】：生活垃圾填埋气是重要的温室气体,也是清洁的可再生能源,对填埋气的控制和利用研究已成为垃圾填埋处置技术的重要组成部分。无论后端对垃圾填埋气进行何种处理,前端快速高效的收集是项目实施的关键,而收集方式必须适应我国生活垃圾填埋气产气速率较快,迅速到达产气高峰,然后快速下降的特点。上海老港生活垃圾填埋场是典型的“滩涂型”卫生填埋场,地势低洼,填埋深度较浅,产气及收集条件不佳。针对老港综合填埋场,通过优化填埋作业分区和填埋气收集方式,设计符合实际情况的收集系统方案,提高填埋气的产生及收集效率,具备较强的现实意义。本文对上海老港生活垃圾填埋场填埋气快速收集系统应用的研究主要分为四个部分:一是对IPCC推荐产气模型及Marticorena动力学模型进行比较,确定采用Marticorena动力学模型进行产气量预测,并合理确定计算参数;二是对综合填埋场原有不合理填埋分区作业方式进行优化,形成一个多分区的填埋和填埋气收集的方案,大大降低气体损失率;三是通过对比,采用横向水平抽气方式,并进行整个填埋库区横向水平抽气系统详细方案设计,为同类型的垃圾填埋气收集项目提供设计示范;四是设计现场抽气实验详细方案,并进行现场抽气实验,根据实验数据,进行收集率评估。根据研究,得到主要结论如下:(1)老港综合填埋场一期工程2012年起始填埋气体产量为2860.28万m~3/a,2027年最高峰填埋气体产量为15135.99万m~3/a,2039年填埋气体产量为1373.11万m~3/a,26年总产气量为246265.07万m~3;(2)将填埋库区划分为18个独立单元,各单元填埋作业完成后即刻进行整体封场并抽气,计算优化后的填埋分区方案作业期间的填埋气损失率仅为24.6%;(3)多分区短填埋作业方式,配合横向水平抽气方式,填埋气收集率可高于60%;(4)确定同等抽气条件下,横向抽气系统收集率更高,填埋气品质更优。
[Abstract]:Landfill gas is not only an important greenhouse gas, but also a clean renewable energy. The control and utilization of landfill gas has become an important part of landfill disposal technology. No matter what kind of landfill gas is disposed at the back end, the key to the project implementation is to collect the landfill gas quickly and efficiently at the front end. However, the collection method must be adapted to the rapid gas production rate of domestic solid waste landfill gas in our country and reach the gas production peak rapidly. Then the feature of rapid decline. Shanghai Laogang Municipal solid waste Landfill is a typical "beach type" sanitary landfill with low topography, shallow landfill depth, poor gas production and collection conditions. In view of Laogang Comprehensive Landfill site, it is of great practical significance to design a collection system scheme in accordance with the actual situation by optimizing the landfill operation partition and landfill gas collection mode, and to improve the generation and collection efficiency of landfill gas. In this paper, the application of the landfill gas rapid collection system in Shanghai Laogang Municipal solid waste Landfill is mainly divided into four parts: first, the IPCC recommended gas production model and the Marticorena kinetic model are compared, and the Marticorena kinetic model is used to predict the gas production. And reasonably determine the calculation parameters; second, optimize the operation mode of the original unreasonable landfill zoning of the comprehensive landfill site, form a multi-partition landfill and landfill gas collection scheme, greatly reduce the gas loss rate; third, through comparison, Adopting horizontal air extraction mode and carrying out the detailed scheme design of horizontal pumping system in the whole landfill reservoir area to provide a design demonstration for the same type of landfill gas collection project; fourth, to design the detailed scheme of field pumping experiment, The collection rate was evaluated according to the experimental data. According to the study, The main conclusions are as follows: (1) the first phase of the Laogang Comprehensive Landfill Project started at 28.6028 million mm3 / a in 2012, the highest landfill gas output in 2027 was 151.3599 million mm2 / 3 / a, the landfill gas output in 2039 was 13.7311 million mm2 / 3 / a, and the total gas output in 26 years was 2.4626507 billion mm2 / 32respectively. The buried reservoir area is divided into 18 separate units. After the completion of each unit landfill operation, the whole field is sealed and the air is pumped. The landfill gas loss rate during the operation of the optimized landfill zoning plan is only 24.6x3) and the multi-partition short landfill operation mode is combined with the horizontal air pumping mode. The collection rate of landfill gas can be higher than that of 60%.) under the same extraction condition, the collection rate of the horizontal pumping system is higher and the quality of the landfill gas is better.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X799.3

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