山西省生活垃圾处置现状分析及渗滤液回灌技术应用研究

发布时间：2018-05-25 22:33

本文选题：渗滤液回灌 + 山西　；参考：《清华大学》2015年硕士论文

【摘要】：渗滤液是生活垃圾堆放和填埋过程中产生的一种高浓度有机废水,具有水质水量变化大、成分复杂、污染物含量高的特点,且含有大量致病菌,是生活垃圾填埋处置的重要污染源,也是公认的难处理污水,处理费用很高。山西地区季节变化显著,多年平均降水量远小于蒸发量,导致渗滤液产生量季节性差异很大,采用场内或送污水处理厂处理的方法在技术和经济上都有很大难度。渗滤液回灌法作为一种渗滤液控制方法,可以加速垃圾的稳定化进程并减量和处理渗滤液,对于降雨量小蒸发量大的干旱、半干旱地区具有较好的适用性。根据山西省生活垃圾及渗滤液处理现状的分析结果表明,已建和在建的垃圾处理项目中以填埋为主要处理方法的占总数的88%,垃圾处理仍以填埋为主要方式;采用回灌法处理渗滤液的填埋场的占所有已运行填埋场的70%,渗滤液回灌因其工艺简单、建设和运行费用低等优点在山西省已普遍采用。论文提出渗滤液“全程控制”概念,对垃圾在产生、收集、运输以及处理处置的全生命周期内统筹考虑渗滤液的控制,总结了渗滤液预控制、调蓄和场内循环等减量技术和实施措施。对山西省典型垃圾填埋场渗滤液的回灌研究表明,采取回灌法可以实现渗滤液的最大化减量。论文采取理论分析结合实际核算的方法提出了不同规模填埋场实现渗滤液最大化减量的边界参数。针对山西省填埋垃圾渗滤液产生特征和气候条件,处理规模为100、200、300、400、500t/d的填埋场,其渗滤液调节池容积应分别达到2500、3900、5100、6300、7000m3,用于回灌蒸发的面积(包括垃圾堆体、绿化带等)应分别达到30300、41750、52100、64550、72800m2。按本论文所提出的渗滤液全程控制措施以及边界参数进行填埋场的设计和建设,不仅可以实现填埋场渗滤液的最大化减量,还能达到节省投资、减少运行成本的目的。论文对于山西省生活垃圾填埋场渗滤液的回灌和减量的工程设计与应用提供一定的理论基础。渗滤液回灌法是一种较为经济的填埋场运行管理及渗滤液处理方式,在山西乃至北方地区具有广阔的应用前景,即使是对于有污水处理站的填埋场,回灌法仍然是其污水最大化减量的必要补充环节。
[Abstract]:Leachate is a kind of high concentration organic wastewater produced in the process of municipal solid waste disposal and landfill. It has the characteristics of large variation of water quality and quantity, complex composition, high pollutant content, and a large number of pathogenic bacteria. It is an important pollution source for landfill disposal, and it is also recognized as difficult to treat sewage. The cost of treatment is very high. The seasonal variation in Shanxi is remarkable, and the annual average precipitation is far less than evaporation, which leads to the great seasonal difference of leachate production. It is very difficult to treat the leachate in the field or in the sewage treatment plant in terms of technology and economy. As a leachate control method, leachate recharge method can accelerate the stabilization process of garbage and reduce and treat leachate. According to the analysis of the present situation of municipal solid waste (MSW) and leachate treatment in Shanxi Province, the results show that the landfill is the main treatment method in the MSW disposal projects, and the landfill is still the main way to treat the MSW. The landfill of leachate treated by recharge method accounts for 70% of all the landfills in operation. The leachate recharge has been widely used in Shanxi province because of its simple technology and low construction and operation cost. In this paper, the concept of "whole process control" of leachate is put forward, and the control of leachate in the whole life cycle of generation, collection, transportation and disposal is considered as a whole, and the pre-control of leachate is summarized. Reduction techniques and implementation measures such as regulation and in-field circulation. The study on the recharge of leachate from typical landfills in Shanxi Province shows that the maximum reduction of leachate can be realized by the method of recharge. In this paper, the boundary parameters of leachate maximization in different scale landfill sites are proposed by theoretical analysis combined with practical accounting. According to the characteristics of landfill leachate production and climatic conditions in Shanxi Province, the volume of leachate regulating tank should be up to 2500 ~ 3900 ~ 5100 ~ 6300 ~ 6300m ~ (3) and the area used for evaporation (including garbage dump, green belt, etc.) should reach 303004175052100m ~ (64550) ~ 72800m ~ (2), respectively, in a landfill site with a scale of 100200300400500t/d. According to the whole process control measures and boundary parameters proposed in this paper, the design and construction of landfill can not only realize the maximum reduction of leachate in landfill, but also save investment and reduce operation cost. This paper provides a theoretical basis for the engineering design and application of leachate recharge and reduction in Shanxi municipal solid waste landfill. Leachate recharge is a more economical method for landfill operation management and leachate treatment. It has a broad application prospect in Shanxi and even in northern China, even for landfill with sewage treatment station. The recharge method is still a necessary supplement to maximize the reduction of sewage.
【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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