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首页> 外文会议>The 22nd International Conference on Solid Waste Technology and Management(ICSW 2007) >LEACHATE AND LANDFILL GAS EXTRACTION FROM AN UNLINED LANDFILL
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LEACHATE AND LANDFILL GAS EXTRACTION FROM AN UNLINED LANDFILL

机译：从无衬里垃圾填埋场中渗滤液和垃圾填埋气的提取

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In order to deal with high leachate levels within the Sioux Falls Regional Sanitary Landfill, R. W. Beck worked with the City of Sioux Falls to design a dual-phase leachate and landfill gas extraction system in the unlined 100-acre portion of the City of Sioux Falls Landfill, located approximately 6 miles west of Sioux Falls, South Dakota. This $1.1 million dollar system consists of 19 (of approximately 100 eventual) vertical leachate and landfill gas extraction wells, connecting laterals and headers, leachate drains, and lift stations to dewater the Landfill. Historically, high leachate levels (up to 60 feet above the base of the landfill) needed to be drawn down in order to satisfy regulatory closure requirements and allow landfill gas collection and recovery. R. W. Beck designed a unique extraction system utilizing a single well casing and drain system combining both gas and liquids recovery. Pneumatic leachate pumps were installed in each well, discharging leachate to the perimeter landfill gas header pipe, where the leachate and condensate are separated out at six different lift stations.rnWhen designing this system, R. W. Beck evaluated several options for removing the leachate from the landfill. These options included: 1. Horizontal wells vs. vertical wells 2. Well design for collection of both leachate and landfill gas 3. Electric pumps vs. pneumatic pumps 4. Optimum spacing and location of vertical wells 5. Collection and perimeter manifold piping orientation The system has been operational since October, 2005. The lessons learned during the design, construction and operation of the system will be beneficial to a large number of landfill professionals and managers who have leachate management issues. This project has also spurred a landfill gas utilization project due to the amount of landfill gas collected by the newly constructed system.
机译：为了应对苏福尔斯地区卫生垃圾填埋场中的高渗滤液水平，RW贝克与苏福尔斯市合作，在苏福尔斯市无衬砌的100英亩区域设计了一种双相渗滤液和垃圾填埋气提取系统。垃圾填埋场，位于南达科他州苏福尔斯以西约6英里处。这个耗资110万美元的系统包括19个（最终约100个）垂直渗滤液和垃圾填埋气抽采井，连接支管和集管，沥滤液排污口和提升站以对垃圾填埋场进行脱水。从历史上看，为了满足法规要求的封闭要求并允许垃圾填埋气的收集和回收，需要抽取高渗滤液水平（最高达垃圾填埋场底部60英尺）。 R. W. Beck设计了一种独特的提取系统，该系统利用了单井套管和排水系统，将气体和液体的回收结合在一起。在每个井中都安装了气动渗滤液泵，将渗滤液排放到周边的垃圾填埋气总管，在那里，渗滤液和冷凝物在六个不同的提升站被分离出来。rn在设计该系统时，RW Beck评估了几种从垃圾填埋场去除渗滤液的方案。 。这些选项包括：1.水平井与垂直井2.收集渗滤液和垃圾填埋气的井设计3.电动泵与气动泵的对比4.垂直井的最佳间距和位置5.收集和周边歧管的布置该系统自2005年10月开始投入使用。在系统设计，建造和运行过程中所汲取的经验教训将对大量存在渗滤液管理问题的垃圾填埋场专业人员和管理人员有所帮助。由于新建系统收集的垃圾填埋气数量众多，该项目还刺激了垃圾填埋气利用项目。

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