Kadambala Ravi, Powell Jon, Singh Karamjit, Townsend Timothy G
SCS Engineers, Boca Raton, FL, USA.
Innovative Waste Consulting Services, LLC, Gainesville, FL, USA.
Waste Manag Res. 2016 Dec;34(12):1300-1306. doi: 10.1177/0734242X16659921. Epub 2016 Aug 1.
Vertical liquids addition systems have been used at municipal landfills as a leachate management method and to enhance biostabilization of waste. Drawbacks of these systems include a limitation on pressurized injection and the occurrence of seepage. A novel vertical well system that employed buried wells constructed below a lift of compacted waste was operated for 153 days at a landfill in Florida, USA. The system included 54 wells installed in six clusters of nine wells connected with a horizontally-oriented manifold system. A cumulative volume of 8430 m of leachate was added intermittently into the well clusters over the duration of the project with no incidence of surface seeps. Achievable average flow rates ranged from 9.3 × 10 m s to 14.2 × 10 m s, which was similar to or greater than flow rates achieved in a previous study using traditional vertical wells at the same landfill site. The results demonstrated that pressurized liquids addition in vertical wells at municipal solid waste landfills can be achieved while avoiding typical operational and maintenance issues associated with seeps.
垂直液体添加系统已被用于城市垃圾填埋场，作为一种渗滤液管理方法，并用于增强废物的生物稳定化。这些系统的缺点包括加压注入的限制和渗流的发生。一种新型的垂直井系统，采用在压实废物层下方建造的埋入式井，在美国佛罗里达州的一个垃圾填埋场运行了153天。该系统包括54口井，安装在六个由九口井组成的井群中，并与一个水平方向的集管系统相连。在项目期间，累计向井群间歇性添加了8430立方米的渗滤液，未出现地表渗漏情况。可实现的平均流速范围为9.3×10⁻⁵立方米/秒至14.2×10⁻⁵立方米/秒，这与之前在同一垃圾填埋场使用传统垂直井的研究中实现的流速相似或更高。结果表明，在城市固体废弃物填埋场的垂直井中进行加压液体添加是可以实现的，同时避免了与渗漏相关的典型操作和维护问题。
