城市垃圾卫生填埋场防渗层的安全设计

Safety Design of Impervious Liner of Solid Waste Landfill

在综合考虑防渗层防渗性能、截污能力以及场址区环境容量3要素的基础上,以某填埋场为研究背景,通过土柱实验确定填埋场主要污染物之一Cl-在防渗层中运移的相关参数,并根据填埋场水文地质条件确定场址区地下水体的环境容量.研究表明防渗层上渗滤液水头对填埋场中污染物进入地下水环境的总量影响很大,最后对填埋场防渗层进行了设计.

The permeability and filtration capacity of liners and capacity of a landfill site are investigated to design safe impervious liners of solid waste landfill. The permeability of the main pollutant, Cl- , of a solid waste landfill is obtained with soil column test. The capacity of the landfill site is determined by taking geological and hydrogeological properties of the site. It is shown that the water head of leachate on the impervious layer affects greatly the total amount of pollutants infiltrating to underground water. A design of impervious layers for the solid landfill is presented as an example. 