Accumulation of water and generation of leachate in a young landfill
Accumulation of water and generation of leachate in a young landfill
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DOI：
10.1016/s0022-1694(97)00080-2
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发表时间：
1997-12-31
影响因子：
6.4
通讯作者：
Akesson, M
中科院分区：
文献类型：
--
作者：
Bendz, D;Singh, VP;Akesson, M
对7年历史的中试填埋场进行了土壤覆盖层运行、积水和垃圾-渗滤液-布尔关系的调查。在土壤覆盖层的土壤湿度波动的顺序为120毫米。鉴于平均降水量为580毫米，净水输入到垃圾填埋场，分裂成存储和渗滤液排放，平均每年250毫米。在6.5年的时间里，成为渗滤液的部分从零增加到大约一半。在此期间，储存量增加约180 mm/m。固体废物样品中的水分含量和计算的储存量之间的公平协议进行了观察，一个1-2个月的时间滞后的净水输入渗滤液排放关系进行了观察。有人建议，所观察到的短渗滤液通量响应一段时间的渗透可能表明，很大一部分的水被保留的表面张力作为薄膜在受限的渠道，这是克服重力时，输入突然增加。的存储，渗滤液通量的关系进行了量化，并被认为是由一个家庭的曲线取决于存储和渗滤液通量的上升或下降。(C)1997年Elsevier Science B.V.
Seven-year-old pilot-scale landfills were investigated with respect to operation of the soil cover, accumulation of water and rainfall-leachate Bur relationship. The annual soil moisture fluctuation in the soil cover was of the order of 120 mm. Given an average precipitation of 580 mm, the net water input into the landfill, split into storage and leachate discharge, was on average 250 mm annually. The portion that becomes leachate increased from zero to about half during 6.5 years. The storage increase was about 180 mm/m during this period. Fair agreement between the calculated storage and the moisture content in solid waste samples was observed, A 1-2 month time lag in the net water input-leachate discharge relation was observed. It is suggested that the observed short leachate flux response to a period of infiltration may indicate that a large part of the water is retained by surface tension as thin films in restricted channels, which is overcome by gravity when the input is suddenly increased. The storage-leachate flux relationship was quantified and was found to consist of a family of curves depending on the storage and the rise or decline of leachate flux. (C) 1997 Elsevier Science B.V.