Towards sustainable soil management - Reuse of excavated soils with natural contamination
Towards sustainable soil management - Reuse of excavated soils with natural contamination
复制标题
实现可持续土壤管理 - 挖掘出的带有自然污染的土壤的再利用
DOI：
10.1007/978-981-13-2221-1_5
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Takai Atsushi
中科院分区：
文献类型：
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作者：
Katsumi Takeshi;Inui Toru;Yasutaka Tetsuo;Takai Atsushi
介绍了日本关于自然污染挖掘土壤再利用的法规、实践和挑战的现状。近年来，在岩土工程和地质环境方面进行了努力，以促进采取具有成本效益的措施，在适当的污染物控制下重新使用这些挖掘的土壤。评价所关注土壤的淋溶行为以及周围地面的衰减能力对于设计具有成本效益的措施都是至关重要的。由于需要考虑自然污染性质的方法和/或协议，作者对不同类型的土壤和岩石进行了几次不同的浸出试验。一系列的实验工作表明，柱浸出试验的测试条件，如柱的长度和流速，应仔细决定模拟的情况下，土壤被重新利用在排水或其他岩土工程应用。无论是原来的地面或土壤层安装在自然污染的土壤下，预计将作为衰减层。因此，几种不同类型的土壤的衰减能力进行了讨论。本文还介绍了矿物添加剂对吸附性能的增强作用。
Status of regulations, practices, and challenges on the reuse of excavated soils with natural contaminations in Japan are presented. Geotechnical and geoenvironmental efforts have been conducted in recent years to contribute to the cost-effective measures to reuse such excavated soils under proper contaminant control. Evaluations of leaching behavior from the soils of concern as well as attenuation capacity of the surrounding ground are both essential to design the cost-effective measures. Since methods and/or protocols which consider the nature of natural contamination are required, several different leaching tests were performed on different types of soils and rocks with natural contaminations by the authors. A series of these experimental works revealed that the testing conditions of column leaching tests, such as column length and flow rate, should carefully be decided to simulate the situations where the soils are reused in embankments or other geotechnical applications. Either original grounds or soil layers installed beneath the naturally contaminated soils are expected to function as attenuation layer. Therefore, attenuation capacities of several different types of soils are discussed. Effects of mineral agents enhancing the sorption performance are also presented in this paper.