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公开(公告)号:US11084075B2
公开(公告)日:2021-08-10
申请号:US16329735
申请日:2017-08-29
发明人: Yuji Yamazaki , Takaaki Shimizu , Nobuyasu Okuda , Yasuhide Furukawa , Tomohiro Nakashima , Haruka Kiyotomo , Kazuhiro Mukai , Kaoru Inaba , Koudai Mae , Masafumi Funakawa , Ai Hasegawa , Keisuke Omura , Kota Tanabe
摘要: A subsurface soil purification method includes a first process of injecting a cleaning liquid, that separates a contaminant in subsurface soil from the subsurface soil and that has been warmed to a higher temperature than a groundwater temperature, into an injection well provided in the ground, and a second process of pumping up groundwater containing the cleaning liquid, in which the contaminant separated from the subsurface soil has been dissolved, from a pumping well that is provided in the ground so as to be spaced apart from the injection well.