The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Aug. 29, 2017
Takenaka Corporation, Osaka, JP;
Takenaka Civil Engineering & Construction Co., Ltd., Tokyo, JP;
Kaoru Inaba, Inzai, JP;
Yuji Yamazaki, Inzai, JP;
Takaaki Shimizu, Inzai, JP;
Nobuyasu Okuda, Inzai, JP;
Yasuhide Furukawa, Inzai, JP;
Tomohiro Nakashima, Inzai, JP;
Haruka Kiyotomo, Inzai, JP;
Kazuhiro Mukai, Inzai, JP;
Masafumi Funakawa, Tokyo, JP;
Ai Hasegawa, Tokyo, JP;
Keisuke Omura, Tokyo, JP;
Kota Tanabe, Tokyo, JP;
Abstract
A subsurface soil purification method including: warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well; warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, the decomposer microorganisms being infused in the activator liquid, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well, or warming a purification liquid for decomposing a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the purification liquid into the subsurface soil by injecting the purification liquid into an in-ground injection well. The subsurface soil purification method also includes forcing air into the injection well, and feeding the air into the subsurface soil from a position in the injection well that is lower than a position in the injection well for feed-in of the activator liquid or the purification liquid.