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:
May. 11, 2021
Filed:
Aug. 29, 2017
Takenaka Corporation, Osaka, JP;
Tomohiro Nakashima, Inzai, JP;
Takaaki Shimizu, Inzai, JP;
Haruka Kiyotomo, Inzai, JP;
Yamato Shimizu, Inzai, JP;
Nobuyasu Okuda, Inzai, JP;
Yasuhide Furukawa, Inzai, JP;
Yuji Yamazaki, Inzai, JP;
Kazuhiro Mukai, Inzai, JP;
Kaoru Inaba, Inzai, JP;
Takenaka Corporation, Osaka, JP;
Abstract
A contaminated soil purification system for decomposing a contaminant in contaminated soil E. The contaminated soil purification system includes: injecting, into contaminated soil through a water injection well, an injection liquid containing a purification agent to decompose a contaminant or an activator to stimulate biological decomposition by the purification agent; a process of measuring a concentration of the purification agent or the activator in groundwater in an observation well or in a pumping well, the observation well or the pumping well being provided at a location spaced apart from the water injection well; and a process of, based on the concentration that has been measured, automatically controlling an addition amount of the purification agent or the activator to the injection liquid or automatically controlling a pumping amount of water from the pumping well.