Title:
土壌地下水汚染域の推定方法
Document Type and Number:
Japanese Patent JP7423062
Kind Code:
B2
Abstract:
To address such a problem that, although the prior surface soil gas survey and analysis techniques such as a statutory screening survey can clearly represent pollution distribution being present at high concentration, the survey stops short of estimating a low-concentration peripheral border of the polluted area, a pollution flow, or a groundwater flow direction.SOLUTION: An estimation method of soil/groundwater polluted area includes: calculating a sum of presence concentrations of carbon atoms included in gaseous species derived from organic metabolism of underground microorganisms for every survey spot by surface soil gas survey and analysis to create an underground microorganism metabolic strength distribution map; extracting, besides maximum distribution regarded as a pollution puddle on the distribution map, a belt-like form where the maximum and minimum distributions associated with the pollution puddle are alternately continued; and simultaneously estimating the polluted area and groundwater flow direction representing a whole picture of the pollution including the peripheral border of the polluted area, pollution flow, etc. that can complement the statutory screening survey, etc.SELECTED DRAWING: Figure 6
Inventors:
Kenichiro Tanaka
Shingo Owari
Takeshi Hasegawa
Shingo Owari
Takeshi Hasegawa
Application Number:
JP2020090600A
Publication Date:
January 29, 2024
Filing Date:
May 25, 2020
Export Citation:
Assignee:
ECO Renaissance Entec Co., Ltd.
International Classes:
G01N33/00; G01N33/18; G01N33/24
Domestic Patent References:
| JP2017164731A | ||||
| JP2007327830A |
Foreign References:
| US20160327456 |
Other References:
エコルネサンス・エンテック,地盤汚染経路を推定可能な表層間隙ガス調査技術 有限会社エコルネサンス・エンテックの技術概要,環境省報道発表資料20190820, 添付資料1,日本,環境省,2019年08月20日,p1-2
Attorney, Agent or Firm:
Hideaki Suzuki