PURIFICATION METHOD OF CONTAMINATED GROUND

• Main Author: YAMAMOTO SUMIO
• Format: Patent
• Language: English; Japanese
• Published: 21.01.2021
• Subjects: DISPOSAL OF SOLID WASTE; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

To provide a purification method of a contaminated ground that is capable of effective gasification of underground VOCs and does not flood the underground and its surface.SOLUTION: A combustion gas formed by combustion of a combustible gas is supplied to underground M through a drilling pipe 3 penetrated in the underground M and via an open hole 3 drilled in a direction crossing with its longer direction. A gas existing in the underground M is vacuumed and recovered above the ground through a plurality of drilling pipes 5 penetrated in the underground M at a position apart from the drilling pipe 3 and surrounding the drilling pipe 3 and via the open hole 5a drilled in a direction crossing with its longer direction.SELECTED DRAWING: Figure 2 【課題】地中のＶＯＣｓを効果的に気化することができると共に地中および地表が水浸しになることがない汚染地盤の浄化方法を提供すること。【解決手段】地中Ｍに貫入された試錐管３にその長手方向と交差する方向に穿設された貫通孔３ａを介して、可燃性ガスを燃焼させた燃焼ガスを地中Ｍに供給する。試錐管３から離間した位置で、かつ、試錐管３を囲繞するように地中Ｍに貫入された複数の試錐管５にその長手方向と交差する方向に穿設された貫通孔５ａを介して、地中Ｍに存在する気体を吸引して地上に回収する。【選択図】図２