Title:
ORIGINAL POSITION PURIFYING METHOD FOR OIL CONTAMINATED SOIL
Document Type and Number:
Japanese Patent JP2023030770
Kind Code:
A
Abstract:
To provide an original position purifying method for oil contaminated soil having a high cleaning effect relative to prior one.SOLUTION: An original position purifying method comprises: an injection step for injecting washing water including a surfactant to oil contaminated soil; a step for leaving at rest, the oil contaminated soil for a sufficient time, for penetrating the washing water to the oil contaminated soil; and a collecting step for, after the step for leaving at rest, collecting and pumping the oil peeled from the oil contaminated soil with the washing water. According to the invention, by providing the step for leaving at rest after the injection step, the surfactant can be penetrated to the oil contaminated soil, and as a result, namely, an effect of soaking before washing can be exhibited, and a washing effect of the oil contaminated soil can be enhanced relative to prior arts.SELECTED DRAWING: Figure 1
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Inventors:
HATA KOJI
Application Number:
JP2021136085A
Publication Date:
March 08, 2023
Filing Date:
August 24, 2021
Export Citation:
Assignee:
HAZAMA ANDO CORP
International Classes:
B09C1/02
Attorney, Agent or Firm:
Sato Eto
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