| 摘要 |
PROBLEM TO BE SOLVED: To provide a purification method of a contaminated ground capable of purification by biologically treating effectively by microorganism, an easily decomposable substance generated by reacting a pollutant existing in a contaminated region in the ground with ozone.SOLUTION: A method includes: an ozone injection step for injecting at least one of ozone-containing gas containing ozone as a composition gas and ozone water formed by mixing the ozone-containing gas into water, into a contaminated region Q in the contaminated ground M through a first drilling pipe 7; and a microorganism-mixed water injection step for injecting microorganism-mixed water formed by mixing a large quantity of microorganism into water, into the furthermore downstream side than the contaminated region Q in view of a groundwater flow passage through which groundwater flows in the ground M, through a second drilling pipe 29. |
