Title:
SYSTEM AND METHOD FOR PROCESSING CLEANING OF CONTAMINATED SOIL
Document Type and Number:
WIPO Patent Application WO/2022/003903
Kind Code:
A1
Abstract:
This system (1) for processing cleaning of contaminated soil has: a classification device (10) that obtains sand (S4) in any particle size range and fine particle content (S3) in any lesser particle size from contaminated soil (S0) containing one or more pollutants selected from dioxins and pesticides; an exfoliating cleaning device (20) that exfoliates contaminated particles containing the pollutants from the surface of the sand (S4); a removal device (30) that generates air bubbles in the presence of water containing a flotation agent, attaches the exfoliated contaminated particles to the bubbles to form floss (F1), and removes the floss (F1) to obtain a first slurry (S6) containing primary purified soil; and an upward flow cleaning device (40) that is provided to a stage following the removal device (30) and that supplies the first slurry (S6) into upward-flowing water (W2) to purify the primary purified soil.
Inventors:
MOURI MITSUO (JP)
Application Number:
PCT/JP2020/026025
Publication Date:
January 06, 2022
Filing Date:
July 02, 2020
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD (JP)
International Classes:
B03D1/02; B03B5/00; B09C1/02; B09C1/04
Foreign References:
| JP2019150774A | 2019-09-12 | |||
| JP2007326073A | 2007-12-20 | |||
| JP2019181403A | 2019-10-24 | |||
| US20170333961A1 | 2017-11-23 | |||
| JP2002045840A | 2002-02-12 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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