Title:
CONTAMINATED SOIL CLEANING EQUIPMENT AND CONTAMINATED SOIL CLEANING METHOD
Document Type and Number:
Japanese Patent JP2023098294
Kind Code:
A
Abstract:
To provide compactified equipment for cleaning contaminated soil contaminated with heavy metals using iron powder and to speed up the cleaning process.SOLUTION: Contaminated soil cleaning equipment stirs and mixes contaminated slurry containing viscous soil contaminated with heavy metals and iron powder, and cleans the heavy metals in the viscous soil by making the iron powder adsorb the heavy metals to prepare cleaned slurry, and comprises an iron powder addition tank for adding the iron powder to the contaminated slurry, a continuous rapid agitation system for preparing iron powder-mixed slurry by allowing the iron powder-added contaminated slurry to pass through the system, and an iron powder separation system for separating the iron powder-mixed slurry into iron powder having adsorbed heavy metals and cleaned slurry. The continuous rapid agitation system is provided with a pipe for connecting the iron powder addition tank and the iron powder separation system and a rapid stirrer for continuous treatment which is connected to the pipe in line and stirs and mixes the contaminated slurry to which the passed iron powder has been added.SELECTED DRAWING: Figure 1
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Inventors:
TAKADA NAOYA
YAMAZAKI KEIZO
MIWA TORU
MIURA TOSHIHIKO
IDE KAZUTAKA
YAMAZAKI KEIZO
MIWA TORU
MIURA TOSHIHIKO
IDE KAZUTAKA
Application Number:
JP2021214965A
Publication Date:
July 10, 2023
Filing Date:
December 28, 2021
Export Citation:
Assignee:
OHBAYASHI CORP
International Classes:
C02F11/00; B01J20/02
Attorney, Agent or Firm:
Patent Attorney Corporation Isshiki International Patent Office
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