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1. WO2022003903 - SYSTEM AND METHOD FOR PROCESSING CLEANING OF CONTAMINATED SOIL

Publication Number WO/2022/003903
Publication Date 06.01.2022
International Application No. PCT/JP2020/026025
International Filing Date 02.07.2020
IPC
B03B 5/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
5Washing granular, powdered or lumpy materials; Wet separating
B03D 1/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
02Froth-flotation processes
B09C 1/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
CRECLAMATION OF CONTAMINATED SOIL
1Reclamation of contaminated soil
02Extraction using liquids, e.g. washing, leaching
B09C 1/04 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
CRECLAMATION OF CONTAMINATED SOIL
1Reclamation of contaminated soil
04Flotation
Applicants
  • 清水建設株式会社 SHIMIZU CORPORATION [JP]/[JP]
Inventors
  • 毛利 光男 MOURI Mitsuo
Agents
  • 松沼 泰史 MATSUNUMA Yasushi
  • 川渕 健一 KAWABUCHI Kenichi
  • 西澤 和純 NISHIZAWA Kazuyoshi
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SYSTEM AND METHOD FOR PROCESSING CLEANING OF CONTAMINATED SOIL
(FR) SYSTÈME ET PROCÉDÉ DE TRAITEMENT DE NETTOYAGE D'UN SOL CONTAMINÉ
(JA) 汚染土壌の洗浄処理システム及び洗浄処理方法
Abstract
(EN) 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.
(FR) La présente invention concerne un système (1) pour le traitement de nettoyage d'un sol contaminé, comprenant : un dispositif de classification (10) qui obtient du sable (S4) dans n'importe quelle plage de tailles de particules et de fines particules (S3) dans n'importe quelle taille de particules inférieures à partir du sol contaminé (S0) contenant un ou plusieurs polluants choisis parmi les dioxines et les pesticides ; un dispositif de nettoyage exfoliant (20) qui exfolie des particules contaminées contenant les polluants à partir de la surface du sable (S4) ; un dispositif de retrait (30) qui génère des bulles d'air en présence d'eau contenant un agent de flottation, fixe les particules contaminées exfoliées aux bulles pour former du fil dentaire (F1), et retire le fil dentaire (F1) pour obtenir une première bouillie (S6) contenant du sol purifié primaire ; et un dispositif de nettoyage à écoulement vers le haut (40) qui est fourni à un étage suivant le dispositif d'élimination (30) et qui fournit la première bouillie (S6) à l'eau s'écoulant vers le haut (W2) pour purifier le sol purifié primaire.
(JA) ダイオキシン類及び農薬から選ばれる1種以上の汚染物質を含む汚染土壌(S0)から任意の粒子径範囲の砂分(S4)と任意の粒子径未満の細粒子分(S3)とを得る分級装置(10)と、砂分(S4)の表面から前記汚染物質を含む汚染粒子を剥離する剥離洗浄装置(20)と、フローテーション薬剤を含む水の存在下で気泡を発生させ、前記の剥離した汚染粒子を前記気泡に付着させてフロス(F1)とし、フロス(F1)を除去して、一次浄化土壌を含む第一のスラリー(S6)を得る除去装置(30)と、除去装置(30)の後段に設けられ、第一のスラリー(S6)を上向流水(W2)中に供給して、前記一次浄化土壌を浄化する上向流洗浄装置(40)と、を有する、汚染土壌の洗浄処理システム(1)。
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