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Title:
COMBINED TREATMENT METHOD FOR PETROLEUM CONTAMINATED SOIL
Document Type and Number:
WIPO Patent Application WO/2021/227361
Kind Code:
A1
Abstract:
A combined remediation treatment method for petroleum contaminated soil, comprising treatment steps of impurity removal pretreatment, photocatalytic pre-oxidation, step-by-step thermal desorption of petroleum-contaminated soil, and high-temperature oxidation. Oxidation pretreatment is performed under an illumination condition by taking iron-titanium composite metal oxide as a catalyst, so that some cross-linked structures in macromolecules of petroleum pollutant are broken and degraded; and then step-by-step pyrolysis treatment is performed to achieve a removal rate of 98.00% or more. The use of a combined technology of photocatalytic pre-oxidation and step-by-step pyrolysis remediation can achieve a relatively high petroleum hydrocarbon removal rate, and efficient harmless remediation of high-concentration petroleum contaminated soil, so that the remediated soil can be reused.

Inventors:
LIU DONG (CN)
GUO SHUHAI (CN)
ZHU WEI (CN)
WEN FUSHAN (CN)
SHI NAN (CN)
QIU YU (CN)
FENG XIAONING (CN)
WU BO (CN)
LI GANG (CN)
YIN CHANGLONG (CN)
YANG XIUJIE (CN)
KONG DEHUI (CN)
DAI HONGBO (CN)
LI MENGFEI (CN)
WANG SA (CN)
Application Number:
PCT/CN2020/121741
Publication Date:
November 18, 2021
Filing Date:
October 19, 2020
Export Citation:
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Assignee:
UNIV CHINA PETROLEUM (CN)
International Classes:
B09C1/00; B09C1/06; B09C1/08
Attorney, Agent or Firm:
QINGDAO GAOXIAO PATENT AGENCY(GENERAL PARTNERSHIP) et al. (CN)
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