Title:
IN-SITU REMEDIATION METHOD FOR ORGANOPHOSPHORUS PESTICIDE-CONTAMINATED SOIL
Document Type and Number:
WIPO Patent Application WO/2023/123431
Kind Code:
A1
Abstract:
The present invention relates to the technical field of soil remediation, and provides an in-situ remediation method for organophosphorus pesticide-contaminated soil. The method comprises: first injecting an alkaline remediation agent into a contaminated region in situ to perform an alkaline hydrolysis treatment on the contaminated region, and injecting an oxidizing agent in situ after alkaline hydrolysis to oxidize the contaminated region. According to the method, an alkaline remediation agent plays a role in promoting the alkaline hydrolysis of an organophosphorus pesticide in an early stage and carrying out alkali activation on the oxidizing agent in the later stage, and fully uses the effectiveness of the alkaline remediation agent at each stage. According to the remediation mode of first adding the alkaline remediation agent and then adding the oxidizing agent proposed in the present invention, the dosage of the oxidizing agent can be reduced, the residual amount of related inorganic salt in the remedied soil is reduced, and the degree to which the related inorganic salt corrodes a steel structure of a building is reduced. In addition, the present method is an in-situ remediation method, contaminated soil does not need to be excavated and transferred during the remediation process, and the problem of odor diffusion during the remediation process is ameliorated.
Inventors:
LI HONGXUAN (CN)
KANG SHAOGUO (CN)
ZHANG XIAOBIN (CN)
LIU PENG (CN)
QIN LI (CN)
KONG JIAOYAN (CN)
JI LONGJIE (CN)
YANG LEWEI (CN)
SUN JING (CN)
XU HESHUANG (CN)
SONG SHAOYU (CN)
GAO YUEKUN (CN)
KANG SHAOGUO (CN)
ZHANG XIAOBIN (CN)
LIU PENG (CN)
QIN LI (CN)
KONG JIAOYAN (CN)
JI LONGJIE (CN)
YANG LEWEI (CN)
SUN JING (CN)
XU HESHUANG (CN)
SONG SHAOYU (CN)
GAO YUEKUN (CN)
Application Number:
PCT/CN2021/143876
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
BCEG ENV REMEDIATION CO LTD (CN)
International Classes:
B09C1/08; B09C1/00
Foreign References:
| CN105478457A | 2016-04-13 | |||
| CN105964678A | 2016-09-28 | |||
| CN106799396A | 2017-06-06 | |||
| CN107159705A | 2017-09-15 | |||
| CN105964677A | 2016-09-28 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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