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Title:
METHOD FOR STABILIZING FLUORIDES AND ARSENIC IN SOIL
Document Type and Number:
WIPO Patent Application WO/2021/031515
Kind Code:
A1
Abstract:
A method for stabilizing fluorides and arsenic in soil, comprising: 1) adding a calcium-containing compound to soil contaminated by fluorides and arsenic, stirring evenly, and standing the mixture for curing; 2) adding an iron-containing compound to the mixture obtained in step 1), stirring evenly and standing the mixture for curing; and 3) adding water to the mixture obtained in step 2), optionally adding a pH regulator, adjusting the weight water content to 30-40%, and standing the mixture for curing. The method effectively restores contaminated soil.

Inventors:
DING ZHENYU (CN)
SUN NING (CN)
HAO ZHANDONG (CN)
XU NUCHAO (CN)
ZHANG ZONGWEN (CN)
HU HONGXIA (CN)
LIU FENGPING (CN)
ZHANG YANKUN (CN)
ZHOU XIN (CN)
YIN HUILIN (CN)
Application Number:
CN2020/070825
Publication Date:
February 25, 2021
Filing Date:
January 08, 2020
Export Citation:
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Assignee:
CHINESE ACADEMY OF ENV PLANNING (CN)
International Classes:
B09C1/08
Foreign References:
CN110560473A2019-12-13
CN109365514A2019-02-22
CN105215051A2016-01-06
CN109796984A2019-05-24
EP0055493A11982-07-07
EP2196092A12010-06-16
Attorney, Agent or Firm:
BEIJING HEREGO PATENT AGENT FIRM (CN)
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