Title:
METHOD FOR REPAIRING HEAVY METAL ORGANIC COMPOSITE CONTAMINATED SOIL BY MEANS OF COMBINATION OF ELECTRIC-AERATION-LIQUID INJECTION
Document Type and Number:
WIPO Patent Application WO/2022/116495
Kind Code:
A1
Abstract:
A method for repairing heavy metal organic composite contaminated soil by means of a combination of electric-aeration-liquid injection, which belongs to the field of contaminated soil repairment. In the method, an electric repairing method is combined with an aeration method, and the repairing effect is enhanced by means of bottom liquid injection. The combined repairing method is carried out from the bottom to the top, and water in a soil body is moved from the bottom to the top by means of an electric repairing method to drive heavy metals and organic substances towards the top to be enriched; and bubbles generated by an aeration method are diffused from the bottom to the top to drive the volatile organic substances to be moved towards the top of the soil body, and a centralized collection treatment is carried out on the top, the gas-liquid mass transfer rate is high, and the repairing effect is good. An electrolyte is intermittently injected at the bottom by means of a liquid injection method, which repairs the contaminated soil body from the bottom to the top by moving under the action of an electric repairing flow, while maintaining the pH stability of the soil body. The electric repairing method, aeration method and liquid injection process are completed simultaneously with a designed double-channel porous EKG electrode, which is efficient and convenient.
Inventors:
XIE XINYU (CN)
GE SHANGQI (CN)
ZHENG LINGWEI (CN)
ZHANG XUNLI (CN)
WANG YUNCHAO (CN)
LIU CHUNYANG (CN)
SUN MINYANG (CN)
DAI PUXIU (CN)
ZHANG KANG (CN)
GE SHANGQI (CN)
ZHENG LINGWEI (CN)
ZHANG XUNLI (CN)
WANG YUNCHAO (CN)
LIU CHUNYANG (CN)
SUN MINYANG (CN)
DAI PUXIU (CN)
ZHANG KANG (CN)
Application Number:
PCT/CN2021/097041
Publication Date:
June 09, 2022
Filing Date:
May 29, 2021
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
B09C1/00; B09C1/08; B09C1/02
Domestic Patent References:
| WO2011109342A1 | 2011-09-09 |
Foreign References:
| CN112642854A | 2021-04-13 | |||
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| CN111360060A | 2020-07-03 | |||
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| CN102513348A | 2012-06-27 | |||
| CN105312314A | 2016-02-10 | |||
| CN206153285U | 2017-05-10 | |||
| CN103316909A | 2013-09-25 | |||
| CN106881339A | 2017-06-23 | |||
| CN108213070A | 2018-06-29 | |||
| CN205362215U | 2016-07-06 | |||
| US20160052030A1 | 2016-02-25 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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