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Title:
ENHANCED ANAEROBIC REMEDIATION REAGENT FOR CHROMIUM-CONTAMINATED SITE, PREPARATION METHOD, AND USAGE METHOD
Document Type and Number:
WIPO Patent Application WO/2022/056954
Kind Code:
A1
Abstract:
An enhanced anaerobic remediation reagent for a chromium-contaminated site, a preparation method, and a usage method. The enhanced anaerobic remediation reagent comprises: vegetable oil, an emulsifier, glycerin, lactate, lactate ester, vitamin B12, diammonium phosphate, and water. The preparation method comprises: adding an emulsifier and glycerin to part of water, and heating to dissolve same to form a solution A; adding lactate, lactate ester, vitamin B12, and diammonium phosphate to the remaining part of water, and mixing same to form a solution B; stirring vegetable oil, the solution A, and the solution B for emulsification, and standing for discharging. The usage method comprises: mixing 6%-10% by volume of an enhanced anaerobic remediation reagent with 90%-94% by volume of hydrogen-containing water, and then injecting same into the soil or groundwater. The remediation reagent is efficient, long in sustained release time, environmentally friendly, and easy in material acquisition.

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Inventors:
LI SHUCAI (CN)
WEI LI (CN)
FANG HUAXIANG (CN)
REN BEI (CN)
LI LAISHUN (CN)
TANG XIANJIN (CN)
CHEN YAOJUN (CN)
Application Number:
PCT/CN2020/118073
Publication Date:
March 24, 2022
Filing Date:
September 27, 2020
Export Citation:
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Assignee:
BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY INC (CN)
International Classes:
B09C1/08; C02F3/28; C09K17/40; C02F101/22; C02F103/06
Foreign References:
CN109534517A2019-03-29
CN110076188A2019-08-02
CN110305673A2019-10-08
CN103978028A2014-08-13
CN109365522A2019-02-22
JP2015013231A2015-01-22
Attorney, Agent or Firm:
BEIJING HUI & XIN IP LAW OFFICE (CN)
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