Method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism

A technology of combined restoration of contaminated soil, applied in the restoration of contaminated soil, etc., to achieve efficient repair of heavy metal pollution in soil, simple method, and the effect of increasing biomass

Inactive Publication Date: 2016-07-06
UNIVERSTAR SCI & TECH SHENZHEN
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Problems solved by technology

[0004] The purpose of the present invention is to provide a simple, economical, safe, chemical passivation-microbial combined method for repairing heavy metal contaminated soil that can repair cadmium-contaminated soil while improving soil fertility, aiming to solve the above-mentioned problems in the prior art

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  • Method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism
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  • Method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism

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[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] The embodiment of the present invention provides a method for combined chemical passivation-microorganism restoration of heavy metal-contaminated soil, specifically, adding a passivation agent and functional bacteria to the heavy metal-contaminated soil for joint restoration, wherein the functional bacteria are obtained from the The strains obtained from the screening of indigenous bacteria in heavy metal-polluted soils and have adsorption capacity and tolerance to heavy metals.

[0017] In the embodiment of the present invention, the heavy metal pollution includes but not limited to...

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Abstract

The invention provides a method for jointly restoring heavy metal contaminated soil through chemical passivation-microorganism. The method comprises the steps that the heavy metal contaminated soil is jointly restored by adding a passivator and functional bacteria into the heavy metal contaminated soil, and the functional bacteria are bacterial strains which are obtained by screening aboriginal bacteria of the heavy metal contaminated soil and have adsorption capacity and tolerance to heavy metal. The method of chemical passivation-microorganism joint restoring is simple, economical and safe, the heavy metal contaminated soil can be effectively restored, and the soil fertilizer efficiency can be improved while no new contaminator is introduced.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal-contaminated soil, and in particular relates to a method for combined chemical passivation-microorganism remediation of heavy metal-contaminated soil. Background technique [0002] In April 2014, my country announced the results of the national soil pollution survey for the first time: the national soil environment is generally not optimistic, soil pollution is serious in some areas, and the quality of cultivated land soil environment is worrying. The main pollutants are heavy metals such as cadmium and arsenic. Soil heavy metal pollution seriously affects the growth and development of plants, affects the yield and quality of crops, and further causes serious harm to humans and the environment through the amplification of the food chain, seriously threatening the national ecological security. Cadmium is a highly toxic substance that has teratogenic, carcinogenic, and mutagenic e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/10B09C2101/00
Inventor 王荣曹玉梅沈雷
Owner UNIVERSTAR SCI & TECH SHENZHEN
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