Method for repairing uranium-cadmium combined polluted soil with microorganisms

A technology for microbial remediation and compound pollution, which is applied in the field of microbial remediation of uranium and cadmium compound polluted soil, and can solve problems such as lack of effective remediation measures

Pending Publication Date: 2020-01-24
SOUTHWEAT UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a micro

Method used

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  • Method for repairing uranium-cadmium combined polluted soil with microorganisms
  • Method for repairing uranium-cadmium combined polluted soil with microorganisms
  • Method for repairing uranium-cadmium combined polluted soil with microorganisms

Examples

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Embodiment 1

[0033] The suspensions of Bacillus subtilis, Citrobacter Werkmanand Gillen and Bacillus cereus were taken respectively. Bacillus subtilis (Bacillus subtilis), Citrobacter Werkman and Gillen (Citrobacter Werkman and Gillen) and Bacillus cereus (Bacillus cereus) are prepared in a ratio of 30%:30%:10% to form a composite bacterial agent.

[0034] Add the composite bacterial agent of configuration (the quality of composite bacterial agent is 3% of the quality of the uranium-cadmium composite contaminated soil to be treated) in the uranium-cadmium composite contaminated soil to be treated, fully mix, regularly water and keep the soil moist, get final product .

[0035] In order to verify the feasibility of this application, the laboratory verification is as follows.

[0036] 1. Test material

[0037] 1.1 Bacteria to be tested

[0038] The tested strains were derived from three strains preserved in the laboratory of Southwest University of Science and Technology, Bacillus subtili...

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Abstract

The invention discloses a method for repairing uranium-cadmium combined polluted soil with microorganisms, and aims to solve the problems that an existing heavy metal soil repairing method mainly aimsto repair soil polluted by a single heavy metal, and no effective repairing measure is provided for soil polluted by heavy metals cadmium and uranium at the same time. The method for repairing the uranium-cadmium combined polluted soil with microorganisms comprises the following steps: adopting a compound bacterial strain in repairing of the uranium-cadmium combined polluted soil, wherein the compound bacterial strain is formed by compounding bacillus subtilis, citrobacter and bacillus cereus. The three bacterial strains are compounded to obtain the microbial compound at a specific ratio, sothat the removal level of metal uranium and metal cadmium in soil can be greatly improved, and the microbial compound has a good removal effect. The method is simple to operate, good in removal effecton metallic uranium and metallic cadmium, high in removal rate and excellent in soil remediation effect.

Description

technical field [0001] The invention relates to the field of soil remediation, especially the field of uranium-cadmium composite polluted soil, and specifically relates to a method for microbial restoration of uranium-cadmium composite polluted soil. Background technique [0002] Soil is an important part of the ecosystem and the material basis for the survival of living things. However, the pollution of heavy metals to the soil will lead to a large reduction in grain production and cause serious economic losses. Among them, the heavy metal cadmium has high toxicity, high mobility and concealment of pollution, which poses great harm. As a radionuclide, uranium has both chemical pollution toxicity and radioactivity. It can be released into soil, sediment or groundwater through mining operations, leakage, etc., causing soil and groundwater pollution. [0003] Heavy metal pollutants mainly come from the vigorous development of mining, smelting, electroplating and leather indu...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 陈晓明韩梦薇戚鑫王丹商冉勾家磊卓弛夫敬路淮罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH
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