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In-situ bioremediation preparation and remediation method for heavy metal contaminated soil

A technology of in-situ restoration of polluted soil, applied in the field of soil restoration, can solve the problems of easily damaged farmland soil micro-ecology, secondary chemical reagent pollution, heavy metal pollution, etc., to solve serious threats to food safety and quickly restore farming capacity , Improve the effect of micro-ecology

Inactive Publication Date: 2017-04-26
粮华生物科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the large amount and wide area of ​​heavy metal pollution in farmland soil, the removal method that needs to move the soil and the decomposition method that requires chemical reagents. In the restoration of heavy metal contaminated soil, the cost is high, and it is easy to damage the micro-ecology of the cultivated land soil, and it is easy to cause secondary damage to the cultivated land. To solve the problem of secondary chemical reagent pollution, the present invention proposes a preparation for in-situ remediation of heavy metal-contaminated soil and an in-situ bioremediation method for heavy metal-contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This example is used to illustrate the preparation for in-situ remediation of heavy metal-contaminated soil provided by the present invention, and the method for in-situ remediation of heavy metal-contaminated soil using the preparation.

[0053] The composition of the preparation for in-situ remediation of heavy metal-contaminated soil provided by this embodiment is as follows:

[0054] Aspergillus niger with the preservation number CGMCC No.11113, the content of which is 13 mg dry weight / mL;

[0055] Rhizomucor variabilis with preservation number CGMCC No.11114, with a content of 13 mg dry weight / mL;

[0056] Cunninghamellabertholletiae with the preservation number CGMCC No.11115, the content of which is 14 mg dry weight / mL;

[0057] Bacillus amyloliquefaciens (Bacillus amyloliquefaciens) with preservation number CGMCC No.10126, content of 10 15 a / mL;

[0058] The preservation number is Bacillus licheniformis (Bacillus licheniformis) of CGMCC No.10852, the content ...

Embodiment 2-16

[0065] This example is used to illustrate the preparation for in-situ remediation of heavy metal-contaminated soil provided by the present invention, and the method for in-situ remediation of heavy metal-contaminated soil using the preparation.

[0066] In the composition of the preparation that embodiment 2-16 provides for remediating heavy metal-contaminated soil in situ, except the content of the component in table 1-1 and 1-2, the content of all the other components (microbial growth promoter and fertilizer) Content is all identical with embodiment 1.

[0067] The preparation for in-situ remediation of heavy metal-contaminated soil provided by Example 2-16 is evenly applied to heavy metal-contaminated soil with a heavy metal content of 1g / kg soil, so that the content of fungi and bacteria in the soil reaches Table 2-1 Except the content shown in 2-2, the content of other components (microbial growth promoter and fertilizer) is all the same as in Example 1.

[0068] In Exa...

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Abstract

The invention relates to the field of soil remediation and discloses an in-situ bioremediation preparation for heavy metal contaminated soil. The preparation contains fungi and / or bacteria with heavy metal degrading abilities, the fungi refer to at least one of aspergillus niger, rhizomucor variabilis and grey cunninghamella, and the bacteria refer to at least one of bacillus amyloliquefaciens, bacillus licheniformis and bacillus simplex. By using the preparation for in-situ bioremediation of the heavy metal contaminated soil, the problems that the soil needs to move by using a moving method and secondary chemical agent pollution of the cultivated land is easily caused by using a decomposition method can be overcome, at the same time, residual heavy metals in the soil obtained after catabolism through the fungi and / or bacteria can also be fully used, the problem that high residual heavy metals in the soil seriously endanger food safety is solved, the soil micro-ecology is improved, the cultivated ability of soil is more quickly recovered, and the method is relatively low in cost and has broad application prospects.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to an in-situ bioremediation preparation and a remediation method for heavy metal polluted soil. Background technique [0002] At present, the situation of soil pollution in my country is very serious. The "National Soil Pollution Survey Bulletin" released in April 2014 shows that the rate of soil cadmium exceeding the standard has reached more than 7.0%. Therefore, remediation of heavy metal-contaminated soil is one of the major research topics related to the sustainable development of agriculture and the survival and health of the people in our country. [0003] Heavy metal contaminated soil remediation techniques can be divided into three categories: removal method, decomposition method and passivation method. The removal method is to remove the soil from the heavy metal-contaminated site and backfill it after corresponding repairs in situ. The decomposition method is to use che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/42B09C1/10C09K101/00
CPCC09K17/42B09C1/105C09K2101/00
Inventor 林森徐粲然任立伟过钰梁
Owner 粮华生物科技(北京)有限公司
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