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In-situ bioremediation preparation and remediation method of quinclorac-contaminated soil

A technology of quinclorac and contaminated soil, which is applied in the field of in-situ bioremediation preparations and remediation, which can solve problems such as light condition restrictions and secondary chemical reagent pollution, achieve low cost, solve serious threats to food safety, and quickly restore farming effect of ability

Active Publication Date: 2019-09-03
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 problem that the existing method for degrading quinclorac is easily limited by light conditions and easily causes secondary chemical reagent pollution to cultivated land in the restoration of quinclorac-contaminated soil, the present invention proposes a A preparation for in-situ remediation of quinclorac-contaminated soil and an in-situ bioremediation method for quinclorac-contaminated soil

Method used

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  • In-situ bioremediation preparation and remediation method of quinclorac-contaminated soil

Examples

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Embodiment 1

[0054] This example is used to illustrate the preparation for in-situ remediation of quinclorac-contaminated soil provided by the present invention, and the method for in-situ remediation of quinclorac-contaminated soil using the preparation.

[0055] The composition of the preparation for in-situ remediation of quinclorac-contaminated soil provided by this embodiment is as follows:

[0056] Aspergillus niger with the preservation number CGMCC No.11113, the content of which is 13 mg dry weight / mL;

[0057] Rhizomucor variabilis with preservation number CGMCC No.11114, with a content of 13 mg dry weight / mL;

[0058] Cunninghamellabertholletiae with the preservation number CGMCC No.11115, the content of which is 14 mg dry weight / mL;

[0059] Pseudomonas denitrificans with preservation number CGMCC No.10845, containing 10 15 a / mL;

[0060] The preservation number is Burkholderia sp. (Burkholderia sp.) of CGMCC No.10854, the content is 10 15 a / mL;

[0061] Serratia marcescens...

Embodiment 2-16

[0067]This example is used to illustrate the preparation for in-situ remediation of quinclorac-contaminated soil provided by the present invention, and the method for in-situ remediation of quinclorac-contaminated soil using the preparation.

[0068] In the composition that embodiment 2-16 is used to repair the preparation of quinclorac polluted soil in situ, except the content of the component in table 1-1 and 1-2, all the other components (microbial growth promoter and Fertilizer) content is all identical with embodiment 1.

[0069] The preparation for in-situ remediation of quinclorac-contaminated soil provided by Embodiment 2-16 is evenly applied to the soil polluted by quinclorac with a quinclorac content of 1g / kg soil, so that the soil removes fungi Except that the content of bacteria reached the content shown in Table 2-1 and 2-2, the content of other components (microbial growth promoter and fertilizer) was the same as in Example 1.

[0070] In Examples 2-16, the prep...

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Abstract

The present invention relates to the field of soil remediation, and discloses an in-situ remediation preparation for quinclorac contaminated soil, the in-situ remediation preparation for quinclorac contaminated soil comprises fungi and / or bacteria with quinclorac degrading capability; the fungi are at least one of Aspergillus niger, rhizomucor variabilis and cunninghamella bertholletiae, and the bacteria are at least one of Pseudomonas denitrificans, Burkholderia caribensis and Serratia marcescens. The in-situ remediation preparation is used for in-situ bioremediation of the quinclorac contaminated soil, the problems that photochemical degradation method is vulnerable to the restriction of light conditions and secondary chemical reagent pollution of farmlands is easy to cause are overcome, the fungi and / or the bacteria are fully used for decomposition metabolism of residual quinclorac in the soil, the problems that the highly residual quinclorac in the soil seriously endanger food safety can be overcome, the micro-ecology of the soil is improved, the farming ability of the soil is faster to recover, and the method is low 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 quinclorac-contaminated soil. Background technique [0002] Quinclorac (3,7-dichloro-8-quinoline carboxylic acid) is a highly selective hormonal herbicide developed by BASF, and is widely used in many rice-growing countries to control monocotyledonous and dicotyledonous hybrids. Grass, especially for the control of barnyardgrass in paddy fields has a good effect. However, due to the lack of sufficient understanding of the herbicidal properties of quinclorac, some users blindly applied and increased the dosage, resulting in a large amount of residues in the soil and causing phytotoxicity to the next crops. The teratogenic harm of quinclorac to tobacco is the most significant, and this problem mainly occurs in the tobacco-rice rotation areas in southern my country. For example, in Hunan Province in 2009 alone, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12N1/14B09C1/10C12R1/43C12R1/01C12R1/38C12R1/645C12R1/685
Inventor 任立伟齐丹林森王培红
Owner 粮华生物科技(北京)有限公司
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