Solid microbial inoculum for remediating Cd in farmland soil

A microbial and farmland technology, applied in the field of agricultural soil remediation, can solve the problems of effect impact, weakening of Cd pollution immobilization, etc., and achieve the effect of convenient application

Inactive Publication Date: 2017-06-13
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] The development of microbial remediation bacteria agents used for soil Cd pollution is mostly based on multifunctional bacteria. Although it has a direct effect on improving the ecology of the entire microbial flora in the soil, due to the interaction between the various strains effect, which greatly weakens the immobilization effect of Cd pollution in soil, thus greatly affecting its effect

Method used

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  • Solid microbial inoculum for remediating Cd in farmland soil
  • Solid microbial inoculum for remediating Cd in farmland soil

Examples

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Embodiment 1

[0022] This embodiment includes the following steps:

[0023] 1) With the commercially available bacterial liquid of Curtobacterium luteum, Cupriavidus necator and Sphingomonas parapaucimobilis, the proportions are 15%, 10% and 75%, Physical mixing of Cd-immobilized complex flora and complex bacterial liquid was carried out manually.

[0024] 2) commercially available bacterium liquid with fibrosis fiber microbacteria (Cellulosimerbium cellulans), nitrogen-fixing bacteria (Azotobacter sp.), yeast (Saccharomyces sp.), streptomyces (Streptomyces sp.) and Pseudomonas sp. (Pseudomonas sp.), According to the ratio of 15%, 25%, 30%, 15% and 15%, the physical mixing of Cd effect strengthening auxiliary flora solid compound bacterial solution was carried out manually.

[0025] 3) Use Cd to immobilize the complex bacterial liquid and the Cd effect-enhanced auxiliary bacterial solid compound liquid to physically mix at a ratio of 1:1, stir evenly, and serve as the final bacterial liqui...

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Abstract

A solid microbial inoculum for remediating Cd in farmland soil, comprising: curtobacterium luteum, cupriavidus necator, sphingomonas parapaucimobilis, cellulosimicrobium cellulans, azotobacter sp., saccharomyces sp., streptomyces sp. and pseudomonas sp. Acetic acid solubility of Cd, Cu and Zn in soil that is remediated by the solid microbial inoculum disclosed by the invention can be decreased significantly.

Description

technical field [0001] The invention relates to a technology in the field of agricultural soil restoration, in particular to a microbial solidification bacterial agent for Cd treatment of farmland soil. Background technique [0002] With the massive development of mineral resources, the development of industrial production and the widespread use of various chemical products, pesticides and fertilizers, pollutants containing heavy metals enter the environment through various channels, causing soil, especially farmland soil, to be increasingly polluted by heavy metals. Cd pollution is the most serious. According to preliminary statistics, more than 22% of the farmland soils in the sampling range of the national large sample survey have a certain degree of Cd pollution. my country's cultivated land resources are relatively scarce, and it is obviously impossible to change the purpose of land use in some key Cd-polluted areas of farmland. The problems related to farmers' producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/16A01B79/00
CPCA01B79/00C09K17/16
Inventor 奥岩松李兴杰叶俊文张宗迪
Owner SHANGHAI JIAO TONG UNIV
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