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Microbial agent and application in prospect of passivating heavy metals of soil

A technology of microbial agent and microbial composition, applied in the field of microbial composition, can solve problems such as insignificant improvement effect, limited soil/land adaptability, and reduced heavy metal content

Active Publication Date: 2015-04-29
宋彦耕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor is committed to the research of microbial soil improvement, and has obtained soil improvement technologies such as Chinese Patent No. 200910169275, and used 25 kinds of live microorganisms to obtain the Good treatment effect, wherein it is found that the heavy metal content in the plants planted on the soil polluted by heavy metals has a certain reduction effect; later, the inventor further researched and developed saline-alkali land improvement technologies such as Chinese Patent No. 201210441532, which reduced some bacteria In terms of the technology of the species, it provided a kind of improved bacterial agent for the original coastal saline-alkali land again, but no improvement effect on heavy metals was found.
However, the inventors have found that the soil / land adaptability of these previously developed microbial compositions / bacteria agents is limited, and the improvement effect on some saline-alkali lands (especially secondary saline-alkali lands) and sandy land is not significant, which affects the promotion effect

Method used

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  • Microbial agent and application in prospect of passivating heavy metals of soil
  • Microbial agent and application in prospect of passivating heavy metals of soil
  • Microbial agent and application in prospect of passivating heavy metals of soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The production of embodiment 1 microbial bacterial agent

[0050] The present embodiment uses the following strains to prepare microbial agents: (1) Acetobacter striatum ( Acetobacter aceti ), (2) Beauveria bassiana ( Beauveria bassiana ), (3) Azospirillum brasiliensis ( Azospirllum brasilense ), (4) Nocardia cellulosus (Nocardia cellulans ), (5) Bacillus jelly-like (Bacillus mucilaginosus) , (6) Metarhizium anisopliae ( Metarhizium anisopliae ), (7) Trichoderma chrysogreen (Trichoderma aureoviride) , (8) Spirulina platensis ( Arthrospira platensis ), (9) Cellulomonas leguminosa ( Cellulomonas fabia ), (10) Bacillus stearothermophilus ( Bacillus sterothermophilus ), (11) Lactobacillus casei ( Lactobacillus casei ), (12) Methanobacterium formici ( Methanobacterium formicium ), (13) Methanobacter ruminantum ( Methanobacterium ruminantium ), (14) Thiobacillus thiooxidans ( Thiobacillus thiooxidans ), (15) Thiobacillus ferrooxidans ( Thiobacillus f...

Embodiment 2

[0053] Example 2 Production of Improver

[0054] Take cow dung with a water content of 65% (weight ratio) (if the water content is insufficient, you can add water) and crushed rice bran with particles smaller than 5mm, mix them evenly at a mass ratio of 85:15, and make the mixed cow dung and rice bran There is no agglomeration above 40mm.

[0055] Then, the mixture of 1 ton of above-mentioned cow dung and rice bran is mixed with the microbial inoculant produced in 1kg of Example 1, and heaped into the fermenter to form a compost heap. During the compost heap placement period, along with the fermentation process, the compost heap can naturally heat up. This fermentation heating process usually takes 2-3 days, and the compost heap can be turned 1-2 times during this period. Then, when the temperature of the compost heap rises to 65°C, turn on the turner to turn the compost heap to dissipate the heat generated by fermentation to ensure that the temperature does not exceed 70°C; ...

Embodiment 3

[0057] Example 3 Improvement example of secondary saline-alkali land in Tianjin Binhai New Area

[0058] Our previous patented technology has achieved good results on the coastal saline-alkali land of Tianjin Binhai New Area, but the effect on the secondary saline-alkali land caused by the degradation of non-coastal originally cultivated land is not significant, and the survival rate of seedlings is not ideal. Therefore, we use the new research and development Improvement experiments were carried out on similar secondary saline-alkali land adjacent to unimproved land (and desertification has occurred).

[0059] The test started on April 5, 2012, and was applied by Tianjin TEDA Landscape Construction Co., Ltd. and Tianjin Haibin Avenue Construction and Development Co., Ltd. (no alien soil was applied during the period), that is, the improvement agent particles prepared in Example 2 were mixed into the surface 20cm of soil , the mixing amount is 5kg per square meter, and the rot...

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Abstract

The invention provides a microbial composition comprising acetobacter aceti, beauveria bassiana, azospirllum brasilense, nocardia cellulans, bacillus mucilaginosus, metarhizium anisopliae, trichoderma aureoviride and the like. The microbial composition can be stably combined in a microbial agent, is used for improving soil / land and especially can be used for effectively improving soil polluted by heavy metals.

Description

technical field [0001] The invention belongs to the technical field of microbial fermentation. Specifically, the invention relates to a microbial composition. Although the number of bacterial species is large, the bacterial agent produced by it is stable. The combination of these bacterial species can effectively improve secondary saline-alkali land and Sandy soil and other soils can also effectively improve the soil polluted by heavy metals. Background technique [0002] With the rapid development of global economy, especially the rapid development of industrial and mining industries, a large amount of pollutants containing heavy metals are discharged. 15 million tons and 1 million tons of Ni. These heavy metal pollutants enter the soil through various channels, causing serious soil pollution. Soil heavy metal pollution can affect the decline of crop yield and quality, cause serious damage to the ecosystem, and especially endanger human health through the food chain. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/18C12N1/14C09K17/00B09C1/10C12R1/02C12R1/365C12R1/07C12R1/885C12R1/245C12R1/10C12R1/12C12R1/065C12R1/41C12R1/69C12R1/865C12R1/825C12R1/845C12R1/645C12R1/01
CPCB09C1/105C09K17/00C09K2101/00C12N1/14C12N1/18C12N1/20
Inventor 宋彦耕
Owner 宋彦耕
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