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Modified biochar soil remediation agent as well as preparation method and application thereof

A technology of soil remediation agent and biochar, which is applied in application, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of long treatment cycle, slow effect, heavy metal pollution, etc., to reduce the activity of heavy metals and increase the pH value , enhance the effect of adsorption capacity

Inactive Publication Date: 2021-04-02
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Heavy metal pollution is very harmful. Although the existing soil remediation agents can effectively treat it, the treatment cycle is long and the effect is slow.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a modified biochar soil restoration agent, comprising the following steps:

[0027] S1, take struvite, dry it at 65°C so that its moisture content is less than 1% of the mass, and pass it through a 80-mesh sieve;

[0028] S2, put 15kg of modified biochar into a mixer, add quantitative deionized water (15-20% of the mass of modified biochar), stir slowly, and add 15kg of dried struvite during the stirring process , 0.01㎏ Thiobacillus peach, 0.01㎏ Rhodopseudomonas capsulata, 6㎏ plant ash and 0.01㎏ compound enzyme preparation, the compound enzyme preparation consists of enzyme activity 4.9×10 5 U / g of aldehyde dehydrogenase, 17.2×10 5 U / g catalase, 9.3×10 5 U / g of nitroreductase and 10.6×10 5 Enone reductase composition of U / g;

[0029] S3, putting the mixture obtained after stirring into a granulator to prepare granules with a particle diameter of 4-6 mm and a length of 8-10 mm.

[0030] Here, the preparation method of modified biochar is:

...

Embodiment 2

[0036] A preparation method of a modified biochar soil restoration agent, comprising the following steps:

[0037] S1, take struvite, dry it at 65°C so that its moisture content is less than 1% of the mass, and pass it through a 80-mesh sieve;

[0038] S2, put 30kg of modified biochar into a blender, add quantitative deionized water (15-20% of the mass of modified biochar), stir slowly, and add 30kg of dried struvite during the stirring process , 0.05 kg of Thiobacillus peach, 0.05 kg of Rhodopseudomonas capsulata, 15 kg of plant ash and 0.05 kg of compound enzyme preparation, the compound enzyme preparation consists of enzyme activity 4.9 × 10 5 U / g of aldehyde dehydrogenase, 17.2×10 5 U / g catalase, 9.3×10 5 U / g of nitroreductase and 10.6×10 5 Enone reductase composition of U / g;

[0039] S3, putting the mixture obtained after stirring into a granulator to prepare granules with a particle diameter of 4-6 mm and a length of 8-10 mm.

[0040] Here, the preparation method of...

Embodiment 3

[0046] A preparation method of a modified biochar soil restoration agent, comprising the following steps:

[0047] S1, take struvite, dry it at 65°C so that its moisture content is less than 1% of the mass, and pass it through a 80-mesh sieve;

[0048] S2, put 18kg of modified biochar into a mixer, add quantitative deionized water (15-20% of the mass of modified biochar), stir slowly, and add 18kg of dried struvite during the stirring process , 0.02㎏ Thiobacillus peach, 0.02㎏ Rhodopseudomonas capsulata, 8㎏ plant ash and 0.02㎏ compound enzyme preparation, the compound enzyme preparation consists of enzyme activity 4.9×10 5 U / g of aldehyde dehydrogenase, 17.2×10 5 U / g catalase, 9.3×10 5 U / g of nitroreductase and 10.6×10 5 Enone reductase composition of U / g;

[0049] S3, putting the mixture obtained after stirring into a granulator to prepare granules with a particle diameter of 4-6 mm and a length of 8-10 mm.

[0050] Here, the preparation method of modified biochar is:

...

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Abstract

The invention discloses a modified biochar soil remediation agent as well as a preparation method and application thereof, and relates to the technical field of soil remediation. The modified biocharsoil remediation agent comprises the following components in parts by weight: 15-30 parts of struvite, 0.01-0.05 part of thiobacillus roseus, 0.01-0.05 part of rhodopseudomonas capsulatus, 6-15 partsof plant ash, 15-30 parts of modified biochar and 0.01-0.05 part of a compound enzyme preparation. The remediation agent has the beneficial effects that in the embodiment of the invention, struvite can improve the pH value of soil, passivate heavy metals and reduce the activity of the heavy metals, and the modified biochar can improve more adhesion area for microorganisms and enhance the adsorption capacity of the biochar, so that time is bought for the action of thiobacillus palustris and rhodopseudomonas capsulatus on the heavy metals, and finally, the heavy metal contaminated soil is rapidly and efficiently remediated.

Description

technical field [0001] The invention relates to a soil remediation agent, in particular to a modified biochar soil remediation agent and its preparation method and application. Background technique [0002] The development of soil remediation agents started earlier in foreign countries, and today, the research and development of related materials and supporting facilities have been perfected; while in China, it is still in its infancy, and most polluted sites are still facing the problem of no solution, or Ineffective and inefficient situation. Due to the association of some heavy metal elements and the similarity in geochemical behavior, most of the polluted sites formed during the process of high-intensity resource and energy utilization and pollutant discharge belong to the soil compounded by multiple heavy metal elements. Accompanied by the more prominent phenomenon of individual heavy metal pollution. There is a great market demand for soil remediation agents that are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 杨文弢杨利玉徐梦琪陈勇林
Owner GUIZHOU UNIV
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