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Storage yard protection method based on sulfate reducing bacteria and biomass

A biomass and sulphate technology, applied to the removal of solid waste, restoration of polluted soil, etc., can solve the problems of poor durability of adhesives, complex proportioning, and high demand for materials, and achieve short construction period and simple process flow , low-cost effect

Active Publication Date: 2021-11-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this invention is that there are many material requirements, the actual industrial application ratio is complex, and the durability of the adhesive is poor.

Method used

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  • Storage yard protection method based on sulfate reducing bacteria and biomass
  • Storage yard protection method based on sulfate reducing bacteria and biomass
  • Storage yard protection method based on sulfate reducing bacteria and biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The storage yard protection method based on sulfate-reducing bacteria and biomass includes the following steps:

[0046] S1, drying and crushing the straw to obtain straw granules;

[0047] S2. Measure the concentration of heavy metals in the storage yard 1, and determine the high pollution area, low pollution area and pollution depth of the storage yard;

[0048]S3. According to the pollution situation of the storage yard, densely arrange the points in the high-pollution area of ​​the storage yard with a spacing of 3m, and loosely arrange the points in the low-pollution area with a spacing of 30m and a diameter of 10cm for drilling holes;

[0049] S4. Inject the mixture 3 of sulfate-reducing bacteria and straw crumbs into the hole 2, the volume-to-mass ratio of sulfate-reducing bacteria and straw crumbs is 1L:1kg, and the bacterial concentration of sulfate-reducing bacteria is 1×10 4 ~1×10 8 cfu / ml;

[0050] Through field tests, the heavy metal content in the test f...

Embodiment 2

[0052] The storage yard protection method based on sulfate-reducing bacteria and biomass includes the following steps:

[0053] S1, the coconut shell is dried and crushed to obtain coconut shell granules;

[0054] S2. Measure the concentration of heavy metals in the storage yard 1, and determine the high pollution area, low pollution area and pollution depth of the storage yard;

[0055] S3. According to the pollution situation of the storage yard, densely arrange the points in the high-pollution area of ​​the storage yard with a spacing of 10m, and loosely arrange the points in the low-pollution area with a spacing of 100 points and a diameter of 25cm for drilling holes;

[0056] S4. Inject the mixture 3 of sulfate-reducing bacteria and coconut shell granules into the hole 2, the volume-to-mass ratio of sulfate-reducing bacteria and coconut shell granules is 1L:5kg, and the concentration of sulfate-reducing bacteria is 1×10 4 ~1×10 8 cfu / ml;

[0057] Through field tests, t...

Embodiment 3

[0059] The storage yard protection method based on sulfate-reducing bacteria and biomass includes the following steps:

[0060] S1, the leaves are dried and crushed to obtain leaf fragments;

[0061] S2. Measure the concentration of heavy metals in the storage yard 1, and determine the high pollution area, low pollution area and pollution depth of the storage yard;

[0062] S3. According to the pollution situation of the storage yard, densely arrange the points in the high-pollution area of ​​the storage yard with a spacing of 20m, and loosely arrange the points in the low-pollution area with a spacing of 200m and a diameter of 50cm for drilling holes;

[0063] S4. Inject the mixture 3 of sulfate-reducing bacteria and leaf fragments into the hole 2, the volume-to-mass ratio of sulfate-reducing bacteria and leaf fragments is 1L:5kg, and the bacterial concentration of sulfate-reducing bacteria is 1×10 4 ~1×10 8 cfu / ml;

[0064] Through field tests, the heavy metal content in ...

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Abstract

The invention discloses a storage yard protection method based on sulfate reducing bacteria and biomass. The storage yard protection method comprises the following steps that S1, biomass is aired and smashed to obtain biomass particles; S2, the heavy metal concentration of a storage yard is measured, and a high-pollution area, a low-pollution area and the pollution depth of the storage yard are determined; S3, points are distributed and holes are drilled in the storage yard according to the pollution condition of the storage yard; and S4, a mixture of sulfate reducing bacteria and biomass particles is injected into the holes. The scheme that sulfate reducing bacteria and biomass are mixed and injected through hole drilling is adopted, the biomass provides a carbon source and a growth carrier for microorganisms, the sulfate reducing bacteria convert sulfate radicals into sulfur ions, the sulfur ions react with heavy metal ions to form sulfide precipitates, heavy metal in tailings is stabilized, and a microbial diaphragm wall is formed; and the problem of tailing heavy metal leakage is solved. The tailings can be rapidly stabilized, and pollutant diffusion is prevented; and the method is simple in technological process, high in efficiency and short in construction period.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration, and in particular relates to a yard protection method based on sulfate-reducing bacteria and biomass. Background technique [0002] A large amount of tailings, smelting slag, and leaching slag will be produced in the process of mining, dressing and smelting. These tailings contain heavy metals such as Pb, Cd, and Cu. Due to changes in geological conditions, damage to the anti-seepage layer, and rainwater leaching, the tailings The migration of medium and heavy metals to the bottom and side will seriously threaten the safety of the surrounding ecological environment. [0003] At present, the anti-seepage measures of the storage yard mainly adopt the methods of physical disposal and chemical disposal. The physical treatment is mainly in-situ resistance control, and there are two typical processes, namely concrete cut-off wall and curtain grouting method. Although the anti-seepage e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00B09C1/08
CPCB09B3/00B09B5/00B09C1/08B09C2101/00
Inventor 胡学伟李颖田森林赵群黄建洪李英杰严长安
Owner KUNMING UNIV OF SCI & TECH
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