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A method of using microorganisms to induce leakage and plugging in stockyards

A microbial and storage yard technology, applied in construction, infrastructure engineering, protection devices, etc., can solve the problems of difficult to reach deep leakage points, poor material permeability, difficult construction and other problems, achieve low construction cost, not easy to aging and decomposition, The effect of less potion consumption

Active Publication Date: 2021-01-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, HDPE needs to excavate the storage yard during the laying process, which is difficult to construct and high in operating costs; the materials used in the sealing technology of organic grouting materials have poor permeability, and it is difficult to reach deep leakage points, and there is a problem of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A leaking storage yard at a certain point, using microorganisms to induce the method for sealing the leakage of the storage yard, comprises the following steps:

[0039] S1. FeSO with a metal ion concentration of 2mol / L 4 solution, microbial growth components, and a concentration of 1×10 7 Desulfovibrio bacteria of cfu / ml are mixed evenly to obtain a solidified material; the microbial growth component is a microbial growth component containing electron donors and nutrient elements, and the electron donor is H 2 ; The ORP of the cured material is -110mv, and the pH is 7.0;

[0040] S2. Drill filling holes at the leakage point of the stockyard and its surroundings;

[0041] S3. Pour the curing material into the filling hole first, and then pour the silicate cementing agent 3 hours after the curing material is poured in; 24 hours after the cementing agent is poured, pour the supplementary material into the filling hole;

[0042] S4. Repeat step S3 once every 48 hours un...

Embodiment 2

[0045] A leaking storage yard at a certain point, using microorganisms to induce the method for sealing the leakage of the storage yard, comprises the following steps:

[0046] S1. FeSO with a metal ion concentration of 3mol / L 4 solution, microbial growth components, and a concentration of 1×10 6 The Desulfovibrio bacterium of cfu / ml is evenly mixed to obtain a solidified material; the microbial growth component is a microbial growth component containing electron donors and nutrient elements, and the electron donor is sodium lactate; the ORP of the solidified material is -120mv, and the pH is 7.2;

[0047] S2. Drill filling holes at the leakage point of the stockyard and its surroundings;

[0048] S3. Pour the solidified material into the filling hole first, and then pour the phosphate cement 6 hours after the solidified material is poured; 48 hours after the cement is poured, pour the supplementary material into the filling hole;

[0049] S4. Repeat step S3 once every 60 h...

Embodiment 3

[0052] A leaking storage yard at a certain point, using microorganisms to induce the method for sealing the leakage of the storage yard, comprises the following steps:

[0053] S1. FeSO with a metal ion concentration of 4mol / L 4 solution, microbial growth components, and a concentration of 1×10 7 Desulfovibrio bacteria of cfu / ml are mixed evenly to obtain a solidified material; the microbial growth component is a microbial growth component containing electron donors and nutrient elements, and the electron donor is molasses; the ORP of the solidified material is -130mv, and the pH is 7.5;

[0054]S2. Drill filling holes at the leakage point of the stockyard and its surroundings;

[0055] S3. Pour the solidified material into the filling hole first, and then pour the phosphate cement 9 hours after the solidified material is poured; 60 hours after the cement is poured, pour the supplementary material into the filling hole;

[0056] S4. Repeat step S3 once every 72 hours until ...

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Abstract

The invention discloses a method for using microorganisms to induce leakage and plugging of stockyards, which comprises the steps of preparing solidified materials, drilling holes and filling materials. The present invention utilizes sulfate-reducing bacteria to reduce sulfate under anaerobic conditions to generate S 2‑ It forms sulfide precipitation with metal ions, and hardens and crusts at the leakage point of the storage yard to form an anti-seepage layer, thereby effectively blocking the leakage of the storage yard. The material used in the present invention has good permeability, and can effectively block the deep seepage points; the present invention realizes in-situ blockage of the storage yard without excavation, and the construction cost is low; Ratio, stable properties, not easy to aging decomposition, has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a method for blocking seepage in stockyards by using microorganisms. Background technique [0002] A large amount of industrial solid waste is generated in industrial production processes such as mining and metal smelting, and most of the current treatment methods are stacking and disposal. During the construction of the storage yard, due to the lack of reasonable planning before construction, the lack of perfect supervision during construction, and the lack of maintenance after construction, leakage occurred in the storage yard during the storage process. Due to rainwater leaching and other effects, the heavy metals in it migrate to the environment, causing pollution to groundwater and soil, and endangering human health. [0003] In the prior art, the anti-seepage lining is often used to block solid waste. However, due to factors such as terrain restri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D31/00
CPCE02D31/006
Inventor 胡学伟陈曦田森林黄建洪李英杰赵群
Owner KUNMING UNIV OF SCI & TECH