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Simulation method for electrokinetic remediation of heavy metal contaminated soil

A technology of electrodynamic repair and simulation method, which is applied in the restoration of polluted soil, etc., and can solve the problems of less system current, voltage, soil moisture content, test environment temperature and humidity, real-time monitoring of cathode soil pH, and single test object. , to achieve the effect of not easy moisture, simple steps and complete functions

Inactive Publication Date: 2021-04-09
XIAN UNIV OF SCI & TECH
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Problems solved by technology

Electric remediation technology is an in-situ remediation technology, and it is one of the hot research technologies. However, the current research object of electric remediation technology for heavy metal-contaminated soil is single, and there is little research on system current, voltage, soil moisture content, and test environment temperature. Real-time monitoring of humidity and cathode soil pH

Method used

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  • Simulation method for electrokinetic remediation of heavy metal contaminated soil
  • Simulation method for electrokinetic remediation of heavy metal contaminated soil
  • Simulation method for electrokinetic remediation of heavy metal contaminated soil

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Embodiment Construction

[0045] Such as Figure 1 to Figure 4 A simulation method for electrokinetic remediation of heavy metal-contaminated soil is shown, including the following steps:

[0046] Step 1. Make soil samples: Use a dynamic triaxial instrument to make a cylindrical soil sample, divide the cylindrical soil sample into two semi-cylindrical soil samples along a generatrix of the cylindrical soil sample, and use a dynamic triaxial instrument to measure each The compressive stress and shear force of the semi-cylindrical soil sample, and the semi-cylindrical soil sample is vacuum preserved, and the semi-cylindrical soil sample is the test soil sample 15;

[0047] The diameter of the cylindrical soil sample made by the dynamic triaxial instrument is fixed, and the length of the cylindrical soil sample produced by the dynamic triaxial instrument is variable;

[0048] It should be noted that the purpose of using a dynamic triaxial instrument to make a cylindrical soil sample is to make the soil s...

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Abstract

The invention discloses a simulation method for electric restoration of heavy metal-contaminated soil, which comprises the steps of: 1. making soil samples; 2. constructing a simulation device for electric restoration of heavy metal-contaminated soil; 1. Loading voltage; 6. Data recording and storage; 7. Determining the metal content, compressive stress and shear force of the soil sample contaminated by heavy metals after electrodynamic repair; 8. Repeating steps 1 to 7 multiple times. The present invention can produce heavy metal-contaminated soil samples that meet the actual situation according to actual needs, and can monitor the soil moisture content, cathode soil pH, environmental temperature, humidity and air pressure changes, and soil current changes in the process of electrical restoration of heavy metal-contaminated soils in real time. Seeking the optimal soil moisture content and loading voltage for electrokinetic remediation of heavy metal contaminated soil provides a reliable basis to improve the efficiency of electrokinetic remediation of heavy metal soil.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal polluted soil, and in particular relates to an electric remediation simulation method of heavy metal polluted soil. Background technique [0002] In recent years, the importance of mine geological environment restoration and management has become increasingly prominent. Among them, phytoremediation technology is often used for heavy metal-contaminated soil in mines. Phytoremediation technology has a long cycle and poor effect, and heavy metals are not easily absorbed by plants efficiently, and they are still adsorbed in soil particles. A lot of land use is restricted. Electric remediation technology is an in-situ remediation technology, and it is one of the hot research technologies. However, the current research object of electric remediation technology for heavy metal-contaminated soil is single, and there is little research on system current, voltage, soil moisture content, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/085
Inventor 王念秦苏颜曦
Owner XIAN UNIV OF SCI & TECH
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