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Using method of test device for electrodynamic remediation of contaminated soil

A test device and a technology of polluted soil, which is applied in the field of soil remediation, can solve the problems of unformed electrodynamic remediation of polluted soil technology, cumbersome instrument assembly, poor applicability, etc., and achieve the effects of no leakage risk, multiple functions, and improved efficiency

Active Publication Date: 2022-04-22
TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the development direction of electrokinetic remediation technology for contaminated soil involves the development of high-performance electrodes, the application of ion exchange membranes, the change of power supply mode, the use of auxiliary agents, the change of electric field distribution (such as anode approximation method), and the combination of other methods (such as EK-PRB The main factors restricting the development of electrodynamic remediation technology are electrode corrosion, electrode polarization, soil acidity and alkalinity, etc. Due to the complexity of soil properties and pollutant diversity, electrodynamic remediation of polluted soil technology has not yet formed a system It is necessary to carry out in-depth research and development on the repair plan; the electric repair test device is an indispensable tool for the electric power repair test, but the existing electric power repair test device has many problems, such as single function, cumbersome instrument assembly, applicable Poor sex, low security, etc.

Method used

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  • Using method of test device for electrodynamic remediation of contaminated soil
  • Using method of test device for electrodynamic remediation of contaminated soil
  • Using method of test device for electrodynamic remediation of contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as Figure 1-Figure 3 As shown, a test device for electrodynamic remediation of contaminated soil includes a soil tank 1, a cathode pool system, an anode pool system, a DC power supply 9, a DC ammeter 16, a DC voltmeter 17, and the like.

[0064] The soil tank 1 is a cuboid hollow tank without a top surface, made of plexiglass, and the cathode pool system and the anode pool system are symmetrically arranged on both sides of the soil tank 1 . Specifically:

[0065] The cathode tank system is arranged on the left side of the soil tank 1, and the cathode tank system includes a cathode tank tank 2, a cathode tank cover 3, and a cathodic electrode liquid storage tank 7; wherein, the cathode tank tank 2 is arranged in the soil tank 1, And be positioned at the left side of the length direction of soil tank 1, cathode pool tank 2 comprises a tank body surrounded by bottom surface, front and rear sides and left side, i.e. the top surface and the right side opening of tank ...

Embodiment 2

[0078] The method of using the test device for electrodynamic restoration of polluted soil to carry out the ion exchange membrane test specifically includes the following steps:

[0079] (1) Preparation of test materials: according to the needs of the test, prepare the contaminated soil and electrode solution for the test in a certain proportion;

[0080] (2) Assembling the test device: install the ion exchange membrane to be tested in the cathode tank 2 and the anode tank 4 (install the sealing gasket, the ion exchange membrane to be tested, and the spacer on the fixed frame bar with fastening bolts ), then the cathode pool tank 2 and the anode pool tank 4 are placed on the two ends of the soil tank 1, the prepared test soil is filled in the soil tank 1, and the cathode pool cover 3 is installed on the top of the cathode pool tank 2, and the anode pool The cover 5 is installed on the top of the anode pool tank 4, then the cathode pool cover 3 and the cathode pool tank 2 are f...

Embodiment 3

[0085] The method for carrying out the anode proximity test using the test device for electrodynamic restoration of polluted soil specifically includes the following steps:

[0086] (1) Preparation of test materials: according to the needs of the test, prepare the contaminated soil and electrode solution for the test in a certain proportion;

[0087] (2) Assembling the test device: place the cathode cell 2 and the anode cell 4 at both ends of the soil cell 1, fill the prepared test soil in the soil cell 1, and install the cathode cell cover 3 on the cathode cell 2 At the top, the anode cell cover 5 is installed on the top of the anode cell tank 4, then the cathode cell cover 3 and the cathode cell tank 2 are fixed to the soil tank 1 with the fixing clip 24, and the anode cell cover 5 and the anode cell tank are fixed with another fixing clip 24 4 is fixed with the soil tank 1; the water injection hose 7.1 of the catholyte storage tank 7 is connected with the first water inject...

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Abstract

The invention discloses a use method of a test device for electrodynamic remediation of contaminated soil. The test device comprises a soil tank, a cathode pool system, an anode pool system, a direct-current power supply, a direct-current ammeter and a direct-current voltmeter, the cathode pool system comprises a cathode pool tank, a cathode pool cover and a cathode electrode liquid storage tank, the anode pool system comprises an anode pool tank, an anode pool cover and an anode electrode liquid storage tank, the cathode pool tank and the anode pool tank are symmetrically arranged in the soil tank, and the cathode pool tank and the cathode electrode liquid storage tank are connected through a water injection and drainage pipeline; the anode tank and the anode electrode liquid storage tank are connected through a water injection and drainage pipeline; the cathode of the direct-current power supply is connected with the cathode electrode on the cathode pool cover through a wire, and the anode of the direct-current power supply is connected with the anode electrode on the anode pool cover through a wire; the device can be used for carrying out an ion exchange membrane test, an anode approximation test, an EK-PRB test, a power supply mode test and an electrode material screening test.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for using a test device for electrodynamic remediation of polluted soil. Background technique [0002] Electrokinetic remediation is a method of contaminated soil remediation. The basic principle is to apply a DC electric field to the polluted soil, so that the organic or inorganic pollutants in the soil will migrate directionally under the action of the DC electric field, enrich in the electrode area, and then be further removed. Electrodynamic remediation has the advantages of strong controllability, wide applicability, high economic benefits, environmental protection, and convenient post-treatment, and has a good application prospect in the field of soil remediation. However, in the application process of this technology, there are still many difficulties and key issues to be solved urgently, which has high application research value. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00G01N27/04G01N27/30B09C1/08
CPCG01N27/00G01N27/043G01N27/302B09C1/085
Inventor 刘凯袁方龙张文锋陈韬李云飞马悦杨太年
Owner TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG