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Device and method for restoring chlorobenzene-type organism polluted soil and underground water

A technology for polluted soil and organic matter, which is applied in the restoration of polluted soil, the treatment of polluted groundwater/leachate, chemical instruments and methods, etc. It can solve the problems of immaturity, small scale of EK-PRB combined technology laboratory, etc. , to achieve the effect of simple operation, reducing economic costs and reducing demand

Active Publication Date: 2013-09-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on EK-PRB combination technology is still mainly in the laboratory scale and is not yet mature.

Method used

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  • Device and method for restoring chlorobenzene-type organism polluted soil and underground water
  • Device and method for restoring chlorobenzene-type organism polluted soil and underground water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Step 1: Making the Electric Powerplant

[0038] According to relevant research at home and abroad, the electrodynamic repair device is produced, including power supply, electrode chamber, and electrode.

[0039] Step 2: Prepare the soil sample

[0040] Take 0-20cm topsoil, after air-dried, pass through 0.25mm copper mesh sieve to remove gravel and plant residues. Prepare soil samples with a chlorobenzene concentration of 1000 mg / kg for use.

[0041] The third step: configure medicines

[0042] A mixed solution of sodium sulfate and sodium carbonate with a Na ion concentration of 0.025mol / L was configured as the electrode solution. The acid-base adjustment solutions are 5% HCl solution and 1% NaOH solution respectively.

[0043] Step 4: PRB Reaction Wall

[0044] The mass ratio of activated carbon and iron filings is 2:7 for the internal adsorption material of the PRB reaction wall, and the size of the reaction wall is 5cm×80cm (W×H).

[0045] Step Five: Assemble t...

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Abstract

The invention relates to a device and a method for restoring chlorobenzene-type organism polluted soil and underground water, which belong to the technical field of environmental protection. The device comprises a direct-current power supply, PRBs (permeable reactive barriers) and electrodes, wherein concentric circular electrodes are installed in a polluted field, electrodes are plugged into electrode chambers, and the PRBs are installed in the middle part between an anode and a cathode and on the part, which is a quarter away from the anode, between the anode and the cathode. Through the electrode region, chlorobenzene in soil or underground water is gathered in the PRB area and then is removed through the oxidization reduction effect of the PRBs. By virtue of the device and the method, electrode fluid can be automatically updated and recycled, so that the economic expense can be reduced; the labor demand can be reduced; the operation is simplified; pollutants in the polluted region can be completely treated; the restoring speed of soil can be enhanced. By virtue of the device and the method, the treatment effect of chlorobenzene-type organisms in soil and underground water can be greatly improved. By virtue of a pH probe and an automatic control device, the treatment process is more automated.

Description

technical field [0001] The invention relates to an EK-PRB (Electrokinetic-Permeable Reaction Barrier, electrokinetic-permeable reaction wall) restoration device and method for soil and groundwater polluted by chlorobenzene organic matter, belonging to the technical field of environmental protection. Background technique [0002] With the rapid development of global industrialization, pollutants such as harmful heavy metals and organic matter enter the soil through various channels, causing soil pollution. Soil pollution not only affects agriculture, but also pollutes the groundwater environment and affects human health. Therefore, soil remediation is a technology that needs to be developed urgently. Chlorobenzenes (CBs) have stable physical and chemical properties and are not easily hydrolyzed and biodegraded in soil. They are hydrophobic chlorinated organic pollutants that widely exist in the environment. Chlorobenzene organic substances can be irritating to human skin and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00C02F1/467C02F1/58
CPCB09C1/00B09C1/08C02F1/008C02F1/66C02F1/4696C02F1/4698C02F2101/36C02F2103/06C02F2201/4617C02F2201/4618C02F2209/005C02F2209/06B09C1/085C02F1/469
Inventor 何理张嘉琪孙士超李小萌卢宏玮
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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