A method for preventing the focusing phenomenon of electrokinetic restoration of soil and groundwater

A groundwater electrokinetic and phenomenon technology, applied in the restoration of polluted soil, magnetic field/electric field water/sewage treatment, etc., can solve problems such as soil conductivity increase
CN102259111AInactive Publication Date: 2011-11-30CHONGQING UNIV
5 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2011-11-30
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention proposes a set of methods for preventing the occurrence of the focusing phenomenon based on the trapping effect of the ion-induced voltage trap that leads to the focusing phenomenon during the electric restoration process of the polluted soil and groundwater, including 2 types and 5 methods in total. The first type of method is to prevent the occurrence of focusing phenomenon in the electrokinetic restoration process through a reasonable layout of the electrodes. There are three methods, namely: (1) make the direction of the electric field perpendicular to the direction of the soil conductivity gradient; (2) place the high conductivity area Upstream of the migration direction of the target ions; (3) Restoring the site according to the difference in soil conductance. The second type of method is to prevent the occurrence of focusing phenomenon in the soil near the electrode by reasonably controlling the concentration of the electrode working solution. There are two methods, namely: (1) use low concentration electrode working solution; (2) use clean surface water , drinking water or local groundwater to dissolve the electrolyte in the soil around the electrode pool to make electrode working solution. The above methods can be used in combination according to the site conditions.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method how to prevent or weaken the occurrence of focusing phenomenon in the electric restoration process of polluted soil and groundwater. Background technique

[0002] When the waste water and solid waste generated in the industrial production process enter the soil, it will lead to soil and groundwater pollution. When the site is converted into residential, agricultural and other land, the soil and groundwater must be restored to eliminate the pollutants.

[0003] The main methods of soil and groundwater restoration are: (1) physical restoration: physical separation restoration, solidification / stabilization restoration, steam extraction restoration, electric restoration, etc.; (2) chemical restoration: chemical leaching restoration, solvent extraction restoration, High-temperature incineration restoration, redox restoration, etc.; (3) Bioremediation: prepared bed method, soil composting method, mud bioreactor method, land ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More