Auxiliary Electrode Field Intensity Compensation for Soil Remediation
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Solution Overview
Problem
The existing electrokinetic remediation methods for organic contaminated soil face inefficiencies due to the uniform electric field's inability to match the heterogeneous spatial distribution of pollutants, leading to varying pollutant removal efficiencies across different regions.
Innovation Solution
The method involves determining auxiliary electrode positions and polarities based on pollutant concentration to construct a non-uniform electric field, compensating for field intensity in high-concentration areas by adjusting the polarity and arrangement of auxiliary electrodes relative to matrix electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform electric field is applied through paired electrodes in electrokinetic remediation, then the electric field coverage is complete and simple to implement, but the removal efficiency varies spatially due to heterogeneous pollutant distribution
Solution Approach 1:
The patent applies local quality by introducing auxiliary electrodes specifically in high pollutant concentration regions to create locally enhanced electric fields. The auxiliary electrodes are positioned based on spatial distribution of pollutants, and their polarity is controlled to generate stronger electric field intensity in areas where pollutants are most concentrated, thereby achieving localized remediation optimization without requiring complete system redesign
Solution Approach 2:
The patent segments the electrode system into matrix electrodes that provide uniform baseline coverage and auxiliary electrodes that provide targeted local enhancement. This segmentation allows the system to maintain the simplicity of uniform field coverage while adding localized intensity where needed, resolving the contradiction between implementation simplicity and remediation effectiveness
2Productivity
If auxiliary electrodes are added to construct a non-uniform electric field, then the field intensity compensation in high pollutant concentration regions is achieved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining the layout positions of auxiliary electrodes based on the spatial distribution characteristics of pollutants before remediation begins. The polarity control rules are established in advance, which simplifies the operational complexity during actual remediation processes while maintaining the ability to provide targeted field enhancement
Solution Approach 2:
The patent changes the electric field parameters (intensity and polarity) dynamically by activating auxiliary electrodes only in high pollutant concentration regions and controlling their polarity relative to adjacent matrix electrodes. This parameter adjustment allows efficient remediation in critical areas while minimizing the overall system complexity by not requiring all electrodes to operate simultaneously at full complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the overall remediation efficiency by matching the electric field intensity with pollutant concentration, reducing spatial variability and improving the removal of organic contaminants in soil.
Implementation Method 1
a weak direct current is applied to form an electric field
Implementation Method 2
Under the combined action of electrochemical reactions and electrokinetic effects, organic pollutants in soil are effectively removed
Implementation Method 3
Under the combined action of electrochemical reactions and electrokinetic effects, organic pollutants in soil are effectively removed
Data Source
AI summary
Presented is an electric field intensity compensation method for constructing a non-uniform electric field through an auxiliary electrode, including steps of: in a matrix electrode unit, designing an auxiliary electrode arrangement position according to the spatial distribution of the pollutant concentration; designing the polarity of the auxiliary electrode according to the position relationship between the auxiliary electrode and matrix electrodes; and constructing a non-uniform electric field by the auxiliary electrode and the matrix electrodes to implement space compensation of the electric field intensity. In the present invention, a non-uniform electric field matching a pollutant concentration field is constructed by setting the space arrangement and polarity of the auxiliary electrodes on the basis of the matrix electrodes according to the spatial distribution of the pollutant concentration, the contradiction of consistency between the heterogeneity of the spatial distribution of the pollutants and the removal efficiency of the uniform electric field is solved, and the spatial difference of efficiency of electrokinetically remedying organic contaminated soil is avoided, thereby improving the overall space remediation efficiency of electrokinetic remediation.