Automated Soil Purification via Groundwater Concentration Feedback
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Solution Overview
Problem
Existing contaminated soil purification methods require manual operation to check and regulate the addition of oil decomposition accelerators, which is labor-intensive and inefficient.
Innovation Solution
A method that automates the injection of a purification agent or activator into contaminated soil, measuring its concentration in groundwater, and adjusting the addition amount or pumping rate based on measured concentrations, using a management function to predict and correct concentrations and temperatures for efficient purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to check and regulate the addition of oil decomposition accelerator, then the purification process can be performed with simple equipment, but the operation requires significant manpower and time
Solution Approach 1:
The system enables self-service operation through automatic control. The concentration detection device continuously monitors the purification agent concentration in groundwater, and the control device automatically adjusts the injection pump and aeration device based on detected values, eliminating the need for manual checking and regulation while maintaining optimal purification conditions
Solution Approach 2:
The system implements closed-loop feedback control. The concentration detection device provides real-time feedback on purification agent concentration to the control device, which then adjusts injection and aeration parameters accordingly. This automatic feedback mechanism replaces manual operation and significantly improves purification productivity
2Device complexity
If the concentration of purification agent is not regulated timely, then the operation process is simpler, but the purification efficiency decreases and resource utilization is poor
Solution Approach 1:
The concentration detection device continuously monitors purification agent concentration in groundwater and provides real-time feedback to the control device. This enables timely detection of concentration changes and automatic adjustment of injection and aeration parameters, ensuring accurate concentration regulation without requiring complex manual control procedures
Solution Approach 2:
The system replaces manual mechanical operation with automated electronic control. The control device uses electronic signals to automatically adjust the injection pump and aeration device based on concentration detection data, eliminating the need for manual intervention while improving regulation accuracy and reliability
3Productivity
If automatic control is implemented based on concentration measurement, then the productivity and efficiency are improved, but the device complexity increases
Solution Approach 1:
The system achieves self-service operation through integrated automatic control. The control device automatically adjusts injection and aeration parameters based on concentration detection data without requiring complex external control systems or manual intervention, improving productivity while keeping the automation architecture relatively simple
Solution Approach 2:
The control device performs multiple functions: it controls the injection pump, aeration device, and concentration detection device simultaneously. This multi-functionality reduces the need for separate control systems for each component, improving productivity while minimizing overall system 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
Enables efficient and systematic purification of contaminated soil with reduced manpower by automating the process, ensuring timely regulation of the purification agent concentration and temperature, thereby improving prediction accuracy and resource utilization.
Implementation Method 1
an injection liquid containing a purification agent to decompose a contaminant or an activator to stimulate biological decomposition by the purification agent
Implementation Method 2
a process of measuring a concentration of the purification agent or the activator in groundwater in an observation well or in a pumping well
Implementation Method 3
The injected liquid permeates the contaminated soil and is pumped up from a water-collection well
Data Source
AI summary
A contaminated soil purification system for decomposing a contaminant in contaminated soil E. The contaminated soil purification system includes: injecting, into contaminated soil through a water injection well, an injection liquid containing a purification agent to decompose a contaminant or an activator to stimulate biological decomposition by the purification agent; a process of measuring a concentration of the purification agent or the activator in groundwater in an observation well or in a pumping well, the observation well or the pumping well being provided at a location spaced apart from the water injection well; and a process of, based on the concentration that has been measured, automatically controlling an addition amount of the purification agent or the activator to the injection liquid or automatically controlling a pumping amount of water from the pumping well.