In-Situ Sediment Remediation Device with Depth Determining Module
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Solution Overview
Problem
Current in-situ remediation technologies face challenges in accurately positioning devices to specific depths in sediment for stratified treatment, especially in water bodies with overlying water, due to inaccuracies in water depth measurement and sediment unevenness.
Innovation Solution
An in-situ electric stratified remediation device equipped with a depth determining module, which includes a telescopic rod, a porous cylinder, and a curing agent storage device, allows for accurate positioning by releasing a floating ball or indicator to mark the mud-water interface and adjusting the telescopic rod to specified depths, enabling stratified treatment without pre-measuring water depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If water depth measuring instruments are used to determine the depth for device insertion, then the device can be positioned in the sediment, but the measurement accuracy is affected by ship swinging, wave, water temperature, water quality, and instrument stability, resulting in an error of about ±10 cm
Solution Approach 1:
The patent introduces a depth determining module as an intermediary device that mechanically links the device position to the water surface through a rod extending vertically. This mechanical intermediary provides direct visual depth indication without relying on electronic water depth measuring instruments, thereby eliminating errors from ship swinging, waves, and instrument stability while maintaining simple operation
Solution Approach 2:
The depth determining module creates a physical copy or representation of the device's insertion depth through the rod that extends to the water surface. The rod's length and positioning provide a direct visual copy of the burial depth, eliminating the need for separate electronic measurement instruments and their associated errors
2Manufacturing precision
If the device is inserted to treat polluted sediment in zones and layers, then the treatment amount is reduced, but it is difficult to accurately position the device in a specified depth in the sediment, especially when the sediment is uneven or has benthic plants
Solution Approach 1:
The depth determining module allows operators to pre-determine the exact insertion depth before actual device deployment. The rod is marked with depth indicators that show the precise burial depth needed, enabling operators to insert the device to the correct depth in one action without complex adjustments, even on uneven sediment surfaces or among benthic plants
Solution Approach 2:
The depth determining module serves itself by providing automatic visual feedback on insertion depth through the rod extending to the water surface. The rod's position relative to the water surface automatically indicates whether the device is at the correct burial depth, eliminating the need for external measurement instruments or complex positioning procedures
3Reliability
If conventional in-situ cover and in-situ passivation technologies are used, then the spread of contaminants at the sludge-water interface is inhibited, but the contaminants cannot be completely removed and there is a risk of increasing the sediment deposition thickness
Solution Approach 1:
The patent replaces passive mechanical covering and passivation methods with active electrodynamic remediation. Electric field lines penetrate the sediment to mobilize and extract contaminants through electromigration and electroosmosis, completely removing pollutants rather than merely containing them, while the porous cylinder structure prevents sediment deposition thickness increase through controlled drainage
Solution Approach 2:
The patent employs a porous cylinder as the device structure that allows selective passage of contaminants and pore water while retaining sediment particles. The porous material enables complete contaminant removal through electrodynamic processes while preventing increased sediment deposition thickness by allowing controlled drainage and maintaining sediment structure
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
The device achieves accurate and efficient stratified treatment of sediment pollutants by simplifying the operation, enhancing applicability, and reducing costs, while avoiding the limitations of turbid water and pre-measurement errors.
Implementation Method 1
the positioning slide moves upwards to touch the switch button to release the floating ball
Implementation Method 2
the electric remediation technology assembles a EKG electrode plate with both water conductivity and conductivity into a specific device, as such, in-situ removal of pollutants in a drainage process can be realized
Data Source
AI summary
The present disclosure provides an in-situ electric stratified remediation device and method for accurate position in remediation depth in sediment. the device includes a telescopic rod, a porous cylinder, a water storage tank, a curing agent storage device, and a depth determining module. The water storage tank is configured to collect sediment pore water and contaminants converged along a surface groove of a columnar electrode; and the fixed determining module is configured to send an indication information in response to that the curing agent storage device is inserted below a mud-water interface, while triggering release of curing agent from a wall of the curing agent shroud.