Electrochemical Membrane Device for Copper Complex Removal
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Solution Overview
Problem
Traditional methods for treating industrial wastewater with heavy metals are inefficient due to the need for separate oxidative decomplexation and reduction processes, which limits efficiency and shortens electrode service life due to contamination.
Innovation Solution
A device combining electrochemistry with membrane separation to induce a self-induced Fenton-like reaction for simultaneous decomplexation and removal of copper, using electrocatalytic anodes and a composite conductive microfiltration membrane to generate hydroxyl radicals and facilitate membrane separation, reducing electrode contamination and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electrochemical process is used for decomplexation and heavy metal removal, then decomplexation and reduction can be performed separately, but electrode contamination increases and service life decreases
Solution Approach 1:
The device divides the treatment process into two separate chambers: an anode chamber for oxidative decomplexation and a cathode chamber for heavy metal reduction. The membrane separates these chambers, preventing contamination of electrodes while maintaining functional separation. This segmentation allows each electrode to perform its specific function without exposure to pollutants from the other chamber.
Solution Approach 2:
A membrane acts as an intermediary between the anode and cathode chambers, allowing selective passage of substances while preventing direct contact between electrodes and contaminants. The membrane enables ion transport necessary for electrochemical reactions while blocking particulate matter and organic complexes that would otherwise contaminate the electrodes.
2Productivity
If separate two-staged processes are used for oxidative decomplexation and heavy metal reduction, then each process can be optimized, but overall treatment efficiency is limited
Solution Approach 1:
The device merges oxidative decomplexation and heavy metal reduction into a single integrated electrochemical cell with multiple electrodes. The anode chamber contains electrodes for oxidative decomplexation, while the cathode chamber contains electrodes for simultaneous heavy metal reduction. Both processes occur concurrently in one device, improving overall treatment efficiency while maintaining process optimization through separate chamber design.
3Loss of energy
If conventional electrochemical oxidation is used for decomplexation, then heavy metals can be removed, but energy consumption increases due to electrode contamination
Solution Approach 1:
By segmenting the electrochemical cell into separate anode and cathode chambers with a membrane, the system prevents contamination that would otherwise increase energy consumption. Each chamber maintains optimal conditions for its specific function, reducing energy losses associated with contaminated electrodes while preserving high decomplexation rates through efficient electrochemical reactions.
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
Achieves high efficiency in decomplexation and removal of copper complexes while extending electrode life by integrating electrochemical processes and membrane separation, balancing decomplexation rate and energy consumption, and protecting electrodes from contamination.
Implementation Method 1
two electrocatalytic anodes capable of generating hydroxyl radicals
Implementation Method 2
the oxidative decomplexation mainly depends on the anode
Implementation Method 3
electrochemistry coupled with membrane separation
Implementation Method 4
the heavy metal reduction mainly depends on the cathode
Data Source
AI summary
A device for decomplexation and enhanced removal of copper based on self-induced Fenton-like reaction constructed by electrochemistry coupled with membrane separation is disclosed. The device includes a reactor, two electrocatalytic anodes capable of generating hydroxyl radicals, an electrocatalytic cathode membrane assembly, a direct current power supply, an aeration system, an inlet pipe and an outlet pipe. The device of the present invention has a simple construction. Using this device to treat industrial wastewater containing copper complexes under specific conditions allows the decomplexation and the removal of the industrial wastewater containing the copper complexes to be simultaneously realized at a low consumption and a high efficiency. The coupling of electrochemistry with membrane separation can be achieved to protect the cathode from being contaminated by pollutants in the sewage and prolong the service life of the electrode.