Method for restoring riverway water body by utilizing high-energy potential

Abstract

The invention relates to the technical field of water pollution treatment, in particular to a method for restoring a river water body by utilizing high-energy potential, which comprises the following steps: S1, generating an external electric field, and establishing an electrophoresis and electroosmotic flow field from outside to inside in the water body around a restoration unit to drive the water body and pollutants to migrate into the restoration unit; s2, performing in-cavity degradation, and performing decomposition treatment on the water body and pollutants migrated into the synergistic reaction cavity in the remediation unit through an oxidation process; s3, state sensing is carried out, the electrical impedance of the water body in the internal collaborative reaction cavity is measured in real time, and a real-time impedance value representing the pollutant treatment load in the cavity is obtained. According to the invention, the water body impedance of the internal reaction cavity is used as a real-time characterization parameter of the pollutant treatment load, and the capture rate of external pollutants and the degradation rate of internal pollutants are dynamically balanced, so that the remediation system can automatically adapt to the dynamic change of river water quality, and the operation stability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pollution treatment, and particularly relates to a method for repairing river water by using high-energy electric potential. BACKGROUND

[0002] Pollution of surface water bodies such as rivers and lakes is one of the serious environmental problems currently faced. In-situ remediation technology, which does not require water to be pumped out for treatment, has the advantages of lower cost and less disturbance, and has become a research focus in the field of water environment treatment. Among many in-situ remediation technologies, the combination of electrokinetic remediation technology for pollutant migration and enrichment and advanced oxidation technology for pollutant decomposition is a promising technology path.

[0003] Existing such collaborative remediation systems usually include an external electric field generation unit and an internal degradation unit. The external electric field generation unit establishes an electric field in the water body around the remediation device, and drives the water body and pollutants to migrate to the interior of the device through electrophoresis and electroosmotic flow effects; the internal degradation unit chemically or physicochemically decomposes the entering pollutants. However, the existing technology has the following limitations in actual application:

[0004] The operating parameters of the existing system, such as the strength of the external electric field and the processing power of the internal degradation unit, are usually set once according to historical water quality data or empirical values, and remain constant throughout the entire operating cycle. This open-loop control operation mode cannot adapt to the actual dynamic changes in the pollutant concentration of the river water body.

[0005] The water quality of a river is often affected by upstream pollution, tributary inflow, rainfall runoff and other factors, and the pollutant concentration presents irregular and continuous fluctuations. When the actual pollutant concentration is higher than the design value, the fixed pollutant capture rate and degradation rate will result in overload of the treatment load, incomplete degradation of pollutants, non-compliance of the effluent water quality of the system, and poor overall operation stability. SUMMARY

[0006] In order to make up for the above shortcomings, the present application provides a method for repairing river water by using high-energy electric potential, aiming at improving the defects of the prior art that uses a fixed open-loop control mode and cannot adapt to the dynamic changes in the pollutant concentration of the water body, resulting in unstable treatment effect.

[0007] In a first aspect, the present application provides the following technical solution: a method for repairing river water by using high-energy electric potential, comprising the following steps:

[0008] S1, generating an external electric field to establish an electrophoresis and electroosmotic flow field from outside to inside in the water body around the remediation unit, to drive the water body and pollutants to migrate to the interior of the remediation unit;

[0009] S2, performing intracavity degradation, migrating into the repair unit inside the internal collaborative reaction cavity of water and pollutants, through the oxidation process decomposition treatment;

[0010] S3, state awareness, real-time measurement of the electrical impedance of the water in the internal collaborative reaction cavity, obtaining the real-time impedance value representing the intracavity pollutant processing load;

[0011] S4, performing collaborative regulation, according to the real-time impedance value, synchronously adjusting the strength of the external electric field in S1 and the processing power of intracavity degradation in S2 in a control cycle.

[0012] According to the above technical solution: through the state awareness module to continuously measure the electrical impedance of the water in the internal reaction cavity to quantize the pollutant processing load in real time, and by the collaborative regulation module to compare the impedance value with the preset optimal interval, and then synchronously adjust the pollutant capture rate of the external electric field generation module and the decomposition processing power of the intracavity degradation module. This closed-loop control mechanism dynamically balances the pollutant entering and degradation, so that the system can adapt to the continuous fluctuation of river water quality, and keep the internal processing load stable in the efficient interval, thereby fundamentally solving the problem of unstable operation of the traditional fixed parameter system due to the inability to cope with water quality changes.

[0013] Preferably, S1 includes: applying a direct current voltage between the outer anode net and the inner cathode net of the repair unit to establish the electrophoresis and electroosmosis flow field from outside to inside.

[0014] Preferably, S2 includes: applying a high-frequency pulse potential to a three-dimensional porous BDD electrode arranged in the internal collaborative reaction cavity to produce active oxidative species through the synergistic effect of electrolysis and micro-plasma discharge to decompose the pollutants.

[0015] Preferably, S3 includes: measuring the electrical impedance of the water flowing through the intracavity through one or more pairs of impedance sensing electrodes integrated in the internal collaborative reaction cavity to obtain the real-time impedance value.

[0016] Preferably, S4 includes: comparing the real-time impedance value with a preset reference impedance interval;

[0017] When the real-time impedance value is lower than the lower limit of the reference impedance interval, it is determined that the system is in an overload state, and then the strength of the external electric field is reduced and the processing power of the intracavity degradation is increased.

[0018] Preferably, S4 further includes: when the real-time impedance value is higher than the upper limit of the reference impedance interval, it is determined that the system is in an underload state, and then the strength of the external electric field is increased and the processing power of the intracavity degradation is reduced.

[0019] Preferably, the S4 further comprises: when the real-time impedance value is within the reference impedance interval, determining that the system is in an optimal load state, and then maintaining the intensity of the external electric field and the processing power of the intracavity degradation unchanged.

[0020] Preferably, the S4 comprises adjusting the output voltage of the direct-current power supply and adjusting the output power or pulse duty cycle of the high-frequency pulse power supply.

[0021] Preferably, the steps of S3 and S4 are repeatedly executed in each control cycle until the preset repair task is completed or terminated, so as to realize closed-loop adaptive control of the entire repair process.

[0022] In a second aspect, the present application provides the following technical solutions: a river water remediation system using high-energy potential, the system comprising:

[0023] An external electric field generation module is configured to generate an external electric field to establish an external-to-internal electrophoresis and electroosmosis flow field in the water body around the repair unit, so as to drive the water body and pollutants to migrate to the interior of the repair unit;

[0024] An intracavity degradation module is configured to decompose and process the water body and pollutants migrated into the interior of the repair unit through an oxidation process;

[0025] A state sensing module is configured to measure the electrical impedance of the water body in the interior of the internal collaborative reaction cavity in real time, and obtain a real-time impedance value representing the processing load of the pollutants in the cavity;

[0026] A collaborative control module is configured to adjust the intensity of the external electric field generated by the external electric field generation module and the processing power of the intracavity degradation module in a control cycle according to the real-time impedance value.

[0027] The present application has the following beneficial effects:

[0028] 1、In the present application, by taking the water body impedance of the internal reaction cavity as a real-time representation parameter of the processing load of the pollutants, the capture rate of the external pollutants and the degradation rate of the internal pollutants are dynamically balanced, so that the remediation system can adapt to the dynamic changes of the river water quality, and the operation stability is improved.

[0029] 2、In the present application, when the processing load is low, the impedance change is sensed, and the operation power of the high-energy degradation unit is actively reduced, which avoids the energy waste during the period when the water quality is good, and significantly optimizes the energy efficiency of the system.

[0030] 3、The application adopts active overload protection logic, in the case of sudden increase of pollutant concentration, the system not only enhances the degradation capacity, but also actively controls the entering rate of pollutants by weakening the external capture field, ensures that the internal degradation unit can completely treat the pollutants, and guarantees the lower limit of the repair effect. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A method flow chart of a river water body repair method using high-energy potential is provided for the application;

[0032] Figure 2 A system architecture diagram of a river water body repair system using high-energy potential is provided for the application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0034] Embodiment one

[0035] Please refer to the accompanying Figure 1 In the first embodiment of the application, the application provides a river water body repair method using high-energy potential, comprising the following steps:

[0036] S1, generating an external electric field, establishing an electrophoresis and electroosmosis flow field from outside to inside in the water body around the repair unit to drive the water body and pollutants to migrate to the inside of the repair unit; a direct current voltage is applied between the outer anode net and the inner cathode net of the repair unit to establish an electrophoresis and electroosmosis flow field from outside to inside.

[0037] Specifically, an electrophoresis and electroosmosis flow field from outside to inside is established in the water body around the repair unit to drive the water body and pollutants to migrate to the inside of the repair unit. Specifically, a direct current voltage is applied between the outer anode net and the inner cathode net of the repair unit to establish an electrophoresis and electroosmosis flow field from outside to inside.

[0038] During the execution of this step, the central control unit instructs the direct current power supply to connect the positive electrode to the outer anode net and the negative electrode to the inner cathode net, and applies a direct current voltage V ext Due to the coaxial geometric configuration of the two electrode nets, a direct current electric field basically distributed radially from outside to inside will be established in the water body between them The electric field produces two main driving effects on the water body and the pollutants contained therein:

[0039] Electrophoresis: Negatively charged pollutants are commonly found in river water, such as negatively charged clay colloid particles, humic substances, organic macromolecules with carboxyl or phenolic hydroxyl functional groups, and common anions (e.g., ... (etc.). These negatively charged substances i will experience an electric force in an electric field. The role of q i It is the charge it carries. Because q i The electric field force is negative. Direction and electric field The direction is opposite, that is, pointing towards the external anode.

[0040] However, as the water body flows inward, these pollutants attracted to the vicinity of the anode will pass through the porous anode mesh with the water flow and continue to migrate to the inner cathode mesh under the action of the electric field, eventually entering the central internal co-reaction chamber.

[0041] Electroosmotic flow: Under the influence of an electric field, water molecules, being polar molecules, form an electric double layer near the electrode surface. The electric field exerts a force on the net residual charge in the double layer, which drags the entire water medium to produce a macroscopic directional flow. In the configuration of this system, the direction of electroosmotic flow is also from the outside to the inside. This flow does not depend on whether the contaminants are charged, but rather achieves non-mechanical pumping of the water itself, synergistically transporting the water and its contained dissolved colloidal or suspended contaminants to the internal synergistic reaction chamber.

[0042] In actual operation, electroosmosis is the main transport mechanism for the inward migration of water and pollutants. Electrophoresis, on the other hand, adds a modulating effect on charged substances. Although negatively charged pollutants are subjected to an electric field force pointing towards the external anode, under the stronger inward hydraulic drag force dominated by electroosmosis, these pollutants will eventually pass through the porous outer anode mesh with the mainstream water flow and be transported to the internal co-reaction chamber.

[0043] Therefore, step S1, by applying a DC voltage, constructs a composite driving field of electrophoresis and electroosmosis around the remediation unit, achieving effective capture of pollutants and continuous pumping of water, thus continuously providing a high concentration of treatment targets for the subsequent intracavitary degradation step S2. The strength of this composite driving field, i.e., the migration flux of pollutants, can be adjusted by regulating the DC voltage V. ext The size is directly controlled.

[0044] S2. Perform intracavitary degradation, decompose water and pollutants that have migrated into the synergistic reaction chamber inside the remediation unit through an oxidation process; apply a high-frequency pulse potential to the three-dimensional porous BDD electrode set in the internal synergistic reaction chamber to generate active oxides through the synergistic effect of electrolysis and micro-plasma discharge, thereby decomposing pollutants.

[0045] Specifically, a high-frequency pulse potential is applied to a three-dimensional porous BDD electrode arranged in the internal synergistic reaction chamber to produce active oxidants through the synergistic effect of electrolysis and micro-plasma discharge to decompose the pollutants.

[0046] During the execution of the present step, the water body containing a higher concentration of pollutants migrated from step S1 flows through the three-dimensional porous boron-doped diamond (BDD) electrode, which is a core functional component in the internal synergistic reaction chamber. The central control unit instructs the high-frequency pulse power module to apply a high-frequency pulse potential with a preset waveform to the BDD electrode to synergistically excite two highly efficient advanced oxidation mechanisms on the macroscopic surface and the microscopic pore structure of the electrode.

[0047] BDD is chosen as the electrode material based on its physical and chemical properties:

[0048] 1) extremely wide electrochemical stability window; 2) highest oxygen evolution overpotential among all practical electrode materials; 3) high chemical stability and corrosion resistance.

[0049] Among them, the high oxygen evolution overpotential is the key to efficient electrochemical oxidation. On traditional anodes (such as DSA electrodes), when the anode potential increases, the oxidation reaction of water (2H2O→O2+4H + +4e - ) will occur preferentially, which consumes a large amount of electric charge, but the oxygen produced has limited oxidation ability for most organic pollutants, constituting an ineffective side reaction. On the surface of the BDD electrode, this side reaction is effectively suppressed due to the extremely high energy barrier of the oxygen evolution reaction. Therefore, when a high enough anode potential is applied, the oxidation of water will follow another reaction path, i.e., directly generating hydroxyl radicals (·OH) with extremely high redox potential (E0=2.8V vs. SHE). The reaction equation of this process is:

[0050] H2O→·OH+H + +e -

[0051] The generated hydroxyl radicals are a non-selective strong oxidant that can indiscriminately mineralize most organic pollutant molecules flowing through the electrode surface into carbon dioxide (CO2), water (H2O), and inorganic ions, thereby achieving the removal of pollutants.

[0052] The mechanism of underwater micro-plasma discharge is the intensification means of the present step. The potential applied by the high-frequency pulse power source has a nanosecond voltage rising edge, i.e., an extremely high The electrode has a huge specific surface area and a complex microscopic geometric configuration.

[0053] Its structure exists in a large number of micron-sized pores, sharp edges and sharp ends. According to the electric field theory, significant electric field enhancement effect will occur at these microstructures, so that the local area electric field strength is much higher than the macroscopic average electric field strength. When the instantaneous peak value of the pulse voltage reaches, these local strong electric field is enough to break down the insulation of the surrounding water medium (that is, exceed the dielectric strength of water), thereby forming a low-temperature plasma on the microscale, that is, underwater micro-plasma.

[0054] This discharge process can instantaneously generate a reaction environment containing a variety of active species in the bulk solution. In addition to being able to generate a large number of hydroxyl radicals (·OH), it can also generate ozone (O3), hydrogen peroxide (H2O2) and other active oxygen species, accompanied by physical effects such as ultraviolet radiation, shock waves and high-energy electrons. The two mechanisms achieve synergistic effect in this step.

[0055] When the water body containing pollutants flows through the three-dimensional porous BDD electrode, the pollutant molecules not only undergo direct oxidation by the hydroxyl radicals generated by electrochemistry on its surface, but also undergo the combined action of a variety of active species and physical effects generated by micro-plasma discharge in the pore space through which it flows. The combination of surface reaction and bulk reaction creates a highly efficient pollutant degradation reaction field.

[0056] The overall treatment power P of this step int is a controllable variable, and the central control unit can adjust the electrical parameters such as the output power, pulse frequency, pulse duty cycle or voltage amplitude of the high-frequency pulse power supply to accurately adjust the intensity of the degradation treatment.

[0057] S3, state sensing, real-time measurement of the electrical impedance of the water body in the internal synergistic reaction cavity, obtaining real-time impedance values representing the pollutant treatment load in the cavity; through one or more pairs of impedance sensing electrodes integrated in the internal synergistic reaction cavity, the electrical impedance of the water body flowing through the cavity is measured to obtain real-time impedance values.

[0058] Specifically, through one or more pairs of impedance sensing electrodes integrated in the internal synergistic reaction cavity, the electrical impedance of the water body flowing through the cavity is measured to obtain real-time impedance values.

[0059] During the execution of this step, in order to quantitatively characterize the pollutant treatment state in the internal synergistic reaction cavity, the system enables the state sensing component. The core of this component is one or more pairs of impedance sensing electrodes that are physically independent of the external electric field generating component and the internal BDD electrode. These sensing electrodes can be made of corrosion-resistant conductive materials such as platinum, graphite or 316L stainless steel, and are fixedly installed inside the reaction cavity, and their positions are set to measure the representative electrical characteristics of the water body flowing through the core degradation area.

[0060] The measurement operation is initiated by a central control unit, which controls a dedicated impedance measurement circuit to apply a low-amplitude, high-frequency AC sinusoidal voltage signal V ac (t) to a selected pair of sensing electrodes. The use of an AC signal instead of a DC signal aims to avoid Faraday reactions (electrolysis) at the sensing electrode surface, thus preventing interference with the water body's chemical composition and fouling of the electrode surface, ensuring the accuracy and long-term stability of the measurement.

[0061] The selection of a high frequency (e.g., in the range of 1 kHz to 100 kHz) aims to minimize the double-layer capacitance effect at the electrode-solution interface, so that the measurement result more accurately reflects the bulk resistivity characteristics of the water body itself. While the AC voltage is being applied, the impedance measurement circuit simultaneously measures the AC current response signal I ac (t) flowing through the sensing electrodes. According to the complex form of Ohm's law, the water body's impedance value Z m (t) at this moment is calculated as follows:

[0062] This calculation process is completed in the central control unit or its attached signal processing unit, generating a discrete-time sequence of real-time impedance values.

[0063] The technical principle of this step is that the measured electrical impedance value Z m is inversely proportional to the conductivity σ of the water body in the cavity (Z m ∝ 1 / σ), which is determined by the concentration, valence state, and mobility of the mobile carriers (mainly ions) in the water body. In the remediation system, the total ion concentration of the water body in the cavity is a direct reflection of the pollutant treatment load, which comes from:

[0064] 1. The background inorganic salt ions contained in the river water body itself.

[0065] 2. The dissolved ionic pollutant (such as , etc.) enriched from step S1.

[0066] 3. The colloidal or suspended particulate matter with a net charge enriched from step S1.

[0067] 4. The charged intermediate products (such as organic acid ions) produced during the degradation process in step S2, and the final inorganic ions.

[0068] Therefore, when the pollutant flux entering the reaction cavity increases, or the accumulated pollutants captured in the cavity increase, the total ion concentration of the water body in the cavity will inevitably rise. The rise in total ion concentration will directly cause the water body's conductivity σ to rise, and in turn cause the measured electrical impedance Z m to decrease.

[0069] Conversely, when the pollutant load decreases, the electrical impedance Z m By this explicit inverse relationship, step S3 converts a macroscopic chemical indicator, such as the pollutant treatment load, which is directly measured on-line, into a physical electrical parameter (water impedance) that is easy to measure continuously, providing a timely and reliable quantitative input for the subsequent step S4 of closed-loop feedback control.

[0070] S4, performing coordinated regulation, according to the real-time impedance value, synchronously adjusting the strength of the external electric field in S1 and the treatment power of the in-cavity degradation in S2 within a control period; comparing the real-time impedance value with a preset reference impedance interval;

[0071] When the real-time impedance value is lower than the lower limit of the reference impedance interval, the system is determined to be in an overload state, and the strength of the external electric field is immediately reduced, and the treatment power of the in-cavity degradation is immediately increased.

[0072] When the real-time impedance value is higher than the upper limit of the reference impedance interval, the system is determined to be in an underload state, and the strength of the external electric field is immediately increased, and the treatment power of the in-cavity degradation is immediately reduced.

[0073] When the real-time impedance value is within the reference impedance interval, the system is determined to be in an optimal load state, and the strength of the external electric field and the treatment power of the in-cavity degradation are immediately maintained unchanged.

[0074] Adjusting the output voltage of the direct current power supply and adjusting the output power or pulse duty ratio of the high-frequency pulse power supply.

[0075] Specifically, this step is the core of the closed-loop adaptive control of the entire repair method, and its execution process is completed by the central control unit. The central control unit receives and processes the real-time impedance value Zm(t) generated by step S3 within each preset control period (for example, Δt = 1 minute), and outputs adjustment instructions to the direct current power supply module and the high-frequency pulse power supply module based on a set of preset control logic.

[0076] The first step of this control logic is system state determination. The central control unit compares the real-time impedance value Zm(t) with a preset reference impedance interval [Zref,min, Zref,max]. This reference impedance interval is not fixed, but is determined by experiment during system debugging, representing the water impedance range corresponding to the internal collaborative reaction cavity running at the optimal load.

[0077] In this state, the entering rate of pollutants and the degradation rate in the cavity reach a dynamic balance, so that the overall treatment efficiency of the system is the highest and the energy consumption is the lowest. According to the comparison result, the system will be determined to be one of the following three states:

[0078] Overload condition: triggered when Zm(t) < Zref,min. As S3, a lower impedance value directly corresponds to a higher total ion concentration in the chamber. This condition indicates that the pollutant flux driven into the chamber by the external electric field (S1) has exceeded the current set processing capacity of the in-chamber degradation (S2) unit, resulting in the accumulation of pollutants in the chamber.

[0079] Underload condition: triggered when Zm(t) > Zref,max. A higher impedance value corresponds to a lower total ion concentration in the chamber. This condition indicates that there is a surplus of processing capacity in the in-chamber degradation unit, while the pollutant driven into the chamber by the external electric field is insufficient, resulting in the overall processing capacity of the system not being fully utilized, and the waste of energy.

[0080] Optimal load condition: triggered when Zref,min≤ Zm(t) ≤ Zref,max. This condition indicates that the system is operating near the preset equilibrium point, and the migration and degradation rates of pollutants are well matched.

[0081] After completing the state determination, the second step of the control logic is to perform parameter tuning. The central control unit generates and sends specific control instructions according to the determined state:

[0082] When the overload condition is determined, the central control unit performs a set of reverse adjustment operations: on the one hand, it instructs the DC power supply module to lower the output voltage V ext , which directly reduces the strength of the external electric field, thereby slowing down the rate of electrophoresis and electroosmosis, reducing the subsequent pollutant flux into the reaction chamber, and gaining time for in-chamber degradation; on the other hand, it simultaneously instructs the high-frequency pulse power supply module to increase the processing power P int , which can be achieved by increasing the pulse voltage amplitude, improving the pulse duty cycle, or increasing the pulse frequency, etc., the purpose of which is to enhance the strength of electrochemical oxidation and micro-plasma discharge, to speed up the decomposition rate of the accumulated pollutants in the chamber.

[0083] When the underload condition is determined, the central control unit performs another set of coordinated reverse adjustment operations: on the one hand, it instructs the DC power supply module to increase the output voltage V ext to enhance the external electric field, capture and drive more pollutants into the reaction chamber; on the other hand, it instructs the high-frequency pulse power supply module to reduce the processing power P int , which reduces unnecessary energy consumption while ensuring processing effectiveness.

[0084] When the optimal load condition is determined, the central control unit does not issue adjustment instructions, and the DC power supply module and the high-frequency pulse power supply module both maintain the output parameters of the previous control period unchanged, i.e., V ext and P int remain constant.

[0085] By executing the state sensing, state determining and parameter adjusting process in each control cycle, the application realizes a dynamic feedback control, which enables the remediation system to autonomously cope with the temporal and spatial fluctuations of the pollutant concentration in the river water body, and always determines its working state near the optimal processing interval, thereby ensuring the remediation effect while minimizing the operating energy consumption.

[0086] Embodiment two:

[0087] In some river sections affected by the confluence of tributaries, the pollutant concentration in the water body presents irregular dynamic fluctuations. For example, the downstream of a certain river section receives a mixed industrial and agricultural tributary, the flow and pollutant concentration of which change randomly due to upstream production activities, farmland irrigation drainage, etc. This leads to frequent fluctuations in the processing load faced by the in-situ remediation system deployed in the river section within a scale of several hours or even tens of minutes.

[0088] The remediation system running with fixed parameters has difficulty in maintaining stable processing effect when facing such a continuously fluctuating load: during the load peak period, the system's processing capacity is insufficient, leading to a decrease in pollutant removal rate; during the load trough period, the system's power is redundant, causing energy waste. Such continuous fluctuations in processing performance and energy efficiency are the operational instability. To solve the above problems, please refer to the attached Figure 2 , a high-energy potential is used to repair the river water body, the system includes:

[0089] An external electric field generation module for generating an external electric field to establish an electrophoresis and electroosmosis flow field from outside to inside in the water body around the remediation unit, to drive the water body and pollutants to migrate to the inside of the remediation unit;

[0090] An intracavity degradation module for decomposing and processing the water body and pollutants that migrate into the internal cooperative reaction cavity of the remediation unit through an oxidation process;

[0091] A state sensing module for measuring the electrical impedance of the water body in the internal cooperative reaction cavity in real time to obtain a real-time impedance value representing the pollutant processing load in the cavity;

[0092] A cooperative control module for synchronously adjusting the strength of the external electric field generated by the external electric field generation module and the processing power of the intracavity degradation module within a control cycle according to the real-time impedance value.

[0093] The remediation system is deployed in the above-mentioned river section, and the reference impedance interval preset in the cooperative control module is 800Ω, 1000Ω]. Now simulate a process of continuous fluctuation of the processing load caused by the confluence of the tributary, and the system control cycle is Δt = 2 minutes:

[0094] System module operation process:

[0095] Initial steady operation (t=14:00): The system is under a relatively stable processing load.

[0096] The state-aware module measures and transmits the real-time impedance value to the co-regulatory module, which is 910Ω, within the reference interval [800Ω, 1000Ω].

[0097] The co-regulatory module receives the data and determines that the system is in the "optimal load" state. The module does not issue adjustment instructions, so that the direct current voltage of the external electric field generation module is maintained at 8V, and the processing power of the intracavity degradation module is maintained at 300W.

[0098] Adapting to load increase (t=14:15~14:25): The pollutant concentration of the tributary begins to increase.

[0099] At t=14:15, the pollutant flux captured into the internal co-reacting cavity increases. The state-aware module detects that the total ion concentration of the intracavity water body rises, causing the impedance value to drop to 750Ω, below the lower limit of the reference interval.

[0100] In the next control cycle (t=14:17), the co-regulatory module determines that the system enters an overload state. The module immediately executes regulation: it issues an instruction to the external electric field generation module to reduce its output voltage from 8V to 7V to reduce the capture rate of pollutants; at the same time, it issues an instruction to the intracavity degradation module to increase its processing power from 300W to 350W to increase the decomposition rate of the pollutants that have entered.

[0101] At t=14:25, after regulation, the entry rate and degradation rate of pollutants reach a new level of balance. The state-aware module measures that the impedance value rises to 820Ω, entering the optimal load interval. The co-regulatory module determines that the system returns to the "optimal load" state and maintains the new parameter combination of V ext =7V, P int =350W.

[0102] Adapting to load decrease (t=14:40~14:50): The pollutant concentration of the tributary begins to decrease.

[0103] At t=14:40, the pollutant flux entering the reaction cavity decreases, and the state-aware module detects that the total ion concentration of the intracavity water body decreases, causing the impedance value to rise to 1080Ω, above the upper limit of the reference interval.

[0104] In the next control cycle (t = 14:42), the collaborative regulation module determines that the system enters the "underload" state. The module performs regulation: sends instructions to the external electric field generation module to increase its output voltage from 7V to 9V to increase the capture rate of pollutants; at the same time, sends instructions to the intracavity degradation module to reduce its processing power from 350W to 250W to match the lower processing demand and reduce energy consumption.

[0105] At t = 14:50, the system reaches equilibrium again under the new parameters. The state perception module measures the impedance value to drop to 960Ω, returning to the optimal load range. The collaborative regulation module determines that the system returns to the "optimal load" state and maintains the parameter combination of V ext = 9V, P int = 250W.

[0106] Finally, it should be noted that the above is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

Claims

1. A method for restoring river water using high-energy potential, characterized in that, Includes the following steps: S1. Generate an external electric field to establish an electrophoretic and electroosmotic flow field from the outside to the inside in the water body surrounding the remediation unit, so as to drive the water and pollutants to migrate into the interior of the remediation unit. S2. Perform intracavitary degradation, decomposing the water and pollutants that have migrated into the co-reaction chamber inside the repair unit through an oxidation process; S3. Perform state perception and measure the electrical impedance of the water in the internal collaborative reaction chamber in real time to obtain the real-time impedance value characterizing the pollutant treatment load in the chamber. S4. Perform coordinated control: based on the real-time impedance value, synchronously adjust the intensity of the external electric field in S1 and the processing power of the intracavity degradation in S2 within one control cycle.

2. The method for restoring river water using high-energy potential according to claim 1, characterized in that, S1 includes: applying a DC voltage between the outer anode mesh and the inner cathode mesh of the repair unit to establish the electrophoresis and electroosmosis flow field from the outside to the inside.

3. The method for restoring river water using high-energy potential according to claim 1, characterized in that, S2 includes: applying a high-frequency pulsed potential to a three-dimensional porous BDD electrode disposed in the internal synergistic reaction chamber to generate active oxides through the synergistic effect of electrolysis and micro-plasma discharge, thereby decomposing the pollutants.

4. The method for restoring river water using high-energy potential according to claim 1, characterized in that, The S3 includes: measuring the electrical impedance of the water flowing through the cavity by means of one or more pairs of impedance sensing electrodes integrated in the internal co-reaction cavity, so as to obtain the real-time impedance value.

5. A method for restoring river water using high-energy potential according to claim 1, characterized in that, S4 includes: comparing the real-time impedance value with a preset reference impedance range; When the real-time impedance value is lower than the lower limit of the reference impedance range, the system is determined to be in an overload state, and the intensity of the external electric field is reduced, while the processing power of the intracavity degradation is increased.

6. A method for restoring river water using high-energy potential according to claim 5, characterized in that, S4 further includes: when the real-time impedance value is higher than the upper limit of the reference impedance range, determining that the system is in an underload state, then increasing the intensity of the external electric field and reducing the processing power of the intracavity degradation.

7. A method for restoring river water using high-energy potential according to claim 6, characterized in that, S4 further includes: when the real-time impedance value is within the reference impedance range, determining that the system is in the optimal load state, and then maintaining the strength of the external electric field and the processing power of the intracavity degradation unchanged.

8. A method for restoring river water using high-energy potential according to claim 1, characterized in that, S4 includes adjusting the output voltage of the DC power supply and adjusting the output power or pulse duty cycle of the high-frequency pulse power supply.

9. A method for restoring river water using high-energy potential according to claim 1, characterized in that, It also includes repeating steps S3 and S4 in each control cycle until the preset repair task is completed or terminated, so as to achieve closed-loop adaptive control of the entire repair process.

10. A system for restoring river water using high-energy potential, characterized in that, The system for a method of restoring river water using high-energy potential as described in any one of claims 1-9 comprises: An external electric field generation module is used to generate an external electric field to establish an electrophoretic and electroosmotic flow field from the outside to the inside in the water surrounding the remediation unit, so as to drive the water and pollutants to migrate into the interior of the remediation unit. The intracavitary degradation module is used to decompose water and pollutants that have migrated into the co-reaction chamber inside the repair unit through an oxidation process. The status sensing module is used to measure the electrical impedance of the water in the internal collaborative reaction chamber in real time to obtain the real-time impedance value characterizing the pollutant treatment load in the chamber. The coordinated control module is used to synchronously adjust the intensity of the external electric field generated by the external electric field generation module and the processing power of the cavity degradation module within a control cycle based on the real-time impedance value.

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