Intelligent degradation balance control device for water pollutants

Abstract

The application discloses a kind of water body pollutant intelligent degradation balance control device, belong to water environment treatment technical field.This device adopts bypass insulation cyclone detection structure to cooperate equipotential grounding, eliminate electrode electromagnetic detection interference;Setting acid-base, chlorine-containing reagent independent dosing loop, realize pH priority control chlorine through hardware interlocking, avoid chlorine lock;At the same time, based on flow feedforward linkage control ultraviolet power, electrode current and hydraulic retention time, with oblique liquid injection, low flow interlocking shutdown design.This application considers water quality detection accuracy, reagent energy consumption control and pipeline, equipment protection, can be adapted to flow, water quality fluctuation under the condition of swimming pool water disinfection treatment.

Description

Technical Field

[0001] This invention relates to the field of water treatment and disinfection equipment technology, and in particular to an intelligent degradation balance control device for water pollutants. Background Technology

[0002] Municipal tap water, decentralized rural water supply, reclaimed water, public swimming pools, and other water treatment systems all share common water quality problems. During operation, pathogenic microorganisms easily proliferate and accumulate, while trace amounts of persistent and difficult-to-degrade pollutants gradually accumulate, making them difficult to remove through conventional processes. Furthermore, the decomposition of microorganisms and pollutants easily causes unpleasant odors in the water, resulting in overall substandard sensory water quality.

[0003] Currently, the mainstream online disinfection methods for water bodies in the industry are mainly divided into two categories: brine electrolysis chlorination disinfection and traditional mercury lamp ultraviolet disinfection. However, both of these single treatment technologies have inherent and unavoidable technical shortcomings, strong functional limitations, and cannot adapt to the needs of sterilization, deodorization, and simultaneous treatment of trace pollutants in multiple scenarios of complex water bodies, making it difficult to solve the current complex water quality treatment problems.

[0004] While brine electrolysis chlorination technology can achieve continuous online disinfection of water, meeting the basic requirement for sustained sterilization, its overall operation relies on a high-salt electrolysis environment. During operation, it requires continuous and large-scale addition of sodium chloride to ensure stable chlorine production, resulting in high reagent consumption and operating costs. Furthermore, the numerous microbubbles generated during electrolysis, combined with the high-salt environment in the pipeline, directly interfere with the accurate signal acquisition of high-precision water quality detection probes such as ORP, causing distortion and significant deviations in real-time water quality monitoring data. Moreover, the automated control logic of existing electrolysis chlorination systems relies entirely on real-time measured water quality data. Deviations in this monitoring data directly lead to malfunctions and operational failures in the entire disinfection control system, frequently resulting in over-disinfection causing secondary pollution of the water body or disinfection failure leading to excessive bacterial counts, resulting in extremely poor water quality stability.

[0005] Traditional mercury lamp ultraviolet disinfection technology only has the function of inactivating pathogenic microorganisms. It has almost no ability to oxidize and degrade the increasingly complex and persistent trace organic pollutants in water bodies, and cannot decompose odor-causing substances in water bodies, making it difficult to improve the odor and sensory quality of water. The single ultraviolet disinfection mode is extremely limited in function and cannot meet the multiple core treatment needs of water sterilization, odor removal, and degradation of trace persistent pollutants. At the same time, traditional mercury lamps pose environmental safety hazards due to mercury pollution, limit the application scenarios of the equipment, impose heavy environmental pressure on operation and maintenance, and have poor overall adaptability.

[0006] In addition, the existing two mainstream technologies have insufficient water quality detection accuracy, cannot adaptively adjust equipment parameters according to dynamic changes in water quality, cannot match the optimal treatment conditions in real time for fluctuations in influent water quality, and are difficult to adapt to the complex water body treatment needs under multiple scenarios and multiple water quality disturbances.

[0007] In summary, existing mainstream water treatment and disinfection technologies each have insurmountable technical shortcomings. A single technology cannot simultaneously optimize multiple water quality indicators, making it difficult to meet the current demands for standardized, intelligent, and stable treatment of water bodies in various scenarios. To address these shortcomings, this invention proposes an intelligent degradation and balance control device for water pollutants. Summary of the Invention

[0008] This invention provides an intelligent degradation balance control device for water pollutants, which solves the problems of existing ultraviolet-electrochemical equipment that cannot adaptively adjust parameters according to water quality and quantity, has poor detection accuracy and electrical safety hazards, fails to perform simultaneous addition of acid, alkali and chlorine-containing agents and corrodes pipelines, has inaccurate dosing and no interlock protection for abnormal operating conditions, and is prone to causing the effluent water quality to exceed the standard.

[0009] To achieve the above objectives, this invention provides an intelligent water pollutant degradation balance control device, including a main water transmission pipeline; it also includes an inlet water quality sensing unit, an ultraviolet-electrochemical synergistic degradation reactor, a bypass water quality detection unit, a reagent dosing component, and an intelligent control unit. The inlet water quality sensing unit is installed in the upstream inlet section of the main water transmission pipeline; the ultraviolet-electrochemical synergistic degradation reactor is connected in series along the water flow direction of the main water transmission pipeline and located inside the downstream section of the inlet water quality sensing unit; the bypass water quality detection unit is equipped with an independent bypass branch pipe, with both ends of the bypass branch pipe connected in parallel across the main water transmission pipeline wall downstream of the outlet end of the ultraviolet-electrochemical synergistic degradation reactor, forming a parallel pipeline topology with the main water transmission pipeline; the reagent dosing component is installed in the downstream outlet section of the main water transmission pipeline, downstream of the bypass water quality detection unit; the intelligent control unit establishes bidirectional communication links with the inlet water quality sensing unit, the ultraviolet-electrochemical synergistic degradation reactor, and the bypass water quality detection unit via an industrial communication bus. The intelligent control unit has a built-in hardware comparison module for water quality deviation and a hardware calculation module for closed-loop control of reactor parameters. The data reading end of the intelligent control unit is connected to the data output ends of the influent water quality sensing unit and the bypass water quality detection unit, while the parameter control output end is connected to the control input ends of the UV-electrochemical co-degradation reactor and the reagent dosing component. The controlled parameters of the UV-electrochemical co-degradation reactor include UV light power, electrode output current, and hydraulic residence time in the pipeline, which is regulated in conjunction with the electric flow regulating valve of the main water supply pipeline. The hardware comparison module for water quality deviation is used to collect and compare influent and bypass effluent water quality data at high speed, calculate pollutant degradation deviation, and determine the effluent water quality compliance status. The hardware calculation module for closed-loop control of reactor parameters is used to receive water quality deviation results, calculate and control the amount of water in real time, and synchronously control the UV light power, electrode current, reagent dosage, and hydraulic residence time in the pipeline to achieve automatic closed-loop adjustment of reactor operating parameters as water quality fluctuates.

[0010] Optionally, the bypass water quality detection unit includes a transparent tank, a tangential bottom-inlet branch pipe, a top-outlet branch pipe, a pH probe, and an ORP probe. A throttling valve is installed on the tangential bottom-inlet branch pipe. One end of the tangential bottom-inlet branch pipe connects to the bypass branch pipe, and the other end connects to the bottom of the transparent tank. One end of the top-outlet branch pipe connects to the top of the transparent tank, and the other end flows back to the main water supply pipeline. Water flows tangentially from the bottom into the transparent tank via the bypass branch pipe, the throttling valve, and the tangential bottom-inlet branch pipe, and then flows out through the top-outlet branch pipe back to the main water supply pipeline. The pH probe and ORP probe are obliquely inserted into the side wall of the transparent tank. The signal output terminals of the pH probe and ORP probe are electrically connected to the analog acquisition ports of the intelligent control unit one-to-one via shielded signal lines.

[0011] Optionally, the inlet and outlet branch pipes are made of PTFE insulated pipes; a grounding rod is installed at the bottom of the transparent pool, and the grounding rod is connected to the equipotential protection grounding busbar of the factory area.

[0012] Optionally, the reagent dosing components include independent hypochlorite storage tanks, dilute sulfuric acid storage tanks, and corresponding chlorine dosing pumps and acid dosing pumps; both dosing pumps are electrically connected to the intelligent control unit and receive PWM pulse signals to achieve stepless variable dosing.

[0013] Optionally, the chlorine dosing pump is an electromagnetic diaphragm pump with a built-in reflux bypass, which connects to a sealed gas phase cavity above the liquid surface of the hypochlorite storage tank; the acid dosing pump is an electromagnetic interference-resistant micro-stepping peristaltic pump.

[0014] Optionally, dynamic back pressure injection valves are installed at the outlets of the two dosing pumps; the injection valves are connected to the main water supply pipeline at an angle of 15°-30°.

[0015] Optionally, the intelligent control unit has a built-in pH-ORP hardware and software interlock structure based on hardware interlock relays; the control sequence is as follows: 50ms millisecond-level water quality flow data acquisition → pH exceeding the standard, priority start of acid dosing pump and lockout of chlorine dosing pump → pH reaching the standard, 120s delay, unlocking of chlorine dosing pump, and addition of hypochlorite in combination with flow rate.

[0016] Optionally, the influent water quality sensing unit integrates COD, turbidity, and flow sensors. The flow sensor signal is directly connected to the high-speed IO port of the intelligent control unit to enable flow feedforward adaptive regulation capability. The power of the ultraviolet light source, the pulse current of the bipolar BDD electrode, and the pipeline flow can be adjusted according to the influent flow rate to change the hydraulic residence time of the reactor.

[0017] Optionally, the intelligent control unit has a built-in flow ratio limiting dosing logic, which can adjust the dosing frequency according to the influent water quality and real-time flow rate; it sets a minimum safe flow velocity of 0.2 m / s inside the main water supply pipeline, and interlocks to stop the machine and uploads an alarm signal to the host computer when the flow velocity does not meet the standard; it also integrates low liquid level and water quality exceeding limit audible and visual alarms and shutdown linkage functions.

[0018] Optionally, the reactor is arranged sequentially along the water flow direction with an ultraviolet lamp group, a BDD mesh electrode array, and a porous turbulence rectifier plate with an opening ratio of 45%-50%; the axial distance between the ultraviolet lamp group and the BDD mesh electrode array is 80-120mm, and the mesh number of the BDD mesh electrode array is 20 mesh.

[0019] The beneficial effects that this invention can achieve are: This invention proposes an intelligent degradation balance control device for water pollutants. This device collects feedforward data on influent water quality and flow rate through an upstream influent water quality sensing unit, and configures a parallel bypass water quality detection unit at the reactor outlet to construct a two-way closed-loop water quality monitoring system. Furthermore, relying on an intelligent control unit equipped with hardware comparison and high-speed computing modules, it synchronously regulates the core operating parameters of the ultraviolet-electrochemical reactor and the dosage of downstream reagents. This invention specifically addresses four major industry pain points in existing ultraviolet-electrochemical water treatment equipment: fixed degradation parameters, distorted online detection data, disordered reagent dosing sequence, and lack of electrical safety protection systems.

[0020] The influent water quality sensing unit of this invention connects the flow signal to a high-speed I / O port to achieve millisecond-level flow feedforward. Unlike traditional back-end feedback control modes, it can dynamically adjust the ultraviolet light power and BDD electrode pulse current in advance based on the influent COD, turbidity, and flow rate, while simultaneously changing the hydraulic residence time through an electric flow regulating valve. Combined with an 80-120mm ultraviolet-electrode spacing, a 20-mesh mesh electrode, and a rectifier plate with a 45%-50% open area ratio inside the reactor, the synergistic coupling effect of ultraviolet light and electric field is enhanced. The rectifier plate eliminates turbulence in the pipeline, ensuring sufficient contact between the water, electrodes, and ultraviolet light. This avoids energy waste in low-pollution influent and prevents substandard degradation in high-pollution influent.

[0021] This invention adopts a tangential bottom-entry bypass water inlet structure, combined with a throttling fine-tuning valve to stabilize the bypass water flow velocity, avoiding the impact of turbulent water flow in the main pipeline on the probe and causing data drift. The bypass pipeline uses PTFE insulated pipe to isolate current conduction, and the transparent tank is equipped with an equipotential grounding rod to guide the stray current generated by the BDD electrode to the plant grounding busbar, eliminating stray current interference with pH and ORP probes. The detection error is reduced from the conventional ±5% to ±1.2%, while eliminating the risk of pipeline corrosion and electric shock to personnel caused by electrochemical leakage, and is compatible with the plant's explosion-proof equipotential safety specifications.

[0022] This invention relies on hardware interlocking relays to build pH-ORP timing interlocking logic, strictly following the timing sequence of 50ms data acquisition, acid-base priority adjustment, and 120s delayed residual chlorine addition. This avoids acid-base neutralization caused by the simultaneous addition of dilute sulfuric acid and hypochlorite, and prevents hypochlorite decomposition and the generation of chlorine gas. The delayed unlocking ensures that the acid-base environment of the water body is stable before oxidation disinfection, avoiding excessive residual chlorine corrosion of carbon steel water pipelines in acidic environments, and extending the service life of the main pipeline by more than 3 years.

[0023] The chlorine dosing pump of this invention has a built-in gas phase reflux bypass to balance the internal gas pressure of the hypochlorite storage tank and prevent the pump from running dry due to the volatilization of the agent; the acid dosing pump uses an anti-electromagnetic interference peristaltic pump to resist the electromagnetic interference of the alternating electric field of the BDD electrode and ensure uniform dosing of acidic agents; the 15°-30° inclined dynamic back pressure injection valve can offset the water pressure fluctuation of the main pipeline and prevent water from flowing back into the dosing pipeline. Combined with the PWM stepless pulse signal, it can realize continuous variable dosing of 0-100% flow rate, and the dosing accuracy error is controlled within ±2%.

[0024] This invention incorporates a flow rate proportional limiting dosing logic to dynamically match water quality and flow rate to adjust the dosing frequency, preventing excessive residual chlorine in the effluent under high flow conditions. It sets a minimum safe flow rate interlock threshold of 0.2 m / s, as low flow rates can easily lead to scale buildup in the reactor; the interlock shutdown prevents electrode short-circuiting and burnout. Simultaneously, it integrates audible and visual alarms for low reagent levels and excessive water quality, with all alarm signals uploaded to the host computer, forming a dual on-site and remote early warning system. This reduces the frequency of maintenance and inspections, preventing environmental accidents caused by excessive effluent standards.

[0025] In summary, this device achieves a multi-dimensional dynamic balance of water pollutant degradation, water acid-base balance, reagent energy consumption control, and equipment safe operation through five collaborative designs: feedforward + feedback bidirectional water quality monitoring, UV-electrochemical structural parameter optimization, time-sequenced dosing, electrical safety protection, and all-condition interlocking protection. It is suitable for continuous water conveyance and degradation scenarios in public swimming pools, industrial wastewater, and comprehensive sewage from factories. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the acid dosing assembly structure of the present invention; Figure 3 This is a schematic diagram of the chlorine dosing assembly of the present invention; Figure 4 This is a schematic diagram of the UV-electrochemical synergistic degradation reactor of the present invention; Figure 5 This is a schematic diagram of the bypass water quality detection unit of the present invention; Figure 6 This is a schematic diagram illustrating the working principle of the device of the present invention.

[0027] The diagram is labeled as follows: 1-Intelligent variable frequency pump; 2-Sand filter tank; 3-Inlet water quality sensing unit; 4-Main water pipeline; 5-UV-electrochemical synergistic degradation reactor; 5-1-Polyhedral thermally conductive central axis; 5-2-Quartz isolation sleeve; 5-3-BDD mesh electrode; 5-4-UV-LED chip; 6-Chlorine dosing assembly; 6-1-Hypochlorite storage tank; 6-2-Chlorine dosing pump; 7-Acid dosing assembly; 7-1-Acid dosing pump; 7-2-Dilute sulfuric acid storage tank; 8-Bypass water quality detection unit; 8-1-pH probe; 8-2-ORP probe; 9-Intelligent control unit. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Among the relevant technologies, the two mainstream water disinfection technologies, namely brine electrolysis chlorination and mercury lamp ultraviolet light, have drawbacks such as high operation and maintenance costs, detection distortion, difficulty in degrading trace pollutants, and high environmental pressure. The ultraviolet-electrochemical integrated equipment on the market also has multiple problems such as operating parameters that cannot adapt to water quality and quantity, detection probes that are easily interfered with by electrode stray currents, unreasonable reagent addition sequence that corrodes pipes, and lack of low flow rate interlock protection.

[0030] Reference Figures 1 to 5As shown, this invention discloses an intelligent degradation balance control device for water pollutants, including an intelligent variable frequency pump 1, a sand filter tank 2, a main water supply pipeline 4, an inlet water quality sensing unit 3, an ultraviolet-electrochemical synergistic degradation reactor 5, a bypass water quality detection unit 8, a reagent dosing assembly, and an intelligent control unit 9. The inlet water quality sensing unit 3 is installed downstream of the sand filter tank 2 at the outlet end of the main water supply pipeline 4. The intelligent variable frequency pump 1 is installed upstream of the sand filter tank 2 at the inlet end of the main water supply pipeline 4. The ultraviolet-electrochemical synergistic degradation reactor 5 is arranged in series along the water flow direction of the main water supply pipeline 4 and is located inside the downstream section of the inlet water quality sensing unit 3. The bypass water quality detection unit 8 is equipped with... An independent water quality detection bypass branch pipe is installed, with both ends of the bypass branch pipe connected in parallel to the main water supply pipe 4 downstream of the outlet of the UV-electrochemical synergistic degradation reactor 5, forming a parallel pipeline topology between the bypass branch pipe and the main water supply pipe 4. The reagent dosing assembly is installed in the upstream section of the downstream outlet of the main water supply pipe 4, located downstream of the bypass water quality detection unit 8. The intelligent control unit 9 establishes bidirectional communication links with the inlet water quality sensing unit 3, the UV-electrochemical synergistic degradation reactor 5, and the bypass water quality detection unit 8 via an industrial communication bus. The intelligent control unit 9 has a built-in water quality deviation comparison hardware comparison module and reactor parameter closed-loop control hardware calculation. The module includes a water quality deviation comparison hardware comparison module whose signal output is electrically connected to the signal input of the reactor parameter closed-loop control hardware calculation module. The module has an external water quality detection signal input port for receiving real-time reactor effluent water quality detection signals and preset standard water quality threshold signals. The reactor parameter closed-loop control hardware calculation module has an external control actuator drive output port for outputting reactor operating condition adjustment control signals. The water quality deviation comparison hardware comparison module is used for high-speed hardware acquisition and comparison of influent and bypass effluent water quality data, calculating pollutant degradation deviations, and determining the effluent water quality compliance status. The reactor parameter closed-loop control hardware calculation module is used for… Upon receiving water quality deviation results, the hardware performs real-time calculations and controls the ultraviolet light power, electrode current, reagent dosage, and hydraulic residence time in the pipeline, thereby achieving automatic closed-loop adjustment of reactor operating parameters according to water quality fluctuations. The data reading end of the intelligent control unit 9 is connected to the data output ends of the inlet water quality sensing unit 3 and the bypass water quality detection unit 8, while the parameter control output end is connected to the control input ends of the ultraviolet-electrochemical co-degradation reactor 5 and the reagent dosing component. The controlled parameters of the ultraviolet-electrochemical co-degradation reactor 5 include ultraviolet light power and electrode output current. It can also be used in conjunction with the electric flow regulating valve of the main water supply pipeline 4 to regulate the hydraulic residence time of the water inside the pipeline.

[0031] The detailed structural assembly is as follows: The main water supply pipeline 4 uses a DN200 316L stainless steel pipe with a rated design flow rate Qmax=50m³ / h; the inlet water quality sensing unit 3 is fixed to a straight pipe section 1.2m upstream of the main water supply pipeline 4 via flange clamps, meeting the installation specifications for a straight pipe section with a diameter 10 times that of the flow meter, thus eliminating flow detection errors caused by eddies; the ultraviolet-electrochemical synergistic degradation reactor 5 adopts an embedded structure, directly embedded inside the main water supply pipeline 4, eliminating the need for an external bypass reactor and reducing pipeline head loss; the bypass branch pipe uses a DN25 thin pipe. The bypass pipeline has openings at both ends 0.5m from the reactor outlet, symmetrically connected at the top and bottom, with a parallel diversion ratio fixed at 2% of the main pipeline flow rate. This ensures that the bypass water flow and the main pipeline water quality are completely from the same source and there is no lag in water quality detection. The industrial communication bus uses Modbus-RTU shielded twisted-pair cable with the shielding layer grounded at one end to avoid electromagnetic interference from on-site frequency converters. The main water supply pipeline 4 is equipped with an electric proportional flow regulating valve, installed upstream of the reactor, which adjusts the cross-sectional area of ​​the pipeline to change the hydraulic residence time. The normal residence time control range is 3s~12s.

[0032] The inlet-side pre-sensing enables feedforward acquisition of flow and water quality, unlike traditional post-feedback detection, eliminating the 2-5 second water quality detection lag error; the bypass parallel detection does not occupy the main pipeline's water flow cross-section and will not cause head loss in the main pipeline. Compared with the main pipeline embedded probe solution, the water flow velocity in the bypass is stable, the probe detection environment is not affected by the turbulence in the main pipeline, and the detection accuracy is improved by more than 35%.

[0033] Unlike general PLC software algorithm comparison, the local hardware comparison module has a response latency of ≤10ms, which is much lower than the 50ms latency of software, and can capture instantaneous COD pulse fluctuations. The reactor parameters are synchronously linked with three-dimensional parameters such as UV power, electrode current, and hydraulic residence time. Traditional equipment only controls a single parameter. The three-dimensional linkage scheme can still ensure that the effluent COD is stable and meets the standards when the influent COD fluctuates by ±60%, and the degradation efficiency fluctuation is controlled within 5%.

[0034] The device has a reverse feedback function for abnormal sensing units. When the inlet water sensing sensor fails, the control unit can directly lock the high power output of the reactor to avoid excessive residual chlorine in the water caused by blind high-energy degradation, thus making up for the safety shortcomings of traditional one-way communication and faultless interlocking.

[0035] In a preferred embodiment, the bypass water quality detection unit 8 includes a transparent pool, a tangential bottom-inlet water inlet branch pipe, and a top-outlet water outlet branch pipe. The water inlet branch pipe is equipped with a throttling fine-tuning valve. The water flow first flows into the bypass probe flow pool module through the tangential bottom-inlet water inlet branch pipe, and then is delivered to the bypass water quality detection unit 8. The pH probe 8-1 and the ORP probe 8-2 are inserted into the transparent pool at an angle with their detection tips completely submerged. The probes are electrically connected to the intelligent control unit 9.

[0036] The transparent pool is made of high-transmittance PMMA material, with an inner diameter of 120mm and an effective water depth of 80mm. The tangential bottom-entry water inlet branch pipe is opened at a 45° angle along the inner wall of the pool, rather than vertically, so that the water flow forms a vortex after entering the pool. The throttling fine-tuning valve is a needle-type manual throttling valve with a constant opening of 18%, which reduces the bypass water flow velocity from 1.2m / s in the main pipe to 0.25m / s. The pH probe 8-1 and ORP probe 8-2 are inserted into the pool at a 15° angle. Unlike the vertical insertion installation, the inclined structure allows air bubbles attached to the probe surface to automatically slide off along the inclined surface. The detection end is immersed to a depth of 45mm, avoiding detection errors caused by liquid surface fluctuations and alternating wet and dry conditions. The bypass probe flow pool module is equipped with a 2mm diameter turbulence-disrupting sheet inside to eliminate dead angles in the vortex flow.

[0037] In this embodiment, the water flow in the main pipeline carries tiny electrolytic bubbles. Vertical water intake causes these bubbles to directly adhere to the probe's sensing membrane, resulting in a persistently artificially high ORP data of 100mV~150mV. Tangential swirling flow uses centrifugal force to lift and collect the bubbles to the top of the tank, where they are discharged through the top branch pipe. This reduces the probe failure rate due to bubble adhesion from 92% to 3%. The high-velocity water flow in the main pipeline generates shear turbulence, which disturbs the probe's polarization potential. After throttling, the low-velocity laminar flow environment meets the national standard testing conditions for pH and ORP probes, reducing the repeatability error from ±8% to ±1.2%. The water flow first passes through a flow-through tank to remove fine suspended matter before entering the detection unit, preventing suspended matter from abrading the probe's sensing membrane and extending the probe's lifespan from 12 months to 24 months.

[0038] In a preferred embodiment, the inlet and outlet branch pipes are made of PTFE insulated pipes; a grounding rod is installed at the bottom of the transparent pool, and the grounding rod is connected to the equipotential protection grounding busbar of the factory area.

[0039] The inlet and outlet branch pipes are made of 3mm thick expanded PTFE insulated pipe with a volume resistivity ≥10¹. 6 Ω・cm, completely blocking the conductive path of the water body; the grounding rod is made of titanium alloy, with a diameter of 10mm and a water immersion depth of 50mm. The part that penetrates the PMMA pool body is sealed with a fluororubber waterproof structure; the grounding resistance of the equipotential grounding busbar in the factory area is ≤4Ω, which complies with the GB50343 electrical grounding standard. The grounding busbar and the BDD electrode grounding circuit are independent of each other to avoid common ground interference.

[0040] PTFE insulated pipes block stray current conduction paths: When the BDD mesh electrode is working, it outputs a high-frequency pulse current of 20V~40V. The current can be conducted to the probe through the bypass branch pipe via conductive water. Traditional PVC conductive bypass will cause the probe data to jump 5~8 times per second. The PTFE insulating material can completely block the current coupling between the water and the external stainless steel pipe, eliminating the pulse conduction path.

[0041] Equipotential grounding rods discharge stray charges in water bodies: Without grounding rods, stray static charges will continuously accumulate inside the water body, causing the daily zero-point drift of the ORP probe to be ≥30mV; the grounding rods directly guide the stray charges in the water body into the equipotential ground drain in the plant area, achieving zero potential in the water body, and the daily zero-point drift of the probe is ≤3mV, eliminating the need for daily manual calibration.

[0042] In one preferred embodiment, the reagent dosing assembly includes a hypochlorite storage tank 6-1, a dilute sulfuric acid storage tank 7-2, and corresponding chlorine dosing pump 6-2 and acid dosing pump 7-1, which are independent of each other. Both dosing pumps are electrically connected to the intelligent control unit and receive PWM pulse signals to achieve stepless variable dosing.

[0043] All storage tanks are 100L PE corrosion-resistant sealed tanks. The dilute sulfuric acid is prepared with a mass concentration of 5%, and the sodium hypochlorite has an effective chlorine concentration of 10%. The two dosing pumps are equipped with independent power circuits and independent delivery pipelines, and do not share a common inlet main pipe. The PWM pulse signal frequency range is 1Hz~50Hz, and the pulse duty cycle is infinitely adjustable from 0% to 100%, which is different from the traditional gear-type quantitative dosing and eliminates the step error of dosing.

[0044] The two storage tanks are completely independent and separate: Sodium hypochlorite is a strong oxidizing agent, and dilute sulfuric acid is a strong acid. If they share a storage tank or main pipe, a chemical reaction will occur to generate toxic chlorine gas. The independent storage tank structure completely eliminates the mixing and reaction of the agents in the pipeline and eliminates the safety hazard of toxic gas leakage in the workshop.

[0045] Traditional analog 4-20mA driven dosing pumps have a 0.5% static dosing error and are inaccurate under low flow conditions. This solution uses PWM pulse to directly drive the pump body stepping, with a low flow (≤5L / h) metering error of ≤0.1%, which is suitable for the precise fine-tuning of trace pH and residual chlorine in water.

[0046] Furthermore, the chlorine dosing pump 6-2 is an electromagnetic diaphragm pump with a built-in reflux bypass, and the reflux bypass is connected to the sealed gas phase cavity above the liquid surface of the hypochlorite storage tank 6-1; the acid dosing pump 7-1 is an anti-electromagnetic interference micro-stepping peristaltic pump.

[0047] The chlorine dosing pump 6-2 has a rated flow rate of 20L / h and a built-in 4mm diameter reflux bypass pipe. The reflux line is connected to the gas phase cavity of the storage tank rather than the liquid phase area to avoid secondary dilution of the sodium hypochlorite solution. The acid dosing pump 7-1 is externally wrapped with a copper foil electromagnetic shielding layer with a shielding attenuation of ≥60dB, which can withstand 10kHz high-frequency electromagnetic radiation around the BDD electrode.

[0048] Advantages of the 6-2 chlorine dosing pump with gas phase reflux design: Sodium hypochlorite automatically decomposes and releases chlorine microbubbles at room temperature. The accumulation of these bubbles in the diaphragm pump head can create gas blockage, causing the pump to run dry and stop dosing. The reflux bypass sends the bubbles back to the sealed gas phase cavity of the storage tank, allowing the chlorine to redissolve into the liquid in the tank. This solves the problem of gas blockage and recovers the reagent, reducing the overall consumption of sodium hypochlorite by 7%.

[0049] Advantages of peristaltic pump anti-electromagnetic selection: Ordinary electromagnetic diaphragm pumps are easily interfered with by BDD high-frequency electric fields, resulting in problems such as random pulse dosing of acidic agents; micro-stepping peristaltic pumps rely on mechanical rollers to squeeze the tubing to deliver the liquid medicine, without electromagnetic induction coils, and are not affected by alternating electric fields, ensuring zero error in the timing of acidic agent dosing.

[0050] Furthermore, dynamic back pressure injection valves are respectively installed at the outlet ends of the two dosing pumps; the injection valves are connected to the main water supply pipeline 4 at an angle of 15°~30°.

[0051] The optimal on-site angle is 22°, and the dynamic back pressure injection valve is set with a back pressure of 0.12MPa, which is 0.08MPa higher than the normal operating static pressure of the main pipeline, to prevent water backflow into the dosing pipeline; the injection valve outlet extends to the geometric center of 1 / 2 of the main pipeline diameter.

[0052] Traditional one-way check valves are prone to crystallization and jamming by chemical solutions, and backflow of water corrodes the diaphragm inside the dosing pump. Dynamic back pressure structures rely on fluid pressure for self-closing, reducing the crystallization jamming failure rate by 95% and extending the pump maintenance cycle to 18 months. Advantages of 15°~30° oblique center injection: Vertical injection into the pipe wall causes high-concentration solutions to flow along the low-speed zone of the pipe wall boundary layer, resulting in pitting corrosion on 316L pipe walls after only 3 months of use; oblique injection into the high-speed mainstream zone in the center of the pipe allows for complete turbulent mixing of the solution throughout the entire flow within 1.2 seconds, reducing the localized chemical contact concentration on the pipe wall by 92% and completely eliminating localized corrosion.

[0053] As a preferred implementation, the intelligent control unit has a built-in pH-ORP hardware and software interlock structure based on hardware interlock relays; the control sequence is as follows: 50ms millisecond-level water quality flow data acquisition → pH exceeding the standard, priority start of acid dosing pump 7-1, lockout of chlorine dosing pump 6-2 → pH reaching the standard, after a 120s delay, unlock chlorine dosing pump 6-2, and add hypochlorite in combination with real-time flow.

[0054] The hardware interlock uses an independent DC relay, rather than a single software logic interlock, with a relay contact response delay of ≤2ms; a 120s delay matches the mixing delay of the water pipeline, adapting to the hydraulic mixing time corresponding to a 12m axial mixing distance of the chemical solution in a DN200 pipeline; and a 50ms acquisition cycle simultaneously acquires three sets of data: pH, ORP, and instantaneous flow rate.

[0055] Hardware relay interlocking provides physical fallback protection: Traditional software interlocking carries the risk of PLC crashes and program malfunctions. Hardware relays can physically cut off the power supply circuit of the chlorine dosing pump 6-2, achieving power-off level interlocking with a near-zero failure probability, completely resolving the chlorine lockout issue caused by indiscriminate chlorination in high pH conditions. In high pH environments (pH > 7.6), hypochlorite's bactericidal efficiency is only 12% of that of hypochlorous acid. Indiscriminate chlorination leads to ineffective accumulation of residual chlorine. This timing control ensures that chlorination agents are added only within the pH range that meets the standard, reducing overall agent consumption by 22%.

[0056] After the acid is added, there is a radial mixing lag in the pH of the water. The instantaneous pH detection by the probe does not mean that the water quality of the entire pipeline meets the standard. The chlorination circuit is unlocked only after the entire water body has been mixed for a period of time to avoid continuous chlorine lock-in in local areas with excessive pH. The residual chlorine stability of the effluent is improved by 40%.

[0057] As a preferred implementation, the influent water quality sensing unit 3 integrates COD, turbidity, and flow sensors. The flow sensor signal is directly connected to the high-speed IO port of the intelligent control unit, thereby realizing the flow feedforward adaptive regulation capability. The power of the ultraviolet light source, the pulse current of the bipolar BDD electrode, and the pipeline flow can be adjusted according to the influent flow to change the hydraulic residence time of the reactor.

[0058] The flow sensor uses an electromagnetic flow meter, which outputs a high-speed differential pulse signal and is directly connected to the 1MHz high-speed IO port of the control unit, unlike the low-speed port of ordinary 485 communication; the BDD electrode uses bipolar pulse power supply with a pulse frequency of 12kHz; the ultraviolet light source is a multi-band UV-LED array with an adjustable power range of 20%~100%.

[0059] Ordinary communication ports can transmit flow data with a latency of up to 200ms, which cannot cope with sudden changes in flow. High-speed IO ports have a signal latency of ≤1ms, which can synchronously adjust reactor operating parameters at the moment of flow change, avoiding shortened hydraulic residence time and incomplete degradation of pollutants when the flow increases suddenly. The COD exceedance rate of the effluent has been reduced from 11% to 0.8%.

[0060] Traditional equipment only adjusts the UV power, resulting in excessive energy consumption of the electrodes when the flow rate decreases. This system simultaneously reduces the electrode current and UV power and extends the hydraulic residence time, reducing the overall energy consumption of the reactor by 48% under low flow conditions, while avoiding electrode dry burning damage caused by low flow rate.

[0061] Furthermore, the intelligent control unit has a built-in flow ratio limiting dosing logic, which can adjust the dosing frequency according to the influent water quality and real-time flow rate; it sets a minimum safe flow velocity of 0.2 m / s on the inner side of the main water supply pipeline 4, and interlocks to stop the machine and uploads an alarm signal to the host computer when the flow velocity does not meet the standard; it also integrates low liquid level of the agent, audible and visual alarm for water quality exceeding the limit and shutdown linkage function.

[0062] A flow velocity of 0.2 m / s corresponds to 20% of the system's rated flow rate Qmax; the proportional limiting coefficient matches the system's segmented control logic: 80%Qmax≤Q≤100%Qmax, coefficient is 1.0; 50%Qmax≤Q<80%Qmax, coefficient is 0.7; 20%Qmax≤Q<50%Qmax, coefficient is 0.4; the audible and visual alarm loudness is 85dB, and within 3 seconds after the alarm is triggered, the reactor power is cut off and the dosing pump stops simultaneously.

[0063] This logic solves the problem of localized chemical enrichment under low flow conditions with a fixed dosing frequency. It simultaneously reduces the dosing frequency at low flow rates to avoid excessive residual chlorine in the pipeline, which can prevent corrosion of the pipeline lining. This can save 26% of the chemical procurement cost annually.

[0064] When the flow velocity in the pipeline is less than 0.2 m / s, the water flow inside the reactor tends to stagnate, and the local heat from the ultraviolet light cannot be dissipated in time, increasing the UV-LED light decay rate by 5 times. Interlocked shutdown can extend the lifespan of the LED light source from 3 years to 6 years, while avoiding the generation of toxic oxidation byproducts in stagnant water areas.

[0065] The solution addresses the shortcomings of traditional equipment that only alarms but does not shut down: continuous idling with low reagent levels can burn out the pump head, and continuous operation with excessive water quality can lead to substandard effluent. The coordinated shutdown provides dual safety protection for both the equipment itself and the effluent quality.

[0066] In one preferred embodiment, the reactor is arranged sequentially along the water flow direction with an ultraviolet lamp group, a BDD mesh electrode array, and a porous turbulence rectifier plate with an opening ratio of 45%~50%; the axial distance between the ultraviolet lamp group and the BDD mesh electrode array is 80mm~120mm, and the mesh number of the BDD mesh electrode array is 20 mesh.

[0067] On-site selection prioritizes an axial spacing of 90mm and a rectifier plate opening rate of 48%; 20-mesh BDD titanium-based mesh electrodes with a wire diameter of 0.5mm; the rectifier plate is made of titanium alloy, the same material as the electrode substrate, to avoid electrochemical corrosion caused by contact between dissimilar metals. An axial spacing of 80mm~120mm is chosen to match the survival time of hydroxyl radicals: hydroxyl radicals survive for only 40μs~60μs; excessive spacing will cause radical decay and failure, while insufficient spacing will result in UV light being blocked by the electrodes; a 90mm spacing ensures that intermediate products generated by UV photolysis directly enter the electrode electric field, improving photoelectric synergistic oxidation efficiency by 53%. Electrode mesh selection criteria: excessive mesh size leads to high water flow resistance and excessive pipe head loss; insufficient mesh size results in blind spots in the electric field coverage; a 20-mesh electrode can achieve full electric field coverage across the entire pipe cross-section, eliminating 100% of blind spots in microbial disinfection. The rectifier structure with an opening ratio of 45%~50% can eliminate dead corners and eddies inside the reactor, avoid repeated accumulation of pollutants in dead corners, and reduce the fluctuation range of turbidity in the reactor effluent by 60%.

[0068] To verify the technical advantages of the device in this embodiment, the device structure, working principle and supporting control logic are fully described in conjunction with the accompanying drawings.

[0069] like Figures 1-6 As shown, the device operates according to a three-level closed-loop logic of "dynamic sensing - deep purification - water quality closed-loop balance". After the raw water enters the main water supply pipeline 4, the influent water quality sensing unit collects the instantaneous influent flow rate in real time and uploads the flow data to the intelligent control unit. The intelligent control unit matches the operating power of the UV-electrochemical synergistic reactor as needed to achieve energy saving and consumption reduction in low flow conditions. The water then enters the core UV-electrochemical synergistic degradation reactor, where it completes dual purification under the synergistic effect of UV-LED ultraviolet light and boron-doped diamond (BDD) high-voltage electric field: on the one hand, it relies on specific wavelengths of ultraviolet light to directly destroy the nucleic acid structure of microorganisms, thereby inactivating pathogenic bacteria; on the other hand, it relies on the high-voltage electric field to electrolyze the water, generating high concentrations of hydroxyl radicals in situ. With the help of the photoelectric synergistic multiplication oxidation effect, it thoroughly degrades trace organic pollutants in the water and deeply inactivates pathogenic microorganisms.

[0070] Water purified by photoelectric synergy flows through bypass water quality monitoring unit 8. The monitoring probe collects pH and ORP data and transmits it back to the intelligent control unit. The intelligent control unit, combined with real-time water quality parameters, precisely regulates the dosing of trace amounts of acidic, alkaline, and chlorine-containing agents by the end-point dosing component. This stabilizes the water pH within the standard swimming pool range and maintains a safe residual chlorine level, preventing secondary microbial contamination. This device specifically addresses several pain points in traditional swimming pool water treatment: online water quality probes are susceptible to electromagnetic interference from the electrochemical unit; chemical agent dosing is delayed and unpredictable; and single disinfection processes cannot adapt to large fluctuations in influent flow. Ultimately, it achieves water treatment goals including electromagnetic interference-resistant water quality monitoring, precise closed-loop agent dosing, and dynamic self-adaptation of the photoelectric synergistic oxidation process.

[0071] refer to Figure 4 The UV-electrochemical synergistic degradation reactor 5 comprises four core components: a quartz isolation sleeve, a polyhedral thermally conductive central axis, UV-LED chips, and a BDD mesh electrode array. A polyhedral thermally conductive central axis is installed through the axis of the quartz isolation sleeve. In this embodiment, a hexagonal prism aluminum-based thermally conductive column is preferred as the central axis substrate, balancing thermal conductivity and structural stability. 255nm, 265nm, and 275nm three-band UV-LED chips are alternately bonded to the outer surface of the hexagonal prism aluminum-based thermally conductive column, covering the two core UV action bands for microbial nucleic acid destruction and trace organic matter decomposition.

[0072] A high-transmittance quartz insulating sleeve is fitted around the hexagonal aluminum-based heat-conducting column, and a BDD mesh electrode array is arranged around the outside of the quartz insulating sleeve. When water flows through the reactor along the main pipeline, the water flows closely against the outer wall of the quartz insulating sleeve, forming an in-situ water-cooling heat dissipation circuit. This can quickly remove the heat accumulated by the continuous operation of the UV-LED chip, effectively delaying the light decay of the ultraviolet light source and extending the life of the lamp. At the electrical control level, the intelligent control unit synchronously outputs pulse width modulation (PWM) signals to the UV-LED light source and the BDD mesh electrode array, so that the microsecond-level flicker timing of the UV-LED is perfectly matched with the high-frequency pulse current timing of the BDD electrode, achieving precise coupling of the light field and electric field in the time dimension. Timing synchronization can significantly improve the generation efficiency of high-energy hydroxyl radicals (・OH) in the water, enhance the instantaneous oxidation capacity, and significantly improve the degradation rate of trace pollutants and the elimination rate of pathogenic microorganisms.

[0073] The bypass water quality detection unit 8 is independently installed on the branch line of the main water supply pipeline 4, without occupying the water flow section of the main water supply pipeline 4. The bypass water quality detection unit 8 consists of a transparent tank, an insulated non-metallic inlet branch pipe, and an insulated non-metallic outlet branch pipe. The inlet branch pipe enters the tank from the bottom, and the outlet branch pipe exits from the top, forming a stable water flow pattern of bottom inlet and top outlet. This automatically captures and discharges dissolved air bubbles in the water, preventing air bubbles from adhering to the sensing end faces of the pH probe 8-1 and ORP probe 8-2, which would cause detection distortion. The pH probe 8-1 and ORP probe 8-2 are installed at an angle inside the transparent tank. The angled installation further avoids fluctuations in the detection values ​​caused by water flow turbulence. A liquid grounding rod is installed through the bottom of the tank, with the bottom end of the grounding rod completely submerged in the bypass water, and the top end connected to the plant's equipotential grounding drain via an external grounding wire. When the BDD mesh electrode array is working, it conducts high-frequency stray pulse charges through the water body. These charges are the main cause of the numerical jumps in polarization-sensitive pH and ORP probes. The liquid grounding rod can directly discharge the stray charges in the water body to the ground, eliminating the electromagnetic interference of the electrochemical unit to the water quality probe from the dual dimensions of water body conductive isolation and electrical equipotential grounding.

[0074] The terminal dosing assembly is divided into a chlorine dosing assembly 6 and an acid dosing assembly 7, including a storage tank, an electromagnetically driven diaphragm chlorine dosing pump 6-2 with an automatic venting pump head, and a micro-stepping peristaltic acid dosing pump 7-1. To address the issue of chlorine gas easily decomposing and causing gas flow blockage at the pump head during the storage and transportation of sodium hypochlorite solution, a micro-return bypass is added to the side of the venting pump head of the electromagnetically driven diaphragm chlorine dosing pump 6-2. The other end of the bypass connects to the gas phase cavity inside the storage tank; chlorine gas bubbles accumulated inside the pump head can automatically flow back to the storage tank through the bypass, eliminating dosing interruptions and inaccurate dosage caused by gas resistance.

[0075] Both sets of dosing pump outlet pipelines are equipped with dynamic back pressure injection valves. These valves penetrate the main pipeline wall, ensuring the injection point extends precisely to the geometric center of the main pipeline's cross-section. The center of the main pipeline's cross-section is the peak water velocity region. After injection, the high-speed water flow instantly completes turbulent mixing, preventing the solution from accumulating along the low-velocity areas of the pipe wall. This addresses the root cause of pipe corrosion and localized excessive solution concentrations caused by long-term adhesion of high-concentration sodium hypochlorite and dilute acid solutions to the pipe wall, while simultaneously improving the uniformity of solution mixing in the water.

[0076] refer to Figure 5 pH Priority-ORP Lag Interlock Control Logic Explanation: Under high pH conditions in swimming pool water, bicarbonate in the water will produce a chlorine lock-in effect, which directly manifests as a falsely low ORP detection value. If the system adds chlorine agents only based on distorted ORP data, problems such as blindly adding excessive chlorine, a large amount of waste of agents, and excessive levels of irritating disinfection byproducts in the water will occur.

[0077] refer to Figure 6 To address this pain point, the intelligent control unit incorporates a pH-priority, ORP-hysteresis interlock control logic. The specific execution process is as follows: The control unit synchronously collects real-time pH and ORP data from the water, setting the ideal pH control range for the pool water to 7.2~7.6. When the real-time pH > 7.6, the peristaltic acid dosing pump 7-1 is immediately activated to lower the water pH, simultaneously triggering a hardware interlock command: cutting off the PWM signal receiving permission of the electromagnetically driven diaphragm chlorine dosing pump 6-2, blocking all low ORP alarm signals, and not performing any chlorination actions. When the pH returns to the acceptable range of 7.2~7.6, acid dosing stops, and a 120s mixing hysteresis timer is simultaneously activated. This delay ensures that the acid and alkali solutions are fully mixed throughout the water in the entire pipeline, eliminating local pH detection deviations. After the delay ends, the interlock command is released, and the stable, true ORP value is read. Only when the true ORP is below the 650mV safety threshold is the chlorine dosing pump 6-2 allowed to start quantitative chlorine replenishment. This control logic can completely avoid problems such as excessive chlorination, water quality deterioration, and excessive chemical consumption caused by chlorine lockout.

[0078] Flow feedforward dynamic adaptive control logic: The intelligent control unit is equipped with deep flow feedforward dynamic adaptive logic. Based on the system's rated maximum design flow rate Qmax, and according to the real-time flow rate Q uploaded by the influent water quality sensing unit, it adjusts the power of the photoelectric reactor and the frequency of reagent dosing in stages. The specific stages are as follows: 80%Qmax≤Q≤100%Qmax: The system operates at full load, the UV-LED light source and BDD electrode maintain 100% PWM full power output, the reagent dosing frequency coefficient is 1.0, and the reagent is added according to the rated dosage; 50%Qmax≤Q<80%Qmax: The system is under high load. During operation, the duty cycle of the PWM pulses of the UV-LED and BDD electrodes is reduced to 70%, and the reagent dosing frequency is simultaneously multiplied by a proportional coefficient of 0.7 to reduce the operating frequency of the dosing pump. When the system operates at low load (20%Qmax≤Q<50%Qmax), the duty cycle of the PWM pulses of the UV-LED and BDD electrodes is reduced to 40%, and the reagent dosing frequency coefficient is reduced to 0.4 to match the low-flow pollutant load, achieving savings in both reagent and energy consumption. When Q<20%Qmax, a dangerous low-flow-rate condition is identified in the main pipeline, and the power supply to the UV-electrochemical co-reactor is immediately cut off, while all dosing components are locked in place to stop operation. This interlocking logic prevents insufficient flow in the reactor's water-cooling circuit at low flow rates, which could lead to UV-LED burnout and damage, while also preventing poor water flow from causing localized reagent accumulation and abnormal water temperature increases.

[0079] The above are merely preferred embodiments of the present invention and do not limit the scope of patent protection of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, shall also be included within the scope of protection of the present invention.

Claims

1. A smart water pollutant degradation balance control device, comprising a main water transmission pipeline; characterized in that, It also includes an influent water quality sensing unit, an ultraviolet-electrochemical synergistic degradation reactor, a bypass water quality detection unit, a reagent dosing component, and an intelligent control unit; The water quality sensing unit is installed in the upstream inlet section of the main water transmission pipeline. The UV-electrochemical synergistic degradation reactor is installed inside the water supply pipeline downstream of the inlet water quality sensing unit. UV lamps, BDD mesh electrode array, and porous turbulence rectifier plate with an opening ratio of 45%-50% are arranged sequentially along the water flow direction of the main water supply pipeline. The bypass water quality detection unit is equipped with an independent water quality detection bypass branch pipe. Both ends of the bypass branch pipe are respectively connected across and in parallel to the main water supply pipeline wall downstream of the outlet end face of the UV-electrochemical synergistic degradation reactor. The bypass branch pipe and the main water supply pipeline form a parallel pipeline topology. The reagent dosing assembly is installed in the downstream outlet section of the main water pipeline, located downstream of the bypass water quality detection unit. The intelligent control unit establishes a two-way communication link with the influent water quality sensing unit, the ultraviolet-electrochemical synergistic degradation reactor, and the bypass water quality detection unit. The data reading end of the intelligent control unit is connected to the data output end of the influent water quality sensing unit and the bypass water quality detection unit, and the parameter control output end of the intelligent control unit is connected to the control input end of the ultraviolet-electrochemical synergistic degradation reactor and the reagent dosing component. The intelligent control unit incorporates a water quality deviation comparison hardware module and a reactor parameter closed-loop control hardware calculation module. The water quality deviation comparison hardware module receives multi-dimensional raw water quality data synchronously collected by the influent water quality sensing unit and the bypass water quality detection unit in real time. It performs a comparison calculation of the difference between the baseline water quality threshold and the real-time detected water quality, outputs a standardized water quality deviation signal, and stably transmits it to the reactor parameter closed-loop control hardware calculation module. The reactor parameter closed-loop control hardware calculation module interfaces with the water quality deviation signal to iteratively solve the control quantity. Combined with the rated operating boundary constraints of the reactor parameter closed-loop control hardware calculation module, it generates equipment control commands adapted to the current water quality conditions in real time and issues them to the UV-electrochemical co-degradation reactor and the reagent dosing component to complete closed-loop regulation.

2. The apparatus according to claim 1, characterized in that, The bypass water quality detection unit includes a transparent tank, a tangential bottom-inlet water inlet branch pipe, a top-outlet water outlet branch pipe, a pH probe, and an ORP probe. The tangential bottom-inlet water inlet branch pipe is equipped with a throttling fine adjustment valve. One end of the tangential bottom-inlet water inlet branch pipe is connected to the bypass branch pipe and the other end is connected to the bottom of the transparent pool. One end of the top-outlet water outlet branch pipe is connected to the top of the transparent pool and the other end flows back to the main water supply pipe. Water flows tangentially from the bottom into the transparent pool through the bypass branch pipe, via the throttling fine-tuning valve and the tangential bottom-inlet branch pipe, and then flows out through the top-outlet branch pipe back to the main water supply pipeline. The pH probe and ORP probe are obliquely inserted into the side wall of the transparent pool. The signal output terminals of the pH probe and ORP probe are electrically connected to the analog quantity acquisition port of the intelligent control unit through shielded signal lines.

3. The intelligent degradation balance control device for water pollutants according to claim 2, characterized in that, The inlet and outlet branch pipes are made of PTFE insulated pipes. A grounding rod is installed at the bottom of the transparent pool, and the grounding rod is connected to the equipotential protection grounding busbar of the factory area.

4. The apparatus according to claim 1, characterized in that, The reagent dosing assembly includes a hypochlorite storage tank, a dilute sulfuric acid storage tank, and corresponding chlorine dosing pumps and acid dosing pumps, which are independent of each other. Both dosing pumps are electrically connected to the intelligent control unit, receiving PWM pulse signals to achieve stepless variable dosing.

5. The apparatus according to claim 4, characterized in that, The chlorine dosing pump is an electromagnetic diaphragm pump with a built-in reflux bypass, which connects to a sealed gas phase cavity above the liquid surface of the hypochlorite storage tank; the acid dosing pump is an electromagnetic interference-resistant micro-stepping peristaltic pump.

6. The apparatus according to claim 4, characterized in that, Dynamic back pressure injection valves are respectively installed at the liquid outlet of the two dosing pumps; The injection valve is connected to the main water supply pipeline at an angle of 15°-30°.

7. The apparatus according to claim 1, characterized in that, The intelligent control unit incorporates a pH-ORP hardware and software interlock structure based on hardware interlock relays. The control sequence is as follows: 50ms millisecond-level water quality and flow data acquisition → if pH exceeds the standard, acid dosing pump is started first and chlorine dosing pump is locked → after pH reaches the standard, chlorine dosing pump is unlocked after a 120s delay, and hypochlorite is added according to the flow rate.

8. The apparatus according to claim 1, characterized in that, The inlet water quality sensing unit integrates COD, turbidity, and flow sensors; The flow sensor signal is directly connected to the high-speed I / O port of the intelligent control unit to enable flow feedforward adaptive regulation capability. The hydraulic residence time of the reactor is changed by adjusting the power of the ultraviolet light source, the pulse current of the bipolar BDD electrode, and the pipeline flow rate according to the influent flow rate.

9. The apparatus according to claim 8, characterized in that, The intelligent control unit has a built-in flow ratio limiting dosing logic that adjusts the dosing frequency according to the influent water quality and real-time flow. The system is designed to set a minimum safe flow velocity of 0.2 m / s inside the main water supply pipeline. If the flow velocity is not met, the system will be interlocked to stop and an alarm signal will be sent to the host computer. The system also integrates audible and visual alarms for low reagent level and excessive water quality, as well as shutdown linkage functions.

10. The apparatus according to claim 1, characterized in that, The axial distance between the ultraviolet lamp assembly and the BDD mesh electrode array is 80-120mm, and the mesh size of the BDD mesh electrode array is 20 mesh.

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