Method and system for preparing ultra-micro ionized water based on dynamic feedback and fluctuation suppression

Abstract

The application belongs to the technical field of ultra-micro ion water preparation, and particularly relates to an ultra-micro ion water preparation method and system based on dynamic feedback and fluctuation suppression. The method first collects the water inlet conductivity, water inlet temperature, water inlet flow rate and water inlet pressure of raw water, and adjusts the inlet flow rate and input current of the first electrolysis unit according to the deviation weighted result; then the water after the first electrolysis is introduced into the buffer mixing cavity for concentration homogenization, and then enters the second electrolysis unit for stage power supply processing, and the dynamic suppression is combined with the inert electrode temperature rise rate, gas evolution rate and electrode load; then the ion selection membrane shunt assembly is used for multi-channel shunting, and the closed loop processing path is constructed through the backflow channel and the lead-out buffer cavity. The scheme can reduce the influence of raw water fluctuation and electrolysis disturbance on the end water state, and improve the continuity and stability of the ultra-micro ion water preparation process.

Description

Technical Field

[0001] This invention belongs to the technical field of ultrafine ionized water preparation, specifically relating to an ultrafine ionized water preparation method and system based on dynamic feedback and fluctuation suppression. Background Technology

[0002] Ultrafine ionized water typically refers to functional water bodies obtained through specific water treatment processes, exhibiting higher control precision in particle size distribution, ion activity, dispersion stability, or interfacial interaction characteristics. It has significant application value in fields such as agricultural planting, food processing, environmental purification, medical cleaning, material dispersion, and industrial auxiliary treatment. With the increasing demand for refined processing and high-quality water, traditionally treated water can no longer fully meet the requirements for microscale mass transfer, surface wetting, contaminant removal, and activity maintenance. Therefore, the preparation, stable maintenance, and systematic output control of ultrafine ionized water have gradually become important research directions in the field of functional water preparation.

[0003] In existing technologies, the preparation routes for ultrafine ionized water or similar functional water mainly include mechanical shearing, pressurized jetting, electrolytic activation, gas-liquid mixing and dispersion, membrane filtration coupling, and multi-stage purification combined with other methods. Some schemes reduce the particle or cluster size in the liquid phase through high-speed swirling, cavitation fragmentation, or high-pressure impact; some schemes improve water activity by introducing electric fields, electrode reactions, or ion excitation; and some schemes combine filtration purification, mineralization adjustment, circulation mixing, and terminal output to improve the performance of the treated water.

[0004] However, existing technologies generally focus on single processing steps, resulting in problems such as loosely connected process chains, insufficient stability of the ionization process, low precision in microscale structure control, large fluctuations in output quality during continuous operation, insufficient system integration, and limited adaptability to different application scenarios. Especially during equipment implementation, issues such as high energy consumption, frequent maintenance, complex parameter coupling, and unsatisfactory water preservation effects often arise, thus limiting the further promotion and application of these technologies.

[0005] Based on the above, it is necessary to propose a more structurally sound, more stable, and more controllable method and system for preparing ultrafine ionized water in order to meet the ever-increasing application demands for functionalized water. Summary of the Invention

[0006] To address the above problems, the present invention aims to propose a method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression, comprising the following steps: S1. Collect the inlet conductivity, inlet temperature, inlet flow rate and inlet pressure of the raw water, compare them with the corresponding benchmark values ​​to form an inlet deviation group, and adjust the inlet flow rate and input current of the first-stage electrolysis unit according to the weighted result of each deviation to keep the raw water within the preset inlet fluctuation range. S2. The water after primary electrolysis is introduced into the buffer mixing chamber in a tangential manner, so that the water forms a swirling flow. The pH value, conductivity, total dissolved solids concentration and residence time are collected. The inlet throttling opening and outlet opening are adjusted in a linkage manner so that the water is output after concentration homogenization within the preset residence time window. S3. The water after concentration homogenization is introduced into the secondary electrolysis unit, and the high peak current stage, low peak current stage and power-off release stage are applied in sequence. The polarity switching is set from the end of the low peak current stage to the beginning of the power-off release stage. At the same time, the inert electrode temperature rise rate, gas evolution rate and electrode load are monitored. When the joint monitoring results reach the limit conditions, the high peak current is reduced, the power-off release time is extended and the next polarity switching time is postponed. S4. Introduce the water after secondary electrolysis into the ion-selective membrane splitting module. Determine the membrane splitting state based on the parameter difference between the inlet and outlet sides, and switch to the product water side channel, bypass steady flow channel or return channel respectively. S5. The water that has entered the return channel is sent back to the inlet of the buffer mixing chamber and merged with the water after the first electrolysis to perform concentration homogenization and second electrolysis treatment again. S6. The water output from the water production channel is introduced into the outlet buffer chamber for end-of-pipe buffering and the pH value, conductivity and total dissolved solids concentration are detected again. Water that meets the requirements of the terminal water production range is output as ultra-fine ion water, and water that does not meet the requirements of the terminal water production range is switched to the return channel.

[0007] As a preferred technical solution, in step S1, the weighted result is obtained by multiplying the inlet water conductivity deviation, inlet water temperature deviation, inlet water flow rate deviation and inlet water pressure deviation by their respective weights and then superimposing them. A first adjustment zone and a second adjustment zone are provided. When the weighted result falls into the first adjustment zone, only the inlet flow rate of the first-stage electrolysis unit is adjusted. When the weighted result falls into the second adjustment zone, both the inlet flow rate of the first-stage electrolysis unit and the input current of the first-stage electrolysis unit are adjusted.

[0008] As a preferred technical solution, in step S2, the buffer mixing chamber includes a tangential liquid inlet and flow guide baffles spaced apart along the circumference of the chamber. After the water from the first-stage electrolysis enters the buffer mixing chamber, it forms a cyclic flow along the direction of the chamber wall and passes through at least one complete cyclic path before being output to the second-stage electrolysis unit.

[0009] As a preferred technical solution, the inlet throttling opening and the outlet opening in step S2 are adjusted in a reverse linkage manner: T1: When the rate of change of pH and the rate of change of conductivity in the buffer mixing chamber are both higher than the corresponding limits, reduce the outlet opening and the inlet throttling opening to prolong the residence time of water in the buffer mixing chamber. T2: When the rate of change of pH and the rate of change of conductivity in the buffer mixing chamber are both lower than the corresponding limits, increase the outlet opening and increase the inlet throttling opening.

[0010] As a preferred technical solution, in step S3, the high-peak energizing stage, the low-peak energizing stage, and the power-off release stage constitute a pulse electrolysis cycle. The peak current of the high-peak energizing stage is greater than the peak current of the low-peak energizing stage, and the polarity switching is not set in the high-peak energizing stage, but is set after the low-peak energizing stage ends and before the power-off release stage begins.

[0011] As a preferred technical solution, in step S3, the condition that the joint monitoring results reach the limit value means that at least two of the inert electrode temperature rise rate, gas evolution rate and electrode load simultaneously exceed their respective limits. Under this condition, the peak current is reduced, the power-off release time is extended and the next polarity switching time is delayed.

[0012] As a preferred technical solution, in step S4, the ion-selective membrane diversion assembly includes a product water side channel, a bypass stabilizing channel, a return channel, and an ion-selective membrane disposed between the inlet side channel and the product water side channel. The bypass stabilizing channel is connected to the outlet buffer chamber, and the return channel is connected to the inlet of the buffer mixing chamber.

[0013] As a preferred technical solution, in step S4, the parameter difference is formed by the difference between the corresponding parameters on the import side and the export side, and the state is determined by a continuous sampling method. When the parameter difference is within the preset second range, the system switches to the bypass current channel. When the parameter difference is within the preset third range for multiple consecutive sampling cycles, the system switches to the return channel.

[0014] As a preferred technical solution, in step S5, the outlet of the reflux channel is set on the confluence pipe section between the outlet of the primary electrolysis unit and the inlet of the buffer mixing chamber, so that the reflux water is mixed with the water after primary electrolysis before entering the buffer mixing chamber.

[0015] As a preferred technical solution, in step S6, the output buffer cavity is a buffer cavity with an adjustable effective volume, and the effective volume is adjusted according to the number of switching times of the return channel within a preset statistical period. When the number of switching increases, the effective volume of the output buffer cavity is increased and the end dwell time is extended; When the number of switching cycles decreases, the effective volume of the output buffer cavity is reduced and the end dwell time is shortened.

[0016] This invention also provides an ultrafine ionized water preparation system based on dynamic feedback and fluctuation suppression, for implementing the method, comprising: The raw water acquisition module is used to collect data on the conductivity, inlet temperature, inlet flow rate, and inlet pressure of the raw water. Primary electrolysis module; A buffer mixing module is provided on the output side of the primary electrolysis module and includes a tangential liquid inlet, a flow guide baffle, an inlet regulating valve, and an outlet regulating valve. A secondary electrolysis module is disposed on the output side of the buffer mixing module; A membrane diversion module is located on the output side of the secondary electrolysis module and includes an ion-selective membrane, a product water side channel, a bypass stabilization channel, and a reflux channel. The reflux module is connected to the reflux channel and the inlet of the buffer mixing module; The output buffer module is connected to the water production side channel and is used to perform end-stage buffering of the output water. Water that meets the terminal water production range is output as ultra-fine ion water, and water that does not meet the terminal water production range is switched to the return channel.

[0017] The control module, electrically connected to other modules, is used for: Based on the inlet water conductivity, inlet water temperature, inlet water flow rate, and inlet water pressure relative to the corresponding reference values, the inlet flow rate and input current of the first-stage electrolysis module are adjusted. The inlet and outlet regulating valves are adjusted in conjunction with the pH value, conductivity, total dissolved solids concentration and residence time collected within the buffer mixing module. Switch the corresponding channel based on the parameter difference between the inlet and outlet sides of the membrane shunt module; The high-peak power-on stage, low-peak power-on stage, and power-off release stage are sequentially applied to the secondary electrolysis module.

[0018] As a preferred technical solution, in the buffer mixing module, The flow guide baffles are spaced apart along the circumferential direction of the cavity of the buffer mixing module; The inlet regulating valve and the outlet regulating valve are respectively installed on the liquid inlet side and the liquid outlet side of the buffer mixing module; The control module adjusts the inlet and outlet regulating valves in reverse linkage according to the rate of change of pH and conductivity within the buffer mixing module, thereby adjusting the residence time of water within the buffer mixing module.

[0019] As a preferred technical solution, the secondary electrolysis module includes: Inert electrode, temperature rise detection unit, gas evolution detection unit, and load detection unit; The control module is connected to the temperature rise detection unit, the gas evolution detection unit, and the load detection unit, respectively. When at least two of the inert electrode temperature rise rate, gas evolution rate, and electrode load reach their respective limits, the control module synchronously reduces the current during the peak power-on phase, extends the duration of the power-off release phase, and postpones the next polarity switching time.

[0020] As a preferred technical solution, the export buffer module is a buffer cavity with an adjustable effective volume, and the control module adjusts the effective volume of the export buffer module according to the number of times the return channel switches within a preset statistical period.

[0021] The beneficial effects of this invention are as follows: This invention does not merely set electrolysis parameters at a single point. Instead, it first aggregates the deviations in the influent conductivity, temperature, flow rate, and pressure of the raw water, and then adjusts the inlet flow rate and input current of the first-stage electrolysis unit based on the weighted results. This reduces fluctuations in the influent before it enters the main treatment stage. Consequently, raw water disturbances are no longer directly transmitted to subsequent electrolysis and diversion stages, reducing the probability of abrupt changes in the product water state due to variations in raw water conditions and improving the stability of the entire preparation process.

[0022] This invention incorporates a buffer mixing chamber after the primary electrolysis stage. Through tangential liquid inlet, flow guide baffles, and coordinated adjustment of the inlet and outlet throttling openings, the water undergoes concentration homogenization within a preset residence time window before entering the secondary electrolysis unit. This structure does not simply increase the intermediate storage volume; rather, it combines flow path adjustment with residence time control. This mitigates local concentration deviations and instantaneous parameter fluctuations before entering the secondary electrolysis stage, thereby reducing the sensitivity of subsequent treatment to transient fluctuations in the preceding stage and improving the continuity of the treatment process.

[0023] This invention constructs a graded digestion path for abnormal states by controlling the staged energization and polarity switching in the secondary electrolysis stage, the multi-channel state switching of the ion-selective membrane diversion component, and the closed-loop coordination between the reflux channel and the outlet buffer chamber. For water deviating from the final product water range, it is not directly discharged or mixed into the finished product. Instead, based on the membrane diversion status and end-of-pipe detection results, it enters either the bypass stabilization path or the reflux reprocessing path. This allows unstable water to be diverted, buffered, and reprocessed within the system, enhancing the ability to maintain the final product water range. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the method flow of the present invention; Figure 2 This is a schematic diagram of the system structure of the present invention. Detailed Implementation

[0025] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. Example 1

[0026] This embodiment provides a method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression, which is applied to an ultrafine ionized water preparation system, such as... Figure 1 As shown, the specific steps include the following: S1. Raw water status acquisition and front-end fluctuation pre-conditioning: First, the raw water to be treated is sent to the raw water collection section via the raw water input pipeline. To ensure that the raw water entering the first-stage electrolysis unit is as stable as possible, inlet conductivity, inlet temperature, inlet flow rate, and inlet pressure sensors are sequentially installed along the flow direction in the raw water collection section to acquire the inlet conductivity, inlet temperature, inlet flow rate, and inlet pressure of the raw water, respectively. These sensors are electrically connected to the control module, which pre-stores the corresponding baseline values ​​or baseline ranges for each parameter to facilitate comparison of real-time acquisition results.

[0027] In this embodiment, after receiving the real-time data collected by each detection element, the control module calculates the deviations of the influent conductivity, influent temperature, influent flow rate, and influent pressure relative to their reference values, and combines these deviations to form an influent deviation group. Since different parameters have varying degrees of influence on subsequent primary and secondary electrolysis, the control module does not simply perform single-point corrections based on individual deviations. Instead, it superimposes the deviations according to preset weights to obtain a weighted result characterizing the overall fluctuation of the current raw water.

[0028] Furthermore, the control module performs tiered adjustments based on the range in which the weighted result falls. When the weighted result is in the first adjustment zone, it indicates that the overall fluctuation of the raw water is relatively small. At this time, the flow rate of the raw water before entering the first-stage electrolysis unit is kept stable by adjusting the flow rate regulator at the inlet of the first-stage electrolysis unit, so as to reduce the fluctuation of the first-stage electrolysis caused by changes in the influent flow state.

[0029] When the weighted result falls within the second adjustment zone, it indicates that the raw water fluctuations have exceeded the level that can be effectively mitigated by flow rate correction alone. At this point, in addition to adjusting the inlet flow rate of the first-stage electrolysis unit, the input current of the first-stage electrolysis unit is also simultaneously adjusted to match the electrolysis intensity with the current state of the raw water. Through this pre-adjustment method, the raw water is limited to a preset inlet fluctuation range before entering the first-stage electrolysis unit, preventing sudden changes in raw water parameters from being directly transmitted to subsequent treatment stages.

[0030] In practical implementation, to avoid misjudgments caused by short-term single sampling, the control module can update the adjustment status by continuously sampling and then making a comprehensive judgment. That is, the raw water status is sampled multiple times within a preset sampling period, and the corresponding adjustment action is executed only after the influent deviation group is formed. This can improve the stability of the front-end regulation and reduce the frequent start-stop or frequent large-scale changes of the flow regulator and current regulator.

[0031] S2. Concentration homogenization treatment of water after primary electrolysis: The raw water, pre-conditioned by S1, enters the primary electrolysis unit. After completing the first stage of electrolysis in the primary electrolysis unit, it is discharged from the outlet of the primary electrolysis unit. Considering that the water after primary electrolysis may have local differences in ion concentration, local differences in pH value, and instantaneous parameter fluctuations caused by short-term electrolysis fluctuations, this embodiment sets up a buffer mixing chamber between the primary electrolysis unit and the secondary electrolysis unit to perform intermediate homogenization of the water after primary electrolysis.

[0032] The water from the first-stage electrolysis does not enter the buffer mixing chamber in a straight axial direction, but rather through a tangential inlet. Multiple flow-guiding baffles are spaced circumferentially within the buffer mixing chamber. As the water enters through the tangential inlet, it forms a cyclic flow path along the inner wall of the chamber under the guidance of the baffles. This cyclic flow is not a straight outflow in a single direction, but rather ensures that the water entering the chamber undergoes at least one complete cyclic path before flowing towards the outlet, thereby extending the effective mixing path of the water within the chamber.

[0033] In this embodiment, a pH value detector, a conductivity detector, a total dissolved solids concentration detector, and a residence time metering unit are installed in the buffer mixing chamber to simultaneously acquire the water state in the buffer mixing chamber.

[0034] After receiving the aforementioned detection signals, the control module performs real-time assessments of the water state entering the buffer mixing chamber. When both the pH and conductivity change rates are detected to be above their respective limits, it indicates that the water entering the buffer mixing chamber still exhibits significant instantaneous fluctuations or localized concentration unevenness. In this case, the control module performs reverse linkage adjustment of the inlet and outlet throttling openings, reducing both the outlet and inlet throttling openings to make the overall flow within the buffer mixing chamber more moderate, thereby extending the water residence time and enhancing the degree of swirling mixing. When both the pH and conductivity change rates are detected to be below their respective limits, it indicates that the concentration homogenization of the water in the buffer mixing chamber is already relatively high. In this case, the control module increases both the outlet and inlet throttling openings to ensure smooth output of the homogenized water.

[0035] With the above structure and adjustment method, the water after primary electrolysis no longer passes through the buffer mixing chamber rapidly via a short path. Instead, concentration homogenization is achieved through flow path extension, cyclic mixing, and residence time control. This reduces the direct impact of transient fluctuations in primary electrolysis on subsequent secondary electrolysis units, resulting in a more consistent pretreatment state for the water entering the secondary electrolysis units.

[0036] S3, Staged energization and abnormal suppression control in the secondary electrolysis stage: After being treated by S2, the water exits the buffer mixing chamber and enters the secondary electrolysis unit. The secondary electrolysis unit is equipped with inert electrodes and uses a staged pulse electrolysis method.

[0037] In this embodiment, a complete pulse electrolysis cycle consists of a high-peak energizing phase, a low-peak energizing phase, and a power-off release phase. The high-peak energizing phase applies a high-intensity electrolysis to the homogenized water to further adjust the state of the target ions. The low-peak energizing phase maintains continuous processing at a lower load, preventing excessive accumulation in the secondary electrolysis process due to prolonged high-load operation. The power-off release phase provides a slow-release time between the two energizing phases to reduce localized load on the electrode surface and the tendency for gas evolution and accumulation.

[0038] To reduce the additional disturbances caused by polarity switching under high electrode load conditions, this embodiment sets the polarity switching between the end of the low-peak energizing phase and the beginning of the de-energizing phase, rather than during the high-peak energizing phase. This allows the polarity switching to be completed within the relatively low load transition range, thereby reducing the impact of the switching action on the current electrolysis state.

[0039] Furthermore, inert electrode temperature rise detection, gas evolution detection, and electrode load detection are installed at the secondary electrolysis unit to monitor the inert electrode temperature rise rate, gas evolution rate, and electrode load, respectively. The control module makes a joint judgment on the above three types of monitoring results, rather than performing adjustments based on a single indicator. When at least two of the inert electrode temperature rise rate, gas evolution rate, and electrode load reach their respective limits, the control module determines that the current secondary electrolysis unit has entered a state requiring fluctuation suppression, and then simultaneously executes the following three control actions: first, reducing the current during the peak power-on phase; second, extending the duration of the power-off release phase; and third, postponing the next polarity switching time.

[0040] The purpose of executing these three actions simultaneously is to gradually transition the secondary electrolysis unit from a high-stress processing state to a more gradual processing state, avoiding the situation where abnormal conditions are not sufficiently reduced due to adjusting only one factor. By combining staged energization with multi-parameter joint monitoring, processing fluctuations caused by electrode load accumulation, enhanced gas evolution, or accelerated temperature rise can be dynamically suppressed without interrupting the continuity of secondary electrolysis.

[0041] S4. Membrane shunt status identification and multi-channel switching processing: The water treated by the secondary electrolysis unit is output from the secondary electrolysis unit and enters the ion-selective membrane diversion assembly. This ion-selective membrane diversion assembly includes an inlet side channel, an ion-selective membrane, a product water side channel, a bypass stabilization channel, and a return channel. The inlet side channel receives water from the secondary electrolysis unit, and the ion-selective membrane is positioned between the inlet side channel and the product water side channel to further divert the water after secondary electrolysis at the membrane diversion stage. The bypass stabilization channel receives water in a fluctuating state, and the return channel receives water that deviates significantly from the set diversion state.

[0042] To determine the membrane splitting state in real time, pH, conductivity, temperature, and flow rate sensors are installed on the inlet and outlet sides of the ion-selective membrane splitting assembly, respectively. The control module identifies the current membrane splitting state based on the parameter difference between the corresponding parameters on the inlet and outlet sides. In this embodiment, the control module pre-sets a first range, a second range, and a third range corresponding to the membrane splitting state.

[0043] When the parameter difference between the inlet and outlet sides is within the preset first range, it indicates that the current ion-selective membrane splitting state is basically stable, and the membrane splitting assembly is in normal product water state. At this time, the control module maintains the product water side channel output, allowing the water to enter the subsequent outlet buffer chamber. When the parameter difference is within the preset second range, it indicates that the current membrane splitting state has fluctuated to some extent, but has not yet reached the point where recirculation and reprocessing are required. At this time, the control module switches to the bypass steady flow channel, allowing this portion of water to be exported through the steady flow path first, rather than being directly used as the final product water output. When the parameter difference is within the preset third range for multiple consecutive sampling cycles, it indicates that the current membrane splitting state has continuously deviated from the stable region, indicating a significant anomaly. At this time, the control module switches to the return channel, sending the corresponding water back to the upstream section for reprocessing.

[0044] By adopting a multi-channel, graded switching method that includes a product water channel, a bypass stabilization channel, and a return channel, water with different levels of fluctuation can be treated through different pathways, avoiding the use of the same treatment method for all deviations, thereby improving the overall system's adaptability to membrane diversion fluctuations.

[0045] S5. Merging and retreatment of the return water with the upstream water: The water that is switched to the return channel in S4 is sent back to the confluence pipe section before the inlet of the buffer mixing chamber via the return module.

[0046] Specifically, the outlet of the reflux channel is located on the confluence pipe section between the outlet of the primary electrolysis unit and the inlet of the buffer mixing chamber, so that the reflux water is first combined with the primary electrolyzed water from the primary electrolysis unit before entering the buffer mixing chamber. The purpose of this arrangement is to ensure that the reflux water does not enter the subsequent treatment stage directly as a separate fluid, but is mixed with the newly generated primary treated water before entering the buffer mixing chamber.

[0047] In this embodiment, the returned water is combined with the water after primary electrolysis and then enters the buffer mixing chamber to re-perform the concentration homogenization treatment in S2 before entering the secondary electrolysis treatment in S3. Since the returned water has already undergone secondary electrolysis and membrane diversion in the previous treatment process, its state is usually different from the newly entering water after primary electrolysis. If the returned water is directly sent to the secondary electrolysis unit, it may cause an imbalance in the inlet state of the secondary electrolysis unit. By first combining the returned water with the water after primary electrolysis and then using the cyclic flow and residence control of the buffer mixing chamber to complete the re-homogenization, the returned water can return to the same treatment path as the main fluid in the preceding stage, thereby reducing the problems of local concentration accumulation and local parameter superposition caused by the return flow.

[0048] Furthermore, since the recirculation path reconnects to the confluence section before the inlet of the buffer mixing chamber, the recirculation process does not bypass the concentration homogenization and secondary electrolysis steps. Instead, it re-executes the concentration homogenization and secondary electrolysis processes, thus forming a complete closed-loop reprocessing path. This closed-loop path enables water that does not meet the requirements during the membrane splitting stage or the end-of-pipe detection stage to be reintroduced into the main process for treatment, rather than being directly discharged or mixed into the qualified product water.

[0049] S6, End-of-line buffer, terminal re-check and final output: Water that is determined by S4 to be suitable for output through the permeate side channel enters the outlet buffer chamber. The outlet buffer chamber is located at the rear end of the permeate side of the membrane splitter assembly and is used to retain and buffer the water entering the terminal output section, reducing the instantaneous fluctuations at the end caused by membrane splitting switching, channel conversion, or changes in the pulse electrolysis rhythm of the upstream section.

[0050] In this embodiment, a pH value detector, a conductivity detector, and a total dissolved solids (TDS) detector are installed in the output buffer chamber to re-detect the water output from the product water channel. The control module compares the end-of-pipe detection results with a preset terminal product water range. When the pH value, conductivity, and TDS all fall within the terminal product water range, the control module opens the product water outlet, outputting this portion of water as ultrafine ionized water. When any of the detection results deviates from the terminal product water range, the control module does not treat it as the final product water output, but instead controls the switching valve to activate, causing this portion of water to enter the return channel and return to the upstream reprocessing path.

[0051] Furthermore, the outlet buffer chamber can be configured as a buffer chamber with adjustable effective volume. The control module dynamically adjusts the effective volume of the outlet buffer chamber based on the number of times the return channel switches within a preset statistical period. When the number of return channel switches increases within the preset statistical period, it indicates that the current system fluctuation is relatively high. The control module increases the effective volume of the outlet buffer chamber and extends the end-point residence time to improve the end-point buffering capacity. When the number of switches decreases, it indicates that the current system is operating relatively smoothly. The control module decreases the effective volume of the outlet buffer chamber and shortens the end-point residence time to avoid excessive occupation of the processing cycle by the end-point buffer. In this way, the outlet buffer chamber can adjust its end-point buffering capacity according to changes in the system operating status, ensuring that the final product water output section maintains a suitable relationship with the fluctuation level of the front-end treatment.

[0052] In summary, the method described in this embodiment is not merely a simple series connection of primary electrolysis, secondary electrolysis, and membrane diversion. Instead, it incorporates an influent deviation group and weighted adjustment mechanism at the raw water inlet stage, a concentration homogenization path after primary electrolysis, a phased energization and joint monitoring suppression mechanism at the secondary electrolysis stage, a multi-channel state switching mechanism at the membrane diversion stage, and an outlet buffer and terminal re-inspection mechanism at the end. Simultaneously, abnormal water is reintroduced into the concentration homogenization and secondary electrolysis paths for treatment via a reflux channel. This forms a closed-loop preparation process from raw water inlet, primary electrolysis, homogenization treatment, secondary electrolysis, membrane diversion, reflux re-treatment, to terminal output. This ensures that fluctuations at each stage are reduced, buffered, and retreated at their respective points, thereby achieving continuous preparation of ultrafine ionized water. Example 2

[0053] This embodiment provides an ultrafine ionized water preparation system based on dynamic feedback and fluctuation suppression, such as... Figure 2 As shown, it includes a raw water acquisition module, a primary electrolysis module, a buffer mixing module, a secondary electrolysis module, a membrane diversion module, a reflux module, an output buffer module, and a control module. The modules are arranged in sequence along the water treatment direction to form a continuous treatment path from raw water input to final product water output, and to form a reflux retreatment closed loop under abnormal conditions.

[0054] Specifically, the raw water acquisition module is located at the front end of the system and is used to receive external raw water and perform initial detection of the raw water status. The raw water acquisition module includes a raw water input pipe section, an inlet water conductivity detection unit, an inlet water temperature detection unit, an inlet water flow rate detection unit, and an inlet water pressure detection unit.

[0055] After the raw water enters the raw water inlet pipe section through the external water supply interface, it passes through the aforementioned detection points in sequence to obtain the inlet water conductivity, inlet water temperature, inlet water flow rate, and inlet water pressure. The output end of the raw water acquisition module is connected to the input end of the first-stage electrolysis module, and each detection unit in the raw water acquisition module is electrically connected to the control module so that the control module can receive real-time status information of the raw water.

[0056] The primary electrolysis module is located after the raw water collection module and is used to perform the first stage of electrolysis treatment on the raw water.

[0057] The primary electrolysis module includes a primary electrolysis chamber, a primary electrolysis electrode assembly located within the chamber, an inlet regulator connected to the chamber inlet, and a current regulating unit connected to the electrode assembly. Based on the detection results transmitted from the raw water acquisition module, the control module calculates the deviations of the inlet water conductivity, temperature, flow rate, and pressure from their respective reference values, forming an inlet water deviation group. The control module then controls the inlet regulator and current regulating unit based on the weighted sum of these deviations. When the weighted sum is in a low fluctuation range, the control module primarily adjusts the inlet regulator to correct the flow rate entering the primary electrolysis module. When the weighted sum is in a high fluctuation range, the control module simultaneously adjusts both the inlet regulator and current regulating unit to match the electrolysis intensity of the primary electrolysis module with the current inlet water condition. This front-end linkage control method ensures that the raw water entering the primary electrolysis module remains within a preset inlet water fluctuation range.

[0058] The buffer mixing module is located on the output side of the first-stage electrolysis module and is used to perform intermediate homogenization treatment on the water after the first-stage electrolysis.

[0059] The buffer mixing module includes a tangential inlet, a buffer mixing chamber, multiple flow guide baffles spaced circumferentially along the buffer mixing chamber, an inlet regulator on the inlet side, and an outlet regulator on the outlet side. After primary electrolysis, the water exiting the primary electrolysis module does not directly enter the buffer mixing chamber axially, but is instead tangentially introduced through the tangential inlet, causing the water to flow in a swirling motion along the chamber wall under the guidance of the flow guide baffles. The buffer mixing module also includes a pH detection unit, a conductivity detection unit, a total dissolved solids (TDS) detection unit, and a residence time measurement unit, all of which are connected to the control module. The control module uses the pH, conductivity, TDS, and residence time data within the buffer mixing module to dynamically control the inlet and outlet regulators.

[0060] When significant fluctuations in the water are detected, the control module reduces the outlet opening and the inlet throttling opening to prolong the residence time of the water in the buffer mixing chamber. When the water homogenization level is detected to be improved, the control module increases the outlet opening and the inlet throttling opening to output the homogenized water to the subsequent units.

[0061] The secondary electrolysis module is located on the output side of the buffer mixing module and is used to perform a second-stage electrolysis treatment on the water after concentration homogenization.

[0062] The secondary electrolysis module includes a secondary electrolysis chamber, an inert electrode assembly, a pulse power supply unit connected to the inert electrode assembly, a polarity switching unit, a temperature rise detection unit, a gas evolution detection unit, and a load detection unit. The control module is connected to the pulse power supply unit, polarity switching unit, temperature rise detection unit, gas evolution detection unit, and load detection unit, respectively.

[0063] The control module controls the secondary electrolysis module to sequentially execute the high-peak energization phase, the low-peak energization phase, and the power-off release phase, and sets the polarity switching between the end of the low-peak energization phase and the beginning of the power-off release phase. Simultaneously, a temperature rise detection unit detects the inert electrode temperature rise rate, a gas evolution detection unit detects the gas evolution rate, and a load detection unit detects the electrode load. When the control module determines that at least two of the inert electrode temperature rise rate, gas evolution rate, and electrode load have reached their corresponding limits, it simultaneously reduces the current during the high-peak energization phase, extends the duration of the power-off release phase, and postpones the next polarity switching time, thereby suppressing abnormal fluctuations in the secondary electrolysis process.

[0064] The membrane diversion module is located on the output side of the secondary electrolysis module and is used to divert the water after secondary electrolysis.

[0065] The membrane splitting module includes an inlet-side channel, an ion-selective membrane disposed between the inlet-side channel and the permeate-side channel, a permeate-side channel, a bypass stabilization channel, and a return channel. A pH detection unit, a conductivity detection unit, a temperature detection unit, and a flow rate detection unit are respectively installed in the inlet-side channel and the outlet-side channel to collect the operating parameters of the membrane splitting module on the inlet and outlet sides, respectively.

[0066] The control module determines the current membrane shunt status based on the difference between corresponding parameters on the inlet and outlet sides. When the parameter difference is within a preset first range, the control module maintains the permeate side channel open; when the parameter difference is within a preset second range, the control module switches to the bypass stabilization channel; and when the parameter difference is within a preset third range for multiple consecutive sampling cycles, the control module switches to the return channel. Thus, the membrane shunt module can use different channel processing paths for different degrees of state deviation, rather than treating all abnormal states uniformly.

[0067] The reflux module is connected to the reflux channel in the membrane diversion module, and its outlet is located on the confluence pipe section between the outlet of the primary electrolysis module and the inlet of the buffer mixing module. In other words, the reflux module does not return abnormal water to the source water; instead, it guides the reflux water into the path of the water after primary electrolysis, allowing it to merge with the primary electrolyzed water before entering the buffer mixing module. Through this reflux connection method, the reflux water can re-pass through the concentration homogenization and secondary electrolysis treatment paths without bypassing the crucial intermediate adjustment steps, thereby improving the closed-loop correction effect.

[0068] The output buffer module is located at the rear end of the product water side of the membrane splitting module and is used to buffer and re-inspect the water entering the terminal output section.

[0069] The export buffer module includes an export buffer chamber, a pH detection unit, a conductivity detection unit, and a total dissolved solids concentration detection unit installed in the export buffer chamber, as well as a product water outlet and a reflux switching port connected to the export buffer chamber.

[0070] The output buffer chamber is preferably configured with an adjustable effective volume. The control module adjusts the effective volume of the output buffer chamber based on the number of switching times of the reflux channel within a preset statistical period. When the number of reflux switching times increases within the preset statistical period, the control module increases the effective volume of the output buffer chamber to extend the end residence time; when the number of switching times decreases, the control module decreases the effective volume of the output buffer chamber to improve the overall processing efficiency of the system. The detection unit in the output buffer module is used to re-inspect the water output from the product water side channel. When the pH value, conductivity, and total dissolved solids concentration of the water are all within the terminal product water range, the water is output as ultrafine ionized water through the product water outlet; when the detection results are not within the terminal product water range, the control module controls the reflux switching port to open, so that the corresponding water is switched to the reflux module for reprocessing.

[0071] The control module can be implemented using a programmable logic controller (PLC), an industrial control motherboard, or other control units with data acquisition and linkage control capabilities.

[0072] The control module is connected to the raw water acquisition module, primary electrolysis module, buffer mixing module, secondary electrolysis module, membrane diversion module, reflux module, and output buffer module. It receives detection data from each detection unit and issues control commands to each regulating component, switching component, and power supply unit according to preset control logic. This control module does not perform independent control of a single parameter; instead, it establishes front-end influent deviation adjustment, mid-stage concentration homogenization adjustment, secondary electrolysis anomaly suppression adjustment, membrane diversion state switching adjustment, and end-stage buffer re-check adjustment at different points in the system, creating a continuous and dynamic feedback relationship between the treatment units.

[0073] In the operation of the system described in this embodiment, the raw water is first detected by the raw water acquisition module and then enters the first-stage electrolysis module. After the first-stage electrolysis, the water enters the buffer mixing module for concentration homogenization, and then enters the second-stage electrolysis module for staged electrolysis treatment. Finally, it enters the membrane diversion module for diversion determination.

[0074] For water bodies that meet the conditions for stable diversion, the water enters the outlet buffer module through the product water side channel for final retention and re-inspection. For water bodies in an intermediate fluctuating state, the water is transitionally exited through the bypass stabilization channel. For water bodies that continuously deviate from the stable state, the water is reintroduced into the front end of the buffer mixing module through the return channel and return module, where it merges with the water after primary electrolysis and undergoes concentration homogenization and secondary electrolysis again. Through the above structural arrangement and connection relationship, this system forms a closed-loop preparation path consisting of front-end pre-conditioning, mid-stage homogenization, secondary suppression, diversion determination, return re-treatment, and final re-inspection, thereby realizing the continuous preparation of ultrafine ionized water.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression, characterized in that, Includes the following steps: S1. Collect the inlet conductivity, inlet temperature, inlet flow rate and inlet pressure of the raw water, compare them with the corresponding benchmark values ​​to form an inlet deviation group, and adjust the inlet flow rate and input current of the first-stage electrolysis unit according to the weighted result of each deviation so that the raw water entering the first-stage electrolysis unit is within the preset inlet fluctuation range. S2. The water after primary electrolysis is introduced into the buffer mixing chamber in a tangential manner, so that the water flows in a circular motion. The pH value, conductivity, total dissolved solids concentration and residence time are collected simultaneously in the buffer mixing chamber. The inlet throttling degree and outlet opening are adjusted in a linkage manner so that the water after primary electrolysis is homogenized within a preset residence time window before being output. S3. The water body after concentration homogenization is introduced into the secondary electrolysis unit. The secondary electrolysis unit is sequentially subjected to a high peak current-on stage, a low peak current-on stage, and a power-off release stage. The polarity switching is set from the end of the low peak current-on stage to the beginning of the power-off release stage. At the same time, the inert electrode temperature rise rate, gas evolution rate, and electrode load are monitored. When the joint monitoring results reach the limit conditions, the high peak current is reduced, the power-off release time is extended, and the next polarity switching time is postponed. S4. The water after secondary electrolysis is introduced into the ion-selective membrane splitting assembly. The pH value, conductivity, temperature and flow rate are collected on the inlet and outlet sides of the ion-selective membrane splitting assembly, respectively. The current membrane splitting state is determined according to the parameter difference between the inlet and outlet sides. When the parameter difference is within the preset first range, the output of the product water channel is maintained. When the parameter difference is within the preset second range, the bypass steady flow channel is switched. When the parameter difference is within the preset third range for multiple consecutive sampling cycles, the return channel is switched. S5. The water that has entered the return channel is sent back to the inlet of the buffer mixing chamber, and the return water is combined with the water after the first-stage electrolysis before entering the buffer mixing chamber, so as to re-perform concentration homogenization and second-stage electrolysis treatment. S6. The water output from the water production channel is introduced into the outlet buffer chamber. The water is then buffered at the end of the outlet buffer chamber, and the pH value, conductivity and total dissolved solids concentration are detected again. Water that meets the requirements of the terminal water production range is output as ultra-fine ion water, and water that does not meet the requirements of the terminal water production range is switched to the return channel.

2. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S1, the weighted result is obtained by multiplying the inlet water conductivity deviation, inlet water temperature deviation, inlet water flow rate deviation and inlet water pressure deviation by their respective weights and then superimposing them. There are a first adjustment zone and a second adjustment zone. When the weighted result falls into the first adjustment zone, only the inlet flow rate of the first-stage electrolysis unit is adjusted. When the weighted result falls into the second adjustment zone, both the inlet flow rate of the first-stage electrolysis unit and the input current of the first-stage electrolysis unit are adjusted.

3. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S2, the buffer mixing chamber includes a tangential inlet and baffles spaced apart along the circumference of the chamber. After the water from the first electrolysis enters the buffer mixing chamber, it forms a cyclic flow along the chamber wall and passes through at least one complete cyclic path before being output to the second electrolysis unit.

4. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S2, the inlet throttling opening and the outlet opening are adjusted in a reverse linkage manner: T1: When the rate of change of pH and the rate of change of conductivity in the buffer mixing chamber are both higher than the corresponding limits, reduce the outlet opening and the inlet throttling opening to prolong the residence time of water in the buffer mixing chamber. T2: When the rate of change of pH and the rate of change of conductivity in the buffer mixing chamber are both lower than the corresponding limits, increase the outlet opening and increase the inlet throttling opening.

5. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S3, the high-peak energizing stage, the low-peak energizing stage, and the power-off release stage constitute a pulse electrolysis cycle. The peak current of the high-peak energizing stage is greater than the peak current of the low-peak energizing stage, and the polarity switching is not set during the high-peak energizing stage, but is set after the low-peak energizing stage ends and before the power-off release stage begins.

6. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S3, the joint monitoring results reaching the limit condition means that at least two of the inert electrode temperature rise rate, gas evolution rate, and electrode load simultaneously exceed their respective limits. In this case, the peak current is reduced, the power-off release time is extended, and the next polarity switching time is delayed simultaneously.

7. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S4, the ion-selective membrane diversion assembly includes a product water side channel, a bypass stabilizing channel, a return channel, and an ion-selective membrane disposed between the inlet side channel and the product water side channel. The bypass stabilizing channel is connected to the outlet buffer chamber, and the return channel is connected to the inlet of the buffer mixing chamber.

8. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S4, the parameter difference is formed by the difference between the corresponding parameters on the import side and the export side, and the state is determined by continuous sampling. When the parameter difference is within the preset second range, the system switches to the bypass current channel. When the parameter difference is within the preset third range for multiple consecutive sampling periods, the system switches to the return channel.

9. The method for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression according to claim 1, characterized in that, In step S5, the outlet of the reflux channel is located on the confluence pipe section between the outlet of the primary electrolysis unit and the inlet of the buffer mixing chamber, so that the reflux water is mixed with the water after primary electrolysis before entering the buffer mixing chamber.

10. A system for preparing ultrafine ionized water based on dynamic feedback and fluctuation suppression, used to implement the method as described in any one of claims 1-9, characterized in that, include: The raw water acquisition module is used to collect data on the conductivity, inlet temperature, inlet flow rate, and inlet pressure of the raw water. Primary electrolysis module; A buffer mixing module is provided on the output side of the primary electrolysis module and includes a tangential liquid inlet, a flow guide baffle, an inlet regulating valve, and an outlet regulating valve. A secondary electrolysis module is disposed on the output side of the buffer mixing module; A membrane diversion module is located on the output side of the secondary electrolysis module and includes an ion-selective membrane, a product water side channel, a bypass stabilization channel, and a reflux channel. The reflux module is connected to the reflux channel and the inlet of the buffer mixing module; The output buffer module is connected to the water production side channel and is used to perform end-stage buffering of the output water. Water that meets the terminal water production range is output as ultrafine ion water, and water that does not meet the terminal water production range is switched to the return channel. The control module, electrically connected to other modules, is used for: Based on the inlet water conductivity, inlet water temperature, inlet water flow rate, and inlet water pressure relative to the corresponding reference values, the inlet flow rate and input current of the first-stage electrolysis module are adjusted. The inlet and outlet regulating valves are adjusted in conjunction with the pH value, conductivity, total dissolved solids concentration and residence time collected within the buffer mixing module. Switch the corresponding channel based on the parameter difference between the inlet and outlet sides of the membrane shunt module; The high-peak power-on stage, low-peak power-on stage, and power-off release stage are sequentially applied to the secondary electrolysis module.

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