An intelligent automatic acidification gas blowing system for sulfide in water quality

Abstract

The present invention relates to the technical field of water quality sulfide detection, and particularly to a fully automatic intelligent blowing system for acidifying sulfide in water quality. The present invention uses sensors to detect the release rate of sulfide in real time during the acidification process, providing immediate feedback on the reaction. According to the monitored sulfide release rate, the amount of acid added is automatically adjusted. If the reaction rate is lower than expected, the system will increase the amount of acid; conversely, it will reduce the amount of acid. According to the change in the release rate, the termination time of the reaction is automatically determined, ensuring the full release of sulfide while avoiding unnecessary prolongation of the reaction time. Adaptive acidification control is adopted to ensure that sulfide in different water samples is released under optimal conditions, improving the accuracy of determination, while reducing the waste of chemical reagents and the generation of by-products. It solves the problems in the prior art that the differences in sulfide content and chemical environment in different water samples are not taken into account as consideration indicators, and the quantitative analysis of sulfide is only carried out after the acidification and blowing processes are completed.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality sulfide detection, and particularly to a full-automatic intelligent blowing system for acidifying water quality sulfide. Background Art

[0002] Sulfides in water mainly include dissolved hydrogen sulfide (H2S), hydrogen sulfide ion (HS - ), sulfide ion (S 2- ), as well as soluble sulfides in suspended solids, acid-soluble metal sulfides, and un-ionized organic and inorganic sulfides; hydrogen sulfide is highly volatile, easily released from water bodies into the air, emitting an obvious rotten egg smell, and is highly toxic; even if the hydrogen sulfide concentration in water is only a few milligrams per liter, it is sufficient to cause discomfort and even harm to human health; hydrogen sulfide will interfere with the normal functions of cytochromes and oxidases, leading to hypoxia in cell tissues and endangering life in severe cases; therefore, controlling the concentration of sulfides in water is a key task in current environmental protection work and has important ecological and public health significance.

[0003] In the current water quality sulfide acidification blowing system, the acidification process is a key step in releasing sulfides. Traditional blowing systems usually preset the acidification dose and reaction time. This "fixed formula" method does not consider the differences in sulfide content and chemical environment in different water samples, resulting in problems such as incomplete acidification or over-acidification; if the sulfide concentration is high, the preset amount of acid is not sufficient to completely release all sulfides, resulting in a low determination result. In the case of low sulfide concentration, too much acid will cause side reactions and interfere with the accurate determination of sulfides; in addition, for the quantitative analysis of sulfides, it is generally carried out after the entire acidification and blowing process in traditional blowing systems. Post-event analysis cannot effectively detect and correct abnormalities that occur during the reaction process; at the same time, if problems occur in the acidification or blowing steps, such as insufficient acidification or insufficient blowing, these errors will accumulate in the final result, leading to a distorted determination result.

[0004] Currently, for the above problems of not considering the differences in sulfide content and chemical environment in different water samples and performing sulfide quantitative analysis only after the acidification and blowing processes; the current solutions usually use excessive acid and fixed reaction time to ensure that most sulfides can be released, but this is often accompanied by the generation of by-products and reagent waste problems, and it is difficult to handle complex water samples; for post-event quantitative analysis problems, the analysis is generally through redundant steps, such as repeated blowing to reduce errors, but it will also increase the consumption of time and reagents, and still cannot handle all emergencies. Therefore, there is an urgent need for a full-automatic intelligent blowing system for acidifying water quality sulfide to solve such problems. Summary of the Invention

[0005] To this end, the present invention provides a fully automatic intelligent blowing system for acidifying water quality sulfide, which is used to overcome the problems in the prior art that the differences in sulfide content and chemical environment in different water samples are not taken as consideration indexes, and the quantitative analysis of sulfide is carried out only after the acidification and blowing processes are completed.

[0006] To achieve the above object, the present invention provides a fully automatic intelligent blowing system for acidifying water quality sulfide, including:

[0007] An acidification reaction control module, which is responsible for the acidification reaction process of sulfide, including the addition of acid, the control of reaction time and the dynamic adjustment of the acidification process;

[0008] A sulfide release kinetics monitoring module, which real-time monitors the generation rate of hydrogen sulfide gas and serves as the basis for controlling the acidification process;

[0009] A quantitative feedback correction module, which is responsible for real-time monitoring the hydrogen sulfide release amount during the blowing process and automatically correcting any abnormalities occurring during the detection process to ensure accurate measurement results;

[0010] An automatic blowing and trapping module, which performs the blowing operation, blows the hydrogen sulfide gas out of the acidification reaction and traps it into a specified solution to ensure the complete release and quantitative trapping of sulfide;

[0011] A result output module, including a data processing unit. The result output module processes the data collected by each module of the system and outputs the measurement result of the final sulfide content; the result output module integrates the data of each sensor, performs calculations and corrects errors to obtain the sulfide concentration result.

[0012] Further, the acidification reaction control module includes:

[0013] An acid solution delivery system, which is used to add acid solution to the reactor, and the addition amount is dynamically adjusted according to the control signal, and the control signal comes from the feedback control system;

[0014] A pH and conductivity sensor, which real-time monitors the changes in the pH value and conductivity of the liquid phase in the reactor and provides an indirect indication of the sulfide release rate;

[0015] A feedback control system, which adjusts the acid solution addition rate, the parameter settings during the acidification process and the reaction time based on the sensor feedback data to achieve adaptive acidification control;

[0016] The sulfide release kinetics monitoring module includes:

[0017] A hydrogen sulfide gas sensor, which real-time detects the concentration change of hydrogen sulfide gas in the reactor and calculates its generation rate;

[0018] A data acquisition system, which collects the sensor data and transmits it to the feedback control system for analysis;

[0019] The quantitative feedback correction module includes:

[0020] A spectral analyzer that monitors the concentration and changes of hydrogen sulfide in real time during the blowing process;

[0021] An electrochemical sensor that detects the quantitative information of hydrogen sulfide and compares it with a preset curve;

[0022] An automatic correction system that automatically adjusts the blowing parameters, including gas flow rate and blowing time, to correct errors once an abnormality is detected;

[0023] The automatic blowing and trapping module includes:

[0024] An air flow control system that adjusts the air flow rate to ensure the efficient blowing of hydrogen sulfide;

[0025] A trapping device that traps and dissolves the hydrogen sulfide released from the gas to ensure quantitative trapping.

[0026] Furthermore, the operation process of the acidification reaction control module includes:

[0027] The acid solution delivery system starts adding acid solution according to the initial set value;

[0028] The pH and conductivity sensors monitor the reaction progress in real time and feed back the data to the feedback control system;

[0029] The feedback control system dynamically adjusts the acid solution addition rate to ensure the optimal acidification conditions;

[0030] When the sensor data reaches the set termination condition, the system stops the acidification reaction and enters the next stage;

[0031] The operation process of the sulfide release kinetics monitoring module includes:

[0032] The hydrogen sulfide gas sensor continuously collects gas concentration data during the reaction;

[0033] The data acquisition system transmits the gas concentration data to the feedback control system in real time;

[0034] The feedback control system adjusts the parameter settings during the acidification process according to the change of the gas generation rate;

[0035] The operation process of the quantitative feedback correction module includes:

[0036] During the blowing process, the spectral analyzer and the electrochemical sensor synchronously collect the concentration data of hydrogen sulfide;

[0037] The system compares the real-time data with the preset sulfide release curve;

[0038] When data deviation from the expected value is detected, the automatic correction system adjusts the acidification or gas-blowing parameters to correct the errors in the process in real time.

[0039] Furthermore, the operation process of the automatic gas-blowing and trapping module includes:

[0040] Start the gas-blowing operation after the acidification reaction ends, and the gas flow control system adjusts the gas flow rate to ensure the best gas-blowing effect;

[0041] The trapping device receives and dissolves the hydrogen sulfide blown out from the reactor to complete quantitative trapping;

[0042] The result output method is as follows:

[0043] The data collected by each module is transmitted to the data processing unit. The data processing unit performs calculations, corrections, and analyses to obtain the final result; the result output module generates an analysis report.

[0044] Furthermore, the overall working process of the fully automatic intelligent acidification and gas-blowing system for water quality sulfide includes:

[0045] Step S1, initial setting. The user inputs the experimental conditions and water sample information, and the system automatically configures the initial parameters according to the input;

[0046] Step S2, acidification process. The acidification reaction control module performs acidification operations according to the real-time monitoring data, and adaptively adjusts the acid amount and reaction time;

[0047] Step S3, sulfide release monitoring. The sulfide release kinetics monitoring module tracks the generation rate of hydrogen sulfide in real time and provides feedback for adjusting the acidification process;

[0048] Step S4, gas-blowing and trapping. The automatic gas-blowing and trapping module is started to trap hydrogen sulfide gas;

[0049] Step S5, real-time correction. The quantitative feedback correction module performs abnormal monitoring during the entire gas-blowing process and immediately corrects abnormal data;

[0050] Step S6, result output. After all data is processed and corrected, the final sulfide concentration result is output.

[0051] Furthermore, during the acidification process in step S2, real-time monitoring and adaptive acidification control are also carried out:

[0052] Configure a high-precision hydrogen sulfide gas sensor and a conductivity sensor in the acidification reactor to obtain the rate data of sulfide release in real time;

[0053] The feedback control system monitors the sulfide release rate and provides immediate feedback on the acidification reaction in real time: if the detected sulfide release rate is lower than expected, the acid amount is automatically increased; if the release rate is too high, the acid amount is reduced to prevent over-acidification;

[0054] When the sulfide release rate approaches zero or stabilizes at a low level, the feedback control system automatically terminates the acidification reaction, preventing unnecessary prolongation of the reaction time while ensuring sufficient release of sulfide;

[0055] The adaptive acidification control can be dynamically adjusted according to the characteristics of each water sample to ensure the release of sulfide under optimal conditions and reduce the generation of by-products; at the same time, by precisely controlling the amount of acid used, it reduces the waste of chemical reagents and improves the environmental protection and economy of the experiment.

[0056] Furthermore, the feedback control system consists of:

[0057] The sensor inputs include: a hydrogen sulfide gas sensor, a pH sensor, and a conductivity sensor, which are used to monitor the hydrogen sulfide release rate r(t), the liquid-phase pH value pH(t), and the liquid-phase conductivity σ(t) in real time, where t represents the monitoring time;

[0058] Reference set values: the set value r set (t) of the expected hydrogen sulfide release rate, and the set value pH set (t) of the liquid-phase pH;

[0059] Control output: the acid addition rate Q a (t);

[0060] State estimator: estimates the unmeasured state variables during the reaction process;

[0061] Multi-objective optimizer: optimizes the acid addition rate and the acidification time;

[0062] The objective function J(t) is defined in the feedback control system, including the sulfide release rate and the acidification process:

[0063] where σ set (t) is the target conductivity, α1, α2, α3 are weight parameters, and dt represents the time increment;

[0064] A non-linear controller is used to dynamically adjust the acid addition rate to flexibly respond to changes in the sulfide release rate:

[0065]

[0066] where Q a (t) represents the acid addition rate, and K pRepresents the proportional control gain, which adjusts the error relationship between the acid solution rate and the sulfide release rate, K d Represents the derivative control gain, which is used to mitigate the impact of the rapidly changing sulfide release rate on the system

[0067] K i Represents the integral control gain, which is used to eliminate the steady-state error of the system. β1 and β2 represent the non-linear adjustment coefficients, which are used to correct the acid solution addition rate, r max Represents the maximum value of the sulfide release rate, pH opt Represents the optimal pH value Represents the derivative operation with respect to time t Represents the rate of change of the error between the expected hydrogen sulfide release rate and the actual release rate

[0068] Furthermore, in the feedback control system:

[0069] The Kalman Filter is used for state estimation to predict the unmeasured reaction state variables

[0070] The multi-objective optimization algorithm (particle swarm optimization or genetic algorithm) is used to dynamically optimize the acid solution addition rate Q a (t) and the reaction time t The solution objective is to find the optimal Q a (t) and t, such that the objective function J(t) is minimized, and the optimization result is fed back to the feedback control system in real time to update the acid solution addition strategy

[0071] The triggering conditions for terminating the acidification reaction include:

[0072] The sulfide release rate is close to zero: when r(t) satisfies r(t) < ε r At this time, the system determines that the reaction is basically completed, where ε r Is a minimum threshold

[0073] The system state is stable: when both the pH value pH(t) and the conductivity σ(t) are stable within the preset range and no longer change significantly, the acidification reaction is terminated

[0074] Achieving precise control of sulfide release in water samples has significant advantages in the following application scenarios:

[0075] In the scenario of high-concentration sulfide water samples, the system can automatically increase the acid amount according to the real-time monitoring data to achieve the complete release of sulfide

[0076] In the scenario of low-concentration sulfide water samples, the system can reduce the acid amount to avoid over-acidification and the generation of by-products

[0077] In a dynamically changing water sample environment scenario, by adjusting in real time to cope with changes in environmental conditions, the stability of sulfide release is maintained;

[0078] Thereby reducing the waste of chemical reagents and improving the environmental friendliness and economy of the reaction.

[0079] Furthermore, in the blowing and trapping stage of step S4, real-time quantitative feedback and automatic correction are also carried out:

[0080] Integrate a spectroscopic analyzer and an electrochemical sensor in the blowing system to collect the concentration and release dynamics of hydrogen sulfide in real time;

[0081] The automatic correction system compares the real-time data with the expected release curve: if the detected release amount is lower than expected, it immediately judges that there may be problems of insufficient acidification or insufficient blowing;

[0082] The automatic correction system automatically adjusts the acidification parameters or blowing parameters according to the abnormal situation to ensure that the sulfide release process meets the expectations and avoid the accumulation of errors affecting the final result;

[0083] Respond to abnormal situations through real-time feedback and automatic correction, maintain the high precision of the detection process, and reduce the measurement error; the automatic correction mechanism reduces the detection failure caused by process abnormalities and improves the reliability and consistency of the overall detection.

[0084] Furthermore, in the blowing and trapping stage of step S4, the real-time quantitative feedback and automatic correction method is as follows:

[0085] The spectroscopic analyzer and electrochemical sensor integrated in the blowing system monitor the concentration and release dynamics of hydrogen sulfide in real time and transmit the concentration data to the feedback control system;

[0086] The spectroscopic analyzer is used to detect the optical properties of hydrogen sulfide and deduce its concentration change; the electrochemical sensor directly measures the concentration of hydrogen sulfide in the solution to supplement the data of spectroscopic analysis;

[0087] The feedback control system compares the data collected in real time with the preset hydrogen sulfide release curve;

[0088] Carry out anomaly detection according to the comparison result. If it is found that the release amount of hydrogen sulfide is lower than expected, give a warning;

[0089] If it is detected that the release of hydrogen sulfide is insufficient and the acidification process has been completed, extend the blowing time or increase the gas flow rate;

[0090] Dynamically adjust the system and respond to the changes in the monitored data in real time until the release of hydrogen sulfide returns to the expected range;

[0091] Continue to monitor the release of hydrogen sulfide in real time after adjusting the parameters, and compare the new data with the corrected expected curve; if a new deviation is detected, adjust again;

[0092] The feedback loop continues until the release process of hydrogen sulfide is stable and conforms to the expected release curve.

[0093] Compared with the prior art, the present invention has the following beneficial effects:

[0094] In the present invention, by real-time monitoring the release kinetic characteristics of sulfides during the acidification process, including the generation rate of hydrogen sulfide gas and the change of liquid-phase conductivity, the addition amount of acid and the reaction time are dynamically adjusted. Specifically:

[0095] The rate of sulfide release during the acidification process is detected in real time by a sensor to provide immediate feedback on the reaction;

[0096] The addition amount of acid is automatically adjusted according to the monitored sulfide release rate. If the reaction rate is lower than expected, the system will increase the acid amount; otherwise, it will decrease the acid amount to avoid over-acidification;

[0097] According to the change of the release rate, the termination time of the reaction is automatically determined to ensure the full release of sulfides while avoiding unnecessary prolongation of the reaction time.

[0098] In the present invention, adaptive acidification control is adopted to ensure that sulfides in different water samples are released under the best conditions, improve the accuracy of determination, and at the same time reduce the waste of chemical reagents and the generation of by-products.

[0099] In the present invention, a real-time sulfide quantitative feedback and automatic correction mechanism is adopted. Specifically:

[0100] During the blowing process, the release amount of sulfides is monitored in real time by spectroscopic analysis and an electrochemical sensor, and the current state information of the reaction can be obtained immediately;

[0101] Compare the real-time data with the expected sulfide release curve. Once it is detected that the release amount is lower than expected, it is immediately judged that there may be problems such as insufficient acidification or insufficient blowing;

[0102] When the system detects an abnormality, it will immediately adjust the acidification intensity, blowing flow rate or time to ensure that the release of sulfides reaches the expected target. The automatic correction mechanism can correct the errors that occur in the process in real time and avoid accumulating the errors into the final determination result.

[0103] In the present invention, through real-time feedback and automatic correction, high precision can be maintained during the sulfide detection process, and the determination errors caused by process abnormalities can be significantly reduced, thereby improving the overall detection reliability.

[0104] It solves the problem that in the prior art, the differences in the sulfide content and chemical environment in different water samples are not taken as consideration indicators, and the quantitative analysis of sulfide is only carried out after the acidification and gas blowing processes are completed. Brief Description of the Drawings

[0105] Figure 1 It is a schematic structural diagram of the fully automatic intelligent gas blowing system for acidifying sulfide in water quality of the present invention. Detailed Embodiments

[0106] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0107] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0108] The present invention will be further described in detail below in conjunction with the accompanying drawings:

[0109] Embodiment 1

[0110] Please refer to Figure 1 , the present invention provides a fully automatic intelligent gas blowing system for acidifying sulfide in water quality, including:

[0111] An acidification reaction control module, which is responsible for the acidification reaction process of sulfide, including the addition of acid, the control of reaction time, and the dynamic adjustment of the acidification process;

[0112] The acidification reaction control module includes:

[0113] An acid solution delivery system, which is used to add acid solution to the reactor, and the addition amount is dynamically adjusted according to the control signal, and the control signal comes from the feedback control system;

[0114] pH and conductivity sensors that continuously monitor the changes in pH value and conductivity of the liquid phase in the reactor, providing an indirect indication of the sulfide release rate;

[0115] A feedback control system that adjusts the acid addition rate, parameter settings during acidification, and reaction time based on the sensor feedback data to achieve adaptive acidification control;

[0116] The operation process of the acidification reaction control module includes:

[0117] The acid delivery system starts adding acid according to the initial set value;

[0118] The pH and conductivity sensors continuously monitor the reaction progress and feed the data back to the feedback control system;

[0119] The feedback control system dynamically adjusts the acid addition rate to ensure the optimal acidification conditions;

[0120] When the sensor data reaches the set termination condition, the system stops the acidification reaction and enters the next stage;

[0121] Specifically, through the acidification reaction control module, the feedback control system is used to adjust the acid addition rate and reaction time in real time; this module dynamically optimizes the acidification conditions according to the pH value, conductivity, and hydrogen sulfide release rate parameters to ensure the effective release of sulfide; it not only avoids the generation of by-products caused by over-acidification but also reduces the waste of chemical reagents, thereby improving the environmental friendliness and economy of the experiment; this adaptive acidification control enables the system to handle various complex water samples, whether they are high-concentration or low-concentration sulfide water samples, and can achieve stable and accurate detection.

[0122] The sulfide release kinetics monitoring module that continuously monitors the generation rate of hydrogen sulfide gas as the basis for acidification process control;

[0123] The sulfide release kinetics monitoring module includes:

[0124] A hydrogen sulfide gas sensor that continuously detects the concentration change of hydrogen sulfide gas in the reactor and calculates its generation rate;

[0125] A data acquisition system that collects sensor data and transmits it to the feedback control system for analysis;

[0126] The operation process of the sulfide release kinetics monitoring module includes:

[0127] The hydrogen sulfide gas sensor continuously collects gas concentration data during the reaction;

[0128] The data acquisition system transmits the gas concentration data to the feedback control system in real time;

[0129] The feedback control system adjusts the parameter settings during the acidification process according to the change in the gas generation rate;

[0130] Specifically, the sulfide release kinetics monitoring module predicts and adjusts the unmeasured reaction state variables by real-time monitoring the generation rate of hydrogen sulfide gas, combined with the state estimator and the multi-objective optimizer, further improving the detection accuracy; adopting the multi-objective optimization algorithm, the system balances between the acidification time and the acid solution usage, enabling an ideal detection effect under different conditions.

[0131] The quantitative feedback correction module is responsible for real-time monitoring the hydrogen sulfide release amount during the blowing process and automatically correcting any abnormalities that occur during the detection process to ensure accurate measurement results;

[0132] The quantitative feedback correction module includes:

[0133] A spectral analyzer that real-time monitors the concentration and change of hydrogen sulfide during the blowing process;

[0134] An electrochemical sensor that detects the quantitative information of hydrogen sulfide and compares it with the preset curve;

[0135] An automatic correction system that automatically adjusts the blowing parameters, including gas flow rate and blowing time, to correct errors once an abnormality is detected;

[0136] The operation process of the quantitative feedback correction module includes:

[0137] During the blowing process, the spectral analyzer and the electrochemical sensor synchronously collect the concentration data of hydrogen sulfide;

[0138] The system compares the real-time data with the preset sulfide release curve;

[0139] When it is detected that the data deviates from the expectation, the automatic correction system adjusts the acidification or blowing parameters to correct the errors in the process in real time;

[0140] Specifically, the quantitative feedback correction module monitors the concentration and release dynamics of hydrogen sulfide through the real-time data collection of the spectral analyzer and the electrochemical sensor; once it is detected that the actual release amount is lower than the expectation, it automatically adjusts the acidification and blowing parameters to prevent the detection result from deviating from the true value; the real-time correction mechanism greatly reduces the measurement errors caused by insufficient acidification or insufficient blowing, improving the overall detection reliability.

[0141] The automatic blowing and trapping module performs the blowing operation to blow the hydrogen sulfide gas out of the acidification reaction and trap it into the specified solution, ensuring the complete release and quantitative trapping of sulfides;

[0142] The automatic blowing and trapping module includes:

[0143] An air flow control system that adjusts the air flow rate to ensure efficient blowing of hydrogen sulfide;

[0144] A trapping device that traps and dissolves hydrogen sulfide released from the gas to ensure quantitative trapping;

[0145] The operation process of the automatic blowing and trapping module includes:

[0146] After the acidification reaction ends, start the blowing operation, and the air flow control system adjusts the air flow rate to ensure the best blowing effect;

[0147] The trapping device receives and dissolves the hydrogen sulfide blown out from the reactor to complete quantitative trapping;

[0148] Specifically, in the blowing and trapping stage, through automatic correction and dynamic adjustment, ensure the efficient release of hydrogen sulfide gas and complete trapping; not only ensure the high precision of the detection process, but also significantly reduce the detection failures caused by process anomalies.

[0149] A result output module, including a data processing unit, which processes the data collected by each module of the system and outputs the measurement result of the final sulfide content; the result output module integrates the data of each sensor, performs calculations and corrects errors to obtain the sulfide concentration result;

[0150] The result output method is:

[0151] The data collected by each module is transmitted to the data processing unit, and the data processing unit performs calculations, corrections and analyses to obtain the final result; the result output module generates an analysis report;

[0152] The overall working process of the fully automatic water quality sulfide acidification intelligent blowing system includes:

[0153] Step S1, initial setting, the user inputs the experimental conditions and water sample information, and the system automatically configures the initial parameters according to the input;

[0154] Step S2, acidification process, the acidification reaction control module performs acidification operations according to real-time monitoring data and adaptively adjusts the acid amount and reaction time;

[0155] Step S3, sulfide release monitoring, the sulfide release kinetics monitoring module tracks the generation rate of hydrogen sulfide in real time and provides feedback for adjusting the acidification process;

[0156] Step S4, blowing and trapping, the automatic blowing and trapping module starts to trap hydrogen sulfide gas;

[0157] Step S5, real-time correction, the quantitative feedback correction module performs anomaly monitoring and instant correction of anomaly data during the whole blowing process;

[0158] Step S6, result output. After all data are processed and corrected, the final sulfide concentration result is output;

[0159] During the acidification process in step S2, real-time monitoring and adaptive acidification control are also carried out:

[0160] A high-precision hydrogen sulfide gas sensor and a conductivity sensor are configured in the acidification reactor to obtain the rate data of sulfide release in real time;

[0161] The feedback control system monitors the sulfide release rate and provides real-time instant feedback on the acidification reaction: if the detected sulfide release rate is lower than expected, the acid amount is automatically increased; if the release rate is too high, the acid amount is reduced to prevent over-acidification;

[0162] When the sulfide release rate approaches zero or stabilizes at a low level, the feedback control system automatically terminates the acidification reaction, preventing unnecessary extension of the reaction time and ensuring full release of sulfide at the same time;

[0163] The adaptive acidification control can be dynamically adjusted according to the characteristics of each water sample, ensuring the release of sulfide under optimal conditions and reducing the generation of by-products; at the same time, by precisely controlling the amount of acid used, the waste of chemical reagents is reduced, and the environmental protection and economy of the experiment are improved;

[0164] The feedback control system consists of:

[0165] Sensor inputs include: hydrogen sulfide gas sensor, pH sensor, conductivity sensor, which are used to monitor the hydrogen sulfide release rate r(t), liquid-phase pH value pH(t) and liquid-phase conductivity σ(t) in real time respectively, and t represents the monitoring time;

[0166] Reference set values: the set value of the expected hydrogen sulfide release rate r set (t), the set value of the liquid-phase pH pH set (t);

[0167] Control output: acid addition rate Q a (t);

[0168] State estimator: estimate the unmeasured state variables during the reaction process;

[0169] Multi-objective optimizer: optimize the acid addition rate and acidification time;

[0170] The objective function J(t) is defined in the feedback control system, including the sulfide release rate and the acidification process:

[0171] where σ set (t) is the target conductivity, α1, α2, α3 are weight parameters, and dt represents the time increment;

[0172] The nonlinear controller is used to dynamically adjust the acid solution addition rate to flexibly respond to the change of sulfide release rate:

[0173]

[0174] where Q a (t) represents the addition rate of the acid solution, K p represents the proportional control gain, which adjusts the error relationship between the acid solution rate and the sulfide release rate, and K d represents the derivative control gain, which is used to mitigate the impact of the rapidly changing sulfide release rate on the system.

[0175] K i represents the integral control gain, which is used to eliminate the steady-state error of the system. β1 and β2 represent the nonlinear adjustment coefficients, which are used to correct the acid solution addition rate. rmax represents the maximum value of the sulfide release rate, and pH opt represents the optimal pH value. represents the derivative operation with respect to time t. represents the change rate of the error between the expected hydrogen sulfide release rate and the actual release rate;

[0176] In the feedback control system:

[0177] The Kalman Filter is used for state estimation to predict the unmeasured reaction state variables;

[0178] The multi-objective optimization algorithm (particle swarm optimization or genetic algorithm) is used to dynamically optimize the acid solution addition rate Q a (t) and the reaction time t: The goal of the solution is to find the optimal Q a (t) and t to minimize the objective function J(t). The optimization result is fed back to the feedback control system in real time to update the acid solution addition strategy;

[0179] The triggering conditions for terminating the acidification reaction include:

[0180] The sulfide release rate is close to zero: when r(t) satisfies r(t) < ε r the system determines that the reaction is basically completed, where ε r is the minimum threshold;

[0181] The system state is stable: when both the pH value pH(t) and the conductivity σ(t) are stable within the preset range and no longer change significantly, the acidification reaction is terminated;

[0182] Achieving precise control of sulfide release in water samples has significant advantages in the following application scenarios:

[0183] In the scenario of high-concentration sulfide water samples, the system can automatically increase the amount of acid according to real-time monitoring data to achieve the complete release of sulfide;

[0184] In the scenario of low-concentration sulfide water samples, the system can reduce the amount of acid to avoid over-acidification and the generation of by-products;

[0185] In the scenario of a dynamically changing water sample environment, by adjusting in real time to cope with changes in environmental conditions, the stability of sulfide release is maintained;

[0186] Thereby reducing the waste of chemical reagents and improving the environmental friendliness and economy of the reaction;

[0187] In the blowing and trapping stage of step S4, real-time quantitative feedback and automatic correction are also carried out:

[0188] Integrate a spectroscopic analyzer and an electrochemical sensor in the blowing system to collect the concentration and release dynamics of hydrogen sulfide in real time;

[0189] The automatic correction system compares the real-time data with the expected release curve: If the detected release amount is lower than expected, it is immediately judged that there may be problems of insufficient acidification or insufficient blowing;

[0190] The automatic correction system automatically adjusts the acidification parameters or blowing parameters according to the abnormal situation to ensure that the sulfide release process meets the expectations and avoid the accumulation of errors affecting the final result;

[0191] By real-time feedback and automatic correction to respond to abnormal situations, maintain the high precision of the detection process and reduce the measurement error; The automatic correction mechanism reduces the detection failures caused by process abnormalities and improves the reliability and consistency of the overall detection;

[0192] In the blowing and trapping stage of step S4, the real-time quantitative feedback and automatic correction method is as follows:

[0193] The spectroscopic analyzer and electrochemical sensor integrated in the blowing system monitor the concentration and release dynamics of hydrogen sulfide in real time and transmit the concentration data to the feedback control system;

[0194] The spectroscopic analyzer is used to detect the optical properties of hydrogen sulfide and infer its concentration change; The electrochemical sensor directly measures the concentration of hydrogen sulfide in the solution to supplement the data of spectroscopic analysis;

[0195] The feedback control system compares the data collected in real time with the preset hydrogen sulfide release curve;

[0196] According to the comparison result, abnormal detection is carried out. If it is found that the release amount of hydrogen sulfide is lower than expected, a warning is given;

[0197] If it is detected that the release of hydrogen sulfide is insufficient and the acidification process has been completed, extend the blowing time or increase the gas flow rate;

[0198] The system is adjusted dynamically to respond in real time to changes in the monitored data until the release of hydrogen sulfide returns to the expected range;

[0199] Continue to monitor the release of hydrogen sulfide in real time after adjusting the parameters, and compare the new data with the corrected expected curve; if a new deviation is detected, make adjustments again;

[0200] The feedback loop continues until the release process of hydrogen sulfide is stable and conforms to the expected release curve.

[0201] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A fully automatic water sulfide acidification intelligent blowing system, characterized in that: include: The acidification reaction control module is responsible for the acidification reaction process of sulfide, including the addition of acid, reaction time control and dynamic adjustment of the acidification process; Sulfide release kinetics monitoring module, real-time monitoring of the generation rate of hydrogen sulfide gas; The quantitative feedback correction module is responsible for real-time monitoring of the amount of hydrogen sulfide released during the blowing process and automatically correcting any abnormalities that occur during the detection process; An automatic blowing and capturing module, which performs a blowing operation to blow hydrogen sulfide gas out of the acidification reaction and capture it into a specified solution; A result output module, including a data processing unit, processes the data collected by each module of the system and outputs the final sulfide content determination result; The result output module integrates the data of each sensor, performs calculations and corrects errors to obtain the sulfide concentration results; The acidification reaction control module includes: Acid delivery system, used to add acid to the reactor, the amount of addition is dynamically adjusted according to the control signal, and the control signal comes from the feedback control system; pH and conductivity sensors to monitor the pH and conductivity changes of the liquid phase in the reactor in real time; Feedback control system, based on sensor feedback data, adjusts the acid addition rate, parameter settings during the acidization process and reaction time; The sulfide release kinetics monitoring module includes: Hydrogen sulfide gas sensor, which detects the concentration change of hydrogen sulfide gas in the reactor in real time and calculates its generation rate; Data acquisition system, which collects sensor data and transmits it to the feedback control system for analysis; The quantitative feedback correction module includes: Spectrum analyzer, real-time monitoring of the concentration and changes of hydrogen sulfide during the blowing process; Electrochemical sensor, detects quantitative information of hydrogen sulfide and compares it with the preset curve; Automatic correction system, once an abnormality is detected, automatically adjusts the blowing parameters, including gas flow rate and blowing time; The automatic air purge capture module includes: Airflow control system to adjust airflow rate; a capture device to capture and dissolve hydrogen sulfide released from the gas; The operation process of the acidification reaction control module includes: The acid delivery system starts adding acid according to the initial set value; pH and conductivity sensors monitor the progress of the reaction in real time and feed data back to the feedback control system; The feedback control system dynamically adjusts the acid addition rate; When the sensor data reaches the set termination condition, the system stops the acidification reaction and enters the next stage; The operation process of the sulfide release kinetics monitoring module includes: The hydrogen sulfide gas sensor continuously collects gas concentration data during the reaction process; The data acquisition system transmits the gas concentration data to the feedback control system in real time; The feedback control system adjusts the parameter settings during the acidification process according to the changes in the gas generation rate; The operation process of the quantitative feedback correction module includes: During the blowing process, the spectrum analyzer and electrochemical sensor synchronously collect the concentration data of hydrogen sulfide; The system compares real-time data with a preset sulfide release curve; When the data is detected to deviate from the expected, the automatic correction system adjusts the acidification or blowing parameters to correct the errors in the process in real time; The operation process of the automatic air blowing and capturing module includes: After the acidification reaction is completed, the air blowing operation is started, and the air flow control system adjusts the air flow rate; The capture device receives and dissolves the hydrogen sulfide blown out from the reactor to complete quantitative capture; The result output is as follows: The data collected by each module is transmitted to the data processing unit, which performs calculation, correction and analysis to obtain the final result; the result output module generates an analysis report; The overall workflow of the fully automatic water sulfide acidification intelligent air blowing system includes: Step S1, initial setting, the user inputs the experimental conditions and water sample information, and the system automatically configures the initial parameters according to the input; Step S2, acidification process, the acidification reaction control module performs acidification operation according to real-time monitoring data and adaptively adjusts the acid amount and reaction time; A high-precision hydrogen sulfide gas sensor and conductivity sensor are installed in the acidification reactor to obtain real-time data on the rate of sulfide release; The feedback control system monitors the sulfide release rate and provides immediate feedback on the acidification reaction in real time: if the sulfide release rate is detected to be lower than expected, the acid amount is automatically increased; if the release rate is too high, the acid amount is reduced; When the sulfide release rate approaches zero or stabilizes at a low level, the feedback control system automatically terminates the acidification reaction; Step S3, sulfide release monitoring, the sulfide release kinetics monitoring module tracks the generation rate of hydrogen sulfide in real time; Step S4, blowing and capturing, the automatic blowing and capturing module is started to capture hydrogen sulfide gas; Step S5, real-time correction, the quantitative feedback correction module performs abnormal monitoring during the entire blowing process and performs instant correction of abnormal data; Step S6, outputting the results: after all the data have been processed and corrected, the final sulfide concentration result is output; The feedback control system consists of: The sensor input includes: hydrogen sulfide gas sensor, pH sensor, and conductivity sensor, which are used to monitor the hydrogen sulfide release rate r(t), liquid pH value pH(t), and liquid conductivity σ(t) in real time, respectively, where t represents the monitoring time; Reference setting value: expected hydrogen sulfide release rate setting value r set (t), liquid phase pH setting value pH set (t); Control output: Acid addition rate Q a (t); State Estimator: estimates the unmeasured state variables of the reaction process; Multi-objective optimizer: optimizes the acid addition rate and acidification time; The objective function J(t) is defined in the feedback control system, including the sulfide release rate and the acidification process: where σ set (t) is the target conductivity, α1, α2, α3 are weight parameters, and dt represents the time increment; A nonlinear controller is used to dynamically adjust the acid addition rate: Where Q a (t) represents the rate of addition of acid solution, K p Represents the proportional control gain, which adjusts the error relationship between the acid rate and the sulfide release rate, K d represents the differential control gain, which is used to mitigate the impact of the rapidly changing sulfide release rate on the system. K i represents the integral control gain, which is used to eliminate the system steady-state error. β1 and β2 represent the nonlinear adjustment coefficients, which are used to correct the acid addition rate. max Indicates the maximum value of sulfide release rate, pH opt Indicates the optimal pH value, represents the derivative operation with respect to time t, Indicates the rate of change of the error between the expected hydrogen sulfide release rate and the actual release rate; In a feedback control system: Use Kalman filter for state estimation to predict unmeasured reaction state variables; Dynamic optimization of acid addition rate Q using multi-objective optimization algorithm a (t) and reaction time t: The goal is to find the optimal Q a (t) and t, so that the objective function J(t) is minimized, and the optimization result is fed back to the feedback control system in real time to update the acid addition strategy; The acidification reaction termination conditions trigger: The sulfide release rate is close to zero: when r(t) satisfies r(t)<ε r When , the system determines that the reaction is complete, where ε r is the minimum threshold; System state is stable: When the pH value pH(t) and conductivity σ(t) are both stable within the preset range and no longer change significantly, the acidification reaction is terminated; In the blowing and capturing phase of step S4, real-time quantitative feedback and automatic correction are also performed: Integrate a spectrometer and an electrochemical sensor in the air blowing system to collect the concentration and release dynamics of hydrogen sulfide in real time; The automatic correction system compares the real-time data with the expected release curve: if the release volume is detected to be lower than expected, it will immediately determine that there may be a problem of insufficient acidification or insufficient blowing; The automatic correction system automatically adjusts the acidification parameters or blowing parameters according to abnormal conditions; In the blowing and capturing phase of step S4, the real-time quantitative feedback and automatic correction method is: The spectrometer and electrochemical sensor integrated in the air blowing system monitor the concentration and release dynamics of hydrogen sulfide in real time and transmit the concentration data to the feedback control system; The feedback control system compares the real-time collected data with the preset hydrogen sulfide release curve; Perform abnormal detection based on the comparison results, and issue a warning if the amount of hydrogen sulfide released is found to be lower than expected; If insufficient hydrogen sulfide release is detected and the acidification process is complete, extend the purge time or increase the gas flow rate; Dynamically adjust the system and respond to changes in monitored data in real time until the release of hydrogen sulfide returns to the expected range; Continue to monitor the release of hydrogen sulfide in real time after adjusting the parameters, and compare the new data with the revised expected curve; if new deviations are detected, make adjustments again; The feedback loop continues until the hydrogen sulfide release process is stable and follows the expected release profile.

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