Cyanide breaking process device based on spectrum online monitoring

Abstract

The invention discloses a cyanide breaking process device based on spectrum on-line monitoring, which comprises a spectrum on-line monitoring module, a cyanide breaking reaction tank group, a reaction control system, an intelligent decision-making module and an executing mechanism, and is characterized in that the spectrum on-line monitoring module is composed of a micro multichannel spectrum sensor provided with an array type LED light source and an independent light intensity feedback circuit; a bypass circulating pipeline is connected with the main treatment system and a filter is arranged to eliminate the interference of suspended matters; the cyanide breaking reaction tank group comprises an alkaline oxidation tank and an acid decomposition tank which are connected in series, each tank body is internally provided with a stirrer, a liquid level monitoring unit, a temperature control unit and a stirrer driving unit, the acid decomposition tank is provided with a PH sensor, and the intelligent decision module integrates an edge calculation unit and a cloud database, receives spectral data in real time and outputs a control instruction; the execution mechanism is composed of a sodium hypochlorite metering pump connected with an intelligent decision-making module, a PH regulator adding device and a central control unit containing a safety interlocking module.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wastewater treatment, in particular to a cyanide breaking process device based on spectral online monitoring. BACKGROUND

[0002] In the field of environmental protection technology, the optimization of cyanide-containing wastewater treatment process has always been one of the core issues of industrial wastewater treatment. The traditional cyanide breaking process converts the highly toxic cyanide into low-toxic substances through oxidation reaction, and its treatment effect directly affects the ecological environment safety and human health. With the expansion of industrial production scale and the tightening of environmental protection standards, the existing cyanide breaking technology gradually exposes common problems such as low automation degree, high operation cost and insufficient treatment stability, especially in the aspects of precise reagent dosing and reaction process monitoring, which restricts the intelligent upgrading of wastewater treatment system.

[0003] The existing cyanide breaking device has three major technical defects: first, the reagent dosing relies on past experience and lacks dynamic adjustment mechanism, which often causes waste of bleaching water and other oxidizing agents due to excessive dosing, or incomplete cyanide degradation due to insufficient dosing; second, the detection of key indicators such as hypochlorite and cyanate relies on offline sampling, with low monitoring frequency and data lag, which cannot provide timely feedback to adjust process parameters; third, the reaction progress judgment mainly relies on fixed residence time or excessive dosing strategy, which is difficult to optimize the treatment process in real time according to water quality fluctuations, resulting in problems such as low reagent utilization rate, large operation fluctuation and lack of intelligent control. Therefore, a cyanide breaking process device based on spectral online monitoring is proposed. SUMMARY

[0004] The present application provides the following technical scheme: a cyanide breaking process device based on spectral online monitoring, comprising: A spectral online monitoring module composed of a miniature multi-channel spectral sensor and a light path calibration component, and the miniature multi-channel spectral sensor uses an array type LED light source and is configured with an independent light intensity feedback circuit, the spectral online monitoring module is connected with a bypass circulation pipeline, and the bypass circulation pipeline is connected with a filter; A cyanide breaking reaction tank group composed of an alkaline oxidation tank and an acidic decomposition tank, and a stirrer is additionally provided in the inner cavity of the alkaline oxidation tank and the acidic decomposition tank, the alkaline oxidation tank and the acidic decomposition tank are communicated with the filter, and a pH sensor is arranged in the acidic decomposition tank; A reaction control system arranged in the inner cavity of the cyanide breaking reaction tank group, and the reaction control system comprises a liquid level monitoring unit, a temperature control unit and a stirrer driving unit arranged in the alkaline oxidation tank and the acidic decomposition tank; An intelligent decision module connected with the spectral online monitoring module, and the intelligent decision module comprises an edge computing unit and a cloud database; The execution mechanism is composed of a sodium hypochlorite metering pump, a PH regulator adding device and a central control unit, and the sodium hypochlorite metering pump is connected with the intelligent decision module and the alkaline oxidation tank respectively, the PH regulator adding device is connected with the intelligent decision module and the PH sensor respectively, and the central control unit comprises a safety interlocking module.

[0005] Wastewater pretreatment and spectrum sampling: Before the cyanide-containing wastewater enters the cyanide-breaking reaction tank group through the water inlet pipeline, it is first diverted to the spectrum online monitoring module through the bypass circulation pipeline, the micro multi-channel spectrum sensor emits a specific wavelength light beam through an array type LED light source, penetrates the wastewater sample, and is corrected in real time by an independent light intensity feedback circuit for light path attenuation deviation, and the light path calibration assembly adjusts the light source emission angle and the optical path length dynamically to ensure the spectrum data collection accuracy; after the wastewater sample passes through the filter to remove large particle impurities, a representative monitoring sample is formed; Real-time spectrum analysis and data transmission: The micro multi-channel spectrum sensor transmits the collected spectrum data to the intelligent decision module, the edge computing unit pre-processes the original spectrum, including baseline correction, noise filtering and characteristic wavelength extraction, identifies the cyanide concentration, pH value and coexisting interference substance information in the wastewater, and uploads the key parameters to the cloud database through an encryption protocol for comparison and analysis with the historical data model; Dynamic regulation of reaction conditions The intelligent decision module generates control instructions according to the spectrum analysis results, combined with the liquid level monitoring unit and the temperature control unit feedback data of the alkaline oxidation tank and the acid decomposition tank: Alkaline oxidation stage: the sodium hypochlorite metering pump accurately adds oxidizing agent to the alkaline oxidation tank, the stirrer mixes the reaction liquid at a preset speed, and the temperature control unit maintains the reaction temperature within a certain range; Acid decomposition stage: the PH sensor monitors the pH value of the acid decomposition tank in real time, and the PH regulator adding device automatically adds acid and alkali reagents according to the instructions of the intelligent decision module to ensure that the pH value is stable within a certain range; Safety interlocking and process optimization: The safety interlocking module of the central control unit continuously monitors the liquid level, temperature and equipment running state. When abnormal parameters are detected, the following protection mechanisms are triggered immediately: Cut off the power source of the sodium hypochlorite metering pump and the PH regulator adding device; Start the emergency discharge valve to guide the reaction liquid into the safety tank; Generate fault codes and maintenance suggestions through the cloud database; Treatment efficiency verification and cycle feedback: The treated wastewater is introduced into the on-line spectrum monitoring module again through the bypass circulation pipeline to verify whether the cyanide removal rate meets the standard, and if not, the intelligent decision module automatically adjusts the oxidant dosage and reaction time to form a closed loop control circuit.

[0006] Preferably, the light path calibration assembly of the micro multi-channel spectrum sensor comprises a built-in standard reference plate and an automatic calibration program, and the arrayed LED light source is connected with a micro electronic controller.

[0007] In the system initialization stage, the built-in standard reference plate is automatically moved into the light path by a mechanical driving device, the arrayed LED light source emits a calibration light beam with a specific wavelength combination under the drive of the micro electronic controller, the light path calibration assembly guides the calibration light beam to the spectrum detection unit through a light splitting system, and compares it with a preset standard spectrum curve, the micro electronic controller dynamically adjusts the drive current and exposure time parameters of the LED light source according to the difference of the real-time collected spectrum data, and simultaneously corrects the slight displacement deviation of the optical element through a closed loop feedback mechanism, and after the light path alignment is completed, the reference plate is automatically moved out of the working light path.

[0008] Preferably, a bidirectional flow regulating valve is arranged at the corresponding position of the bypass circulation pipeline, and a differential pressure monitoring unit is arranged on the filter.

[0009] When the system detects that the flow of the main treatment pipeline is abnormal, the bidirectional flow regulating valve adjusts the opening degree in two directions through the valve core driven by a stepping motor according to the real-time data fed back by the differential pressure monitoring unit, increases the bypass circulation flow to dilute high-concentration pollutants when adjusting in the forward direction, and controls the backflow ratio to prevent the treatment unit from being overloaded when adjusting in the reverse direction. The differential pressure monitoring unit adopts a double diaphragm differential pressure sensor to continuously collect the pressure difference between the inlet and outlet of the filter, and triggers an automatic backwashing program when the pressure difference exceeds the set threshold.

[0010] Preferably, a graphite heater is arranged at the corresponding position of the alkaline oxidation tank, and a temperature sensor and a temperature control unit are arranged in the alkaline oxidation tank to form a closed loop control system, and the PH sensor comprises a main sensor and a standby sensor.

[0011] The graphite heater is arranged in the oxidation tank wall in a three-dimensional spiral winding structure, the temperature sensor collects multi-point temperature data in the tank in real time and transmits them to the temperature control unit, the control unit calculates the heating power demand through a fuzzy PID algorithm, and drives a solid state relay to realize stepless power regulation, when the temperature in the tank deviates from the set value, the system automatically starts the compensation heating program, and simultaneously adjusts the oxidant dosage rate to maintain the optimal reaction temperature condition.

[0012] Preferably, the stirrer driving unit comprises a frequency converter and a torque monitoring module, and a flow guide cylinder structure is arranged at the corresponding position of the acid decomposition tank.

[0013] The variable frequency speed regulator adjusts the motor output frequency according to the ORP value and fluid viscosity parameters in the acid decomposition tank through a vector control algorithm, the torque monitoring module adopts a non-contact magneto-electric sensor to collect the stirring shaft torque data in real time and establish a dynamic torque curve, when abnormal torque fluctuation is detected, the system automatically reduces the rotating speed and starts the cleaning program of the inner wall of the flow guide cylinder to prevent mechanical jam caused by the deposition of crystalline substances.

[0014] Preferably, the edge computing unit of the intelligent decision-making module is configured with a data cleaning module, and the cloud database stores characteristic spectrum libraries of wastewater in different industries.

[0015] The data cleaning module performs baseline correction, scattering correction and outlier rejection processing on the original spectral data, removes high-frequency noise by using a wavelet transform algorithm, extracts characteristic wavelengths from the cleaned data through the edge computing unit, and matches the extracted characteristic wavelengths with the characteristic spectrum libraries of wastewater in different industries stored in the cloud database, generates an optimal treatment scheme after weighted scoring of the matching results, and synchronously updates the local knowledge base.

[0016] Preferably, the sodium hypochlorite metering pump is respectively configured with a pulse damper and a back pressure valve at the corresponding positions, and the pH adjuster dosing device adopts a double-pump redundant design.

[0017] The pulse damper absorbs the metering pump discharge pulse through an elastic diaphragm to control the flow fluctuation amplitude within a certain range, and the back pressure valve maintains the pipeline pressure stable to prevent metering errors caused by sodium hypochlorite solution vaporization, when the main metering pump fails, the standby pump is automatically started through a pressure switch signal, the double-pump switching time is less than a certain time, and the dosing pipeline continuously maintains a positive pressure state.

[0018] Preferably, the data transmission link of the spectral online monitoring module is configured with a bidirectional SSL / TLS encryption protocol, and the cloud database establishes a time-stamped wastewater characteristic spectrum traceability file.

[0019] The data transmission link adopts a bidirectional SSL / TLS encryption protocol, generates a digital signature certificate at the data acquisition end, the cloud server verifies the data integrity through an asymmetric encryption algorithm, the traceability file system adds a time stamp and a device identification code to each spectrum data, establishes a three-dimensional traceability model containing the processing stage, water quality parameters and equipment state, and supports playing back the processing process according to the time sequence.

[0020] Preferably, the alkaline oxidation tank and the acid decomposition tank of the cyanide breaking reaction tank group are both provided with an electromagnetic emptying valve at the bottom, and the electromagnetic emptying valve and the liquid level monitoring unit constitute an interlocking protection circuit.

[0021] The electromagnetic emptying valve adopts corrosion-resistant hastelloy material, and through the liquid level monitoring unit, the liquid level height in the pool is fed back in real time; when the liquid level exceeds the safety threshold or the emergency stop signal is detected, the interlocking protection circuit immediately cuts off the feed valve and starts the emptying program; during the emptying process, the residual liquid amount in the pool is continuously monitored, and when the liquid level drops to the set lower limit, the emptying valve is automatically closed to prevent air from entering the reaction system.

[0022] Preferably, the central control unit is built-in with a fault self-diagnosis module, and the fault self-diagnosis module contains a multi-parameter threshold comparison array and a self-learning type diagnosis engine.

[0023] The multi-parameter threshold comparison array continuously monitors multiple process parameters such as temperature, pressure and flow, and triggers the self-learning type diagnosis engine when an abnormal value is detected; the engine calls the historical fault database for pattern matching, generates a fault code and a processing suggestion in combination with an expert rule base; for a new type of fault mode, the engine performs probability reasoning through a Bayesian network, automatically updates the diagnosis model and pushes warning information to an operation and maintenance terminal.

[0024] Compared with the prior art, the present application provides a cyanide breaking process device based on online spectrum monitoring, which has the following beneficial effects: In terms of medicament dosing control, the spectrum online monitoring module and the intelligent decision module form a closed-loop control system; the micro multi-channel spectrum sensor cooperates with an independent light intensity feedback circuit to obtain concentration data of key components such as hypochlorite and cyanate in water in real time; in combination with the instant processing capacity of the edge computing unit and the historical data support of the cloud database, the optimal medicament dosing amount can be dynamically calculated; this coupling mechanism of real-time monitoring and intelligent decision not only avoids the problem of medicament waste caused by experience-based dosing, but also ensures the thoroughness of cyanide degradation through accurate closed-loop control, and significantly improves the utilization rate of medicaments; The bypass circulation pipeline is connected between the spectrum sensor and the main treatment system, and cooperates with the pre-filter to effectively remove suspended matter interference, thereby ensuring the real-time and accuracy of spectrum detection data; the online monitoring architecture enables the detection frequency of key indicators to be improved from the traditional hourly level to the second level; in combination with the fast response capability of the intelligent decision module, millisecond-level adjustment of process parameters can be realized; this high-frequency monitoring and instant feedback mechanism ensures that the treatment system is always in an optimal working state, and effectively eliminates the process fluctuations caused by data lag; Through the combination of double-pool segmented treatment and intelligent regulation, the traditional fixed residence time limit is broken; the independent liquid level monitoring units and temperature control units of the alkaline oxidation pool and the acidic decomposition pool cooperate with the water quality fluctuation prediction model of the intelligent decision module to dynamically adjust the residence time of each reaction stage according to real-time water quality parameters; the coordinated control of the agitator driving unit and the medicament dosing system ensures that the oxidation and decomposition process always maintains the best reaction kinetics conditions, thereby avoiding the waste of energy caused by excessive treatment and preventing the discharge risk caused by insufficient treatment. Attached Figure Description

[0025] Figure 1 This is a flowchart of the process structure of the present invention.

[0026] Explanation of reference numerals in the attached figures: 1. Online Spectrum Monitoring Module; 101. Miniature Multi-channel Spectrum Sensor; 102. Bypass Circulation Pipeline; 104. Filter; 2. Cyanide Decomposition Reaction Tank Group; 201. Alkaline Oxidation Tank; 202. Acidic Decomposition Tank; 203. Stirrer; 204. pH Sensor; 3. Intelligent Decision Module; 301. Sodium Hypochlorite Metering Pump; 302. pH Adjuster Dosing Device. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 This invention provides a technical solution: a cyanide-crushing process device based on online spectral monitoring, comprising: The online spectral monitoring module 1 consists of a miniature multi-channel spectral sensor 101 and an optical path calibration component. The miniature multi-channel spectral sensor 101 adopts an array-type LED light source and is equipped with an independent light intensity feedback circuit. The online spectral monitoring module 1 is connected to a bypass circulation pipeline 102, and the bypass circulation pipeline 102 is connected to a filter 104. The cyanide-breaking reaction tank group 2 consists of an alkaline oxidation tank 201 and an acidic decomposition tank 202. Both the alkaline oxidation tank 201 and the acidic decomposition tank 202 are equipped with stirrers 203. The alkaline oxidation tank 201 and the acidic decomposition tank 202 are connected to the filter 104, and a pH sensor 204 is installed in the acidic decomposition tank 202. The reaction control system is located inside the cyanide destruction reaction tank group 2, and includes a liquid level monitoring unit, a temperature control unit and a stirrer drive unit located in the alkaline oxidation tank 201 and the acidic decomposition tank 202. The intelligent decision-making module 3 is connected to the online spectral monitoring module 1, and the intelligent decision-making module 3 includes an edge computing unit and a cloud database; The execution mechanism is composed of a sodium hypochlorite metering pump 301, a PH regulator doser 302 and a central control unit, and the sodium hypochlorite metering pump 301 is connected with the intelligent decision module 3 and the alkaline oxidation tank 201 respectively, the PH regulator doser 302 is connected with the intelligent decision module 3 and the PH sensor 204 respectively, and the central control unit comprises a safety interlocking module.

[0029] Wastewater pretreatment and spectrum sampling: Before the cyanide-containing wastewater enters the cyanide-breaking reaction tank group 2 through the water inlet pipeline, it is first shunted to the spectrum online monitoring module 1 through the bypass circulation pipeline 102, the micro multi-channel spectrum sensor 101 emits a light beam of a specific wavelength through an array type LED light source, penetrates through the wastewater sample, and is corrected in real time by an independent light intensity feedback circuit for light path attenuation deviation, and a light path calibration assembly adjusts the light source emission angle and the light path length dynamically to ensure the spectrum data collection accuracy; after the wastewater sample passes through the filter 104 to remove large particle impurities, a representative monitoring sample is formed; Real-time spectrum analysis and data transmission: The micro multi-channel spectrum sensor 101 transmits the collected spectrum data to the intelligent decision module 3, and an edge computing unit pre-processes the original spectrum, including baseline correction, noise filtering and characteristic wavelength extraction, identifies the cyanide concentration, pH value and coexisting interference substance information in the wastewater, and uploads the key parameters to the cloud database through an encryption protocol for comparison and analysis with the historical data model; Dynamic regulation of reaction conditions The intelligent decision module 3 generates control instructions according to the spectrum analysis results, in combination with the liquid level monitoring unit and the temperature control unit feedback data of the alkaline oxidation tank 201 and the acid decomposition tank 202: Alkaline oxidation stage: the sodium hypochlorite metering pump 301 accurately doses the oxidizing agent to the alkaline oxidation tank 201, the stirrer 203 mixes the reaction liquid at a preset speed, and the temperature control unit maintains the reaction temperature within a certain range; Acid decomposition stage: the PH sensor 204 monitors the pH value of the acid decomposition tank 202 in real time, and the PH regulator doser 302 automatically supplements the acid and alkali reagents according to the instructions of the intelligent decision module 3, so as to ensure that the pH value is stable within a certain range; Safety interlocking and process optimization: The safety interlocking module of the central control unit continuously monitors the liquid level, temperature and equipment running state. When abnormal parameters are detected, the following protection mechanisms are triggered immediately: Cut off the power source of the sodium hypochlorite metering pump 301 and the PH regulator doser 302; Start the emergency discharge valve to guide the reaction liquid into the safety storage tank; Generate fault codes and maintenance suggestions through the cloud database; Treatment efficiency verification and cycle feedback: The treated wastewater is re-entered into the spectral online monitoring module 1 through the bypass circulation pipeline 102 to verify whether the cyanide removal rate meets the standard, and if not, the intelligent decision module 3 automatically adjusts the oxidant dosage and reaction time to form a closed-loop control circuit. Real-time online monitoring and closed-loop control: Through the synergistic effect of the spectral online monitoring module 1 and the intelligent decision module 3, the cyanide concentration and reaction conditions are responded within minutes, compared with the traditional offline detection method, the data feedback delay is reduced, the oxidant dosage deviation is controlled within a certain range, the processing efficiency is significantly improved, and the reagent waste is reduced. Two-stage reaction pool group synergistic optimization: The hierarchical design of the alkaline oxidation pool 201 and the acidic decomposition pool 202, combined with the independent stirrer 203 and the temperature control unit, enables the cyanide oxidation reaction and acidification decomposition process to be carried out under optimal conditions, and can improve the total cyanide removal rate and shorten the reaction time. Intelligent decision and edge-cloud collaborative computing: The edge computing unit realizes fast local data processing, and the cloud database provides massive historical data support, and the combination of the two makes the system have self-adaptive learning ability, shortens the decision response time when dealing with water quality fluctuations, and improves the frequency of process parameter adjustment. Multi-parameter safety interlock protection: The central control unit integrates multi-dimensional monitoring of liquid level, temperature and equipment state, etc., and cooperates with the safety interlock module to realize emergency disposal within a certain time after failure occurs. This design reduces the number of unplanned shutdowns and reduces the safety risk of operators. Modular design and maintenance convenience: Each functional module adopts standardized interface design, and the miniature multi-channel spectral sensor 101 and the actuator support hot plug replacement, which shortens the on-site maintenance time and reduces the equipment life cycle maintenance cost. Anti-interference ability and data reliability: The array type LED light source is combined with an independent light intensity feedback circuit to effectively eliminate the interference of water color, turbidity and bubbles on spectral detection, so that the cyanide concentration detection error is stable within a certain range, and the data reliability is improved.

[0030] The light path calibration assembly of the miniature multi-channel spectral sensor 101 includes a built-in standard reference plate and an automatic calibration program, and the array type LED light source is connected with a microelectronic controller.

[0031] In the system initialization phase, the built-in standard reference plate is automatically moved into the optical path by mechanical driving device, the array LED light source emits calibration light beam of specific wavelength combination under the driving of microelectronic controller, the optical path calibration component guides the calibration light beam to the spectral detection unit through the light splitting system, and compares with the preset standard spectral curve, the microelectronic controller dynamically adjusts the driving current and exposure time parameters of the LED light source according to the real-time collected spectral data difference, and at the same time, the small displacement deviation of the optical element is corrected through the closed-loop feedback mechanism, and after the optical path alignment is completed, the reference plate is automatically moved out of the working optical path; The boot self-calibration is realized through the built-in standard reference plate, and the influence of environmental temperature and humidity changes and mechanical vibration on the spectral collection accuracy is eliminated; The microelectronic controller can automatically optimize the light source parameters for different wastewater components, and improve the characteristic spectral recognition rate under complex water quality conditions; The automatic calibration program reduces the frequency of manual maintenance and prolongs the continuous operation cycle of the equipment.

[0032] The bypass circulation pipeline 102 is provided with a bidirectional flow regulating valve at the corresponding position, and the filter 104 is provided with a differential pressure monitoring unit.

[0033] When the system detects that the main treatment pipeline flow is abnormal, the bidirectional flow regulating valve adjusts the opening degree in both directions through the stepping motor driven valve core according to the real-time data fed back by the differential pressure monitoring unit, increases the bypass circulation flow to dilute high-concentration pollutants during forward adjustment, and controls the backflow ratio to prevent the treatment unit from being overloaded during reverse adjustment. The differential pressure monitoring unit adopts a double diaphragm differential pressure sensor to continuously collect the pressure difference between the inlet and outlet of the filter 104, and triggers the automatic backwashing program when the pressure difference exceeds the set threshold; The bidirectional flow regulating valve realizes the dynamic balance of the treatment load, and avoids the system shutdown caused by the blockage of the single-sided pipeline; The differential pressure monitoring and backwashing linkage design prolongs the service life of the filter 104 core; The bypass circulation mechanism improves the adaptability of the system to water quality fluctuations.

[0034] A graphite heater is additionally arranged at the corresponding position of the alkaline oxidation tank 201, and a temperature sensor and a temperature control unit are additionally arranged in the alkaline oxidation tank 201 to form a closed-loop control system, and the PH sensor 204 includes a main sensor and a backup sensor.

[0035] The graphite heater is arranged on the oxidation tank wall in a three-dimensional spiral winding structure, the temperature sensor collects multi-point temperature data in the tank in real time and transmits them to the temperature control unit, the control unit calculates the heating power demand through the fuzzy PID algorithm, and drives the solid-state relay to realize stepless power regulation. When the temperature in the tank deviates from the set value, the system automatically starts the compensation heating program, and at the same time, the oxidant addition rate is adjusted to maintain the optimal reaction temperature condition; The corrosion resistance of the graphite heater meets the long-term use requirement in strong alkaline environment. The closed-loop control system controls the oxidation reaction temperature fluctuation range within a certain range, and improves the cyanide removal rate. The design of the main and standby dual-PH sensors 204 ensures pH value monitoring redundancy, and single-point failure does not affect the continuous operation of the system.

[0036] The stirrer driving unit includes a frequency converter and a torque monitoring module, and a flow guide cylinder structure is additionally provided at the corresponding position of the acid decomposition tank 202.

[0037] The frequency converter adjusts the motor output frequency according to the ORP value and fluid viscosity parameters in the acid decomposition tank 202 through a vector control algorithm. The torque monitoring module uses a non-contact magneto-electric sensor to collect real-time stirring shaft torque data and establish a dynamic torque curve. When abnormal torque fluctuation is detected, the system automatically reduces the speed and starts the inner wall cleaning program of the flow guide cylinder to prevent mechanical jamming caused by crystalline deposits. The frequency conversion reduces the stirring energy consumption while maintaining the turbulence intensity in the tank. The torque monitoring module provides early warning of mechanical failure and reduces unplanned downtime. The flow guide cylinder structure optimizes the flow field distribution, shortening the acid decomposition reaction time.

[0038] The edge computing unit of the intelligent decision-making module 3 is configured with a data cleaning module, and the cloud database stores characteristic spectrum libraries of wastewater from different industries.

[0039] The data cleaning module performs baseline correction, scattering correction, and outlier rejection processing on the original spectral data. Wavelet transform algorithm is used to remove high-frequency noise. The cleaned data is extracted for characteristic wavelengths by the edge computing unit, and is matched with multiple industry wastewater characteristic spectrum libraries stored in the cloud database for similarity. The matching result is weighted and scored to generate the optimal treatment scheme, and the local knowledge base is updated synchronously. Data cleaning improves the accuracy of spectral identification and reduces false positives. The cloud spectrum library covers wastewater data from typical industries such as electroplating, chemical industry, and pharmaceutical industry, supporting incremental learning of new industry spectra. The edge-cloud collaborative architecture realizes real-time optimization of processing parameters, and improves the accuracy of reagent dosage.

[0040] The corresponding positions of the sodium hypochlorite metering pump 301 are respectively configured with a pulse damper and a back pressure valve, and the PH regulator dosing device 302 adopts a dual-pump redundancy design.

[0041] The pulse damper absorbs the metering pump discharge pulse through the elastic diaphragm to control the flow fluctuation amplitude within a certain range, the back pressure valve maintains the pipeline pressure stable, prevents the metering error caused by sodium hypochlorite solution vaporization, when the main metering pump fails, the standby pump is automatically started through the pressure switch signal, the double pump switching time is less than a certain time, and the dosing pipeline continuously maintains a positive pressure state; The pulse damper eliminates the water hammer effect and prolongs the service life of the pipeline system; The double pump redundancy design improves the system availability and meets the continuous production requirements; The back pressure valve prevents solution backflow and avoids crystallization of the one-way valve of the metering pump.

[0042] The data transmission link of the spectrum online monitoring module 1 is configured with a bidirectional SSL / TLS encryption protocol, and the cloud database establishes a timestamp-indexed wastewater characteristic spectrum traceability archive.

[0043] The data transmission link adopts a bidirectional SSL / TLS encryption protocol, generates a digital signature certificate at the data acquisition end, and the cloud server verifies the data integrity through an asymmetric encryption algorithm. The traceability archive system adds a timestamp and a device identification code to each spectrum data, establishes a three-dimensional traceability model containing the processing stage, water quality parameters, and equipment status, and supports playback of the processing process in chronological order. The encrypted transmission meets the third-level security requirements of the Cybersecurity Law and prevents monitoring data tampering; The timestamp index improves the efficiency of abnormal data traceability and meets the environmental protection supervision requirements; The traceability archive provides full life cycle data support for process optimization.

[0044] The alkaline oxidation tank 201 and the acidic decomposition tank 202 of the cyanogen breaking reaction tank group 2 are each provided with an electromagnetic emptying valve at the bottom, and the electromagnetic emptying valve and the liquid level monitoring unit constitute an interlocking protection circuit.

[0045] The electromagnetic emptying valve is made of corrosion-resistant Hastelloy material, and the liquid level in the tank is fed back in real time through the liquid level monitoring unit. When the liquid level exceeds the safety threshold or an emergency shutdown signal is detected, the interlocking protection circuit immediately cuts off the feed valve and starts the emptying program. The residual liquid in the tank is continuously monitored during the emptying process, and the emptying valve is automatically closed when the liquid level drops to the set lower limit to prevent air from entering the reaction system; The response time of the electromagnetic emptying valve is less than a certain time, avoiding the risk of overpressure of the tank body; The liquid level interlocking design eliminates the safety hazards of manual emptying operation; The automatic emptying function shortens the equipment restart preparation time.

[0046] The central control unit is built-in with a fault self-diagnosis module, and the fault self-diagnosis module includes a multi-parameter threshold comparison array and a self-learning type diagnosis engine.

[0047] Multi-parameter threshold comparison array continuously monitors multiple process parameters such as temperature, pressure and flow, triggers self-learning diagnostic engine when abnormal values are detected, engine calls historical fault database for pattern matching, generates fault code and treatment suggestion combined with expert rule base, for new fault pattern, engine performs probabilistic inference through Bayesian network, automatically updates diagnostic model and pushes early warning information to operation and maintenance terminal; Fault self-diagnosis covers above common equipment fault types; Self-learning engine shortens new fault identification period; Diagnostic report contains maintenance guidance video link, reduces on-site maintenance difficulty.

[0048] The scheme: the cyanide-containing wastewater enters the cyanide-breaking reaction tank group 2 through the water inlet pipeline first, and is then shunted to the spectrum online monitoring module 1 through the bypass circulation pipeline 102. The micro multi-channel spectrum sensor 101 emits a specific wavelength light beam through an array type LED light source, penetrates the wastewater sample, and is then corrected in real time by an independent light intensity feedback circuit for light path attenuation deviation. The light path calibration assembly adjusts the light source emission angle and the optical path length dynamically to ensure the spectrum data acquisition accuracy. After the wastewater sample passes through the filter 104 to remove large particle impurities, a representative monitoring sample is formed; The micro multi-channel spectrum sensor 101 transmits the collected spectrum data to the intelligent decision module 3. The edge computing unit pre-processes the original spectrum, including baseline correction, noise filtering and characteristic wavelength extraction, identifies the cyanide concentration, pH value and coexisting interference substance information in the wastewater, and uploads the key parameters to the cloud database through an encryption protocol for comparison and analysis with the historical data model.

[0049] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0050] Although the embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A process device for on-line monitoring of cyanogen destruction based on spectroscopy, characterized in that The utility model relates to a kind of wastewater treatment system, including: Spectrum online monitoring module (1) is composed of miniature multichannel optical spectrum sensor (101) and light path calibration component, and miniature multichannel optical spectrum sensor (101) uses array type LED light source and is equipped with independent light intensity feedback circuit, the spectrum online monitoring module (1) is connected with bypass circulation pipeline (102), and bypass circulation pipeline (102) is connected with filter (104); The cyanide breaking reaction pool group (2) is composed of alkaline oxidation tank (201) and acidic decomposition tank (202), and the inner cavity of alkaline oxidation tank (201) and acidic decomposition tank (202) is additionally provided with stirrer (203), the alkaline oxidation tank (201) and acidic decomposition tank (202) are communicated with filter (104), and a PH sensor (204) is arranged in the acidic decomposition tank (202); The reaction control system is arranged in the inner cavity of the cyanide breaking reaction pool group (2), and the reaction control system includes a liquid level monitoring unit, a temperature control unit and a stirrer driving unit arranged in the alkaline oxidation tank (201) and the acidic decomposition tank (202); The intelligent decision module (3) is connected with the spectrum online monitoring module (1), and the intelligent decision module (3) includes an edge computing unit and a cloud database; The execution mechanism is composed of a sodium hypochlorite metering pump (301), a PH regulator doser (302) and a central control unit, and the sodium hypochlorite metering pump (301) is connected with the intelligent decision module (3) and the alkaline oxidation tank (201) respectively, the PH regulator doser (302) is connected with the intelligent decision module (3) and the PH sensor (204) respectively, and the central control unit includes a safety interlocking module.

2. A process device for the on-line monitoring of the breaking of cyanogen based on spectroscopy according to claim 1, characterized in that The light path calibration component of the miniature multichannel optical spectrum sensor (101) includes a built-in standard reference plate and an automatic calibration program, and the array type LED light source is connected with a microelectronic controller.

3. A process device for the on-line monitoring of the breaking of cyanogen based on spectroscopy according to claim 1, characterized in that A bidirectional flow regulating valve is arranged at the corresponding position of the bypass circulation pipeline (102), and the filter (104) is provided with a differential pressure monitoring unit.

4. The process device for breaking cyanide based on online monitoring of spectrum according to claim 1, characterized in that: A graphite heater is additionally arranged at the corresponding position of the alkaline oxidation tank (201), and a temperature sensor and a temperature control unit are additionally arranged in the alkaline oxidation tank (201) to form a closed-loop control system, and the PH sensor (204) includes a main sensor and a backup sensor.

5. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that The stirrer driving unit includes a frequency converter and a torque monitoring module, and a flow guide cylinder structure is additionally arranged at the corresponding position of the acidic decomposition tank (202).

6. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that The edge computing unit of the intelligent decision module (3) is provided with a data cleaning module, and the cloud database stores a characteristic spectrum library of wastewater in different industries.

7. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that A pulse damper and a back pressure valve are arranged at the corresponding position of the sodium hypochlorite metering pump (301) respectively, and the PH regulator doser (302) adopts a double-pump redundant design.

8. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that: The data transmission link of the spectrum online monitoring module (1) is provided with a bidirectional SSL / TLS encryption protocol, and the cloud database establishes a timestamp-indexed wastewater characteristic spectrum traceability file.

9. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that: The base oxidation tank (201) and the acid decomposition tank (202) of the cyanide breaking reaction tank group (2) are provided with electromagnetic emptying valves at the bottom, and the electromagnetic emptying valves and the liquid level monitoring unit constitute an interlocking protection circuit.

10. A process device for on-line monitoring of cyanogen destruction based on spectroscopy according to claim 1, characterized in that The central control unit is internally provided with a fault self-diagnosis module, and the fault self-diagnosis module comprises a multi-parameter threshold comparison array and a self-learning type diagnosis engine.

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