Real-time monitoring three waste circulating treatment method and system based on PID algorithm optimization

Abstract

The present application belongs to the field of pollutant treatment, and discloses a real-time monitoring three waste circulating treatment method and system based on PID algorithm optimization, comprising: setting pollutant emission standard, inputting the pollutant into an online mass spectrometer for component analysis and deviation calculation, if the pollutant meets the emission standard, discharging the pollutant; if the pollutant does not meet the emission standard, spraying the gas and solid in the pollutant which does not meet the emission standard, respectively performing component analysis on the gas and solid after spraying treatment, if meeting the emission standard, discharging; if not meeting the emission standard, treating; extracting the liquid after spraying treatment and the liquid in the pollutant which does not meet the emission standard, performing vacuum evaporation and alkali treatment, discharging the water phase and organic phase, and storing and recycling the solid phase. The technical scheme of the present application can recycle and reuse the solvent and heavy metal catalyst of reaction, thereby realizing the harmless treatment of waste.

Description

Technical Field

[0001] This invention belongs to the field of pollutant treatment, and in particular relates to a real-time monitoring method and system for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization. Background Technology

[0002] With increasing emphasis on ecological civilization, higher demands are being placed on the green development of the chemical industry. Chemical pollution has a significant impact on the environment, hindering sustainable development. However, waste is a resource in the wrong place; finding an effective way to utilize it rationally can yield enormous value. Green chemistry requires minimizing the generation of pollutants during chemical production. To achieve green chemistry, besides improving reaction efficiency through controlled chemical reaction conditions and optimized routes, the most important aspect is real-time monitoring and treatment of the three wastes (waste gas, wastewater, and solid waste) after the reaction to reduce environmental pollution. Waste that can be recycled should be enriched and collected to improve economic efficiency. Organic chemistry is characterized by long reaction times, complex processes, and numerous byproducts and intermediates. Therefore, in addition to higher requirements for product purification, it also presents challenges to waste treatment technologies. The three wastes generated by chemical plants contain solvents and various intermediates produced during reactions. Although these intermediates are present in small quantities, they are significant sources of environmental pollution. The first step in efficiently treating these three wastes is to clearly define their types, concentrations, and quantities. Traditional waste treatment technologies often employ sampling points at various points along pipelines to collect samples, which are then transmitted back to the laboratory for analysis using sensors or manual sampling. This method has the following drawbacks:

[0003] 1. Node setting is difficult. According to chemical kinetics, the reaction inside the pipeline continues, and the dynamic changes of various components inside the pipeline are complex. The selection of node setting has a large degree of selectivity and uncontrollability. If the node setting is unreasonable, it will have a huge impact on the results, and may even lead to wrong conclusions, which will not be able to correctly guide production.

[0004] 2. The long detection time makes it impossible to monitor the real-time dynamics of each pipeline, assess the treatment of waste in real time, and adjust the amount of reactant in real time, which can easily lead to a large amount of material waste and is not conducive to improving the economic efficiency of the reaction.

[0005] 3. Human error is significant. Laboratory testing and manual switch adjustments are limited by the operational skills of different staff members, leading to substantial differences in test results among individuals. Furthermore, under certain specific conditions, manual sampling can cause irreversible damage to the human body, which is inconsistent with the people-centered development philosophy.

[0006] 4. Lack of trace detection methods. Conventional sensors are generally thermal conductivity sensors, electrical conductivity sensors, etc. The characteristic of these sensors is that they can only perform specific tests on specific substances, and cannot efficiently determine all intermediates and trace substances in the reaction process. Therefore, qualitative and quantitative capabilities are lacking.

[0007] 5. The detection process is complex and involves many steps, making it impossible to quickly and reliably trace trace sources and components of contaminants within pipelines. Summary of the Invention

[0008] The purpose of this invention is to provide a real-time monitoring method and system for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization, so as to solve the problems existing in the prior art.

[0009] To achieve the above objectives, this invention provides a real-time monitoring method for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization, comprising:

[0010] Step 1: Set pollutant emission standards and input pollutants into an online mass spectrometer for the first component analysis;

[0011] Step 2: Calculate the deviation between the pollutant emission standard and the first component analysis result. Based on the calculation result, determine whether the pollutant meets the emission standard. If the first component analysis result is less than the pollutant emission standard, the pollutant meets the emission standard and is discharged. If the first component analysis result is greater than the pollutant emission standard, the pollutant does not meet the emission standard, and proceed to Step 3.

[0012] Deviation Calculation: In this embodiment, the required pollution standard value is set via CAN communication. For example, if the benzene emission value is set to 10 and the pollution value fed back by the online mass spectrometer is 20, the spray volume is increased according to the deviation. By changing the spray volume of the spray system, high-precision range control of the system is achieved. Using this PID-controlled fully automatic waste pollution control system, the set spray chambers can be dynamically adjusted simultaneously with accurate feedback.

[0013] Step 3: Spray the gaseous and solid pollutants that do not meet the emission standards. After spraying, obtain the sprayed liquid, gas, and solid. Perform a second component analysis on the sprayed gas and the sprayed solid. Based on the results of the second component analysis, determine whether the sprayed gas and solid meet the emission standards. If they meet the emission standards, discharge them; if they do not meet the emission standards, adjust the composition of the spray liquid in the spraying process, and then spray again.

[0014] After the second component analysis verifies that it is qualified, it will be discharged. If it is not qualified, the composition of the spray liquid, the ratio of organic phase to aqueous phase will be adjusted according to the detection results of the online mass spectrometer.

[0015] Step 4: Extract the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards to obtain a first organic phase and a first aqueous phase. Evaporate the first organic phase under reduced pressure to obtain a second organic phase and a solid phase. Recover and discharge the second organic phase.

[0016] The first aqueous phase is subjected to heavy metal composition analysis. Based on the analysis results, the first aqueous phase is subjected to alkali treatment to obtain a second aqueous phase and a solid phase. The second aqueous phase is then recycled and discharged.

[0017] Step 5: Store and recover the solid phases obtained during the vacuum evaporation and alkali treatment processes.

[0018] Optionally, the pollutants include waste gas, waste liquid, and waste residue.

[0019] Optionally, spraying the non-compliant gases and solids in the pollutants may specifically include: spraying the non-compliant gases in the pollutants with a gas spray reaction system, and spraying the non-compliant solids in the pollutants with a dust spray reaction system.

[0020] Optionally, the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards are extracted, specifically including:

[0021] The liquid after spray treatment and the liquid in the pollutants that do not meet the emission standards are mixed and shaken, and then an extraction operation is performed after shaking is completed.

[0022] Optionally, emissions may be made if the emission standards are met, specifically including:

[0023] The solids after spray treatment that meet the emission standards are subjected to acid treatment to obtain acid-treated liquid phase and acid-treated solids. The acid-treated solids are discharged, and metals are recovered based on the acid-treated liquid phase.

[0024] Optionally, the second organic phase may be recycled and discharged, specifically including:

[0025] The second organic phase is recovered and discharged by recycling the solvent.

[0026] Optionally, the second aqueous phase is recycled and discharged, specifically including:

[0027] The pH of the second aqueous phase is adjusted, and then discharged after the adjustment is completed.

[0028] On the other hand, to achieve the above objectives, the present invention provides a real-time monitoring system for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization, comprising:

[0029] An online mass spectrometer, wherein the online mass spectrometer is connected to a first solenoid valve, a third solenoid valve, a fifth solenoid valve and an eighth solenoid valve via connecting pipelines;

[0030] The first solenoid valve is also connected to the gas storage tank and the liquid inlet of the first liquid spray reactor. The liquid outlet of the first liquid spray reactor is connected to the clarification tank through the ninth solenoid valve. The gas outlet of the first liquid spray reactor is connected to a gas flow meter. The gas flow meter is also connected to the reactor through the tenth solenoid valve. The reactor is connected to the third solenoid valve, which is connected to the clarification tank through the fourth solenoid valve. The fourth solenoid valve is also connected to a liquid storage tank, which is also connected to the online mass spectrometer. The clarification tank is also connected to a centrifuge and the second liquid spray reactor, and the centrifuge and the second liquid spray reactor are connected by a connecting pipeline.

[0031] Both the first liquid spraying reactor and the second liquid spraying reactor are connected to a spray liquid storage tank. A condenser, a distillation column, and a sixth solenoid valve are sequentially connected between the spray liquid storage tank and the fifth solenoid valve. The sixth solenoid valve is connected to the centrifuge.

[0032] The eighth solenoid valve is also connected to a neutralization tank and a liquid storage tank to be drained. The neutralization tank is connected to the second liquid spraying reactor, and the neutralization tank is connected to an acid storage tank and an alkali storage tank respectively through the seventh solenoid valve.

[0033] Optionally, the neutralization tank is also connected to a solid drying chamber.

[0034] Optionally, the first, second, third, fourth, fifth, sixth, seventh, and eighth solenoid valves are all three-way solenoid valves.

[0035] The technical effects of this invention are as follows:

[0036] The real-time monitoring method and system for the recycling of waste gas, wastewater, and solid waste provided by this invention, based on PID algorithm optimization, has high social and economic benefits and can bring considerable economic benefits to enterprises.

[0037] 1. Short detection time: The online mass spectrometer has a response time in the millisecond range, and the total detection time can be compressed to the second range. It has a fast detection speed and high detection accuracy, which can meet the needs of real-time monitoring.

[0038] 2. The online mass spectrometer uses an APCI ion source, which is compatible with gas, liquid, and solid sampling and detection. It can realize trace detection of pollutants, support custom databases, and combine rapid screening with accurate qualitative and quantitative analysis. It can also determine the type and amount of pollutants based on the concentration of pollutants and the principle of chemical reaction, and feed the data back to the PID controller to adjust the liquid volume and type of the spray liquid.

[0039] 3. Apart from moving the online mass spectrometer, no additional manual work is required throughout the entire process. The instrument can automatically sample, analyze, and upload data, reducing errors caused by human intervention. Furthermore, the online mass spectrometer can be placed in areas with high concentrations of toxic and harmful substances, improving employee safety, protecting employee health, and embodying a people-oriented development philosophy.

[0040] 4. High safety due to the absence of open flame.

[0041] 5. Low construction costs for enterprises. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0044] Figure 1 This is a flowchart from an embodiment of the present invention;

[0045] Figure 2 This is a flowchart illustrating the deviation calculation in an embodiment of the present invention;

[0046] Figure 3 This is a system structure diagram in an embodiment of the present invention;

[0047] Labeling Explanation: 1-Online mass spectrometer, 2-Gas storage tank, 3-Spray liquid storage tank, 4-First liquid spray reaction vessel, 5-Reaction vessel, 6-Clarification tank, 7-Centrifuge, 8-Distillation column, 9-Condenser, 10-Storage tank, 11-Second liquid spray reaction vessel, 12-Neutralization tank, 13-Solid drying oven, 14-Storage tank for liquid to be drained, 15-Acid storage tank, 16-Alkali storage tank, 17-Flow meter, 18-Gas flow meter, 19-First solenoid valve, 20-Second solenoid valve, 21-Third solenoid valve, 22-Fourth solenoid valve, 23-Fifth solenoid valve, 24-Sixth solenoid valve, 25-Seventh solenoid valve, 26-Eighth solenoid valve, 27-Ninth solenoid valve, 28-Tenth solenoid valve, 29-Eleventh solenoid valve. Detailed Implementation

[0048] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0049] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Every smaller range between any stated value or intermediate value within a stated range, and any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0050] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods have been described herein, any methods similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe the methods associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0051] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be obvious to those skilled in the art. This application specification and embodiments are merely exemplary.

[0052] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] Example 1

[0055] like Figures 1-2 As shown, this embodiment provides a real-time monitoring method for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization, including:

[0056] Step 1: Set pollutant emission standards and input pollutants into an online mass spectrometer for the first component analysis;

[0057] Step 2: Calculate the deviation between the pollutant emission standard and the first component analysis result. Based on the calculation result, determine whether the pollutant meets the emission standard. If the first component analysis result is less than the pollutant emission standard, the pollutant meets the emission standard and is discharged. If the first component analysis result is greater than the pollutant emission standard, the pollutant does not meet the emission standard, and proceed to Step 3.

[0058] Deviation Calculation: In this embodiment, the required pollution standard value is set via CAN communication. For example, if the benzene emission value is set to 10 and the pollution value fed back by the online mass spectrometer is 20, the spray volume is increased according to the deviation. By changing the spray volume of the spray system, high-precision range control of the system is achieved. Using this PID-controlled fully automatic waste pollution control system, the set spray chambers can be dynamically adjusted simultaneously with accurate feedback.

[0059] Step 3: Spray the gaseous and solid pollutants that do not meet the emission standards. After spraying, obtain the sprayed liquid, gas, and solid. Perform a second component analysis on the sprayed gas and the sprayed solid. Based on the results of the second component analysis, determine whether the sprayed gas and solid meet the emission standards. If they meet the emission standards, discharge them; if they do not meet the emission standards, adjust the composition of the spray liquid in the spraying process, and then spray again.

[0060] After the second component analysis verifies that it is qualified, it will be discharged. If it is not qualified, the composition of the spray liquid, the ratio of organic phase to aqueous phase will be adjusted according to the detection results of the online mass spectrometer.

[0061] Step 4: Extract the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards to obtain a first organic phase and a first aqueous phase. Evaporate the first organic phase under reduced pressure to obtain a second organic phase and a solid phase. Recover and discharge the second organic phase.

[0062] The first aqueous phase is subjected to heavy metal composition analysis. Based on the analysis results, the first aqueous phase is subjected to alkali treatment to obtain a second aqueous phase and a solid phase. The second aqueous phase is then recycled and discharged.

[0063] Step 5: Store and recover the solid phases obtained during the vacuum evaporation and alkali treatment processes.

[0064] It is feasible that the pollutants include waste gas, waste liquid and waste residue.

[0065] It is feasible to spray the gases and solids in the pollutants that do not meet the emission standards, specifically including: spraying the gases in the pollutants that do not meet the emission standards through a gas spray reaction system, and spraying the solids in the pollutants that do not meet the emission standards through a dust spray reaction system.

[0066] It is feasible to extract the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards, specifically including:

[0067] The liquid after spray treatment and the liquid in the pollutants that do not meet the emission standards are mixed and shaken, and then an extraction operation is performed after shaking is completed.

[0068] If feasible, emissions shall be made if the emission standards are met, specifically including:

[0069] The solids after spray treatment that meet the emission standards are subjected to acid treatment to obtain acid-treated liquid phase and acid-treated solids. The acid-treated solids are discharged, and metals are recovered based on the acid-treated liquid phase.

[0070] The implementation, and the recovery and discharge of the second organic phase, specifically includes:

[0071] The second organic phase is recovered and discharged by recycling the solvent.

[0072] It is feasible to recycle and discharge the second aqueous phase, specifically including:

[0073] The pH of the second aqueous phase is adjusted, and then discharged after the adjustment is completed.

[0074] like Figure 3 As shown, a real-time monitoring system for the recycling and treatment of waste gas, wastewater, and solid waste based on a PID algorithm optimization is described. The method for real-time monitoring and treatment of waste gas, wastewater, and solid waste based on a PID algorithm optimization is implemented based on this system, including...

[0075] Online mass spectrometer 1, wherein the online mass spectrometer 1 is connected to a first solenoid valve 19, a third solenoid valve 21, a fifth solenoid valve 23 and an eighth solenoid valve 26 via connecting pipelines;

[0076] The first solenoid valve 19 is also connected to the liquid inlet of the gas storage tank 2 and the first liquid spray reactor 4. The liquid outlet of the first liquid spray reactor 4 is connected to the clarification tank 6 through the ninth solenoid valve 27. The gas outlet of the first liquid spray reactor 4 is connected to the gas flow meter 18. The gas flow meter 18 is also connected to the reactor 5 through the tenth solenoid valve 28. The reactor 5 is connected to the third solenoid valve 21. The third solenoid valve 21 is connected to the clarification tank 6 through the fourth solenoid valve 22. The fourth solenoid valve 22 is also connected to the liquid storage tank 10. The liquid storage tank 10 is also connected to the online mass spectrometer 1. The clarification tank 6 is also connected to the centrifuge 7 and the second liquid spray reactor 20. The centrifuge 7 and the second liquid spray reactor 20 are connected by a connecting pipeline.

[0077] Both the first liquid spraying reactor 4 and the second liquid spraying reactor 20 are connected to the spraying liquid storage tank 3. A condenser 9, a distillation column 8, and a sixth solenoid valve 24 are connected in sequence between the spraying liquid storage tank 3 and the fifth solenoid valve 23. The sixth solenoid valve 24 is connected to the centrifuge 7.

[0078] The eighth solenoid valve 26 is also connected to a neutralization tank 12 and a liquid storage tank 14 to be drained. The neutralization tank 12 is connected to the second liquid spraying reactor 20, and the neutralization tank 12 is connected to the acid storage tank 15 and the alkali storage tank 16 respectively through the seventh solenoid valve 25.

[0079] Alternatively, the neutralization tank 12 may also be connected to a solid drying oven 13.

[0080] It is feasible that the first solenoid valve 19, the second solenoid valve 20, the third solenoid valve 21, the fourth solenoid valve 22, the fifth solenoid valve 23, the sixth solenoid valve 24, the seventh solenoid valve 25 and the eighth solenoid valve 26 are all three-way solenoid valves.

[0081] The specific processing steps of this system are as follows:

[0082] The key to this treatment system lies in the identification of the components of waste gas and solid waste. In this embodiment, an online mass spectrometer is used as a detector to obtain the specific composition of the three wastes (waste gas, wastewater, and solid waste). The obtained components are then compared with input thresholds to calculate the deviation. Qualified components are directly discharged, while unqualified components undergo spray treatment. Spraying the gas and solids enriches and collects readily soluble inorganic and organic pollutants. The treated gas and solids are then re-tested; those that pass are discharged. The enriched and collected liquid is mixed with the waste liquid generated during the production process, shaken, and then extracted to separate an organic phase and an aqueous phase. The organic phase is subjected to vacuum distillation to recover the organic phase, while the solid phase is collected and stored. Once a large amount has accumulated, solid-state treatment is performed. The aqueous phase is tested to determine its heavy metal content, and after alkali treatment, the solid and aqueous phases are treated separately before discharge. This system can recover and reuse solvents and heavy metal catalysts used in the reaction, thereby achieving the harmless treatment of waste.

[0083] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A real-time monitoring method for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization, characterized in that, include: Step 1: Set pollutant emission standards and input pollutants into an online mass spectrometer for the first component analysis; Step 2: Calculate the deviation between the pollutant emission standard and the first component analysis result. Based on the calculation result, determine whether the pollutant meets the emission standard. If the first component analysis result is less than the pollutant emission standard, then the pollutant meets the emission standard, and the pollutant is discharged. If the result of the first component analysis is greater than the pollutant emission standard, then the pollutant does not meet the emission standard, and step three is performed. Step 3: Spray the gaseous and solid pollutants that do not meet the emission standards. After spraying, obtain the sprayed liquid, gas, and solid. Perform a second component analysis on the sprayed gas and the sprayed solid. Based on the results of the second component analysis, determine whether the sprayed gas and solid meet the emission standards. If they meet the emission standards, discharge them; if they do not meet the emission standards, adjust the composition of the spray liquid in the spraying process, and then spray again. Step 4: Extract the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards to obtain a first organic phase and a first aqueous phase. Evaporate the first organic phase under reduced pressure to obtain a second organic phase and a solid phase. Recover and discharge the second organic phase. The first aqueous phase is subjected to heavy metal composition analysis. Based on the analysis results, the first aqueous phase is treated with alkali to obtain a second aqueous phase and a solid phase. The pH of the second aqueous phase is adjusted, and the mixture is discharged after adjustment. Step 5: Store and recover the solid phases obtained during the vacuum evaporation and alkali treatment processes.

2. The real-time monitoring method for waste recycling based on PID algorithm optimization according to claim 1, characterized in that, The pollutants include waste gas, waste liquid, and waste residue.

3. The real-time monitoring method for waste recycling based on PID algorithm optimization according to claim 1, characterized in that, Spraying the non-compliant gases and solids in the pollutants specifically includes: spraying the non-compliant gases in the pollutants with liquid through a gas spraying reaction system, and spraying the non-compliant solids in the pollutants with liquid through a dust spraying reaction system.

4. The real-time monitoring method for waste recycling based on PID algorithm optimization according to claim 1, characterized in that, Extraction is performed on the liquid after spray treatment and the liquid in the pollutants that does not meet the emission standards, specifically including: The liquid after spray treatment and the liquid in the pollutants that do not meet the emission standards are mixed and shaken, and then an extraction operation is performed after shaking is completed.

5. The real-time monitoring method for waste recycling based on PID algorithm optimization according to claim 1, characterized in that, If the emission standards are met, emissions will be made, specifically including: The solids after spray treatment that meet the emission standards are subjected to acid treatment to obtain acid-treated liquid phase and acid-treated solids. The acid-treated solids are discharged, and metals are recovered based on the acid-treated liquid phase.

6. The real-time monitoring method for waste recycling based on PID algorithm optimization according to claim 1, characterized in that, The second organic phase is then recycled and discharged, specifically including: The second organic phase is recovered and discharged by recycling the solvent.

7. A real-time monitoring system for the recycling and treatment of waste gas, wastewater, and solid waste based on a PID algorithm, wherein the system uses a real-time monitoring method for the recycling and treatment of waste gas, wastewater, and solid waste based on a PID algorithm as described in any one of claims 1-6, characterized in that... include: Online mass spectrometer (1), which is connected to a first solenoid valve (19), a third solenoid valve (21), a fifth solenoid valve (23) and an eighth solenoid valve (26) via connecting pipelines. The first solenoid valve (19) is also connected to the liquid inlet of the gas storage tank (2) and the first liquid spray reactor (4). The liquid outlet of the first liquid spray reactor (4) is connected to the clarification tank (6) through the ninth solenoid valve (27). The gas outlet of the first liquid spray reactor (4) is connected to the gas flow meter (18). The gas flow meter (18) is also connected to the reactor (5) through the tenth solenoid valve (28). The reactor (5) is connected to the third solenoid valve (21). The third solenoid valve (21) is connected to the clarification tank (6) through the fourth solenoid valve (22). The fourth solenoid valve (22) is also connected to the liquid storage tank (10). The liquid storage tank (10) is also connected to the online mass spectrometer (1). The clarification tank (6) is also connected to the centrifuge (7) and the second liquid spray reactor (11). The centrifuge (7) and the second liquid spray reactor (11) are connected by a connecting pipeline. Both the first liquid spray reactor (4) and the second liquid spray reactor (11) are connected to the spray liquid storage tank (3). A condenser (9), a distillation column (8) and a sixth solenoid valve (24) are connected in sequence from the spray liquid storage tank (3) to the fifth solenoid valve (23); and the sixth solenoid valve (24) is connected to the centrifuge (7). The eighth solenoid valve (26) is also connected to a neutralization tank (12) and a liquid storage tank (14) to be drained. The neutralization tank (12) is connected to the second liquid spraying reactor (11), and the neutralization tank (12) is connected to the acid storage tank (15) and the alkali storage tank (16) respectively through the seventh solenoid valve (25).

8. The real-time monitoring system for waste recycling based on PID algorithm optimization according to claim 7, characterized in that, The neutralization tank (12) is also connected to a solid drying oven (13).

9. A real-time monitoring system for the recycling of waste gas, wastewater, and solid waste based on PID algorithm optimization according to claim 7, characterized in that, The first solenoid valve (19), the second solenoid valve (20), the third solenoid valve (21), the fourth solenoid valve (22), the fifth solenoid valve (23), the sixth solenoid valve (24), the seventh solenoid valve (25), and the eighth solenoid valve (26) are all three-way solenoid valves.

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