Wastewater purifying and recycling system for thermosensitive coating production

Abstract

The invention relates to the technical field of wastewater purifying and recycling systems, in particular to a thermosensitive coating production wastewater purifying and recycling system which comprises a data acquisition module, a data processing module and a data processing module. A wastewater PH adjusting controller; generating a PH value adjusting coefficient based on a comparison result of the PH value of the heat-sensitive coating wastewater and a set target PH value; generating an alkaline solution adding instruction based on the PH value adjusting coefficient; the liquid alkalinity adjusting device is in communication connection with the wastewater PH adjusting controller and is used for receiving an alkaline solution adding instruction; adding an alkaline solution into the blending pool; receiving the PH value and temperature of the blended liquid sent by the data acquisition module; generating a PH value adjusting coefficient based on a comparison result of the PH value of the blended liquid and a set target PH value; based on the PH value adjusting coefficient, a liquid temperature adjusting instruction is generated; and the blending liquid PH adjusting mechanism is in communication connection with the blending liquid PH adjusting controller and is used for adjusting the temperature of the blended liquid in the blending pool.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater purification and reuse systems, and more specifically to a wastewater purification and reuse system for heat-sensitive coating production. Background Art

[0002] In recent years, with the improvement of environmental awareness and increasingly stringent regulatory requirements, the thermal coating production industry is facing severe challenges in wastewater treatment. Traditional wastewater treatment methods usually adopt batch processing mode, which has problems such as low efficiency and unstable treatment. Although some companies have tried to introduce automated equipment, they still face many technical bottlenecks.

[0003] At present, the more advanced wastewater treatment systems in the industry usually use PLC controllers in conjunction with multiple independent sensors and actuators for wastewater treatment. Although this method has improved the level of automation to a certain extent, it still has many shortcomings. First, each processing unit often operates independently and lacks an effective coordination mechanism, resulting in low overall treatment efficiency. Secondly, due to the complex composition and large fluctuations of thermal coating wastewater, a single control strategy is difficult to cope with various complex situations, and often results in unstable treatment and unsatisfactory results.

[0004] In addition, the existing systems also have obvious shortcomings in data collection and analysis. Most systems can only perform simple data recording, lack in-depth analysis and prediction functions, and cannot provide valuable decision support for production management. At the same time, the system's scalability and adaptability are poor, making it difficult to meet the needs of different production scales and different types of thermal coating production lines.

[0005] Most importantly, the existing system has obvious deficiencies in the coordinated regulation of pH and temperature. Most systems either focus only on pH regulation or temperature control alone, ignoring the mutual influence between the two, resulting in low regulation accuracy, affecting the effect of wastewater treatment and the quality of recycled water. Summary of the invention

[0006] In view of the above problems, the present invention proposes a new type of wastewater purification and reuse system for thermal-sensitive coating production. The system aims to achieve efficient automation and precise control of the wastewater treatment process through advanced sensing technology, intelligent control algorithms and modular design, thereby significantly improving wastewater treatment efficiency and recycled water quality.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A system for purifying and reusing wastewater used in the production of thermal-sensitive coatings, comprising:

[0009] Data acquisition module for:

[0010] Collect the pH value and temperature of the heat-sensitive coating wastewater flowing into the mixing tank;

[0011] Collect the pH value and temperature of the prepared liquid in the preparation pool;

[0012] The wastewater pH adjustment controller is connected to the data acquisition module for:

[0013] Receiving the pH value of the heat-sensitive coating wastewater sent by the data acquisition module;

[0014] Based on the comparison result of the pH value of the heat-sensitive coating wastewater and the set target pH value, a pH value adjustment coefficient is generated;

[0015] Based on the pH value adjustment coefficient, generating an alkaline solution addition instruction;

[0016] The liquid alkaline regulating device is communicatively connected with the wastewater pH regulating controller and is used for:

[0017] receiving the alkaline solution adding instruction;

[0018] adding alkaline solution into the preparation tank;

[0019] The pH adjustment controller of the prepared liquid is connected to the data acquisition module for:

[0020] Receiving the pH value and temperature of the prepared liquid sent by the data acquisition module;

[0021] Based on the comparison result of the pH value of the prepared liquid and the set target pH value, a pH value adjustment coefficient is generated;

[0022] generating a liquid temperature adjustment instruction based on the pH value adjustment coefficient;

[0023] The pH adjustment mechanism of the prepared liquid is connected to the pH adjustment controller of the prepared liquid and is used for:

[0024] receiving the liquid temperature adjustment instruction;

[0025] The liquid temperature of the prepared liquid in the preparation tank is adjusted.

[0026] Preferably, the liquid alkalinity regulating device comprises:

[0027] An alkaline adjustment storage bin, used for storing alkaline solution;

[0028] The alkaline regulating bin controller is connected to the wastewater pH regulating controller and the alkaline regulating storage bin for:

[0029] receiving the alkaline solution adding instruction;

[0030] Controlling the alkaline adjustment storage bin to input the alkaline solution into the mixing tank;

[0031] The first valve is arranged on the connecting pipe between the alkaline adjustment storage bin and the blending tank, and is connected to the alkaline adjustment bin controller for:

[0032] The opening and closing operations are realized in response to the control instructions of the alkaline regulating chamber controller.

[0033] Preferably, the data acquisition module comprises:

[0034] A pH sensor is disposed in the mixing tank and is used to detect the pH value of the liquid in the mixing tank;

[0035] The temperature sensor is arranged in the mixing tank and is used to detect the temperature of the liquid in the mixing tank.

[0036] Preferably, the pH sensor and the temperature sensor are both water-resistant sensors capable of detecting pH value and liquid temperature.

[0037] Preferably, the mixing liquid pH adjustment mechanism comprises:

[0038] The pH adjustment controller of the prepared liquid is connected to the data acquisition module for:

[0039] Receiving the liquid temperature sent by the data acquisition module;

[0040] generating a liquid temperature adjustment coefficient based on the liquid temperature;

[0041] generating a temperature adjustment instruction based on the liquid temperature adjustment coefficient;

[0042] The liquid temperature regulating device is in communication with the prepared liquid pH regulating controller and is used for:

[0043] receiving the temperature adjustment instruction;

[0044] The liquid temperature of the prepared liquid in the preparation tank is adjusted.

[0045] Preferably, the liquid temperature regulating device comprises:

[0046] A thermal temperature regulation storage bin for storing thermal temperature regulation substances;

[0047] A thermal temperature regulating bin controller is connected in communication with the preparation liquid pH regulating controller and the thermal temperature regulating storage bin, and is used to:

[0048] receiving the temperature adjustment instruction;

[0049] Controlling the thermal temperature regulating storage bin to input the thermal temperature regulating substance into the blending tank;

[0050] The second valve is arranged on the connecting pipe between the heat temperature regulating storage bin and the mixing tank, and is connected to the heat temperature regulating bin controller for:

[0051] The opening and closing operations are realized in response to the control instructions of the thermal temperature regulating chamber controller.

[0052] As a preference, it also includes:

[0053] The display module is respectively connected to the wastewater pH regulating controller and the preparation liquid pH regulating controller for:

[0054] Display the numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller;

[0055] The storage module is respectively connected to the wastewater pH adjustment controller and the preparation liquid pH adjustment controller for:

[0056] Store the numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller.

[0057] As a preference, it also includes:

[0058] The information transmission module is respectively connected to the wastewater pH adjustment controller, the preparation liquid pH adjustment controller and the user intelligent terminal for communication, and is used for:

[0059] The numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller are transmitted to the user intelligent terminal.

[0060] As a preference, it also includes:

[0061] The management module is respectively connected to the wastewater pH adjustment controller and the preparation liquid pH adjustment controller for:

[0062] Data processing is performed on the wastewater pH adjustment controller and the preparation liquid pH adjustment controller.

[0063] Preferably, the thermal temperature regulating chamber controller comprises:

[0064] A liquid temperature adjustment coefficient receiving unit, which is in communication with the mixing liquid PH adjustment controller and is used to receive the liquid temperature adjustment coefficient;

[0065] The liquid temperature adjustment value calculation unit is communicatively connected with the liquid temperature adjustment coefficient receiving unit and is used for:

[0066] Based on the liquid temperature adjustment coefficient, determining the target liquid temperature of the prepared liquid;

[0067] Generate a liquid temperature adjustment value;

[0068] The thermal temperature regulating substance determination unit is communicatively connected with the liquid temperature regulating value calculation unit and is used for:

[0069] determining the solubility and temperature of a thermal temperature regulating substance based on the liquid temperature regulating value;

[0070] The liquid level information comparison unit is in communication with the thermal temperature regulating substance determination unit and the thermal temperature regulating storage bin, and is used to:

[0071] receiving liquid level information of the thermal temperature regulating substance in the thermal temperature regulating storage bin;

[0072] generating a liquid level comparison result based on the solubility, temperature and liquid level information of the thermal temperature regulating substance;

[0073] The valve control unit is in communication with the liquid level information comparison unit and is used for:

[0074] Based on the liquid level comparison result, the opening and closing of the second valve are controlled.

[0075] The system of the present invention has the following significant technical effects:

[0076] From a macro perspective, the system of the present invention realizes intelligent control of the entire process of wastewater treatment through the innovative design of the overall architecture. An organic synergy mechanism is formed between the various modules of the system, and a closed-loop intelligent control system is constructed from data collection, parameter analysis to control execution. This holistic design not only greatly improves the operating efficiency of the system, but also significantly enhances its adaptability and reliability.

[0077] In terms of module collaboration, the system of the present invention cleverly solves the contradiction between pH value and temperature control. The pH value and temperature of the wastewater are monitored in real time through the data acquisition module, and the wastewater pH adjustment controller and the preparation liquid pH adjustment controller can respond to changes in these parameters in a timely manner. This collaborative control strategy not only improves the accuracy of pH value regulation, but also ensures that temperature changes will not have an adverse effect on the pH value, thereby achieving a more stable and efficient wastewater treatment process.

[0078] At the microscopic level, the present invention has achieved technical breakthroughs in many key links. For example, in the sensor design, special materials with strong water resistance are used, which greatly prolongs the service life of the sensor and reduces maintenance costs. In terms of control algorithm, advanced fuzzy PID control is introduced, which can adaptively adjust control parameters according to real-time changes in wastewater characteristics, significantly improving the control accuracy and response speed of the system.

[0079] In addition, the system of the present invention also has significant effect superposition and complementary characteristics. For example, accurate pH value control not only directly improves the wastewater treatment effect, but also creates favorable conditions for subsequent biological treatment, further improving the overall treatment efficiency. At the same time, real-time data monitoring and analysis functions not only support the current treatment process, but also provide valuable data support for long-term process optimization.

[0080] In general, the wastewater purification and reuse system for thermal-sensitive coating production of the present invention has achieved a comprehensive improvement in wastewater treatment efficiency, treatment quality and system reliability through innovative overall design and breakthroughs in key technologies. It not only solves the wastewater treatment problem currently faced by the thermal-sensitive coating industry, but also provides a new technical path for the green development of the entire coating industry, with important economic value and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is the overall flow chart of the system of the present invention.

[0082] Figure 2 It is a flow chart of the data acquisition module of the present invention.

[0083] Figure 3 The figure is a flow chart of the liquid alkaline regulating device of the present invention.

[0084] Figure 4 It is a flow chart of the pH adjustment mechanism of the prepared liquid of the present invention.

[0085] Figure 5 It is a flow chart of the thermal temperature regulating chamber controller of the present invention. DETAILED DESCRIPTION

[0086] like Figure 1-5 As shown, the present invention provides a system for purifying and reusing wastewater used in the production of heat-sensitive coatings. The present invention relates to a system for purifying and reusing wastewater used in the production of heat-sensitive coatings, specifically a system capable of realizing automatic treatment and reuse of wastewater. The present invention is further described in detail below in conjunction with specific embodiments.

[0087] Preferably, the wastewater purification and reuse system for the production of thermal-sensitive coatings of the present invention comprises a data acquisition module 1, a wastewater pH adjustment controller 2, a liquid alkaline adjustment device 3, a preparation liquid pH adjustment controller 4 and a preparation liquid pH adjustment mechanism 5.

[0088] Specifically, the data acquisition module 1 is used to collect the pH value and temperature of the heat-sensitive coating wastewater flowing into the mixing tank, as well as the pH value and temperature of the mixed liquid in the mixing tank. In one embodiment of the present invention, the data acquisition module 1 can use corrosion-resistant pH sensors and temperature sensors to ensure that stable performance can be maintained in the case of long-term contact with wastewater. For example, a glass electrode pH sensor can be used, with a measurement range of 0-14PH and an accuracy of ±0.01PH; a PT100 platinum resistor can be used as the temperature sensor, with a measurement range of -50℃ to 150℃ and an accuracy of ±0.1℃.

[0089] The wastewater pH adjustment controller 2 is connected to the data acquisition module 1 in communication, and is used to receive the pH value of the heat-sensitive coating wastewater sent by the data acquisition module 1. Based on the comparison between the received pH value and the preset target pH value, the wastewater pH adjustment controller 2 generates a pH adjustment coefficient. Here, the target pH value is usually set between 6.5-8.5, because this range is suitable for the growth of most microorganisms and is conducive to the subsequent biological treatment process. The calculation of the pH adjustment coefficient can adopt the proportional integral differential (PID) algorithm to achieve precise control.

[0090] Furthermore, the wastewater pH adjustment controller 2 generates an alkaline solution addition instruction based on the generated pH adjustment coefficient. The instruction contains information such as the type and amount of alkaline solution to be added. For example, when the pH value of the wastewater is lower than 6.5, the system may instruct the addition of sodium hydroxide solution; when the pH value is close to the target value, sodium carbonate solution may be added to achieve a more gentle adjustment.

[0091] The liquid alkaline regulating device 3 is connected to the wastewater pH regulating controller 2 for receiving instructions for adding alkaline solution and adding an appropriate amount of alkaline solution to the blending tank accordingly. In a preferred embodiment of the present invention, the liquid alkaline regulating device 3 uses a precision metering pump, the flow rate of which can be adjusted within the range of 0.1-100L / h to ensure the accuracy of addition.

[0092] The preparation liquid pH adjustment controller 4 is connected to the data acquisition module 1 for receiving the pH value and temperature of the preparation liquid sent by the data acquisition module 1. Similar to the wastewater pH adjustment controller 2, the preparation liquid pH adjustment controller 4 generates a new pH adjustment coefficient based on the comparison result between the received pH value and the set target pH value. At this stage, the target pH value may be more precise, for example, set to 7.0±0.2 to meet specific reuse requirements.

[0093] Finally, the pH adjustment controller 4 of the prepared liquid generates a liquid temperature adjustment instruction based on the generated pH adjustment coefficient. This is because temperature affects the measurement and adjustment effect of the pH value, so the temperature factor needs to be considered at the same time. For example, when the temperature rises, the ionization degree of water increases, and the pH value will decrease slightly under the same conditions. Therefore, the liquid temperature adjustment instruction will take this effect into account to achieve more accurate pH control.

[0094] The preparation liquid pH adjustment mechanism 5 is connected to the preparation liquid pH adjustment controller 4 for receiving the liquid temperature adjustment instruction and adjusting the liquid temperature of the prepared liquid in the preparation tank. In practical applications, the preparation liquid pH adjustment mechanism 5 may include a heater and a cooler, which can accurately adjust the liquid temperature within the range of 15-40°C, with an accuracy of ±0.5°C.

[0095] Next, the present invention further refines the structure of the liquid alkaline regulating device 3. The liquid alkaline regulating device 3 includes an alkaline regulating storage bin 31, an alkaline regulating bin controller 32 and a first valve 33.

[0096] The alkaline adjustment storage bin 31 is used to store alkaline solutions. In practical applications, multiple storage bins can be provided to store alkaline solutions of different types and concentrations, such as 10% sodium hydroxide solution, 5% sodium carbonate solution, etc., to meet different pH adjustment requirements.

[0097] The alkaline regulating bin controller 32 is connected to the wastewater pH regulating controller 2 and the alkaline regulating storage bin 31. Its main function is to receive the alkaline solution addition instruction and control the alkaline regulating storage bin 31 to input an appropriate amount of alkaline solution into the blending tank. In a preferred embodiment of the present invention, the alkaline regulating bin controller 32 adopts a programmable logic controller (PLC), which can achieve precise flow control, and its control accuracy can reach ±0.1%.

[0098] The first valve 33 is arranged on the connecting pipe between the alkaline regulating storage bin 31 and the blending tank, and is in communication connection with the alkaline regulating bin controller 32. It responds to the control instruction of the alkaline regulating bin controller 32 to realize the opening and closing operation. In the present invention, the first valve 33 is preferably a solenoid valve, and its reaction time can reach 20ms, so as to ensure fast response and precise control.

[0099] The data acquisition module 1 includes a pH sensor 11 and a temperature sensor 12, both of which are arranged in the mixing tank.

[0100] The pH sensor 11 is used to detect the pH value of the liquid in the mixing tank. In a preferred embodiment of the present invention, the pH sensor 11 uses a composite electrode, including a measuring electrode and a reference electrode, which can accurately measure in the range of 0-14 pH, with a response time of less than 15 seconds and a measurement accuracy of up to ±0.01 pH.

[0101] The temperature sensor 12 is used to detect the temperature of the liquid in the mixing tank. Preferably, the temperature sensor 12 uses a PT100 platinum resistance temperature sensor with a measurement range of -50°C to 150°C and an accuracy of ±0.1°C. Accurate temperature measurement is crucial for the calibration and adjustment of the pH value, because the pH value will change with temperature.

[0102] The wastewater purification and reuse system for the production of thermal-sensitive coatings of the present invention realizes precise control of the pH value and temperature of the wastewater through the coordinated work of the above-mentioned modules. This precise control brings about many beneficial effects: first, it ensures that the treated wastewater can meet the reuse standards, reduces the use of fresh water, and reduces production costs; second, precise pH control is conducive to the subsequent biological treatment process and improves the overall treatment efficiency; third, the automated control system reduces manual operations and improves the consistency and reliability of the treatment; finally, the real-time monitoring and adjustment functions enable the system to quickly respond to changes in the properties of the wastewater and enhance the stability and adaptability of the treatment process. Continuing to explain other embodiments of the present invention, as described in claim 4, the pH sensor 11 and the temperature sensor 12 are both water-resistant sensors that can detect pH values ​​and liquid temperatures. The design of this feature takes into account the particularity of wastewater produced by thermal-sensitive coatings, such as the possibility of containing various chemicals and suspended particles.

[0103] In a preferred embodiment of the present invention, the pH sensor 11 uses a composite electrode protected by a Teflon membrane. The Teflon membrane has excellent chemical corrosion resistance and antifouling properties, and can maintain stable measurement performance when immersed in wastewater for a long time. In addition, the sensor adopts a planar membrane structure design, which is not easily blocked by suspended matter in the wastewater, thereby ensuring the accuracy of the measurement and the service life of the sensor.

[0104] The temperature sensor 12 preferably adopts a thermal resistor with a titanium alloy shell. Titanium alloy has excellent corrosion resistance and can resist the erosion of most chemical substances. At the same time, the sensor adopts a fast response design, and its response time can reach within 1 second, which can timely reflect the change of wastewater temperature and provide an important reference for the accurate measurement and adjustment of pH value.

[0105] This water-resistant design not only improves the stability and reliability of the system, but also greatly reduces maintenance costs. In actual applications, these sensors can work continuously for 3-6 months without replacement or special maintenance, significantly improving the operating efficiency of the system.

[0106] Furthermore, the preparation liquid PH adjustment mechanism 5 includes a preparation liquid PH adjustment controller 51 and a liquid temperature adjustment device 52. The preparation liquid PH adjustment controller 51 is in communication connection with the data acquisition module 1, and is used to receive the liquid temperature sent by the data acquisition module 1, generate a liquid temperature adjustment coefficient based on the liquid temperature, and further generate a temperature adjustment instruction based on the liquid temperature adjustment coefficient.

[0107] In one embodiment of the present invention, the mixing liquid pH adjustment controller 51 adopts a fuzzy PID control algorithm. The algorithm can dynamically adjust the PID parameters according to the deviation between the current liquid temperature and the target temperature and the rate of change thereof, thereby achieving more accurate and faster temperature control. For example, when the temperature deviation is large, the controller will use a larger proportional coefficient to quickly approach the target temperature; when approaching the target temperature, the proportional coefficient will be reduced to avoid overshoot, and the integral action will be increased to eliminate static errors.

[0108] The liquid temperature regulating device 52 is in communication with the mixing liquid pH regulating controller 51, and is used to receive temperature regulating instructions and regulate the liquid temperature of the mixed liquid in the mixing tank. In practical applications, the liquid temperature regulating device 52 may include a heater and a cooler.

[0109] The heater part can use electric heating tubes, whose power range can be adjusted between 5-50kW, which can quickly increase the temperature of a large amount of wastewater. The cooler part can use plate heat exchangers, whose heat exchange area can be selected between 10-100㎡, which can effectively reduce the temperature of wastewater. This two-way adjustment design enables the system to accurately control the wastewater temperature within the target range under various environmental conditions.

[0110] The liquid temperature regulating device 52 further includes a thermal temperature regulating storage bin 521 , a thermal temperature regulating bin controller 522 and a second valve 523 .

[0111] The heat temperature regulating storage bin 521 is used to store heat temperature regulating substances. In a preferred embodiment of the present invention, the storage bin adopts a double-layer insulation design, with an inner layer made of stainless steel and an outer layer made of polyurethane foam, which can effectively maintain the temperature of the regulating substance and reduce heat loss. According to actual needs, hot water or cold water can be selected as the regulating substance.

[0112] The hot temperature regulating bin controller 522 is in communication with the preparation liquid pH regulating controller 51 and the hot temperature regulating storage bin 521. Its main function is to receive temperature regulating instructions and control the hot temperature regulating storage bin 521 to input an appropriate amount of regulating substances into the preparation pool. In the present invention, the hot temperature regulating bin controller 522 uses an industrial-grade embedded computer with high reliability and rich interface resources, and can achieve precise flow and temperature control.

[0113] The second valve 523 is arranged on the connecting pipe between the heat temperature regulating storage bin 521 and the mixing tank, and is in communication connection with the heat temperature regulating bin controller 522. It responds to the control instruction of the heat temperature regulating bin controller 522 to realize the opening and closing operation. In the present invention, the second valve 523 preferably adopts a proportional regulating valve, whose opening can be continuously adjusted within the range of 0-100%, so as to realize more precise flow control.

[0114] Finally, the system of the present invention further comprises a display module 6 and a storage module 7. These two modules are respectively connected to the wastewater pH adjustment controller 2 and the preparation liquid pH adjustment controller 4 for displaying and storing the numerical values ​​and information collection and recording information output by these controllers.

[0115] The display module 6 preferably adopts an industrial-grade touch screen, which has the characteristics of high brightness, wide viewing angle, dustproof and waterproof, and is suitable for long-term use in industrial environments. It can not only display various parameters in real time, but also display data trends in the form of charts, so that operators can intuitively understand the system operation status.

[0116] Storage module 7 uses an industrial-grade solid-state hard drive with high-speed read and write and anti-vibration characteristics. It can store a large amount of historical data reliably for a long time, providing an important basis for system optimization and fault diagnosis. In addition, storage module 7 also supports data encryption to ensure the security of sensitive information.

[0117] Through the collaborative work of these functional modules, the wastewater purification and reuse system for the production of thermal-sensitive coatings of the present invention can not only realize the efficient treatment and reuse of wastewater, but also provide rich data support for production management, further improving the intelligence level of the entire production process. Continuing to elaborate on other embodiments of the present invention, as described in claim 8, the system also includes an information transmission module 8. The module is respectively connected to the wastewater PH adjustment controller 2, the preparation liquid PH adjustment controller 4 and the user intelligent terminal, and is used to transmit the numerical values ​​and information collection and recording information output by these controllers to the user intelligent terminal.

[0118] In a preferred embodiment of the present invention, the information transmission module 8 adopts an industrial-grade 4G / 5G wireless communication module, supports multiple communication protocols such as MQTT, HTTP, etc., to ensure the stability and security of data transmission. The module can push system operation data to the user's smart terminal in real time, so that managers can monitor the system operation status anytime and anywhere.

[0119] For example, when the pH value or temperature of the wastewater exceeds the preset range, the information transmission module 8 will immediately send an alarm message to the user's smart terminal. This real-time monitoring mechanism greatly improves the reliability and safety of the system, allowing managers to discover and deal with potential problems in a timely manner and avoid possible production accidents.

[0120] In addition, the information transmission module 8 also supports remote control. Authorized users can remotely adjust system parameters, such as target pH value, temperature threshold, etc., through the intelligent terminal, so as to achieve more flexible system management. This function is particularly important in emergencies, and can help managers quickly respond to changes in production needs.

[0121] The system of the present invention further comprises a management module 9. The module is respectively connected to the wastewater pH adjustment controller 2 and the preparation liquid pH adjustment controller 4 for communication and is used for performing data processing on these controllers.

[0122] In practical applications, the management module 9 can be regarded as the central processing unit of the system, which is responsible for coordinating the work of various modules. It uses a high-performance industrial computer equipped with a multi-core processor and a large-capacity memory, and can process data streams from multiple controllers at the same time.

[0123] The core functions of the management module 9 include data analysis and decision support. For example, it can predict the trend of wastewater pH and temperature by analyzing historical data, so as to adjust the treatment parameters in advance and implement a more proactive control strategy. In addition, the management module 9 also has a self-learning function, which can optimize the control algorithm based on long-term operation data and continuously improve the system's processing efficiency.

[0124] In terms of abnormal situation handling, the management module 9 plays a key role. When abnormal data is detected, it will immediately start the preset emergency plan, such as automatically switching to backup equipment, adjusting the processing flow, etc., to minimize the impact of abnormal situations on production.

[0125] Finally, the thermal temperature regulating chamber controller 522 includes a liquid temperature regulating coefficient receiving unit 5221, a liquid temperature regulating value calculating unit 5222, a thermal temperature regulating substance determining unit 5223, a liquid level information comparing unit 5224 and a valve controlling unit 5225. The coordinated work of these units realizes accurate temperature regulating control.

[0126] The liquid temperature adjustment coefficient receiving unit 5221 is connected to the mixing liquid pH adjustment controller 51 for receiving the liquid temperature adjustment coefficient. In the present invention, the unit adopts a high-speed data acquisition card with a sampling rate of up to 1MHz to ensure that the rapidly changing temperature signal can be captured.

[0127] The liquid temperature adjustment value calculation unit 5222 is in communication with the liquid temperature adjustment coefficient receiving unit 5221. It determines the target liquid temperature of the prepared liquid based on the received liquid temperature adjustment coefficient and generates a liquid temperature adjustment value. In practical applications, the unit adopts an optimized PID algorithm, which can quickly calculate the optimal adjustment value according to the deviation between the current temperature and the target temperature.

[0128] The thermal temperature regulating substance determination unit 5223 is in communication with the liquid temperature regulating value calculation unit 5222, and is used to determine the solubility and temperature of the thermal temperature regulating substance based on the liquid temperature regulating value. The unit has a built-in database of physical properties of various commonly used regulating substances, and can select the most suitable regulating substance according to current needs.

[0129] The liquid level information comparison unit 5224 is in communication with the thermal temperature regulating substance determination unit 5223 and the thermal temperature regulating storage bin 521. It receives the liquid level information of the thermal temperature regulating substance in the thermal temperature regulating storage bin 521, and generates a liquid level comparison result based on the solubility, temperature and liquid level information of the regulating substance. This function ensures that the system can accurately determine whether there is enough regulating substance available.

[0130] Finally, the valve control unit 5225 is connected to the liquid level information comparison unit 5224 for communication, and controls the opening and closing of the second valve 523 based on the liquid level comparison result. The unit adopts high-precision PWM control technology, which can achieve precise adjustment of the valve opening, thereby precisely controlling the amount of the regulating substance added.

[0131] Through the coordinated work of these precise control units, the system of the present invention can achieve accurate regulation of wastewater temperature, thereby creating favorable conditions for accurate control of pH value. This multi-parameter coordinated control strategy greatly improves the efficiency and quality of wastewater treatment and provides strong technical support for wastewater reuse in the production process of thermal sensitive coatings.

[0132] The above description is only a preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto; any person familiar with the art who, within the scope disclosed by the present invention, makes equivalent replacements or changes based on the scheme and improved concepts of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A system for purifying and reusing wastewater from the production of thermal-sensitive coatings, characterized in that: include: Data acquisition module for: Collect the pH value and temperature of the heat-sensitive coating wastewater flowing into the mixing tank; Collect the pH value and temperature of the prepared liquid in the preparation pool; The wastewater pH adjustment controller is connected to the data acquisition module for: Receiving the pH value of the heat-sensitive coating wastewater sent by the data acquisition module; Based on the comparison result of the pH value of the heat-sensitive coating wastewater and the set target pH value, a pH value adjustment coefficient is generated; Based on the pH value adjustment coefficient, generating an alkaline solution addition instruction; The liquid alkaline regulating device is communicatively connected with the wastewater pH regulating controller and is used for: receiving the alkaline solution adding instruction; adding alkaline solution into the preparation tank; The pH adjustment controller of the prepared liquid is connected to the data acquisition module for: Receiving the pH value and temperature of the prepared liquid sent by the data acquisition module; Based on the comparison result of the pH value of the prepared liquid and the set target pH value, a pH value adjustment coefficient is generated; generating a liquid temperature adjustment instruction based on the pH value adjustment coefficient; The pH adjustment mechanism of the prepared liquid is connected to the pH adjustment controller of the prepared liquid and is used for: receiving the liquid temperature adjustment instruction; The liquid temperature of the prepared liquid in the preparation tank is adjusted.

2. The wastewater purification and reuse system for heat-sensitive coating production according to claim 1 is characterized in that: The liquid alkalinity regulating device comprises: An alkaline adjustment storage bin, used for storing alkaline solution; The alkaline regulating bin controller is connected to the wastewater pH regulating controller and the alkaline regulating storage bin for: receiving the alkaline solution adding instruction; Controlling the alkaline adjustment storage bin to input the alkaline solution into the mixing tank; The first valve is arranged on the connecting pipe between the alkaline adjustment storage bin and the blending tank, and is connected to the alkaline adjustment bin controller for: The opening and closing operations are realized in response to the control instructions of the alkaline regulating chamber controller.

3. The wastewater purification and reuse system for heat-sensitive coating production according to claim 1 is characterized in that: The data acquisition module comprises: A pH sensor is disposed in the mixing tank and is used to detect the pH value of the liquid in the mixing tank; The temperature sensor is arranged in the mixing tank and is used to detect the temperature of the liquid in the mixing tank.

4. The wastewater purification and reuse system for heat-sensitive coating production according to claim 3 is characterized in that: The pH sensor and the temperature sensor are both water-resistant sensors capable of detecting pH value and liquid temperature.

5. The wastewater purification and reuse system for heat-sensitive coating production according to claim 1 is characterized in that: The prepared liquid pH adjustment mechanism comprises: The pH adjustment controller of the prepared liquid is connected to the data acquisition module for: Receiving the liquid temperature sent by the data acquisition module; generating a liquid temperature adjustment coefficient based on the liquid temperature; generating a temperature adjustment instruction based on the liquid temperature adjustment coefficient; The liquid temperature regulating device is in communication with the prepared liquid pH regulating controller and is used for: receiving the temperature adjustment instruction; The liquid temperature of the prepared liquid in the preparation tank is adjusted.

6. The wastewater purification and reuse system for heat-sensitive coating production according to claim 5 is characterized in that: The liquid temperature regulating device comprises: A thermal temperature regulation storage bin for storing thermal temperature regulation substances; A thermal temperature regulating bin controller is connected in communication with the preparation liquid pH regulating controller and the thermal temperature regulating storage bin, and is used to: receiving the temperature adjustment instruction; Controlling the thermal temperature regulating storage bin to input the thermal temperature regulating substance into the blending tank; The second valve is arranged on the connecting pipe between the heat temperature regulating storage bin and the mixing tank, and is connected to the heat temperature regulating bin controller for: The opening and closing operations are realized in response to the control instructions of the thermal temperature regulating chamber controller.

7. The wastewater purification and reuse system for heat-sensitive coating production according to claim 1 is characterized in that: Also includes: The display module is respectively connected to the wastewater pH regulating controller and the preparation liquid pH regulating controller for: Display the numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller; The storage module is respectively connected to the wastewater pH adjustment controller and the preparation liquid pH adjustment controller for: Store the numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller.

8. The wastewater purification and reuse system for heat-sensitive coating production according to claim 7 is characterized in that: Also includes: The information transmission module is respectively connected to the wastewater pH adjustment controller, the preparation liquid pH adjustment controller and the user intelligent terminal for communication, and is used for: The numerical values ​​and information collection and recording information output by the wastewater pH adjustment controller and the preparation liquid pH adjustment controller are transmitted to the user intelligent terminal.

9. The wastewater purification and reuse system for heat-sensitive coating production according to claim 1 is characterized in that: Also includes: The management module is respectively connected to the wastewater pH adjustment controller and the preparation liquid pH adjustment controller for: Data processing is performed on the wastewater pH adjustment controller and the preparation liquid pH adjustment controller.

10. The wastewater purification and reuse system for heat-sensitive coating production according to claim 6, characterized in that: The thermal temperature regulating chamber controller comprises: A liquid temperature adjustment coefficient receiving unit, which is in communication with the mixing liquid PH adjustment controller and is used to receive the liquid temperature adjustment coefficient; The liquid temperature adjustment value calculation unit is communicatively connected with the liquid temperature adjustment coefficient receiving unit and is used for: Based on the liquid temperature adjustment coefficient, determining the target liquid temperature of the prepared liquid; Generate a liquid temperature adjustment value; The thermal temperature regulating substance determination unit is communicatively connected with the liquid temperature regulating value calculation unit and is used for: determining the solubility and temperature of a thermal temperature regulating substance based on the liquid temperature regulating value; The liquid level information comparison unit is in communication with the thermal temperature regulating substance determination unit and the thermal temperature regulating storage bin, and is used to: receiving liquid level information of the thermal temperature regulating substance in the thermal temperature regulating storage bin; generating a liquid level comparison result based on the solubility, temperature and liquid level information of the thermal temperature regulating substance; The valve control unit is in communication with the liquid level information comparison unit and is used for: Based on the liquid level comparison result, the opening and closing of the second valve are controlled.

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