A wastewater purification and reuse system for heat-sensitive paint production

Abstract

The present application relates to wastewater purification reuse system technical field, more specifically, it relates to a kind of wastewater purification reuse system for heat-sensitive paint production, comprising: data acquisition module;Wastewater pH adjustment controller;Based on the comparison result of the pH value of heat-sensitive paint wastewater and set target pH value, generate pH value adjustment coefficient;Based on pH value adjustment coefficient, generate alkaline solution adding instruction;Liquid alkaline adjusting device, with wastewater pH adjustment controller communication connection, receive alkaline solution adding instruction;Add alkaline solution to the blending pool;Receive the pH value and temperature of the liquid of blending completion sent by data acquisition module;Based on the comparison result of the pH value of blending completion liquid and set target pH value, generate pH value adjustment coefficient;Based on pH value adjustment coefficient, generate liquid temperature regulation instruction;Blending liquid pH adjustment mechanism, with blending liquid pH adjustment controller communication connection, for the liquid temperature regulation of blending completion liquid in blending pool.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification and reuse systems, and more specifically, to a wastewater purification and reuse system for the production of heat-sensitive coatings. Background Technology

[0002] In recent years, with increasing environmental awareness and increasingly stringent regulations, the thermal coatings manufacturing industry has faced severe wastewater treatment challenges. Traditional wastewater treatment methods typically employ batch processing, which suffers from low efficiency and unstable treatment performance. Although some companies have attempted to introduce automated equipment, they still face numerous technical bottlenecks.

[0003] Currently, the most advanced wastewater treatment systems in the industry typically employ a PLC controller in conjunction with multiple independent sensors and actuators. While this method improves automation to some extent, it still has several shortcomings. First, the various treatment units often operate independently, lacking an effective coordination mechanism, resulting in low overall treatment efficiency. Second, due to the complex and fluctuating composition of heat-sensitive coating wastewater, a single control strategy is insufficient to handle various complex situations, often leading to unstable treatment and unsatisfactory results.

[0004] Furthermore, existing systems have significant shortcomings in data acquisition and analysis. Most systems can only perform simple data recording, lacking in-depth analysis and predictive capabilities, and thus cannot provide valuable decision support for production management. At the same time, the systems have poor scalability and adaptability, making it difficult to meet the needs of different production scales and types of heat-sensitive coating production lines.

[0005] Most critically, existing systems have significant shortcomings in the coordinated regulation of pH and temperature. Most systems either focus only on pH adjustment or control temperature alone, neglecting the interaction between the two. This results in low regulation accuracy, affecting the effectiveness of wastewater treatment and the quality of reused water. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a novel wastewater purification and reuse system for the production of heat-sensitive coatings. This system aims to achieve highly 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 the quality of reused water.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A wastewater purification and reuse system for the production of heat-sensitive coatings includes: The data acquisition module is used for: The pH value and temperature of the heat-sensitive paint wastewater flowing into the mixing tank were collected; Collect the pH value and temperature of the prepared liquid in the mixing tank; The wastewater pH adjustment controller, which communicates with the data acquisition module, is used for: Receive the pH value of the heat-sensitive paint wastewater sent by the data acquisition module; Based on the comparison between the pH value of the wastewater from the heat-sensitive coating and the set target pH value, a pH adjustment coefficient is generated. Based on the pH adjustment coefficient, an instruction to add an alkaline solution is generated; The liquid alkalinity adjustment device, which is communicatively connected to the wastewater pH adjustment controller, is used for: Receive instructions to add alkaline solution; Add an alkaline solution to the mixing tank; The pH adjustment controller for the first preparation solution is connected in communication with the data acquisition module and is used for: Receive the pH value and temperature of the prepared liquid from the data acquisition module; Based on the comparison between the pH value of the prepared liquid and the set target pH value, a pH adjustment coefficient is generated; Based on the pH adjustment coefficient, generate liquid temperature adjustment instructions; The pH adjustment mechanism for the preparation solution is communicatively connected to the pH adjustment controller of the first preparation solution and is used for: Receive liquid temperature adjustment commands; The temperature of the prepared liquid in the mixing tank is adjusted.

[0008] Preferably, the liquid alkalinity adjusting device includes: Alkalinity conditioning storage chamber, used for storing alkaline solutions; The alkalinity conditioning tank controller, which communicates with the wastewater pH conditioning controller and the alkalinity conditioning storage tank, is used for: Receive instructions to add alkaline solution; The alkaline conditioning storage chamber is controlled to input the alkaline solution into the mixing tank; The first valve, located on the connecting pipe between the alkaline conditioning storage tank and the mixing tank, is communicatively connected to the alkaline conditioning tank controller and is used for: It responds to the control commands of the alkaline conditioning chamber controller to perform opening and closing operations.

[0009] Preferably, the data acquisition module includes: A pH sensor is installed inside the mixing tank to detect the pH value of the liquid in the mixing tank. A temperature sensor is installed inside the mixing tank to detect the temperature of the liquid inside.

[0010] Preferably, both the pH sensor and the temperature sensor are water-resistant sensors capable of detecting pH value and liquid temperature.

[0011] Preferably, the pH adjustment mechanism for the preparation solution includes: The second pH adjustment controller for the prepared solution is connected in communication with the data acquisition module and is used for: Receive liquid temperature data sent by the data acquisition module; Based on the liquid temperature, a liquid temperature regulation coefficient is generated; Based on the liquid temperature regulation coefficient, generate temperature regulation commands; The liquid temperature regulating device, which is communicatively connected to the second pH regulating controller of the preparation solution, is used for: Receive temperature adjustment commands; The temperature of the prepared liquid in the mixing tank is adjusted.

[0012] Preferably, the liquid temperature regulating device includes: A temperature-regulating storage compartment is used to store temperature-regulating substances. The temperature-regulating chamber controller, which is communicatively connected to the second pH adjustment controller for the prepared solution and the temperature-regulating storage chamber, is used for: Receive temperature adjustment commands; The temperature-controlled storage chamber is used to input the temperature-controlled substance into the mixing tank; The second valve, located on the connecting pipe between the temperature-regulating storage chamber and the mixing tank, is communicatively connected to the temperature-regulating chamber controller and is used for: It responds to the control commands of the temperature-regulating chamber controller to achieve opening and closing operations.

[0013] As a preferred option, it also includes: The display module is communicatively connected to both the wastewater pH adjustment controller and the first preparation solution pH adjustment controller, and is used for: Displays the output values ​​and information collection and recording information of the wastewater pH adjustment controller and the first preparation solution pH adjustment controller; The storage module is communicatively connected to both the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller, and is used for: The system stores the values ​​and information collected from the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller.

[0014] As a preferred option, it also includes: The information transmission module is connected to the wastewater pH adjustment controller, the first conditioning solution pH adjustment controller, and the user's smart terminal, respectively, for the following purposes: The values ​​and information collected and recorded by the wastewater pH adjustment controller and the first preparation solution pH adjustment controller are transmitted to the user's smart terminal.

[0015] As a preferred option, it also includes: The management module is communicatively connected to both the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller, and is used for: Data processing is performed on the wastewater pH adjustment controller and the first preparation solution pH adjustment controller.

[0016] Preferably, the thermal temperature control chamber controller includes: The liquid temperature adjustment coefficient receiving unit is communicatively connected to the second pH adjustment controller of the preparation solution and is used to receive the liquid temperature adjustment coefficient. The liquid temperature regulation value calculation unit is communicatively connected to the liquid temperature regulation coefficient receiving unit and is used for: Based on the liquid temperature adjustment coefficient, determine the target liquid temperature after preparation; Generate liquid temperature adjustment value; The thermal temperature regulating substance determination unit, which is communicatively connected to the liquid temperature regulation value calculation unit, is used for: Based on the liquid temperature regulation value, determine the solubility and temperature of the thermal temperature regulating substance; The liquid level information comparison unit, which is communicatively connected to the thermal temperature regulating substance determination unit and the thermal temperature regulating storage chamber, is used for: Receive the liquid level information of the temperature-regulating substance in the temperature-regulating storage chamber; Based on the solubility, temperature, and liquid level information of the thermally temperature-regulated substance, liquid level comparison results are generated. The valve control unit, which communicates with the liquid level information comparison unit, is used for: The opening and closing of the second valve are controlled based on the liquid level comparison results.

[0017] The system of the present invention has the following significant technical effects: From a macro perspective, the system of this invention achieves intelligent control of the entire wastewater treatment process through innovative overall architecture design. An organic collaborative mechanism is formed among the various modules of the system, constructing a closed-loop intelligent control system from data acquisition and parameter analysis to control execution. This holistic design not only significantly improves the system's operating efficiency but also substantially enhances its adaptability and reliability.

[0018] Regarding module coordination, the system of this invention cleverly resolves the contradiction between pH and temperature control. By monitoring the wastewater's pH and temperature in real time through a data acquisition module, the wastewater pH controller and the preparation solution pH controller can respond promptly to changes in these parameters. This coordinated control strategy not only improves the accuracy of pH adjustment but also ensures that temperature changes do not adversely affect the pH, thereby achieving a more stable and efficient wastewater treatment process.

[0019] Delving into the microscopic level, this invention has achieved technological breakthroughs in several key aspects. For example, in sensor design, a special material with strong water resistance is used, greatly extending the sensor's lifespan and reducing maintenance costs. In terms of control algorithms, advanced fuzzy PID control is introduced, which can adaptively adjust control parameters according to real-time changes in wastewater characteristics, significantly improving the system's control accuracy and response speed.

[0020] Furthermore, the system of this invention exhibits significant synergistic and complementary effects. For example, precise pH control not only directly improves wastewater treatment efficiency but also creates favorable conditions for subsequent biological treatment, further enhancing overall treatment efficiency. Simultaneously, real-time data monitoring and analysis not only support the current treatment process but also provide valuable data support for long-term process optimization.

[0021] In summary, the wastewater purification and reuse system for the production of thermosensitive coatings of this invention, through innovative overall design and breakthroughs in key technologies, achieves a comprehensive improvement in wastewater treatment efficiency, treatment quality, and system reliability. It not only solves the current wastewater treatment challenges faced by the thermosensitive coatings industry but also provides a new technological path for the green development of the entire coatings industry, possessing significant economic value and environmental benefits. Attached Figure Description

[0022] Figure 1 This is a flowchart of the overall system of the present invention.

[0023] Figure 2 This is a flowchart of the data acquisition module of the present invention.

[0024] Figure 3 This is a flowchart of the liquid alkalinity adjustment device of the present invention.

[0025] Figure 4 This is a flowchart of the pH adjustment mechanism for the preparation solution of the present invention.

[0026] Figure 5 This is a flowchart of the thermal temperature regulating chamber controller of the present invention. Detailed Implementation

[0027] like Figure 1-5 As shown, this invention provides a wastewater purification and reuse system for the production of heat-sensitive coatings. Specifically, this invention relates to a system capable of automated wastewater treatment and reuse. The invention will be further described in detail below with reference to specific embodiments.

[0028] Preferably, the wastewater purification and reuse system for the production of heat-sensitive coatings of the present invention includes a data acquisition module 1, a wastewater pH adjustment controller 2, a liquid alkalinity adjustment device 3, a first preparation solution pH adjustment controller 4, and a preparation solution pH adjustment mechanism 5.

[0029] Specifically, the data acquisition module 1 is used to collect the pH value and temperature of the heat-sensitive paint 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 employ corrosion-resistant pH and temperature sensors to ensure stable performance even under long-term contact with wastewater. For example, a glass electrode pH sensor can be selected, with a measurement range of 0-14 pH and an accuracy of ±0.01 pH; the temperature sensor can be a PT100 platinum resistance thermometer, with a measurement range of -50℃ to 150℃ and an accuracy of ±0.1℃.

[0030] Wastewater pH controller 2 is communicatively connected to data acquisition module 1 to receive the pH value of the heat-sensitive paint wastewater sent by data acquisition module 1. Based on the comparison between the received pH value and the preset target pH value, wastewater pH controller 2 generates a pH adjustment coefficient. Here, the target pH value is usually set between 6.5 and 8.5, because this range is suitable for the growth of most microorganisms and is beneficial to the subsequent biological treatment process. The pH adjustment coefficient can be calculated using a proportional-integral-derivative (PID) algorithm to achieve precise control.

[0031] Furthermore, the wastewater pH control controller 2 generates an alkaline solution addition command based on the generated pH adjustment coefficient. This command includes information such as the type and amount of alkaline solution to be added. For example, when the wastewater pH is below 6.5, the system may command the addition of sodium hydroxide solution; when the pH is close to the target value, it may choose to add sodium carbonate solution to achieve a gentler adjustment.

[0032] The liquid alkalinity adjustment device 3 is communicatively connected to the wastewater pH adjustment controller 2, and is used to receive alkaline solution addition instructions and add an appropriate amount of alkaline solution to the mixing tank accordingly. In a preferred embodiment of the present invention, the liquid alkalinity adjustment 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.

[0033] The first pH adjustment controller 4 is communicatively connected to the data acquisition module 1 to receive the pH value and temperature of the prepared liquid from the data acquisition module 1. Similar to the wastewater pH adjustment controller 2, the first pH adjustment controller 4 generates a new pH adjustment coefficient based on the comparison 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.

[0034] Finally, the first pH adjustment controller 4 generates a liquid temperature adjustment command based on the generated pH adjustment coefficient. This is because temperature affects the measurement and adjustment of pH, so the temperature factor needs to be considered simultaneously. For example, when the temperature rises, the degree of ionization of water increases, and the pH value will decrease slightly under the same conditions. Therefore, the liquid temperature adjustment command takes this effect into account to achieve more precise pH control.

[0035] The pH adjustment mechanism 5 of the preparation solution is communicatively connected to the first pH adjustment controller 4 of the preparation solution. It is used to receive liquid temperature adjustment commands and adjust the liquid temperature of the prepared liquid in the preparation tank. In practical applications, the pH adjustment mechanism 5 of the preparation solution may include a heater and a cooler, which can accurately adjust the liquid temperature within the range of 15-40℃, with an accuracy of ±0.5℃.

[0036] Next, the structure of the liquid alkalinity adjusting device 3 is further refined in this invention. The liquid alkalinity adjusting device 3 includes an alkalinity adjusting storage chamber 31, an alkalinity adjusting chamber controller 32, and a first valve 33.

[0037] The alkalinity adjustment storage chamber 31 is used to store alkaline solutions. In practical applications, multiple storage chambers can be set up to store different types and concentrations of alkaline solutions, such as 10% sodium hydroxide solution and 5% sodium carbonate solution, to meet different pH adjustment needs.

[0038] The alkaline conditioning tank controller 32 is communicatively connected to the wastewater pH conditioning controller 2 and the alkaline conditioning storage tank 31. Its main function is to receive alkaline solution addition commands and control the alkaline conditioning storage tank 31 to input an appropriate amount of alkaline solution into the mixing tank. In a preferred embodiment of the invention, the alkaline conditioning tank controller 32 employs a programmable logic controller (PLC), which can achieve precise flow control with a control accuracy of ±0.1%.

[0039] The first valve 33 is installed on the connecting pipe between the alkaline conditioning storage tank 31 and the mixing tank, and is communicatively connected to the alkaline conditioning tank controller 32. It responds to control commands from the alkaline conditioning tank controller 32 to perform opening and closing operations. In this invention, the first valve 33 is preferably a solenoid valve, with a response time of up to 20ms, ensuring rapid response and precise control.

[0040] The data acquisition module 1 includes a pH sensor 11 and a temperature sensor 12, both of which are installed in the mixing tank.

[0041] 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, pH sensor 11 employs a composite electrode, comprising a measuring electrode and a reference electrode, capable of accurate measurement within the pH range of 0-14, with a response time of less than 15 seconds and a measurement accuracy of ±0.01 pH.

[0042] Temperature sensor 12 is used to detect the temperature of the liquid in the mixing tank. Preferably, temperature sensor 12 is a PT100 platinum resistance temperature sensor with a measurement range of -50℃ to 150℃ and an accuracy of ±0.1℃. Accurate temperature measurement is crucial for pH correction and adjustment, as pH changes with temperature.

[0043] The wastewater purification and reuse system for the production of thermosensitive coatings of this invention achieves precise control of wastewater pH and temperature through the coordinated operation of the aforementioned modules. This precise control brings several beneficial effects: First, it ensures that the treated wastewater meets reuse standards, reducing the use of fresh water and lowering production costs; second, precise pH control facilitates subsequent biological treatment processes, improving overall treatment efficiency; third, the automated control system reduces manual operation, improving treatment consistency and reliability; finally, real-time monitoring and adjustment functions enable the system to quickly respond to changes in wastewater properties, enhancing the stability and adaptability of the treatment process. Further, in other embodiments of this invention, both the pH sensor 11 and the temperature sensor 12 are water-resistant sensors capable of detecting pH and liquid temperature. This design takes into account the special characteristics of wastewater from the production of thermosensitive coatings, such as the potential presence of various chemical substances and suspended particles.

[0044] In a preferred embodiment of the present invention, the pH sensor 11 employs a composite electrode protected by a Teflon membrane. The Teflon membrane exhibits excellent chemical resistance and antifouling properties, maintaining stable measurement performance even after prolonged immersion in wastewater. Furthermore, the sensor utilizes a planar membrane structure design, making it less prone to clogging by suspended solids in the wastewater, thereby ensuring measurement accuracy and extending the sensor's lifespan.

[0045] The temperature sensor 12 is preferably a titanium alloy housing resistance thermometer. Titanium alloy has excellent corrosion resistance and can resist the erosion of most chemicals. At the same time, the sensor adopts a fast response design, with a response time of less than 1 second, which can promptly reflect changes in wastewater temperature and provide an important reference for accurate pH measurement and adjustment.

[0046] This water-resistant design not only improves the stability and reliability of the system but also significantly reduces maintenance costs. In practical applications, these sensors can operate continuously for 3-6 months without replacement or special maintenance, significantly improving the system's operating efficiency.

[0047] Furthermore, the pH adjustment mechanism 5 for the preparation solution includes a second pH adjustment controller for the preparation solution and a liquid temperature adjustment device. The second pH adjustment controller for the preparation solution is communicatively connected to 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 command based on the liquid temperature adjustment coefficient.

[0048] In one embodiment of the present invention, the second pH adjustment controller for the preparation solution employs a fuzzy PID control algorithm. This algorithm can dynamically adjust the PID parameters based on the deviation between the current liquid temperature and the target temperature and its rate of change, thereby achieving more precise 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, it will reduce the proportional coefficient to avoid overshoot, while increasing the integral action to eliminate static error.

[0049] The liquid temperature regulating device is communicatively connected to the second pH regulating controller for the prepared liquid, and is used to receive temperature regulation commands to regulate the temperature of the prepared liquid in the mixing tank. In practical applications, the liquid temperature regulating device may include a heater and a cooler.

[0050] The heater section can use electric heating elements with an adjustable power range of 5-50kW, capable of rapidly increasing the temperature of large volumes of wastewater. The cooler section can use plate heat exchangers with a heat exchange area selectable between 10-100㎡, effectively reducing wastewater temperature. This bidirectional adjustment design allows the system to precisely control the wastewater temperature within the target range under various environmental conditions.

[0051] The liquid temperature regulating device further includes a heat temperature regulating storage chamber, a heat temperature regulating chamber controller, and a second valve 523.

[0052] The temperature-regulating storage chamber is used to store temperature-regulating substances. In a preferred embodiment of the invention, the storage chamber employs a double-layer insulation design, with an inner layer of stainless steel and an outer layer of polyurethane foam, effectively maintaining the temperature of the regulated substance and reducing heat loss. Depending on actual needs, hot or cold water can be selected as the regulated substance.

[0053] The temperature-regulating chamber controller is communicatively connected to the second pH-regulating controller for the prepared solution and the temperature-regulating storage chamber. Its main function is to receive temperature regulation commands and control the temperature-regulating storage chamber to input the appropriate amount of regulating substance into the preparation tank. In this invention, the temperature-regulating chamber controller uses an industrial-grade embedded computer, which has high reliability and abundant interface resources, enabling precise flow and temperature control.

[0054] The second valve 523 is installed on the connecting pipe between the heat and temperature regulating storage compartment and the mixing tank, and is communicatively connected to the heat and temperature regulating compartment controller. It responds to control commands from the heat and temperature regulating compartment controller to perform opening and closing operations. In this invention, the second valve 523 is preferably a proportional regulating valve, whose opening degree can be continuously adjusted within the range of 0-100%, achieving more precise flow control.

[0055] Finally, the system of the present invention also includes a display module 6 and a storage module 7. These two modules are communicatively connected to the wastewater pH adjustment controller 2 and the first conditioning solution pH adjustment controller 4, respectively, and are used to display and store the numerical values ​​and information collection records output by these controllers.

[0056] Display module 6 preferably uses an industrial-grade touchscreen, featuring high brightness, wide viewing angle, and dust and water resistance, making it suitable for long-term use in industrial environments. It can not only display various parameters in real time but also present data trends in chart form, allowing operators to intuitively understand the system's operating status.

[0057] Storage module 7 uses an industrial-grade solid-state drive, featuring high-speed read / write speeds and shock resistance. It can reliably store large amounts of historical data for extended periods, providing crucial information for system optimization and fault diagnosis. Furthermore, storage module 7 supports data encryption to ensure the security of sensitive information.

[0058] Through the coordinated operation of these functional modules, the wastewater purification and reuse system for the production of thermosensitive coatings of this invention not only achieves efficient wastewater treatment and reuse but also provides rich data support for production management, further enhancing the intelligence level of the entire production process. Continuing to describe other embodiments of the invention, this system also includes an information transmission module 8. This module is communicatively connected to the wastewater pH adjustment controller 2, the first mixing solution pH adjustment controller 4, and the user's intelligent terminal, respectively, and is used to transmit the values ​​output by these controllers and the information collection and recording information to the user's intelligent terminal.

[0059] In a preferred embodiment of the present invention, the information transmission module 8 adopts an industrial-grade 4G / 5G wireless communication module, supporting multiple communication protocols such as MQTT and HTTP, ensuring the stability and security of data transmission. This module can push system operation data to the user's smart terminal in real time, enabling managers to monitor the system's operating status anytime, anywhere.

[0060] For example, when the pH value or temperature of the wastewater exceeds a 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, enabling managers to promptly identify and address potential problems and avoid possible production accidents.

[0061] In addition, information transmission module 8 also supports remote control functionality. Authorized users can remotely adjust system parameters, such as target pH value and temperature threshold, via smart terminals, thereby achieving more flexible system management. This function is particularly important in emergency situations, enabling managers to respond quickly to changes in production needs.

[0062] The system of the present invention also includes a management module 9. This module is communicatively connected to the wastewater pH adjustment controller 2 and the first preparation solution pH adjustment controller 4, respectively, and is used to process data from these controllers.

[0063] In practical applications, management module 9 can be considered the system's central processing unit, responsible for coordinating the work of various modules. It employs a high-performance industrial computer, equipped with a multi-core processor and large-capacity memory, enabling it to process data streams from multiple controllers simultaneously.

[0064] The core functions of management module 9 include data analysis and decision support. For example, it can predict the changing trends of wastewater pH and temperature by analyzing historical data, thereby adjusting treatment parameters in advance and implementing a more proactive control strategy. Furthermore, management module 9 also has a self-learning function, capable of optimizing control algorithms based on long-term operating data to continuously improve the system's processing efficiency.

[0065] In handling abnormal situations, management module 9 plays a crucial role. When abnormal data is detected, it immediately activates preset emergency plans, such as automatically switching to backup equipment and adjusting processing procedures, to minimize the impact of abnormal situations on production.

[0066] Finally, the thermal temperature control chamber controller includes a liquid temperature regulation coefficient receiving unit 5221, a liquid temperature regulation value calculation unit 5222, a thermal temperature regulation substance determination unit 5223, a liquid level information comparison unit 5224, and a valve control unit 5225. The coordinated operation of these units achieves precise temperature regulation control.

[0067] The liquid temperature regulation coefficient receiving unit 5221 is communicatively connected to the second pH adjustment controller of the preparation solution and is used to receive the liquid temperature regulation coefficient. In this invention, this unit uses a high-speed data acquisition card with a sampling rate of up to 1MHz to ensure that rapidly changing temperature signals can be captured.

[0068] The liquid temperature regulation value calculation unit 5222 is communicatively connected to the liquid temperature regulation coefficient receiving unit 5221. Based on the received liquid temperature regulation coefficient, it determines the target liquid temperature of the prepared liquid and generates the liquid temperature regulation value. In practical applications, this unit employs an optimized PID algorithm, which can quickly calculate the optimal regulation value based on the deviation between the current temperature and the target temperature.

[0069] The thermal temperature regulating substance determination unit 5223 is communicatively connected to the liquid temperature regulation value calculation unit 5222, and is used to determine the solubility and temperature of the thermal temperature regulating substance based on the liquid temperature regulation value. This unit has a built-in database of the physical properties of various commonly used regulating substances, and can select the most suitable regulating substance according to the current needs.

[0070] The liquid level information comparison unit 5224 is communicatively connected to the thermal temperature regulating substance determination unit 5223 and the thermal temperature regulating storage chamber. It receives the liquid level information of the thermal temperature regulating substance within the storage chamber 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 sufficient regulating substance available.

[0071] Finally, the valve control unit 5225 is communicatively connected to the liquid level information comparison unit 5224, and controls the opening and closing of the second valve 523 based on the liquid level comparison result. This unit adopts high-precision PWM control technology, which can achieve precise adjustment of the valve opening, thereby accurately controlling the amount of regulating substance added.

[0072] Through the coordinated operation of these sophisticated control units, the system of this invention can achieve precise regulation of wastewater temperature, thereby creating favorable conditions for precise pH control. This multi-parameter coordinated control strategy greatly improves the efficiency and quality of wastewater treatment, providing strong technical support for wastewater reuse in the production process of thermosensitive coatings.

[0073] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the scheme and improved concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A system for purifying and recycling wastewater used in the production of heat-sensitive paint, characterized by comprising: include: The data acquisition module is used for: The pH value and temperature of the heat-sensitive paint wastewater flowing into the mixing tank were collected; Collect the pH value and temperature of the prepared liquid in the mixing tank; The wastewater pH adjustment controller, which is communicatively connected to the data acquisition module, is used for: Receive the pH value of the heat-sensitive paint wastewater sent by the data acquisition module; Based on the comparison between the pH value of the heat-sensitive coating wastewater and the set target pH value, a pH adjustment coefficient is generated; Based on the pH adjustment coefficient, an instruction to add alkaline solution is generated; The liquid alkalinity adjustment device, which is communicatively connected to the wastewater pH adjustment controller, is used for: Receive the instruction to add the alkaline solution; Add an alkaline solution to the mixing tank; The liquid alkalinity adjustment device includes: Alkalinity conditioning storage chamber, used for storing alkaline solutions; An alkaline conditioning tank controller, communicatively connected to the wastewater pH conditioning controller and the alkaline conditioning storage tank, is used for: Receive the instruction to add the alkaline solution; The alkaline conditioning storage chamber is controlled to input the alkaline solution into the mixing tank; A first valve, installed on the connecting pipe between the alkaline conditioning storage tank and the mixing tank, and communicatively connected to the alkaline conditioning tank controller, is used for: The alkaline conditioning chamber controller responds to control commands to perform opening and closing operations. The first pH adjustment controller for the preparation solution is communicatively connected to the data acquisition module and is used for: Receive the pH value and temperature of the prepared liquid sent by the data acquisition module; Based on the comparison between the pH value of the prepared liquid and the set target pH value, a pH adjustment coefficient is generated; Based on the pH adjustment coefficient, a liquid temperature adjustment command is generated; The pH adjustment mechanism for the preparation solution is communicatively connected to the first pH adjustment controller for the preparation solution, and is used for: Receive the liquid temperature adjustment command; The temperature of the prepared liquid in the mixing tank is adjusted. The pH adjustment mechanism for the prepared solution includes: The second pH adjustment controller for the preparation solution is communicatively connected to the data acquisition module and is used for: Receive the liquid temperature sent by the data acquisition module; Based on the liquid temperature, a liquid temperature adjustment coefficient is generated; Based on the liquid temperature regulation coefficient, a temperature regulation command is generated; The liquid temperature regulating device, which is communicatively connected to the second pH regulating controller of the prepared solution, is used for: Receive the temperature adjustment command; The temperature of the prepared liquid in the mixing tank is adjusted. The liquid temperature regulating device includes: A temperature-regulating storage compartment is used to store temperature-regulating substances. A temperature-regulating chamber controller, communicatively connected to the second pH-regulating controller for the prepared solution and the temperature-regulating storage chamber, is used for: Receive the temperature adjustment command; The temperature-regulating storage chamber is controlled to input the temperature-regulating substance into the mixing tank; The second valve, installed on the connecting pipe between the heat and temperature regulating storage chamber and the mixing tank, is communicatively connected to the heat and temperature regulating chamber controller and is used for: The opening and closing operation is realized in response to the control command of the heat and temperature regulating chamber controller; The thermal temperature regulating chamber controller includes: The liquid temperature adjustment coefficient receiving unit is communicatively connected to the second pH adjustment controller of the preparation solution and is used to receive the liquid temperature adjustment coefficient; The liquid temperature regulation value calculation unit, which is communicatively connected to the liquid temperature regulation coefficient receiving unit, is used for: Based on the liquid temperature adjustment coefficient, the target liquid temperature of the prepared liquid is determined; Generate liquid temperature adjustment value; The thermal temperature regulating substance determination unit, which is communicatively connected to the liquid temperature regulation value calculation unit, is used for: Based on the liquid temperature regulation value, the solubility and temperature of the thermal temperature regulating substance are determined; The liquid level information comparison unit is communicatively connected to the heat-temperature regulating substance determination unit and the heat-temperature regulating storage chamber, and is used for: Receive the liquid level information of the temperature-regulating substance in the temperature-regulating storage chamber; Based on the solubility, temperature, and liquid level information of the heat-temperature regulating substance, a liquid level comparison result is generated; The valve control unit, which is communicatively connected to the liquid level information comparison unit, is used for: Based on the liquid level comparison results, the opening and closing of the second valve are controlled.

2. The wastewater purification recycling system for heat-sensitive paint production according to claim 1, characterized by The data acquisition module includes: A pH sensor is installed in the mixing tank to detect the pH value of the liquid in the mixing tank. A temperature sensor is installed inside the mixing tank to detect the temperature of the liquid inside the mixing tank.

3. The system for purification and reuse of wastewater from heat-sensitive paint production according to claim 2, characterized in that, Both the pH sensor and the temperature sensor are water-resistant sensors capable of detecting pH value and liquid temperature.

4. The system for purification and reuse of wastewater from heat-sensitive paint production according to claim 1, characterized in that, Also includes: The display module is communicatively connected to both the wastewater pH adjustment controller and the first prepared solution pH adjustment controller, and is used for: Displays the values ​​and information collected and recorded by the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller; The storage module is communicatively connected to both the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller, and is used for: The system stores the numerical values ​​and information collected from the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller.

5. The system for purification and reuse of wastewater from heat-sensitive paint production according to claim 4, characterized in that, Also includes: The information transmission module is communicatively connected to the wastewater pH adjustment controller, the first conditioning solution pH adjustment controller, and the user's smart terminal, respectively, and is used for: The values ​​and information collected and recorded by the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller are transmitted to the user's smart terminal.

6. The system for purification and reuse of wastewater from heat-sensitive paint production according to claim 1, characterized in that, Also includes: The management module is communicatively connected to both the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller, and is used for: Data processing is performed on the wastewater pH adjustment controller and the first conditioning solution pH adjustment controller.

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