Lime coagulation dosing device based on self-adaptive control and use method

Abstract

The invention discloses a lime coagulation dosing device based on self-adaptive control and a use method, and belongs to the technical field of sewage treatment. The device comprises a raw material supply unit, a dissolving and mixing unit, a dosing execution unit, a monitoring sensing unit and a control center unit, the raw material supply unit is connected with one side of the dissolving and mixing unit, and the other side of the dissolving and mixing unit is connected with the clarification tank; the dosing execution unit is arranged on a pipeline between the dissolving and mixing unit and the clarification tank; the control center unit is connected with the dosing execution unit and the monitoring sensing unit; and the monitoring sensing unit is arranged in the clarification tank. The device synchronously responds to key indexes such as pH, turbidity and temperature, the dosage is automatically adjusted according to real-time data, manual intervention is reduced, and the equipment maintenance difficulty is reduced by accurately adding the dosage and reducing lime consumption and sludge yield.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a lime coagulation and dosing device based on adaptive control and a use method thereof. Background Art

[0002] In the field of sewage treatment, lime As an important coagulant, it plays an irreplaceable and critical role. Due to its unique chemical properties, it is widely used in multiple key links in the sewage treatment process. First, in terms of pH adjustment, lime can effectively neutralize acidic substances in sewage, adjusting the pH value of sewage to a range suitable for subsequent treatment processes, creating favorable conditions for microbial growth and chemical reactions. Second, for the removal of heavy metal ions, lime can chemically react with heavy metals in sewage to form insoluble hydroxide precipitates, thereby achieving effective separation and removal of heavy metals and reducing the potential harm of sewage to the environment. In addition, lime can promote the sedimentation of suspended solids. By changing the surface charge and colloidal stability of suspended particles in sewage, suspended solids aggregate to form larger flocs, accelerating the sedimentation process and improving the clarity of sewage.

[0003] However, although lime has many advantages in sewage treatment, the current traditional lime addition method has many problems that need to be solved, which seriously restricts the effect and efficiency of sewage treatment.

[0004] Manual control is a traditional lime dosing method that relies heavily on the operator's experience to adjust the lime dosage. This approach has significant limitations in practical applications. Due to the complexity and variability of water quality, it is difficult for operators to accurately determine the required lime dosage based on experience. When water quality suddenly changes, such as a change in the sewage source or the sudden discharge of industrial wastewater, operators are often unable to make timely and accurate adjustments, resulting in a lime dosage that is difficult to meet actual treatment needs. Excessive lime addition not only increases sludge production, placing a greater burden on subsequent sludge treatment and disposal, but also wastes lime resources and increases treatment costs. Insufficient lime addition, on the other hand, fails to achieve the desired treatment effect, resulting in substandard effluent quality and environmental pollution.

[0005] The fixed ratio control method is to add lime in a fixed ratio according to the water flow rate. Although this method simplifies the operation process to a certain extent, it ignores the water quality parameters (such as In the actual sewage treatment process, the influent water quality often fluctuates significantly with the change of time, season, production process and other factors. For example, in the rainy season, due to the scouring of rainwater, a large amount of sediment and impurities may be mixed into the sewage, resulting in a significant increase in turbidity; and in some industrial production processes, high-concentration acidic wastewater may be suddenly discharged, causing the sewage to In this case, adding lime at a fixed ratio obviously cannot meet the actual treatment needs, resulting in unstable treatment effects and difficulty in ensuring the effluent water quality.

[0006] Simple feedback control methods, such as those based on Single parameter PID control, although it can be based on The system automatically adjusts the amount of lime added based on the change of the water quality value, but it also has obvious defects. On the one hand, its response speed is slow. When the water quality changes suddenly, the system needs a certain amount of time to adjust the amount of lime added. During this period, the sewage may not be treated in a timely and effective manner. On the other hand, the sewage treatment process is a complex system with multiple parameters coupled. Controlling a single parameter cannot fully consider the impact of other water quality parameters. For example, for wastewater with high turbidity and low pH, it is necessary to consider both turbidity and pH. The two parameters must be coordinated to control the amount of lime added to achieve the best treatment effect. However, simple feedback control methods are obviously unable to meet this requirement.

[0007] In addition to the problems with the above-mentioned control methods, the existing technology also faces the difficulties of concentration adjustment lag and equipment maintenance. The concentration adjustment lag is mainly due to the fact that manual or semi-automatic technology relies on delayed feedback to adjust the amount of lime added. When the water quality changes suddenly, such as a sudden increase in turbidity caused by heavy rain, the system cannot perceive this change in time and make corresponding adjustments, resulting in a mismatch between the amount of lime added and the actual demand, affecting the treatment effect. The difficulty of equipment maintenance is mainly reflected in the lime powder getting damp and hardening. Lime powder has strong hygroscopicity and is easily damp and hardened during storage and transportation, thereby clogging pipes and screw feeders. Once a blockage occurs, the machine needs to be shut down, disassembled and cleaned, which not only affects the continuity of sewage treatment, but also increases the maintenance cost and labor intensity of the equipment. Summary of the Invention

[0008] Existing technologies suffer from manual control that relies on experience and is difficult to cope with sudden changes in water quality; fixed-ratio control that ignores dynamic changes in water quality; and simple feedback control that is slow to respond and unable to handle multi-parameter coupling. Furthermore, there are problems with concentration adjustment lag and lime hardening due to moisture, making equipment maintenance difficult. The present invention provides a lime coagulation and dosing device based on adaptive control. This device responds synchronously to key indicators such as pH, turbidity, and temperature, automatically adjusting the dosage based on real-time data, reducing manual intervention. By precisely dosing the dosage, it reduces lime consumption and sludge production, and eases equipment maintenance.

[0009] In order to achieve the above objectives, the present invention provides the following technical solutions.

[0010] In the first aspect, the present invention provides a lime coagulation and dosing device based on adaptive control, comprising a raw material supply unit, a dissolving and mixing unit, a dosing execution unit, a monitoring sensor unit and a control central unit; the raw material supply unit is connected to one side of the dissolving and mixing unit, and the other side of the dissolving and mixing unit is connected to a clarification tank; the dosing execution unit is arranged on a pipeline between the dissolving and mixing unit and the clarification tank; the control central unit is connected to the dosing execution unit and the monitoring sensor unit; the monitoring sensor unit is arranged in the clarification tank.

[0011] As a further improvement of the present invention, the monitoring sensing unit includes a turbidity sensor, a pH sensor, a conductivity sensor and a temperature sensor; the turbidity sensor is arranged in the clarification tank; the pH sensor, the conductivity sensor and the temperature sensor are arranged on the water inlet pipe of the clarification tank.

[0012] As a further improvement of the present invention, the dosing execution unit includes a variable frequency metering pump group; the variable frequency metering pump group includes a frequency converter, a dosing pump and a flow meter; the dosing pump is arranged on the pipeline between the dissolution and mixing unit and the clarification tank; the frequency converter is arranged between the dosing pump and the control center unit; the flow meter is arranged between the dosing pump and the clarification tank.

[0013] As a further improvement of the present invention, the dissolution and mixing unit includes a dissolution tank, a maturation tank and a medicine storage tank; the inlet of the dissolution tank is connected to the raw material supply unit; the outlet of the dissolution tank is connected to the inlet of the maturation tank; and the outlet of the maturation tank is connected to the clarification tank.

[0014] As a further improvement of the present invention, a first agitator is provided in the dissolving tank.

[0015] As a further improvement of the present invention, a second stirrer is provided in the maturation box.

[0016] As a further improvement of the present invention, a third agitator is provided in the medicine storage box.

[0017] As a further improvement of the present invention, the control center unit includes a PLC controller; the PLC controller system monitoring unit, screening unit and execution unit.

[0018] As a further improvement of the present invention, it further includes an anti-clogging unit; the anti-clogging unit is arranged between the dosing execution unit and the clarification tank.

[0019] In a second aspect, the present invention provides a method for using a lime coagulation and dosing device based on adaptive control, comprising: S100: The monitoring sensor unit collects and obtains water quality data in the clarifier and sends the collected water quality data to the control center unit; S200: The control center unit performs data anomaly detection on the water quality data received from the monitoring sensor unit and determines whether to add lime based on the detection result; S300: The test result is normal. The raw material supply unit transports the lime to the dissolving and mixing unit. The dissolving and mixing unit stirs the added lime. The control center unit controls the dosing execution unit to transport the stirred lime solution to the clarifier.

[0020] Compared with the prior art, the present invention has the following beneficial effects: This invention accurately and in real time senses dynamic changes in water quality. The monitoring sensor unit simultaneously acquires key indicator data such as pH, turbidity, and temperature, and promptly feeds this data back to the central control unit. The central control unit conducts in-depth analysis and processing of this real-time data, enabling rapid and accurate assessment of water quality trends and automatic adjustment of dosing dosage. By integrating intelligent algorithms with real-time monitoring data, this device achieves simultaneous analysis and comprehensive processing of multiple parameters. The central control unit rapidly analyzes the interrelationships between various parameters, accurately grasping the underlying patterns of water quality changes. This allows for extremely rapid and scientifically sound dosing decisions and rapidly directs the dosing execution unit to complete the dosing operation. This rapid and precise control method significantly improves the device's response speed and control accuracy, ensuring timely and accurate dosing of chemicals, effectively enhancing water treatment efficiency. By precisely dosing chemicals and automatically adjusting dosage based on real-time changes in water quality, the device avoids overdosing. This not only significantly reduces lime consumption and chemical procurement costs, but also reduces sludge generation at the source.

[0021] Furthermore, by optimizing the device's structure and operating mode, this device effectively reduces lime's contact time with air, lowering the likelihood of lime becoming damp and hardened. Furthermore, precise dosing control reduces residual chemicals within the device, further minimizing the risk of clogging and failure. This makes the device more stable and reliable, reduces the frequency and difficulty of maintenance, and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In the drawings: Figure 1 This is a structural schematic diagram of a lime coagulation and dosing device based on adaptive control according to the present invention; Figure 2 The present invention is a signal feedback flow chart of a lime coagulation and dosing device based on adaptive control.

[0023] In the figure, 1 is a lime storage tank; 2 is a screw feeder; 3 is a water supply pipe; 4 is a dissolving tank; 5 is a slaking tank; 6 is a medicine storage tank; 7 is a PLC controller; 8 is a clarifier; 9 is a turbidity sensor; 10 is a water inlet pipe; 101 is sensor; 102 is a conductivity sensor; 103 is a temperature sensor; 11 is a frequency converter; 12 is a dosing pump; 13 is a flow meter; 141 is a first stirrer; 142 is a second stirrer; 143 is a third stirrer. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] The present invention aims to solve the problems in the existing technology, such as manual control relying on experience and being difficult to deal with sudden changes in water quality, fixed ratio control ignoring dynamic changes in water quality, simple feedback control responding slowly and being unable to handle multi-parameter coupling, concentration adjustment lag and lime hardening due to moisture causing equipment maintenance difficulties. Figure 1 As shown, there are raw material supply unit, dissolving and mixing unit, dosing execution unit, monitoring sensor unit, anti-blocking unit and control center unit.

[0027] The raw material supply unit is connected to one side of the dissolving and mixing unit, and the other side of the dissolving and mixing unit is connected to the clarification tank 8; the dosing execution unit is arranged on the pipeline between the dissolving and mixing unit and the clarification tank 8; the anti-blocking unit is arranged on the pipeline between the dosing execution unit and the clarification tank 8; the control center unit is connected to the dosing execution unit and the monitoring sensor unit; the monitoring sensor unit is arranged in the clarification tank 8, and the monitoring sensor unit is connected to the control center unit.

[0028] The raw material supply unit includes a lime storage tank 1 and a screw feeder 2.

[0029] The dissolving and mixing unit includes a dissolving tank 4 , a ripening tank 5 and a medicine storage tank 6 .

[0030] The dosing execution unit includes a variable frequency metering pump group; the variable frequency metering pump group includes a frequency converter 11 , a dosing pump 12 and a flow meter 13 .

[0031] The monitoring sensor unit includes a turbidity sensor 9, Sensor 101 , conductivity sensor 102 and temperature sensor 103 .

[0032] The anti-clogging unit includes an ultrasonic concentration meter and a pipeline mechanical vibration device.

[0033] The control center unit includes a PLC controller 7 .

[0034] The outlet of lime storage tank 1 is connected to the inlet of screw feeder 2, the outlet of screw feeder 2 is located at the inlet of dissolution tank 4, the outlet of dissolution tank 4 is connected to the inlet of slaking tank 5, the outlet of slaking tank 5 is connected to the inlet of medicine storage tank 6, and the outlet of medicine storage tank 6 is connected to clarifier 8 via a pipeline. A first agitator 141 is provided in dissolution tank 4, a second agitator 142 is provided in slaking tank 5, and a third agitator tank 143 is provided in medicine storage tank 6.

[0035] A dosing pump 12 is provided on the pipeline between the medicine storage box 6 and the clarification tank 8 , a flow meter 13 is provided on the pipeline between the dosing pump 12 and the clarification tank 8 , and the dosing pump 12 and the flow meter 13 are also connected to the PLC controller 7 .

[0036] A turbidity sensor 9 is provided inside the clarifier 8, and a turbidity sensor 9 is provided on the water inlet pipe 10 of the clarifier 8. Sensor 101, conductivity sensor 102 and temperature sensor 103. Turbidity sensor 9, Sensor 101, conductivity sensor 102 and temperature sensor 103 are connected to the PLC sensor and send the collected data to the PLC sensor 7. Turbidity sensor 9, The sensor 101, the conductivity sensor 102 and the temperature sensor 103 all have a self-cleaning function, which can significantly reduce the impact of dirt.

[0037] The first stirrer 141 , the second stirrer 142 and the third stirrer 143 use vortex gradient stirring to mix evenly without dead angles. The blades are inclined and the rotation speed is adjustable.

[0038] The twin-screw feeder 2 features a double-helix anti-bridging design to prevent material blockage. It is frequency-controlled with an accuracy of ±0.5%. The blades of the twin-screw feeder 2 are laser-clad with tungsten carbide to improve performance and lifespan. The lime silo utilizes a rotating shaft silicon carbide sealing ring and nano-graphite filler to ensure a tight seal.

[0039] Calculation of stirring power of double screw feeder 2:

[0040] in: is the power criterion, =0.75 (turbulence number); is the stirring speed, ; D is the diameter of the stirring paddle, (pulp diameter); is the fluid density, .

[0041] Temperature control scheme: Jacket water flow rate: 1.5m / s (Reynolds number ) Temperature-solubility compensation model:

[0042] Where, is the target concentration after temperature compensation; is the initial concentration at the reference temperature (25°C).

[0043] The dosing pump 12 is a variable frequency start dosing pump.

[0044] An ultrasonic concentration meter and a mechanical vibration device are installed on the outer wall or on the pipe at the outlet of the dosing pump 12. These devices automatically activate according to predetermined conditions to physically disturb the slurry delivery pipe. The ultrasonic concentration meter uses a temperature-compensated algorithm to measure the liquid's sound velocity to determine the concentration or flow rate of the measured liquid. The mechanical vibration device automatically adjusts its vibration mode based on the pipe diameter to prevent pipe blockage. The pneumatic hammer parameters are shown in Table 1.

[0045] Table 1 Pneumatic hammering parameters

[0046] The PLC controller 7 includes a system monitoring unit, a screening unit, and an execution unit. The monitoring unit is used to monitor the physical conditions in the clarifier 8; the screening unit is used to screen the amount of lime milk added under different water quality scenarios during historical operation; and the execution unit is used to fine-tune the operating parameters based on the water quality feedback of the final sedimentation effect. When it is detected that the water quality parameters exceed the preset threshold, it is forced to switch to the backup control mode and trigger an alarm. Therefore, the PLC controller 7 can synchronously respond to key indicators such as pH, turbidity, and temperature, and automatically adjust the dosage based on real-time data, reducing manual intervention. By accurately dosing the dosage, it reduces lime consumption and sludge production, and reduces the difficulty of equipment maintenance. The PLC sensor 7 uses an industrial-grade PLC controller.

[0047] PLC controller 7 control logic adopts double closed-loop adaptive control: Among them, outer loop control (water quality-dosage): real-time parameter data feedback of raw water.

[0048]

[0049] Where, As the base dosage, ; is the instantaneous flow rate of raw water, ; is the empirical coefficient, dimensionless; is the dynamic dosing compensation amount, ; 、 μ is the weight coefficient λ>0, μ>0, dimensionless, Focus on turbidity control, Focus on pH stability; Turbidity change ; is the turbidity reference value; for amount of change; It is the historical adjustment benefit factor, ranging from 0.8 to 1.2.

[0050] Concentration closed-loop control:

[0051] in: Output increment for this control cycle; is the proportional gain; (concentration deviation); is the sampling period; is the integration time constant; is the differential time constant; is the second-order difference of the deviation.

[0052] .

[0053] Among them, during the execution of the concentration closed loop, the parameters are shown in Table 2.

[0054] Table 2 Concentration closed-loop execution parameters

[0055] Among them, the control system dynamic parameter setting rules are shown in Table 3.

[0056] Table 3 Dynamic parameter setting rules for the control center unit

[0057] The second object of the present invention is to provide a method for using a lime coagulation and dosing device based on adaptive control, such as Figure 2 Shown, including: S100: The monitoring sensor unit collects and obtains water quality data in the clarifier 8 and sends the collected water quality data to the control center unit; S200: The control center unit performs data anomaly detection on the water quality data received from the monitoring sensor unit and determines whether to add lime based on the detection result; S300: If the test result is normal, the raw material supply unit transports the lime to the dissolving and mixing unit. The dissolving and mixing unit stirs the added lime. The control center unit controls the dosing execution unit to transport the stirred lime solution to the clarifier 8.

[0058] The specific steps include: S1: The monitoring sensor unit collects and obtains the water quality in the clarifier 8.

[0059] Specifically, the sensor in the monitoring sensor unit monitors the influent water quality of the clarifier tank 8 in real time.

[0060] Among them, the pH sensor 101 in the monitoring sensor unit adopts a glass electrode type The turbidity sensor 9 is based on the principle of 90° scattered light, with a range of 0-1000 NTU and a resolution of 0.1 NTU; the conductivity sensor 102 is used to indirectly reflect the ion concentration in water, with a range of ; Temperature sensor 103 uses a PT100 platinum resistor to compensate for the temperature drift of other sensors.

[0061] All sensor data are transmitted to the control center unit through communication, which uses sliding average filtering ( ) to eliminate transient noise and The turbidity data is weighted and fused (weight coefficient: pH 0.6, turbidity 0.4) to improve monitoring stability.

[0062] S2: The control center unit receives the data from the monitoring sensor unit, performs data anomaly detection, and determines whether to add lime based on the detection results.

[0063] If the test results are abnormal, the lime addition strategy will be implemented.

[0064] Specifically, the PLC controller 7 in the control center unit determines the amount of lime to be added based on the detected high-acid wastewater and low-turbidity raw water. ) Turn on the fast dosing mode ( ); Low turbidity raw water ( ) Turn on the fine adjustment mode (fine-tune the dosage every 5 minutes).

[0065] S3: If the test result is normal, calculate the current water quality parameters ( , turbidity) and the matching degree of each scene in the model library.

[0066] Specifically, if the test results are normal, calculate the current water quality parameters ( , turbidity) with the matching degree of each scenario in the model library; select the strategy with the highest matching degree as the benchmark and superimpose the feedback calibration amount; output 4-20mA signal to control the actuator in the PLC controller 7.

[0067] S4: The PLC controller 7 actuator uses the flow meter feedback signal to compare the actual water output every 30 minutes / turbidity and target value; if the deviation continues to exceed the limit, press The step size adjusts the dosing coefficient in the model library.

[0068] S5: Execute the addition coefficient, add lime, and the dissolving and mixing unit stirs the added lime, and transports the stirred lime solution to the clarification tank 8, and performs effluent detection to detect water quality data.

[0069] This method achieves real-time optimization of lime dosage through multi-parameter feedback, database search and closed-loop control of precise lime dosage, significantly improving coagulation treatment efficiency and reducing operating costs.

[0070] The present invention will be further explained with reference to specific embodiments.

[0071] Example Treatment object: High turbidity wastewater from steel production, containing suspended matter and heavy metal ions.

[0072] Core problem: Frequent failures in the lime system (pipeline blockage, concentration fluctuations) lead to high-density clarifier effluent and turbidity fluctuations ( Fluctuation of 8~14, turbidity exceeds ).

[0073] S1: The monitoring sensor unit collects and obtains water quality data in the clarifier 8, and determines whether the water quality data in the clarifier 8 is abnormal.

[0074] Monitoring sensor unit through Sensor 101 and turbidity sensor 9 collect steel wastewater data in real time, Sensor 101 and turbidity sensor 9 collect data synchronously every 10 seconds, and conductivity and temperature are used to compensate for drift; all data are filtered by sliding average ( ) After eliminating the noise, the pH and turbidity are weighted and fused to generate a stable monitoring value and transmit it to the control center unit. If or It is marked as abnormal water quality.

[0075] S2: The control center unit receives the data from the monitoring sensor unit, performs data anomaly detection, and determines whether to add lime based on the detection results.

[0076] After receiving the data, the PLC controller 7 of the control center unit performs a graded response to abnormal water quality: when When the fast dosing mode is started, ; when When the fine adjustment mode is enabled, the dosage is fine-tuned every 5 minutes based on the PID algorithm; at the same time, if the heavy metal concentration inverted by conductivity exceeds the standard ( ), then superimpose ion compensation ( ).

[0077] In non-abnormal situations, the model matching process is directly transferred to S3.

[0078] S3: If the test result is normal, calculate the current water quality parameters ( , turbidity) and the matching degree of each scene in the model library.

[0079] When the water quality is normal, the control center calculates the current / The matching degree between turbidity and steel wastewater scenario model library is considered. The strategy with matching degree >95% is selected as the baseline dosage. The feedback calibration value of the first 30 minutes is superimposed. The dosage is adjusted by ±2% for every ±0.1pH deviation. Finally, a 4-20mA signal is output to drive the actuator, and the lime addition flow is controlled in real time through closed-loop control through the flowmeter.

[0080] S4: The PLC controller 7 actuator compares the actual outlet pH / turbidity with the target value every 30 minutes through the flow meter feedback signal; if it deviates from the target value continuously ( ), the model library coefficients are dynamically modified with a step size of ±5%.

[0081] The preferred ranges of the parameters in this embodiment are shown in Table 4, and the commissioning and acceptance criteria are shown in Table 5.

[0082] Table 4 Parameter optimization range

[0083] Table 5 Preferred range of commissioning and acceptance standards

[0084] Key performance assurance: concentration control accuracy: 0.3% (set value 15.0%); lime dosing error: ≤±1.0% (measured at dosing pump outlet 12).

[0085] Response delay: water quality mutation response ≤8s; concentration adjustment ≤45s (reaching 95% of the new steady state); anti-blocking effectiveness: pipeline accumulation rate <0.3mm / month (traditional system >1.5mm), cleaning cycle ≥6 months.

[0086] Therefore, this lime coagulation and dosing device is suitable for industrial wastewater treatment (such as electroplating, metallurgy, and chemical wastewater), municipal sewage treatment, and drinking water purification. By dynamically adjusting the lime dosage, the coagulation effect is optimized, addressing the low treatment efficiency and reagent waste caused by water quality fluctuations in traditional methods. This embodiment effectively addresses water quality fluctuations by replacing a fixed algorithm with a real-time matching model library. The lime dosage is reduced by over 20%, and sludge production is reduced by 15%. Closed-loop control from monitoring to execution eliminates the need for human intervention. Updates to the model library can support expanded applications such as heavy metal removal and phosphorus precipitation.

[0087] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of the present teachings should be determined not with reference to the foregoing description, but rather with reference to the preceding claims, along with the full scope of equivalents to which such claims are entitled. For the purpose of completeness, all articles and references, including the disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from the preceding claims is not a disclaimer of such subject matter, nor should it be interpreted that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

[0088] The above content is a further detailed description of the present invention, and it cannot be considered that the specific implementation methods of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection of the present invention determined by the submitted claims.

Claims

1. A lime coagulation and dosing device based on adaptive control, characterized in that: It includes raw material supply unit, dissolving and mixing unit, dosing execution unit, monitoring sensor unit and control center unit; The raw material supply unit is connected to one side of the dissolving and mixing unit, and the other side of the dissolving and mixing unit is connected to the clarification tank (8); The dosing execution unit is arranged on the pipeline between the dissolving and mixing unit and the clarification tank (8); The control center unit is connected to the dosing execution unit and the monitoring sensor unit; The monitoring sensor unit is arranged in the clarification tank (8).

2. The lime coagulation and dosing device based on adaptive control according to claim 1 is characterized in that: The monitoring sensor unit includes a turbidity sensor (9), a pH sensor (101), a conductivity sensor (102) and a temperature sensor (103); The turbidity sensor (9) is arranged in the clarifier (8); The pH sensor (101), the conductivity sensor (102), and the temperature sensor (103) are arranged on the water inlet pipe (10) of the clarifier (8).

3. The lime coagulation and dosing device based on adaptive control according to claim 1 is characterized in that: The dosing execution unit includes a variable frequency metering pump group; The variable frequency metering pump group includes a frequency converter (11), a dosing pump (12) and a flow meter (13); The dosing pump (12) is arranged on the pipeline between the dissolving and mixing unit and the clarification tank (8); The frequency converter (11) is arranged between the dosing pump (12) and the control central unit; The flow meter (13) is arranged between the dosing pump (12) and the clarifier (8).

4. The lime coagulation and dosing device based on adaptive control according to claim 1, characterized in that: The dissolving and mixing unit comprises a dissolving tank (4), a ripening tank (5) and a medicine storage tank (6); The inlet of the dissolving box (4) is connected to the raw material supply unit; The outlet of the dissolving tank (4) is connected to the inlet of the ripening tank (5); The outlet of the maturation tank (5) is connected to the clarification tank (8).

5. The lime coagulation and dosing device based on adaptive control according to claim 4, characterized in that: The dissolving tank (4) is provided with a first agitator (141).

6. The lime coagulation and dosing device based on adaptive control according to claim 4, characterized in that: A second stirrer (142) is provided in the maturation box (5).

7. The lime coagulation and dosing device based on adaptive control according to claim 4, characterized in that: A third agitator (143) is provided in the medicine storage box (6).

8. The lime coagulation and dosing device based on adaptive control according to claim 1, characterized in that: The control center unit includes a PLC controller (7); The PLC controller (7) comprises a system monitoring unit, a screening unit and an execution unit.

9. The lime coagulation and dosing device based on adaptive control according to claim 1, characterized in that: Also includes an anti-clogging unit; The anti-clogging unit is arranged between the dosing execution unit and the clarification tank (8).

10. A method for using a lime coagulation and dosing device based on adaptive control, characterized in that: include: S100: The monitoring sensor unit collects and obtains water quality data in the clarifier (8), and sends the collected water quality data to the control center unit; S200: The control center unit performs data anomaly detection on the water quality data received from the monitoring sensor unit and determines whether to add lime based on the detection result; S300: The test result is normal. The raw material supply unit transports the lime to the dissolving and mixing unit. The dissolving and mixing unit stirs the added lime. The control center unit controls the dosing execution unit to transport the stirred lime solution to the clarification tank (8).

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