Paper pulp wastewater treatment device for paper bag production line

Abstract

The invention discloses a paper pulp wastewater treatment device for a paper bag production line, and relates to the technical field of paper pulp wastewater treatment. Through mutual cooperation of the first barrier plate and the second barrier plate, preliminary filtration of wastewater is facilitated, and then through mutual cooperation of the stirring tank and the precipitation tank, the filtered wastewater is subjected to reaction and precipitation treatment; the analysis unit is used for carrying out real data analysis on the impurity concentration in the wastewater, accurately mastering the impurity content, ensuring the wastewater treatment to reach the standard and avoiding the influence on the subsequent flow due to improper impurity treatment; the water quality data is analyzed by the analysis unit, the corresponding agent adding amount is accurately calculated, the treatment effect is timely adjusted and stabilized, and the treatment effect fluctuation caused by unreasonable agent adding is prevented; the stirring time required by uniform mixing is obtained by analyzing the stirring rotating speed, the wastewater density and the wastewater viscosity data through the analysis unit, so that the wastewater and the treatment agent are fully mixed, and the reaction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pulp wastewater treatment, and particularly to a pulp wastewater treatment device for a paper bag production line. Background Art

[0002] During the production process of paper bags, a large amount of wastewater is generated in pulp preparation. This wastewater contains pollutants such as high-concentration suspended solids, organic matter, lignin, and chemical additives. However, in the use process of an existing pulp wastewater treatment device for a paper bag production line, it is difficult to filter and treat the wastewater discharged industrially. Paper bag production enterprises are facing great environmental protection pressure. Secondly, traditional simple wastewater treatment methods such as sedimentation and filtration can no longer meet the current requirements for the depth of wastewater treatment and water quality compliance; During the impurity filtration process, there is a lack of real data on impurity concentration, and the treatment process cannot be adjusted according to the actual situation. For example, it is impossible to determine whether a certain treatment step needs to be strengthened or the treatment time needs to be adjusted; the dosing amount is not analyzed in real time. When the wastewater quality changes, the treatment system cannot be adjusted in time, easily resulting in fluctuations in the treatment effect; the appropriate stirring time cannot be determined, which may cause insufficient mixing of the wastewater and the treatment agent. A too long stirring time will waste a large amount of energy, increase the operating cost, and affect the service life of the equipment; Therefore, it is necessary to solve and handle the above technical problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a pulp wastewater treatment device for a paper bag production line.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: A pulp wastewater treatment device for a paper bag production line includes a wastewater treatment tank. On both inner walls on two sides at one end of the wastewater treatment tank, limiting plates are vertically and fixedly connected. A blocking mechanism is vertically slidably clamped and installed between the limiting plates inside the wastewater treatment tank. A wastewater collection tank is provided at the front end of the blocking mechanism. A cross-shaped fixing frame is horizontally and fixedly connected between the upper part at the rear side of the blocking mechanism and the wastewater treatment tank. A stirring mechanism is installed in the cross-shaped fixing frame, and an overflow mechanism is installed at the rear side of the stirring mechanism; A control module is further provided inside the controller of the servo motor. The control component includes a collection unit, an analysis unit, and an execution unit; The collection unit detects the impurity concentration data of the wastewater, detects the water quality data, stirring speed, wastewater density, and wastewater viscosity data, and transmits the detected data to the analysis module; An analysis unit analyzes the impurity concentration data to obtain the true data of the impurity concentration, determines the filtration effect based on the true data of the impurity concentration, and if the filtration effect is poor, generates a filtration abnormal signal and transmits the filtration abnormal signal to the execution unit; analyzes the water quality data to obtain the dosage data of the wastewater treatment agent; analyzes the stirring speed, wastewater density and wastewater viscosity data to obtain the stirring time data required for uniform mixing. An execution unit receives the signals transmitted by the analysis unit and performs corresponding operations.

[0005] Preferably, the blocking mechanism includes a first partition board between the limiting boards. Square through holes are equidistantly arranged on the first partition board, and a second partition board is vertically and slidably clamped and installed at the rear side of the first partition board. Circular filtering holes are equidistantly arranged on the second partition board.

[0006] Preferably, water suction pipes are installed at both ends of the rear side of the second partition board. The other ends of the water suction pipes are fixedly connected to one end of a first water pump. The first water pump is installed on the extended fixing plates on both sides of the wastewater treatment tank, and the other end of the first water pump is fixedly connected to a drain pipe. The drain pipe is installed in the stirring tank of the wastewater treatment tank.

[0007] Preferably, the stirring mechanism includes a servo motor installed at the upper end of a cross-shaped fixing frame. The driving end of the servo motor penetrates through the middle of the cross-shaped fixing frame and is fixedly connected to the upper end of a rotating column. A driving gear is fixedly connected to the outer side of the rotating column at the lower end of the cross-shaped fixing frame, and a fixing disk is fixedly connected to the lower end of the cross-shaped fixing frame. Inner teeth are equidistantly fixedly connected to the inner side of the fixing disk, and a driven gear meshing with the teeth is installed on the inner side of the fixing disk. The driven gear meshes with the driving gear on the inner side, and a connecting rod is fixedly connected downward from the middle of the driven gear.

[0008] Preferably, stirring plates are fixedly connected to the outer side of the connecting rod, and stirring rods are equidistantly fixedly connected to both sides of the rotating column between the connecting rods.

[0009] Preferably, the overflow mechanism includes a sedimentation tank opened inside the wastewater treatment tank. A second water pump is installed at the upper end of the inner wall of the sedimentation tank. A water extraction pipe is fixedly connected to one side of the second water pump. The other end of the water extraction pipe is installed inside the stirring tank, and a water supply pipe of the second water pump is installed in the sedimentation tank. An overflow plate is fixedly installed in the middle of the sedimentation tank, and a collection tank is opened on the other side of the overflow plate.

[0010] Preferably, the steps for the analysis unit to analyze the true data of the impurity concentration in the wastewater are as follows: S1: Inside the bottom of the treatment device, two scalings are performed inward according to a set distance based on the shape of the bottom of the pool, respectively obtaining a scaled border one and a scaled border two. The perimeters of the scaled border one and the scaled border two are used for Equal division, and a water quality detection point is set at the equal division point; the impurity concentration data in the wastewater at the water quality detection point is detected by a turbidity sensor and the outliers in the multiple impurity concentration data detected at the same time are removed; S2: Calculate the mean value of the multiple impurity concentration data detected at the same time and the standard deviation , and set the data fluctuation range based on the calculated mean value and standard deviation data. The fluctuation range is . The data outside the fluctuation range is marked as abnormal data. After removing the abnormal data, calculate the mean value of the remaining impurity concentration data, and use the mean value of the remaining impurity concentration data as the impurity concentration data detected at this moment; S3: Calculate the average value of the impurity concentration data detected at each water quality detection point at the same moment, and record the calculated average value as the impurity concentration data in the wastewater detected at this moment. Perform the operation of removing extreme values and calculating the mean value on the impurity concentration data at the corresponding moments calculated at multiple collection moments, and the obtained value is the true data of the impurity concentration in the wastewater ; S4: The total volume of the wastewater is , then the total weight of the impurities in the wastewater . After filtering the impurities in the wastewater through the first baffle and the second baffle, detect the true data of the impurity concentration in the wastewater again . The total weight of the impurities in the filtered wastewater , then the impurity filtration amount in the filtration stage ; Compare the calculated impurity filtration amount data with the mean value of the impurity filtration amount data of the same-source wastewater in the previous batches . If the preset difference threshold , it is determined that the filtration effect of the first baffle and the second baffle on the wastewater is stable; otherwise, a filtration abnormal signal is generated and the filtration abnormal signal is transmitted to the execution unit.

[0011] Preferably, the analysis steps for the time required for the analysis module to perform uniform mixing are as follows: K1: Detect the flow state of the wastewater during the stirring process. The Reynolds number is used to judge the flow state of the fluid , is the diameter data of the stirring rotation circle is the rotation speed data of the stirring rod and the stirring plate is the density data of the wastewater is the viscosity data of the wastewater; when is small, the fluid is in a laminar flow state. At this time, the time required to achieve stirring and mixing , is the preset coefficient; when When it is larger, the fluid enters a turbulent state, and the time required to achieve stirring and mixing is , is the preset coefficient; K2: Constant stirring speed. The time from the start of stirring to the critical point where the fluid state changes from laminar flow to turbulent flow is ,like , it is determined that the fluid has already transformed into a turbulent state before reaching the stirring time corresponding to the laminar state. At this time, the total stirring time ;like , it is determined that the fluid has undergone a complete laminar stirring stage, and then entered the turbulent stage to continue stirring to achieve uniform mixing. At this time, the total stirring time ; After the stirring time reaches the calculated total stirring time, a stirring stop signal is generated and the stirring stop signal is transmitted to the execution unit.

[0012] Preferably, the execution unit performs the following steps: M1: After receiving the abnormal filtering signal, the buzzer module inside the controller is controlled to sound a buzzer alarm to inform the staff that there is an abnormality in the filtering effect at the first baffle plate and the second baffle plate, and to conduct a timely inspection; M2: After receiving the stirring stop signal, the controller stops the power supply to the servo motor, causing the servo motor to stop rotating naturally.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The first baffle plate cooperates with the second baffle plate to facilitate preliminary filtration of wastewater, and can prevent impurities from clogging the pipes and pumps of the treatment equipment, thereby improving the efficiency of the pulp wastewater treatment device, and thus achieving the function of stable pulp wastewater treatment. The stirring tank and the sedimentation tank cooperate with each other to facilitate the reaction and sedimentation of the filtered wastewater, thereby improving the convenience of pulp wastewater treatment, and thus achieving the function of better water quality after pulp wastewater treatment, and finally solving the problem of difficult wastewater treatment and difficult water quality to meet standards; 2. Through the analysis unit, the real data analysis of the impurity concentration in the wastewater is carried out to accurately grasp the impurity content, ensure that the wastewater treatment meets the standards, and avoid the impact of improper impurity treatment on the subsequent process; through the analysis of water quality data by the analysis unit, the corresponding amount of reagent addition is accurately calculated, and timely adjusted to stabilize the treatment effect, and prevent fluctuations in the treatment effect due to unreasonable reagent addition; through the analysis of the stirring speed, wastewater density and wastewater viscosity data by the analysis unit, the stirring time required for uniform mixing is obtained to ensure that the wastewater and the treatment agent are fully mixed, improve the reaction efficiency, and avoid problems such as wasting energy due to too long stirring time and excessive wear on equipment, thereby extending the service life of the equipment and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall three-dimensional structure proposed by the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure when viewed from above proposed by the present invention; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the other side proposed by the present invention; Figure 4 A schematic diagram of a top-view cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the overall three-dimensional structure of the stirring mechanism proposed by the present invention; Figure 6 This is a system flow chart proposed by the present invention.

[0015] Serial numbers in the figure: 1. Wastewater treatment box; 2. Wastewater collecting tank; 3. First baffle plate; 4. Second baffle plate; 5. Suction pipe; 6. First water pump; 7. Drain pipe; 8. Cross fixing frame; 9. Servo motor; 10. Second water pump; 11. Sedimentation tank; 12. Overflow plate; 13. Driving gear; 14. Driven gear; 15. Fixed plate; 16. Rotating column; 17. Stirring plate; 18. Stirring rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Example: See Figures 1-6, A pulp wastewater treatment device for a paper bag production line in the present invention includes a wastewater treatment tank 1, and vertical limiting plates are vertically and fixedly connected to the inner walls on both sides at one end of the wastewater treatment tank 1. A blocking mechanism is vertically slidably clamped and installed between the limiting plates inside the wastewater treatment tank 1. A wastewater collection tank 2 is provided at the front end of the blocking mechanism, and a cross-shaped fixing frame 8 is horizontally and fixedly connected between the upper part of the wastewater treatment tank 1 at the rear side of the blocking mechanism. A stirring mechanism is installed in the cross-shaped fixing frame 8, and an overflow mechanism is installed at the rear side of the stirring mechanism. Through the wastewater treatment tank 1 and the wastewater collection tank 2, it is convenient to collect the pulp wastewater to be treated; the blocking mechanism includes a first blocking plate 3 between the limiting plates. Square through holes are equidistantly arranged on the first blocking plate 3, and a second blocking plate 4 is vertically slidably clamped and installed at the rear side of the first blocking plate 3. Circular filtering holes are equidistantly arranged on the second blocking plate 4. Through the first blocking plate 3 and the second blocking plate 4, it is convenient to initially intercept larger impurities in the pulp wastewater; suction pipes 5 are installed at both ends of the rear side of the second blocking plate 4, and the other ends of the suction pipes 5 are fixedly connected to one end of a first water pump 6. The first water pump 6 is installed on the extended fixing plates on both sides of the wastewater treatment tank 1, and the other end of the first water pump 6 is fixedly connected to a drain pipe 7. The drain pipe 7 is installed in the stirring tank in the wastewater treatment tank 1. Through the suction pipes 5 and the drain pipe 7, it is convenient to transport the pulp wastewater that has been initially intercepted.

[0018] In the present invention, the stirring mechanism includes a servo motor 9 installed at the upper end of the cross-shaped fixing frame 8. The driving end of the servo motor 9 penetrates through the middle of the cross-shaped fixing frame 8 and is fixedly connected to the upper end of a rotating column 16. An active gear 13 is fixedly connected to the outside of the rotating column 16 at the lower end of the cross-shaped fixing frame 8, and a fixed disk 15 is fixedly connected to the lower end of the cross-shaped fixing frame 8. Internal teeth are equidistantly fixedly connected to the inside of the fixed disk 15, and a driven gear 14 meshing with the teeth is installed inside the fixed disk 15. The driven gear 14 meshes with the active gear 13 inside, and a connecting rod is fixedly connected downward from the middle of the driven gear 14. Through the mutual cooperation of the active gear 13 and the driven gear 14, it is convenient to ensure the consistency of the treatment effect on the wastewater; stirring plates 17 are fixedly connected to the outside of the connecting rod, and stirring rods 18 are equidistantly fixedly connected to both sides of the rotating column 16 between the connecting rods. Through the stirring plates 17 and the stirring rods 18, it is convenient to mix the wastewater in the stirring tank evenly; the overflow mechanism includes a sedimentation tank 11 opened inside the wastewater treatment tank 1. A second water pump 10 is installed at the upper end of the inner wall of the sedimentation tank 11. A water extraction pipe is fixedly connected to one side of the second water pump 10, and the other end of the water extraction pipe is installed inside the stirring tank. A water supply pipe on one side of the second water pump 10 is installed in the sedimentation tank 11. An overflow plate 12 is fixedly installed in the middle of the sedimentation tank 11, and a collection tank is provided on the other side of the overflow plate 12. Through the sedimentation tank 11 and the overflow plate 12, it is convenient to precipitate the sludge at the bottom of the tank and overflow and discharge the supernatant.

[0019] A control module is also provided inside the controller of the servo motor 9. The control component includes an acquisition unit, an analysis unit, and an execution unit; Inside the bottom of the processing device's pool, based on the shape of the pool bottom, two scalings are performed inward at a set distance, respectively obtaining scaling border one and scaling border two. Using the perimeters of scaling border one and scaling border two, scaling border one and scaling border two are equally divided, and water quality detection points are set at the positions of the equal division points; through a turbidity sensor, the impurity concentration data of the wastewater at the positions of the water quality detection points is detected, and outliers are removed from the multiple impurity concentration data detected at the same time; Calculate the mean of the multiple impurity concentration data detected at the same time and the standard deviation , and based on the calculated mean and standard deviation data, a data fluctuation range is set. The fluctuation range is . Data outside the fluctuation range is marked as abnormal data. After removing the abnormal data, calculate the mean of the remaining impurity concentration data, and use the mean of the remaining impurity concentration data as the impurity concentration data detected at that moment; Calculate the average of the impurity concentration data detected at each water quality detection point at the same time, and use the calculated average as the impurity concentration data of the wastewater detected at that moment. Perform the operation of removing extreme values and calculating the mean on the corresponding wastewater impurity concentration data calculated at multiple collection moments to obtain the true data of the impurity concentration in the wastewater ; The total volume of the wastewater is , then the total weight of the impurities in the wastewater . After filtering the impurities in the wastewater through the first baffle 3 and the second baffle 4, the true data of the impurity concentration in the wastewater is detected again . The total weight of the impurities in the filtered wastewater , then the impurity filtration amount in the filtration stage ; Compare the calculated impurity filtration amount data with the mean of the impurity filtration amount data of the same-source wastewater in the previous batches . If the preset difference threshold , it is determined that the filtration effect of the first baffle 3 and the second baffle 4 on the wastewater is stable; otherwise, a filtration abnormal signal is generated and the filtration abnormal signal is transmitted to the execution unit.

[0020] Detect the chemical oxygen demand of the wastewater discharged into the stirring tank to obtain the chemical oxygen demand data of the wastewater before treatment . After adding the wastewater treatment agent, the chemical oxygen demand data for the wastewater to meet the discharge standard . The volume flow rate of the wastewater is . The stoichiometric coefficient of the reaction between the wastewater treatment agent and the pollutants in the wastewater is . The active ingredient content of the wastewater treatment agent is Then, to make the wastewater meet the discharge standard, the dosage of the wastewater treatment agent required .

[0021] After adding the wastewater treatment agent, the flow state of the wastewater during the stirring process is detected. The Reynolds number is used to judge the flow state of the fluid, , is the diameter data of the stirring rotation circle, is the rotational speed data of the stirring rod 18 and the stirring plate 17, is the density data of the wastewater, is the viscosity data of the wastewater; when is relatively small, the fluid is in a laminar flow state, and the time required to reach the stirring and mixing is , where is a preset coefficient; when is relatively large, the fluid enters a turbulent flow state, and the time required to reach the stirring and mixing is , where is a preset coefficient; Keep the stirring speed constant. From the start of stirring to the critical point where the fluid state changes from laminar flow to turbulent flow, the elapsed time is . If , it is determined that the fluid has changed to a turbulent flow state before the stirring time corresponding to the laminar flow state is reached. At this time, the total stirring time ; if

[0022] Working principle: When the present invention is in use, first, through the wastewater treatment tank 1 and the wastewater collection tank 2, it is convenient to discharge the wastewater to be treated into the treatment device. Then, through the first partition plate 3 and the second partition plate 4, it is convenient to conduct preliminary interception treatment on the larger impurities in the discharged wastewater. Then, through the first water pump 6 and the water suction pipe 5, it is convenient to discharge the intercepted wastewater into the stirring tank through the drain pipe 7. Then, through the servo motor 9 on the cross fixing frame 8, the driving gear 13 and the driven gear 14 in the fixed disk 15 rotate, so that the stirring rod 18 and the stirring plate 17 on the rotating column 16 stir the wastewater in the stirring tank to make the wastewater mix evenly. Then, through the second water pump 10, the wastewater in the stirring tank is discharged into the sedimentation tank 11. Finally, through the overflow plate 12, the sludge settles at the bottom of the tank, and the clear liquid overflows from the top and is discharged.

[0023] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A pulp wastewater treatment device for a paper bag production line, comprising a wastewater treatment tank (1), and limiting plates are vertically and fixedly connected to the inner walls on both sides of one end of the wastewater treatment tank (1), and it is characterized in that: A barrier mechanism is vertically and slidably clamped and installed between the inner limiting plates of the wastewater treatment tank (1). A wastewater collection tank (2) is provided at the front end of the barrier mechanism, and a cross-shaped fixing frame (8) is horizontally and fixedly connected between the upper rear side of the barrier mechanism and the wastewater treatment tank (1). A stirring mechanism is installed in the cross-shaped fixing frame (8), and an overflow mechanism is installed behind the stirring mechanism; A control module is also provided inside the controller of the servo motor (9). The control component includes an acquisition unit, an analysis unit, and an execution unit; The acquisition unit detects the impurity concentration data of the wastewater, detects the water quality data, stirring speed, wastewater density, and wastewater viscosity data, and transmits the detected data to the analysis module; The analysis unit analyzes the impurity concentration data to obtain the real data of the impurity concentration, determines the filtration effect based on the real data of the impurity concentration. If the filtration effect is poor, a filtration abnormal signal is generated and transmitted to the execution unit; analyzes the water quality data to obtain the dosage data of the wastewater treatment agent; analyzes the stirring speed, wastewater density, and wastewater viscosity data to obtain the stirring time data required for uniform mixing; The execution unit receives the signals transmitted by the analysis unit and performs corresponding operations.

2. The pulp wastewater treatment device for a paper bag production line according to claim 1, characterized in that: The barrier mechanism includes a first barrier plate (3) between the limiting plates. Square through holes are equidistantly provided on the first barrier plate (3), and a second barrier plate (4) is vertically and slidably clamped and installed behind the first barrier plate (3). Circular filter holes are equidistantly provided on the second barrier plate (4).

3. The pulp wastewater treatment device for a paper bag production line according to claim 2, wherein: Water suction pipes (5) are installed at both rear ends of the second barrier plate (4). The other ends of the water suction pipes (5) are fixedly connected to one end of a first water pump (6). The first water pump (6) is installed on the extended fixing plates on both sides of the wastewater treatment tank (1), and the other end of the first water pump (6) is fixedly connected to a drain pipe (7). The drain pipe (7) is installed in the stirring tank of the wastewater treatment tank (1).

4. The pulp wastewater treatment device for a paper bag production line according to claim 1, wherein: The stirring mechanism includes a servo motor (9) installed at the upper end of the cross-shaped fixing frame (8). The driving end of the servo motor (9) penetrates through the middle of the cross-shaped fixing frame (8) and is fixedly connected to the upper end of a rotating column (16). An active gear (13) is fixedly connected to the outside of the rotating column (16) at the lower end of the cross-shaped fixing frame (8), and a fixed disk (15) is fixedly connected to the lower end of the cross-shaped fixing frame (8). Inner teeth are equidistantly fixedly connected to the inside of the fixed disk (15), and a driven gear (14) meshing with the teeth is installed inside the fixed disk (15). The driven gear (14) meshes with the active gear (13) inside, and a connecting rod is fixedly connected downward from the middle of the driven gear (14).

5. The pulp wastewater treatment device for a paper bag production line according to claim 4, wherein: Stirring plates (17) are fixedly connected to the outside of the connecting rod, and stirring rods (18) are equidistantly fixedly connected to both sides of the rotating column (16) between the connecting rods.

6. The pulp wastewater treatment device for a paper bag production line according to claim 1, characterized in that: The overflow mechanism includes a sedimentation tank (11) formed inside the wastewater treatment tank (1). At the upper end of the inner wall of the sedimentation tank (11), a second water pump (10) is installed. One side of the second water pump (10) is fixedly connected with a water suction pipe, and the other end of the water suction pipe is installed inside the stirring tank. And a water supply pipe on one side of the second water pump (10) is installed in the sedimentation tank (11). In the middle of the sedimentation tank (11), an overflow plate (12) is fixedly installed, and a collection tank is formed on the other side of the overflow plate (12).

7. A pulp wastewater treatment device for a paper bag production line according to claim 1, characterized in that: The steps for the analysis unit to perform real - data analysis of the impurity concentration in the wastewater are as follows: S1: Inside the bottom of the pool of the processing device, perform two scalings inward based on the shape of the pool bottom at a set distance to obtain a first scaled border and a second scaled border respectively. Divide the first scaled border and the second scaled border according to their perimeters, and set water quality detection points at the positions of the equal division points; use a turbidity sensor to detect the impurity concentration data in the wastewater at the positions of the water quality detection points and remove the outliers from the multiple impurity concentration data detected at the same time; ​ S2: Calculate the mean of multiple impurity concentration data detected at the same time and the standard deviation , establish the data fluctuation range based on the calculated mean and standard deviation data, and the fluctuation range is . Mark the data outside the fluctuation range as abnormal data. After removing the abnormal data, calculate the mean of the remaining impurity concentration data, and use the mean of the remaining impurity concentration data as the impurity concentration data detected at this moment; S3: Calculate the average value of the impurity concentration data detected at each water quality detection point at the same moment. Denote the calculated average value as the impurity concentration data in the wastewater detected at that moment. Perform the operation of removing extreme values and calculating the mean on the impurity concentration data in the wastewater at the corresponding moments calculated for multiple collection moments. The obtained value is the true data of the impurity concentration in the wastewater ; S4: The total volume of the wastewater is , then the total weight of the impurities in the wastewater . After filtering the impurities in the wastewater through the first baffle (3) and the second baffle (4), the true data of the impurity concentration in the wastewater is detected again. The total weight of the impurities in the filtered wastewater is , then the impurity filtration amount in the filtration stage is ; Compare the calculated impurity filtration amount data with the average value of the impurity filtration amount data of the wastewater from the same source in the previous batches. If the preset difference threshold is , it is determined that the filtration effect of the first baffle (3) and the second baffle (4) on the wastewater is stable; otherwise, a filtration abnormal signal is generated and the filtration abnormal signal is transmitted to the execution unit.

8. The pulp wastewater treatment device for a paper bag production line according to claim 7, characterized in that: The steps for the analysis module to analyze the time required for uniform mixing are as follows: K1: Detect the flow state of the wastewater during the stirring process. The Reynolds number is used to judge the flow state of the fluid, , is the diameter data of the stirring rotation circle, is the rotational speed data of the stirring rod (18) and the stirring plate (17), is the density data of the wastewater, is the viscosity data of the wastewater; when is small, the fluid is in a laminar flow state, and the time required to reach the stirring and mixing is is a preset coefficient; when is large, the fluid enters a turbulent flow state, and the time required to reach the stirring and mixing is is a preset coefficient; K2: The constant stirring speed. The time elapsed from the start of stirring to the critical point where the fluid state changes from laminar flow to turbulent flow is . If , it is determined that the fluid has changed to the turbulent state before reaching the stirring time corresponding to the laminar state. At this time, the total stirring time is . If , it is determined that the fluid has experienced a complete laminar stirring stage and then entered the turbulent stage to continue stirring until uniform mixing. At this time, the total stirring time is . After the stirring time reaches the calculated total stirring time, a stirring stop signal is generated and the stirring stop signal is transmitted to the execution unit.

9. The pulp wastewater treatment device for a paper bag production line according to claim 8, wherein: The steps for the execution unit to perform operations are as follows: M1: After receiving the filtration - anomaly signal, control the buzzer module inside the controller to give a buzzer warning, informing the staff that there is an anomaly in the filtration effect at the first baffle (3) and the second baffle (4), and check in time; M2: After receiving the stirring - stop signal, stop the power supply to the servo motor (9) through the controller, so that the servo motor (9) stops rotating naturally.

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