Online sludge filtration performance detection and dynamic dosing device

Abstract

The invention discloses an online sludge filtration performance detection and dynamic dosing device, and relates to the technical field of municipal sewage treatment and industrial wastewater treatment.The online sludge filtration performance detection and dynamic dosing device comprises a buffer adjusting cylinder and a tap water inlet pipe, a conveying pipe is arranged at the bottom of the buffer adjusting cylinder, and a dumping electromagnetic valve is installed on the front side of the conveying pipe; and a high-efficiency filter cylinder is mounted outside the lower end of the conveying pipe. According to the online sludge filtration performance detection and dynamic dosing device, accurate sampling and detection parameters are preset and matched with a photoelectric liquid level sensor and an infrared light transmittance sensor to realize real-time accurate acquisition of filtration time and clear liquid light transmittance, and meanwhile, dosing amount data are synchronously recorded; on the basis of curve fitting analysis of accumulation of 10 groups of effective data, a correlation model of the dosing amount and the filtering performance can be established, the optimal dosing amount interval can be accurately identified, the suitability of a dosing scheme and sludge properties is fundamentally guaranteed, and the problems that traditional dosing depends on experience and is poor in suitability are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal sewage treatment and industrial wastewater treatment, in particular to an online sludge filtration performance detection and dynamic dosing device. BACKGROUND

[0002] As a major energy consumer, sewage treatment plants need to reduce drug consumption and power consumption through technological innovation to reduce carbon emissions. Optimizing the dosing of the dewatering link is one of the most direct and effective ways to achieve this goal.

[0003] Currently, in the field of municipal sewage treatment and industrial wastewater treatment, sludge dewatering is the last key link, and its effect directly determines the final disposal cost and environmental compliance of sludge. However, the traditional dewatering process (such as using belt filter press, plate and frame filter press, centrifugal dewatering machine) has the following pain points: drug dosing relies on human experience, sludge properties fluctuate greatly, and there is a problem of excessive or insufficient dosing.

[0004] Therefore, in view of the above problems, the existing structure and deficiencies are improved, and an online sludge filtration performance detection and dynamic dosing device is provided. SUMMARY

[0005] The present application is made in view of the above problems, and aims to provide an online sludge filtration performance detection and dynamic dosing device to solve the problems raised in the background art To achieve the above-mentioned purpose, the present application provides the following technical scheme: an online sludge filtration performance detection and dynamic dosing device, comprising a buffer adjusting cylinder and a tap water inlet pipe, the bottom of the buffer adjusting cylinder is provided with a conveying pipe, and the front side of the conveying pipe is provided with a pouring electromagnetic valve, the lower end of the conveying pipe is externally provided with a high-efficiency filter cartridge, and the inside of the high-efficiency filter cartridge is obliquely provided with a multi-hole filter plate, one side of the high-efficiency filter cartridge is communicatively provided with a flushing pipe, and the end of the flushing pipe is provided with a backwashing electromagnetic valve, the tap water inlet pipe is provided at one end of the backwashing electromagnetic valve, the bottom of the high-efficiency filter cartridge is provided with a filter measuring bottle, and the outside of the filter measuring bottle is provided with an infrared light transmittance sensor, and the side of the high-efficiency filter cartridge away from the tap water inlet pipe is communicatively provided with a sludge discharge pipe.

[0006] Further, the bottom of the sludge discharge pipe is communicatively provided with a liquid discharge pipe, and the liquid discharge pipe is provided at one side of the bottom of the filter measuring bottle.

[0007] Further, one side of the end of the liquid discharge pipe is provided with a sludge discharge electromagnetic valve, and the bottom of the filter measuring bottle is provided with a base.

[0008] Further, one side of the outer surface of the base is provided with a photoelectric liquid level sensor, and the side of the outer surface of the base close to the photoelectric liquid level sensor is provided with a control module.

[0009] Further, the buffer adjusting cylinder is externally provided with a quick connector, and a sludge inlet electromagnetic valve is threadedly installed at one end of the quick connector.

[0010] Further, a flow adjusting valve is installed at one end of the sludge inlet electromagnetic valve, and a stainless steel pipe is arranged at one end of the flow adjusting valve, and a plunger type quantitative pump is installed at one end of the stainless steel pipe.

[0011] Further, an upper disc is arranged on the outer surface of the buffer adjusting cylinder, and the upper disc comprises a hydraulic rod and a lower disc, and the lower disc is installed at the bottom of the hydraulic rod.

[0012] Further, the height of the sludge discharge pipe is higher than that of the flushing pipe, and the sludge discharge pipe is located above the porous filter plate, the inclination of the porous filter plate is 5°, the pore size of the porous filter plate is 0.45 μm-1.2 μm, the control module comprises a signal linkage module, an installation protection module and a data fitting and dosing signal output module, and the output end of the signal linkage module is electrically connected with the installation protection module, and the output end of the installation protection module is electrically connected with the data fitting and dosing signal output module.

[0013] Further, the control module comprises the following steps when running: Step one, initialization and parameter loading: load the preset period / threshold parameters, the sampling period is 30 minutes / time, the single sampling amount is 100 ml, the sampling error threshold is ±2 ml, the clear liquid level judgment threshold of the filtration detection is 50 ml, the light transmittance qualified interval; the backwashing pressure is 0.2-0.4 MPa, the flushing time is 30-60 seconds, the data accumulation amount is 10 groups / round, and the dosing signal output rule is 4-20 mA / 0-10 V.

[0014] The on-off state of the sludge inlet electromagnetic valve, the pouring electromagnetic valve, the sludge discharge electromagnetic valve and the backwashing electromagnetic valve is detected in sequence, whether the signal feedback of the photoelectric liquid level sensor, the infrared light transmittance sensor, the flow sensor and the pressure sensor is normal, and whether the driving signal of the plunger type quantitative pump is matched, if the detection is abnormal, the hardware fault early warning is triggered immediately, the running is paused and the maintenance is prompted; Step two, sampling stage control: when the preset 30-minute sampling period is reached, the control module sends a sampling trigger signal to start the sampling process; Step three, filtration performance detection stage control: an opening signal is sent to the pouring electromagnetic valve, the sludge in the buffer adjusting cylinder is instantaneously poured into the high-efficiency filter cartridge through the conveying pipe, and then the pouring electromagnetic valve is closed; Step four, cleaning and backwashing stage control: for sludge / clear liquid discharge and high-pressure backwashing; Step five, data fitting and dosing model establishment: for data accumulation judgment, algorithm fitting and data protection; Step six, dynamic dosing control and data upload: the control module converts the optimal dosing dose into a 4-20 mA / 0-10 V analog signal driving signal through the signal linkage module, and sends it to the plunger type quantitative pump. The plunger type quantitative pump adjusts the dosing flow according to the signal to realize precise adaptation of the dosing dose. The control module monitors the dosing flow feedback in real time to ensure that the deviation from the set value is ≤±2%. The signal linkage module uploads the data of the filtration time, transmittance, specific resistance value, dosing parameters, backwashing parameters, etc. according to the factory MES / DCS system communication protocol, supports remote monitoring, and sends an audible and visual early warning signal to prompt the operator to intervene and handle if the detection data such as transmittance exceeds the qualified interval, the specific resistance value deviates from the target value too much, or the dosing flow abnormally triggers the early warning threshold. Abnormal data and time are recorded. Step seven, cycle operation: after completing a round of step one-step six process, the control module resets the timer and automatically enters the next 30-minute cycle period to continuously adapt to the changes in sludge properties. If a shutdown instruction is received from the MES / DCS system, the cleaning and backwashing steps of the current period are completed first, and then the operation is stopped to ensure that there is no sludge residue inside the device.

[0015] Further, the step two includes the following sub-steps: Flow and on-off control: send control signals to the flow regulating valve to accurately adjust the sludge flow rate to match the flow rate value of "100 ml single sampling amount", open the sludge inlet electromagnetic valve, and the sludge enters the buffer adjusting cylinder through the stainless steel pipe and quick connector. The sampling amount is monitored in real time by the flow sensor, and the sludge inlet electromagnetic valve is closed immediately when the sampling amount reaches 100 ml with an error within ±2 ml. If the error threshold is exceeded, the sampling amount abnormal early warning is triggered, and the sampling process is re-executed. Data recording: record the real-time dosing data of the current dosing device and store it in the buffer area of the signal linkage module; the step three includes the following sub-steps: Filtering monitoring and timing: Start the built-in timer, and the photoelectric liquid level sensor collects the liquid level data of the clear liquid in the filter measuring bottle in real time every 100 ms. When the liquid level reaches the 50 ml preset threshold, the control module stops the timer immediately, records the "filtration time when the clear liquid reaches 50 ml", and stores the core data. At the same time, the infrared transmittance sensor detects the transmittance of the clear liquid, and the sensor transmits the detection data to the control module. The control module compares the preset "transmittance qualified interval" to determine whether the transmittance meets the standard, and records the qualified state and specific value. Data integration: bind the "filtration time, transmittance, current dosing amount" three groups of data to form a single group of filtration performance detection data, and temporarily store it in the database of the data fitting and dosing signal output module; The step four includes the following sub-steps: Send an opening signal to the sludge discharge electromagnetic valve, and the sludge intercepted in the high-efficiency filter cartridge is discharged through the sludge discharge pipe, and the clear liquid in the filtration measuring bottle is synchronously discharged through the liquid discharge pipe, and the discharge time is preset to 20 seconds, and the sludge discharge electromagnetic valve is closed after completion.

[0016] High-pressure backwashing: The backwashing electromagnetic valve is opened, and tap water is introduced into the high-efficiency filter cartridge through the tap water inlet pipe and the flushing pipe; Real-time monitoring of the flushing water pressure, the water pressure is stabilized in the range of 0.2-0.4 MPa through the pressure regulating valve, and the flushing time is controlled to be 30-60 seconds, and in the flushing process, the water flow is used to flush the high-efficiency filter cartridge wall and the 5° inclined porous filter plate at high pressure, and the residual sludge is removed; the flushing waste liquid is discharged through the sludge discharge pipe and the liquid discharge pipe, and after reaching the preset flushing time, the backwashing electromagnetic valve is closed, the cleaning process is completed, and the control module records the pressure and time data of this backwashing, which is used for subsequent backwashing parameter optimization; The step five comprises the following sub-steps: Data accumulation determination: the data fitting and the dosing signal output module count the number of stored "dosing amount-filtering time-transmittance" effective data groups, if not 10 groups, return to step two, enter the next 30-minute sampling period, continue to accumulate data, if 10 groups, start curve fitting analysis; Algorithm fitting: call the built-in core algorithm, the filtering rate formula is specifically filtering rate formula , and the sludge specific resistance value formula r= , calculate the filtering rate and sludge specific resistance value corresponding to each group of data; Data protection: install a protection module to ensure the safety of data storage throughout the process, through the IP65 protection of the 304 stainless steel cabinet and the internal heat dissipation and layered tray design, avoid data loss or module failure caused by environmental factors.

[0017] Compared with the prior art, the present application has the following beneficial effects: through the preset accurate sampling and detection parameters, the photoelectric liquid level sensor and the infrared transmittance sensor are used to realize real-time and accurate collection of filtering time and clear liquid transmittance, and the dosing amount data is recorded at the same time; based on the curve fitting analysis of 10 groups of effective data accumulation, the correlation model of dosing amount and filtering performance can be established, the optimal dosing amount range can be accurately identified, the adaptability of the dosing scheme and the nature of the sludge can be fundamentally guaranteed, and the problem of poor adaptability of traditional dosing depending on experience is solved. High degree of automation and stable operation can greatly reduce operation and maintenance costs and avoid pollution risks. The device realizes full-process automatic control from sampling, detection, backwashing to sludge and liquid discharge, without frequent manual intervention. Through the design of 0.2-0.4MPa high-pressure backwashing and the IP65 protection level control module cabinet, residual sludge in the pipeline is effectively removed to prevent clogging and cross contamination. At the same time, it has waterproof, dustproof and corrosion-resistant ability to ensure stable operation in harsh conditions, which not only reduces the workload of manual operation and maintenance, but also prolongs the service life of the equipment. Strong dynamic adaptability and convenient intelligent management help to realize efficient cooperation and remote control of sludge treatment. The device continuously detects every 30 minutes, can track the change of sludge properties in real time and dynamically adjust the dosage of the additive. Through the signal linkage module, it is connected with the factory MES / DCS system, supports remote monitoring and data uploading of detection data and dosing parameters, and has an abnormal warning function to facilitate timely intervention by operators. The overall realization of dynamic cooperation of sludge filtration performance detection and dosing adjustment improves the overall operation efficiency of the sludge treatment system and provides data support for intelligent management of the factory. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the drawings or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the drawings, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0019] Figure 1 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device. Figure 2 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device. Figure 3 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device. Figure 4 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device. Figure 5 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device. Figure 6 It is a schematic diagram of the overall structure of the online sludge filtration performance detection and dynamic dosing device.

[0020] Explanation of reference numerals: 1, buffer adjusting cylinder; 2, flow regulating valve; 3, mud inlet electromagnetic valve; 4, stainless steel pipe; 5, plunger type quantitative pump; 6, quick connector; 7, conveying pipe; 8, pouring electromagnetic valve; 9, high-efficiency filter cylinder; 10, filtering and metering bottle; 11, control module; 12, mud discharge pipe; 13, liquid discharge pipe; 14, mud discharge electromagnetic valve; 15, photoelectric liquid level sensor; 16, upper disc; 17, hydraulic rod; 18, lower disc; 19, infrared light transmittance sensor; 20, flushing pipe; 21, backwashing electromagnetic valve; 22, tap water inlet pipe; 23, porous filter plate; 24, signal linkage module; 25, installation protection module; 26, data fitting and dosing signal output module; 27, base.

[0021] The purposes, functional features and advantages of the drawings will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be described and explained in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] Obviously, the following description is only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without creative labor. In addition, it can be understood that although the efforts made in this development process can be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacture or production changes based on the technical content disclosed in the present application are only routine technical means and should not be understood as insufficient disclosure of the present application.

[0024] If not specifically stated, "including" and "comprising" mentioned in the present application means open or closed. For example, "including" and "comprising" can mean that other components not listed can also be included or contained, or only the listed components can be included or contained.

[0025] If not specifically stated, in the present application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true or exists and B is false or does not exist; A is false or does not exist and B is true or exists; or A and B are both true or exist.

[0026] Explanation of terms: asFigures 1 to 5As shown, an online sludge filtration performance detection and dynamic dosing device, including buffer adjusting cylinder 1, flow regulating valve 2, mud inlet solenoid valve 3, stainless steel pipe 4, plunger type quantitative pump 5, quick connector 6, conveying pipe 7, pouring solenoid valve 8, high efficiency filter cartridge 9, filter measuring bottle 10, control module 11, mud discharge pipe 12, liquid discharge pipe 13, mud discharge solenoid valve 14, photoelectric liquid level sensor 15, upper disc 16, hydraulic rod 17, lower disc 18, infrared light transmittance sensor 19, flushing pipe 20, backwashing solenoid valve 21, tap water inlet pipe 22, porous filter plate 23 and signal linkage module 24, installation protection module 25, data fitting and dosing signal output module 26, base 27, the bottom of buffer adjusting cylinder 1 is provided with conveying pipe 7, and the front side of conveying pipe 7 is provided with pouring solenoid valve 8, the outer surface of buffer adjusting cylinder 1 is provided with upper disc 16, and upper disc 16 comprises hydraulic rod 17 and lower disc 18, the bottom of hydraulic rod 17 is provided with lower disc 18, the height of buffer adjusting cylinder 1 can be adjusted by upper disc 16, hydraulic rod 17 and lower disc 18 on the outer surface of buffer adjusting cylinder 1, so that the buffer adjusting cylinder 1 and the high efficiency filter cartridge 9 can be conveniently maintained and repaired, one side of the outer surface of buffer adjusting cylinder 1 is provided with quick connector 6, one end of quick connector 6 is provided with mud inlet solenoid valve 3 through screw thread, one end of mud inlet solenoid valve 3 is provided with flow regulating valve 2, one end of flow regulating valve 2 is provided with stainless steel pipe 4, one end of stainless steel pipe 4 is provided with plunger type quantitative pump 5, the lower end of conveying pipe 7 is externally provided with high efficiency filter cartridge 9, the inside of high efficiency filter cartridge 9 is provided with porous filter plate 23 in an inclined manner, the inclination of porous filter plate 23 is 5°, the pore diameter of porous filter plate 23 is 0.45-1.2 μm, one side of high efficiency filter cartridge 9 is communicated with flushing pipe 20, one end of flushing pipe 20 is provided with backwashing solenoid valve 21, tap water inlet pipe 22 is arranged at one end of backwashing solenoid valve 21, the bottom of high efficiency filter cartridge 9 is provided with filter measuring bottle 10, the outer side of filter measuring bottle 10 is provided with infrared light transmittance sensor 19, one side of high efficiency filter cartridge 9 away from tap water inlet pipe 22 is communicated with mud discharge pipe 12, the height of mud discharge pipe 12 is higher than that of flushing pipe 20, and mud discharge pipe 12 is located above porous filter plate 23, the plunger type quantitative pump 5 is started, the sludge enters the sampling channel through stainless steel pipe 4 from the front segment conditioning pipeline of filter press, the flow regulating valve 2 accurately controls the flow rate, the mud inlet solenoid valve 3 controls the on-off of the channel, and the sampling amount is stably controlled to 100 ml each time, after sampling is completed, the sludge is conveyed to the buffer adjusting cylinder 1 through the pipeline connected with quick connector 6 for temporary storage, the control module 11 synchronously records the real-time dosing amount data of the current dosing device at this stage, the control module 11 sends a signal to the pouring solenoid valve 8 to open, the sludge in the buffer adjusting cylinder 1 is instantaneously poured into the high efficiency filter cartridge 9 through the conveying pipe 7, the sludge passes through the 5° inclined porous filter plate 23 with a pore diameter of 0.45-1.2 μm under the action of gravity, and the sludge is filtered.2um and filter membrane, the filtered clear liquid flows into the lower filtration measuring flask 10, the photoelectric liquid level sensor 15 installed on the base 27 monitors the liquid level in the filtration measuring flask 10 in real time, when the liquid level reaches the preset threshold, immediately feedback signal to the control module 11, the control module 11 synchronously stops the built-in timer, records the filtration time when the clear liquid reaches the set liquid level; at the same time, the infrared light transmittance sensor 19 detects the light transmittance of the clear liquid, and transmits the data to the control module 11, and the filtration time and the light transmittance together constitute the core evaluation index of the sludge filtration performance.

[0027] As shown in Figure 1 and Figure 2 , the bottom of the sludge discharge pipe 12 is communicated with the liquid discharge pipe 13, and the liquid discharge pipe 13 is arranged on one side of the bottom of the filtration measuring flask 10. The end of the liquid discharge pipe 13 is provided with a sludge electromagnetic valve 14. The bottom of the filtration measuring flask 10 is provided with a base 27. The outer surface of the base 27 is provided with a photoelectric liquid level sensor 15. The outer surface of the base 27 is provided with a control module 11 near the photoelectric liquid level sensor 15. The control module 11 sends a cleaning signal to drive the sludge electromagnetic valve 14 to open. The sludge trapped in the high-efficiency filter cartridge 9 is discharged through the sludge discharge pipe 12. The clear liquid in the filtration measuring flask 10 is discharged through the liquid discharge pipe 13 at the same time. Then the backwashing electromagnetic valve 21 is opened. The tap water enters the high-efficiency filter cartridge 9 through the tap water inlet pipe 22 and the flushing pipe 20. The water pressure is stabilized at 0.2-0.4MPa. The cylinder wall and the porous filter plate 23 are high-pressure flushed for 30-60 seconds to remove residual sludge and prevent pipeline blockage and cross contamination. The flushing waste liquid is finally discharged through the sludge discharge pipe 12 and the liquid discharge pipe 13.

[0028] As shown in Figure 6 , the control module 11 includes a signal linkage module 24, an installation protection module 25 and a data fitting and dosing signal output module 26. The output end of the signal linkage module 24 is electrically connected with the installation protection module 25. The output end of the installation protection module 25 is electrically connected with the data fitting and dosing signal output module 26. The control module 11 sends the optimized control signal to the automatic dosing device through the signal linkage module 24 to adjust the dosing amount and realize the precise adaptation of the dosing scheme. At the same time, the control module 11 can upload the detection data, dosing parameters and the like to the factory MES / DCS system through the signal linkage module 24 for remote monitoring. If the detection data is abnormal, the control module 11 triggers an early warning immediately to prompt the operator to intervene and handle. After completing a round of detection and dosing adjustment, the device automatically enters the next 30-minute cycle period to continuously and dynamically adapt to the change of sludge properties. The control module 11 includes the following steps when it is running: Step one, initialization and parameter loading: load the preset cycle / threshold parameters, sample cycle 30 minutes / time, single sampling volume 100 ml, sampling error threshold ±2 ml, filtered detection of the clear liquid level determination threshold 50 ml, transmittance qualified interval; backwash pressure 0.2-0.4 MPa, flushing duration 30-60 seconds, data accumulation amount 10 groups / round, dosing signal output rule 4-20 mA / 0-10 V; In turn, detect the on-off state of the mud inlet electromagnetic valve 3, the pouring electromagnetic valve 8, the mud discharge electromagnetic valve 14, and the backwashing electromagnetic valve 21, whether the signal feedback of the photoelectric liquid level sensor 15, the infrared transmittance sensor 19, the flow sensor, and the pressure sensor is normal, and whether the driving signal of the plunger type quantitative pump 5 is matched. If the detection is abnormal, immediately trigger the hardware fault early warning, pause the operation and prompt maintenance; Step two, sample stage control: when the preset 30-minute sampling cycle is reached, the control module 11 sends a sampling trigger signal to start the sampling process. Step two includes the following sub-steps: Flow and on-off control: send a control signal to the flow regulating valve 2 to accurately adjust the mud inlet flow rate to match the flow rate value of "100 ml single sampling volume". Open the mud inlet electromagnetic valve 3. The sludge enters the buffer adjusting cylinder 1 through the stainless steel pipe 4 and the quick connector 6. The sampling volume is monitored in real time by the flow sensor. When it reaches 100 ml with an error within ±2 ml, the mud inlet electromagnetic valve 3 is immediately closed, and the sampling is completed. If the error threshold is exceeded, trigger the sampling volume abnormal early warning and re-execute the sampling process. Data recording: record the real-time dosing amount data of the current dosing device simultaneously and store it in the buffer area of the signal linkage module 24; Step three, filter performance detection stage control: send an opening signal to the pouring electromagnetic valve 8. The sludge in the buffer adjusting cylinder 1 is instantaneously poured into the high-efficiency filter cartridge 9 through the delivery pipe 7. Then the pouring electromagnetic valve 8 is closed. Step three includes the following sub-steps: Filter monitoring and timing: Start the built-in timer. The photoelectric liquid level sensor 15 collects the clear liquid level data in the filter measuring bottle 10 in real time and feeds back to the control module 11 once every 100 ms. When the liquid level reaches the preset threshold of 50 ml, the control module 11 immediately stops the timer, records the "filtering time when the clear liquid reaches 50 ml", and stores the core data. Simultaneously, trigger the infrared transmittance sensor 19 to detect the clear liquid transmittance. The sensor transmits the detection data to the control module. The control module 11 compares the preset "transmittance qualified interval" to determine whether the transmittance meets the standard and records the qualified state and specific value. Data integration: bind the "filtering time, transmittance, and current dosing amount" three groups of data to form a single group of filter performance detection data and temporarily store it in the database of the data fitting and dosing signal output module 26; Step four, cleaning and backwashing stage control: for sludge / clear liquid discharge and high-pressure backwashing, step four includes the following sub-steps: Send an open signal to the sludge discharge electromagnetic valve 14, and the sludge trapped in the high-efficiency filter cartridge 9 is discharged through the sludge discharge pipe 12, and the clear liquid in the filter measuring bottle 10 is synchronously discharged through the liquid discharge pipe 13, the discharge time is preset to 20 seconds, and after completion, the sludge discharge electromagnetic valve 14 is closed; High-pressure backwashing: Open the backwashing electromagnetic valve 21, and tap water is introduced into the high-efficiency filter cartridge 9 through the tap water inlet pipe 22 and the flushing pipe 20; Real-time monitoring of flushing water pressure, the water pressure is stabilized in the range of 0.2-0.4 MPa through the pressure regulating valve, the flushing time is controlled to be 30-60 seconds, and during the flushing process, the water flow performs high-pressure flushing on the high-efficiency filter cartridge 9 and the 5° inclined porous filter plate 23, and removes the residual sludge; the flushing waste liquid is discharged through the sludge discharge pipe 12 and the liquid discharge pipe 13, after reaching the preset flushing time, the backwashing electromagnetic valve 21 is closed, the cleaning process is completed, and the control module 11 records the pressure and time data of this backwashing, which is used for subsequent backwashing parameter optimization; Step five, data fitting and dosing model establishment: for data accumulation determination, algorithm fitting and data protection, step five includes the following sub-steps: Data accumulation determination: the data fitting and dosing signal output module 26 counts the number of effective data groups of “dosing amount-filtering time-transmittance” stored, if it is less than 10 groups, return to step two, enter the next 30-minute sampling period, continue to accumulate data, if it reaches 10 groups, start curve fitting analysis; Algorithm fitting: call the built-in core algorithm, the filtering rate formula is specific to the filtering rate formula , and the sludge specific resistance value formula r= , calculate the filtering rate and sludge specific resistance value corresponding to each group of data; Data protection: install the protection module 25 to ensure the safety of data storage throughout the process, through the IP65 protection of the 304 stainless steel cabinet, internal heat dissipation and layered tray design, avoid environmental factors causing data loss or module failure; Step six, dynamic dosing control and data upload: the control module 11 converts the optimal dosing dose into a 4-20 mA / 0-10 V analog signal driving signal through the signal linkage module 24 and sends it to the plunger type quantitative pump 5. The plunger type quantitative pump 5 adjusts the dosing flow according to the signal to realize precise adaptation of the dosing dose. The control module 11 monitors the dosing flow feedback in real time to ensure that the deviation from the set value is ≤±2%. The signal linkage module 24 uploads the data of the filtration time, transmittance, specific resistance value, dosing parameters, backwashing parameters, etc. according to the factory MES / DCS system communication protocol to support remote monitoring. If the detection data such as the transmittance exceeds the qualified interval, the specific resistance value deviates from the target value too much, or the dosing flow abnormally triggers the early warning threshold, the control module 11 immediately sends an audible and visual early warning signal to prompt the operator to intervene and handle, and records the abnormal data and time. Step seven, cycle operation: after completing a round of step one-step six process, the control module 11 resets the timer and automatically enters the next 30-minute cycle period to continuously adapt to the changes in sludge properties. If a shutdown instruction is received from the MES / DCS system, the cleaning and backwashing steps of the current period are completed first, and then the operation is stopped to ensure that there is no sludge residue inside the device.

[0029] In summary, as Figures 1-6As shown, the online sludge filtration performance detection and dynamic dosing device, when in use, the PLC controller control module 11 sends a trigger signal according to a preset period, and the preset period parameters are sampling parameters: 30 minutes / time sampling period, 100ml single sampling volume, ±2ml error threshold; filtration detection parameters: 50ml clear liquid level determination threshold, transmittance qualified interval; backwashing parameters: 0.2-0.4MPa washing pressure, 30-60 seconds washing time; dosing optimization parameters: 10 groups / round data accumulation, analog output signal specification 4-20mA / 0-10V drive plunger type quantitative pump 5 starts, sludge enters the sampling channel from the stainless steel pipe 4 of the front section of the filter press, the flow regulating valve 2 accurately regulates the flow rate, and the sludge inlet electromagnetic valve 3 controls the on-off of the channel, so as to ensure that the sampling volume is stable at 100ml each time. After sampling is completed, the sludge is transported to the buffer adjusting cylinder 1 through the pipeline connected by the quick connector 6 for temporary storage, and the control module 11 records the real-time dosing amount data of the current dosing device at this stage. The control module 11 sends a signal to the pouring electromagnetic valve 8 to open, and the sludge in the buffer adjusting cylinder 1 is instantaneously poured into the high-efficiency filter cartridge 9 through the conveying pipe 7. The sludge is filtered through the 5° inclined porous filter plate 23 with a pore size of 0.45μm-1.2μm and the filter membrane under the action of gravity, and the filtered clear liquid flows into the lower filtration measuring bottle 10. In this process, the photoelectric liquid level sensor 15 installed on the base 27 monitors the clear liquid level in the filtration measuring bottle 10 in real time. When the liquid level reaches the preset threshold, a signal is immediately fed back to the control module 11, and the control module 11 synchronously stops the built-in timer to record the filtration time when the clear liquid reaches the set liquid level. At the same time, the infrared transmittance sensor 19 detects the clear liquid transmittance and transmits the data to the control module 11. The filtration time and transmittance together constitute the core evaluation index of sludge filtration performance. In addition, the upper disc 16, hydraulic rod 17 and lower disc 18 on the outer surface of the buffer adjusting cylinder 1 can adjust the height of the buffer adjusting cylinder 1, which is convenient for maintenance and repair of the buffer adjusting cylinder 1 and the high-efficiency filter cartridge 9; After the single filtration detection is completed, the control module 11 sends a cleaning signal to drive the sludge discharge electromagnetic valve 14 to open, and the sludge trapped in the high-efficiency filter cartridge 9 is discharged through the sludge discharge pipe 12, and the clear liquid in the filtration measuring bottle 10 is synchronously discharged through the liquid discharge pipe 13, and then the backwashing electromagnetic valve 21 is opened, tap water enters the high-efficiency filter cartridge 9 through the tap water inlet pipe 22 and the flushing pipe 20, the water pressure is stabilized at 0.2-0.4 MPa, and the cartridge wall and the porous filter plate 23 are subjected to high-pressure flushing for 30-60 seconds to remove residual sludge and prevent pipeline blockage and cross contamination, and the flushing waste liquid is finally discharged through the sludge discharge pipe 12 and the liquid discharge pipe 13; the data fitting and dosing signal output module 26 built in the control module 11 stores the three groups of data of “dosing amount-filtration time-transmittance” collected, and when 10 groups of effective data are accumulated, the module performs curve fitting analysis through the built-in algorithm to establish a correlation model of dosing amount and filtration performance, and accurately identify the optimal dosing amount range under the current sludge properties, and in this process, the signal linkage module 24 of the control module 11 ensures the stability of data transmission, and the installation protection module 25 is the cabinet of the control module 11, which is made of 304 stainless steel, has a protection level of IP65, has waterproof, dustproof and corrosion-resistant functions, and is provided with layered trays and cooling fans to facilitate the stable use of the control module 11. After the data fitting is completed, the control module 11 sends the optimized control signal to the automatic dosing device through the signal linkage module 24 to adjust the dosing amount and realize precise adaptation of the dosing scheme, and at the same time, the control module 11 can upload the detection data, dosing parameters and the like to the factory MES / DCS system through the signal linkage module 24 for remote monitoring; if the detection data is abnormal, the control module 11 immediately triggers an early warning to prompt the operator to intervene and handle, and after completing a round of detection and dosing adjustment, the device automatically enters the next 30-minute cycle period to continuously and dynamically adapt to the change of sludge properties.

[0030] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and embodiments having the same technical idea and playing the same role and effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications of the embodiments, combination of part of the components in the embodiments to construct other ways can also be included in the scope of the present application.

Claims

1. An online sludge filtration performance testing and dynamic dosing device, comprising a buffer regulating cylinder (1) and a tap water inlet pipe (22), characterized in that: The bottom of the buffer regulating cylinder (1) is provided with a conveying pipe (7), and a tilting solenoid valve (8) is installed on the front side of the conveying pipe (7). A high-efficiency filter cylinder (9) is installed on the lower end of the conveying pipe (7), and a porous filter plate (23) is inclinedly arranged inside the high-efficiency filter cylinder (9). A flushing pipe (20) is connected to one side of the high-efficiency filter cylinder (9), and a backwash solenoid valve (21) is installed at the end of the flushing pipe (20). The tap water inlet pipe (22) is located at one end of the backwash solenoid valve (21). A filter metering bottle (10) is installed at the bottom of the high-efficiency filter cylinder (9), and an infrared transmittance sensor (19) is installed on the outside of the filter metering bottle (10). A sludge discharge pipe (12) is connected to the side of the high-efficiency filter cylinder (9) away from the tap water inlet pipe (22).

2. The online sludge filtration performance testing and dynamic dosing device according to claim 1, characterized in that: The bottom of the sludge discharge pipe (12) is connected to a drain pipe (13), and the drain pipe (13) is located on one side of the bottom of the filter metering bottle (10).

3. The online sludge filtration performance testing and dynamic dosing device according to claim 2, characterized in that: A sludge discharge solenoid valve (14) is provided on one side of the end of the drain pipe (13), and a base (27) is installed at the bottom of the filter metering bottle (10).

4. The online sludge filtration performance testing and dynamic dosing device according to claim 3, characterized in that: A photoelectric liquid level sensor (15) is provided on one side of the outer surface of the base (27), and a control module (11) is installed on the side of the outer surface of the base (27) close to the photoelectric liquid level sensor (15).

5. The online sludge filtration performance testing and dynamic dosing device according to claim 1, characterized in that: The buffer regulating cylinder (1) is provided with a quick-connect connector (6) on one side of its exterior, and a mud inlet solenoid valve (3) is threaded onto one end of the quick-connect connector (6).

6. The online sludge filtration performance testing and dynamic dosing device according to claim 5, characterized in that: One end of the sludge inlet solenoid valve (3) is equipped with a flow regulating valve (2), and one end of the flow regulating valve (2) is provided with a stainless steel pipe (4), and one end of the stainless steel pipe (4) is equipped with a plunger-type metering pump (5).

7. The online sludge filtration performance testing and dynamic dosing device according to claim 1, characterized in that: The outer surface of the buffer regulating cylinder (1) is provided with an upper plate (16), and the upper plate (16) includes a hydraulic rod (17) and a lower plate (18), with the lower plate (18) installed at the bottom of the hydraulic rod (17).

8. The online sludge filtration performance testing and dynamic dosing device according to claim 4, characterized in that: The height of the sludge discharge pipe (12) is higher than the height of the flushing pipe (20), and the sludge discharge pipe (12) is located above the porous filter plate (23). The inclination of the porous filter plate (23) is 5°, and the pore diameter of the porous filter plate (23) is 0.45μm-1.2μm. The control module (11) includes a signal linkage module (24), an installation protection module (25), and a data fitting and dosing signal output module (26). The output end of the signal linkage module (24) is electrically connected to the installation protection module (25), and the output end of the installation protection module (25) is electrically connected to the data fitting and dosing signal output module (26).

9. The online sludge filtration performance testing and dynamic dosing device according to claim 8, characterized in that: The control module (11) includes the following steps during operation: Step 1, Initialization and parameter loading: Load preset cycle / threshold parameters, sampling cycle 30 minutes / time, single sampling volume 100ml, sampling error threshold ±2ml, clear liquid level judgment threshold for filtration detection 50ml, transmittance qualified range; backwash pressure 0.2-0.4MPa, rinsing time 30-60 seconds, data accumulation 10 sets / round, dosing signal output 4-20mA / 0-10V; sequentially check the on / off status of sludge inlet solenoid valve (3), tilting solenoid valve (8), sludge discharge solenoid valve (14), backwash solenoid valve (21), whether the signal feedback of photoelectric liquid level sensor (15), infrared transmittance sensor (19), flow sensor, and pressure sensor is normal, and whether the drive signal of plunger quantitative pump (5) is matched. If abnormality is detected, immediately trigger hardware fault warning, suspend operation and prompt maintenance. Step 2, Sampling Phase Control: When the preset 30-minute sampling cycle is reached, the control module (11) sends a sampling trigger signal to start the sampling process; Step 3, Filtration performance testing stage control: Send an opening signal to the tilting solenoid valve (8), and the sludge in the buffer regulating cylinder (1) is instantly tilted into the high-efficiency filter cartridge (9) through the conveying pipe (7), and then the tilting solenoid valve (8) is closed. Step 4, Cleaning and Backwashing Stage Control: Used for sludge / clean liquid discharge and high-pressure backwashing; Step 5, Data Fitting and Dosing Model Establishment: Used for data accumulation and judgment, algorithm fitting, and data protection; Step 6, Dynamic Dosing Control and Data Upload: The control module (11) converts the optimal dosing dose into an analog drive signal of 4-20mA / 0-10V through the signal linkage module (24) and sends it to the plunger metering pump (5). The plunger metering pump (5) adjusts the dosing flow rate according to the signal to achieve accurate dosing dose matching. The control module (11) monitors the dosing flow rate feedback in real time to ensure that the deviation from the set value is ≤±2%. The signal linkage module (24) uploads the data such as the filtration time, transmittance, specific resistance, dosing parameters, and backwashing parameters of this test according to the factory MES / DCS system communication protocol to support remote monitoring. If the test data, such as transmittance exceeding the qualified range, specific resistance deviating too much from the target value, or dosing flow rate abnormally triggering the warning threshold, the control module (11) immediately sends an audible and visual warning signal to prompt the operator to intervene and handle the situation, and records the abnormal data and time. Step 7, Cyclic Operation: After completing one round of Step 1-Step 6, the control module (11) resets the timer and automatically enters the next 30-minute cycle, continuously and dynamically adapting to changes in sludge properties. If a shutdown command is received from the MES / DCS system, the cleaning and backwashing steps of the current cycle are completed first, and then the operation is stopped to ensure that there is no sludge residue inside the device.

10. The online sludge filtration performance testing and dynamic dosing device according to claim 9, characterized in that: Step two includes the following sub-steps: Flow and on / off control: Send a control signal to the flow regulating valve (2) to precisely adjust the sludge inlet flow rate to match the flow rate value of "100ml single sampling volume", open the sludge inlet solenoid valve (3), and the sludge enters the buffer regulating cylinder (1) through the stainless steel pipe (4) and quick connector (6). The sampling volume is monitored in real time by the flow sensor. When it reaches 100ml and the error is within ±2ml, the sludge inlet solenoid valve (3) is immediately closed to complete the sampling. If the error threshold is exceeded, an abnormal sampling volume warning is triggered, and the sampling process is re-executed. Data recording: Synchronously record the real-time dosage data of the current dosing device and store it in the buffer area of ​​the signal linkage module (24); Step three includes the following sub-steps: Filtration monitoring and timing: The built-in timer is started, and the photoelectric liquid level sensor (15) collects the liquid level data of the clear liquid in the filter metering bottle (10) in real time and feeds back to the control module (11) every 100ms. When the liquid level reaches the preset threshold of 50ml, the control module (11) immediately stops the timer, records the "filtration time when the clear liquid reaches 50ml", and stores the core data. Simultaneously, the infrared transmittance sensor (19) is triggered to detect the transmittance of the clear liquid. The sensor transmits the detection data to the control module. The control module (11) compares the preset "transmittance qualified range", determines whether the transmittance meets the standard, and records the qualified status and specific value. Data integration: The three sets of data, namely "filtration time, transmittance and current dosage", are bound together to form a single set of filtration performance test data, which is then temporarily stored in the database of the data fitting and dosing signal output module (26). Step four includes the following sub-steps: Send an opening signal to the sludge discharge solenoid valve (14), and the sludge trapped in the high-efficiency filter cartridge (9) is discharged through the sludge discharge pipe (12). The clear liquid in the filter metering bottle (10) is discharged synchronously through the liquid discharge pipe (13). The discharge time is preset to 20 seconds. After completion, the sludge discharge solenoid valve (14) is closed. High-pressure backwashing: Open the backwash solenoid valve (21), and tap water is introduced into the high-efficiency filter cartridge (9) through the tap water inlet pipe (22) and the flushing pipe (20); monitor the flushing water pressure in real time, and stabilize the water pressure in the range of 0.2-0.4MPa through the pressure regulating valve. The flushing time is controlled to be 30-60 seconds. During the flushing process, the water flow performs high-pressure flushing on the wall of the high-efficiency filter cartridge (9) and the 5° inclined porous filter plate (23) to remove residual sludge; the flushing waste liquid is discharged through the sludge discharge pipe (12) and the liquid discharge pipe (13). After the preset flushing time is reached, close the backwash solenoid valve (21) to complete the cleaning process. The control module (11) records the pressure and duration data of this backwash for subsequent backwashing parameter optimization. Step five includes the following sub-steps: Data accumulation judgment: Data fitting and dosing signal output module (26) counts the number of valid data sets of "dosing amount-filtration time-transmittance" that have been stored. If there are less than 10 sets, return to step two and enter the next 30-minute sampling cycle to continue accumulating data. If there are 10 sets, start curve fitting analysis. Algorithm fitting: The built-in core algorithm is invoked; the specific filtering rate formula is the filtering rate formula. The formula for sludge specific resistance is r = Calculate the filtration rate and sludge specific resistance for each set of data; Data protection: Install protection modules (25) to ensure data storage security throughout the process. Through the IP65 protection of the 304 stainless steel cabinet and internal heat dissipation and layered tray design, data loss or module failure caused by environmental factors is avoided.

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