WO2022168965A1 - 汚泥処理設備運転支援ナビゲーションシステム、汚泥処理設備運転支援方法 - Google Patents
汚泥処理設備運転支援ナビゲーションシステム、汚泥処理設備運転支援方法 Download PDFInfo
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- WO2022168965A1 WO2022168965A1 PCT/JP2022/004567 JP2022004567W WO2022168965A1 WO 2022168965 A1 WO2022168965 A1 WO 2022168965A1 JP 2022004567 W JP2022004567 W JP 2022004567W WO 2022168965 A1 WO2022168965 A1 WO 2022168965A1
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- Prior art keywords
- sludge
- treatment facility
- sludge treatment
- navigation system
- operation support
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- 239000010802 sludge Substances 0.000 title claims abstract description 634
- 238000000034 method Methods 0.000 title claims description 220
- 238000005189 flocculation Methods 0.000 claims abstract description 84
- 230000016615 flocculation Effects 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 135
- 238000012545 processing Methods 0.000 claims description 105
- 238000003860 storage Methods 0.000 claims description 70
- 238000004891 communication Methods 0.000 claims description 33
- 230000018044 dehydration Effects 0.000 claims description 33
- 238000006297 dehydration reaction Methods 0.000 claims description 33
- 238000003384 imaging method Methods 0.000 claims description 31
- 239000010865 sewage Substances 0.000 claims description 28
- 229920000642 polymer Polymers 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 18
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
Definitions
- the present invention relates to a sewage sludge treatment facility in a sewage treatment plant, and in particular to a navigation system and an operation support method that support the operation management work of sludge flocculation facilities and dehydration facilities.
- a pump that supplies sludge containing moisture to be removed, a centrifugal thin film dryer that expands the sludge into a thin film and removes the contained moisture by centrifugal force, and drying dried by this centrifugal thin film dryer
- a dry sludge collection container for collecting sludge an infrared moisture content meter that measures the moisture content by irradiating infrared rays on the dried sludge, and a control device that controls the rotation speed of the centrifugal thin film dryer based on the output of this infrared moisture content meter.
- Patent Document 1 A sludge drying device equipped with such an apparatus has been proposed (Patent Document 1).
- the amount of sludge generated at sewage treatment plants is enormous, and the burden of sludge disposal is increasing, making it necessary to improve the efficiency of sludge treatment.
- Sewage treatment is generally followed by sludge concentration, thickened sludge storage, sludge flocculation, sludge dewatering, dehydrated sludge storage and treatment processes.
- sludge dewatering process which separates the sludge to reduce the moisture content of the sludge, and before the sludge dewatering process, a flocculating agent is added to flocculate the turbidity in the sewage to form flocs that become aggregated particles, suitable for dewatering.
- the process of flocculating sludge is a process that poses many problems in improving the efficiency of sludge treatment.
- Patent Literature 1 does not specifically disclose about managing aggregation.
- an object of the present invention is to display information for proper operation management of both the main sludge dehydration process and coagulation process related to sludge treatment in a sewage treatment facility in a sewage treatment plant as an example.
- sludge treatment facility operation support navigation system as a control technology to support the operation of sludge treatment equipment to improve the efficiency of sludge treatment, making it possible for even inexperienced workers to properly operate the equipment
- An object of the present invention is to provide a sludge treatment facility operation support method.
- the sludge treatment facility operation support navigation system includes a processor, storage resources, and a display device.
- the storage resources include the desired flocculated floc state in the flocculation tank of the sludge treatment facility, and the desired sludge moisture content of the dehydrated sludge discharged from the sludge dehydrator of the sludge treatment facility. , are stored as data.
- the processor by executing the operation content display program, acquires (1) the state of flocculation during operation, which is the state of flocculation during operation of the sludge treatment facility.
- the sludge treatment facility operation support method uses a computer.
- This sludge treatment facility operation support method includes (1) acquiring an operating floc state, which is a flocculation floc state during operation of the sludge treatment facility. (2) Acquiring the sludge moisture content during operation, which is the moisture content of the dehydrated sludge during operation of the sludge treatment facility.
- the present invention in particular, regarding equipment for the sludge dehydration process and the flocculation process in a sludge treatment plant, information is displayed for appropriate operation management based on data obtained by digitizing the experience values possessed by skilled workers in sludge treatment. Therefore, even an inexperienced worker can appropriately operate the equipment, and it is possible to realize operation support and control of the sludge treatment equipment for improving the efficiency of sludge treatment.
- the cost of the chemicals used can be reduced by optimizing the injection amount of the high-molecular-weight coagulant with a high unit price. As a result, it is possible to reduce the cost of sludge disposal.
- the dehydration pressure of the sludge dehydrator can be adjusted appropriately to adjust the water content of the dehydrated sludge discharged from the sludge dehydrator to obtain dehydrated sludge with desired properties.
- it is suitable for transportation and transportation after discharge (that is, it is possible to facilitate transportation and transportation after discharge), and it is possible to reduce the cost of sludge disposal.
- FIG. 1 is a configuration diagram of a sewage sludge treatment facility operation support navigation system according to the first embodiment.
- the block diagram of the sewage sludge treatment equipment operation assistance navigation system which concerns on 2nd Embodiment.
- FIG. 12 is an algorithm flow showing an example of use of a sewage sludge treatment facility operation support navigation system using an image analysis method for a measured aggregated floc image according to the ninth embodiment
- FIG. 20 is an algorithm flow showing an example of a method of obtaining a regression line from infrared reflectance and predicting the water content using the regression line in the sewage sludge treatment facility operation support navigation system according to the tenth embodiment
- movement assistance navigation system which concerns on 11th Embodiment.
- FIG. 20 is an algorithm flow showing an example of a method of obtaining a regression line from reflected infrared light and predicting the water content using the regression line in the sewage sludge treatment facility operation support navigation system according to the fifteenth embodiment;
- FIG. 20 The figure which shows an example of the menu screen of the display screen of a sewage sludge treatment facility operation assistance navigation system.
- the figure which shows an example of the screen which concerns on the status confirmation of the display screen of a sewage-sludge-treatment-equipment operation assistance navigation system The figure which shows an example of the screen which concerns on the operation instruction of the display screen of a sewage sludge treatment plant operation assistance navigation system.
- FIG. 1 is a configuration diagram of a sewage sludge treatment facility operation support navigation system.
- the sewage sludge treatment equipment operation support navigation system 100 is a sewage sludge treatment plant in which sewage sludge treatment equipment is installed as a flow of a sewage sludge treatment process. It is installed to realize operation support and control of sludge treatment equipment to improve efficiency.
- the flocculating tank 101 is a tank used to add a flocculating agent to flocculate turbidity in sewage to form flocculated flocs that become aggregated particles.
- the aggregation tank 101 is provided with a stirring device, and the inside of the aggregation tank 101 is stirred by the stirring device.
- the sludge dehydrator includes a sludge dehydrator dewatering unit 102 and a sludge dehydrator discharge unit 103.
- the sludge dehydrator dewatering section 102 constitutes a dewatering section of the sludge dehydrator, and dewaters the sludge.
- the sludge dehydrator dehydrator 102 can be, for example, a belt press dehydrator, a screw press dehydrator, or a centrifugal dehydrator.
- the sludge dehydrator discharge section 103 constitutes the discharge section of the sludge dehydrator, and the sludge dehydrated by the sludge dehydrator dehydrator 102 is discharged to the outside of the sludge dehydrator through the sludge dehydrator discharge section 103. be done.
- the sludge storage tank 104 is a tank used to store sludge.
- the sewage sludge treatment facility operation support navigation system 100 includes an imaging device 105, an infrared measuring device 106, an imaging signal processing device 107, an infrared signal processing device 108, and a computer 109 (electronic computer). , and a flocculation tank/sludge dehydrator operation procedure display device 110 .
- the flocculant/sludge dewatering machine operating procedure display 110 may be any suitable display and is sometimes referred to herein as the display 110 .
- the imaging device 105 is a device having an image sensor, and converts a light (physical quantity) image of a target object into an electrical signal (sometimes referred to as an image signal) corresponding to the intensity of the light.
- the imaging device 105 is provided so as to be able to take an image of the sludge inside the flocculation tank 101 , and the imaging device 105 outputs an image signal acquired by imaging to the imaging signal processing device 107 .
- the imaging signal processing device 107 is a device that acquires image information by performing signal processing on the image signal input from the imaging device 105 , and outputs the acquired image information to the computer 109 .
- the infrared measurement device 106 is a device having an infrared sensor, and converts light in the infrared region (infrared rays) received from the target object into an electric signal (sometimes called a measurement signal).
- the infrared measurement device 106 is appropriately provided so as to measure the dewatered sludge after the dehydration treatment by the sludge dehydrator dehydrator 102 (the sludge dehydrator discharge unit 103, the sludge dehydrator discharge unit 103 and the sludge storage tank 104
- a measurement signal acquired by the infrared measurement device 106 is output to the infrared signal processing device 108 .
- the infrared signal processing device 108 performs signal processing on the input measurement signal, acquires infrared reflectance information (infrared spectrum), and outputs the acquired infrared reflectance information to the computer 109. . By analyzing this infrared reflectance information, the moisture content of the dehydrated sludge can be obtained.
- the computer 109 includes a processor and storage resources.
- a processor is configured as an arithmetic unit.
- the storage resource can be any suitable storage device (eg, hard disk drive), and stores a plurality of data and suitable programs for processing the data. Programs stored in the storage resource are executed by the processor.
- the storage resource of the computer 109 stores the desired flocculation state, the desired sludge moisture content, and the equipment operation procedure group as data.
- the desired state of flocculated flocs is data indicating a good state of flocculated flocs in the flocculation tank 101 . That is, the desired aggregated floc state is, for example, data on the aggregated floc state that is considered preferable based on the knowledge of a skilled person (that is, the size and size of the floc that is considered preferable based on the knowledge of a skilled person data indicating the shape). In this sense, a good aggregated floc state can also be said to be a target (desired) aggregated floc state.
- the desired sludge moisture content is the good moisture content data of the dewatered sludge discharged from the sludge dehydrator.
- the desired sludge moisture content is, for example, moisture content data of dehydrated sludge that is considered preferable based on the knowledge possessed by a skilled person. In this sense, a good moisture content can also be said to be a target (desired) moisture content.
- the equipment operation procedure group brings the flocculated floc state in the flocculation tank 101 to a good flocculated floc state (that is, the desired flocculated floc state), and the water content of the dewatered sludge discharged from the sludge dehydrator to a good water content ( That is, the data includes the equipment operation procedure of the flocculation tank 101 and the sludge dehydrator for achieving the desired sludge water content. That is, the equipment operation procedure group includes a plurality of equipment operation procedures, and regarding the flocculation tank 101, includes an equipment operation procedure for making the flocculated floc larger than the current state and an equipment operation procedure for making the agglomerated floc smaller than the current state.
- An example of the equipment operation procedure for making the flocculated flocs larger than the current size is an operation procedure for injecting a flocculating agent into the flocculation tank 101 .
- one example of the equipment operating procedure for making the aggregated flocs smaller than the current size is an operating procedure for changing the rotation speed of the agitator to increase the rotation speed.
- the equipment operation procedure group includes equipment operation procedures for increasing the dehydration pressure to reduce the water content of the dewatered sludge, and decreasing the dehydration pressure to reduce the water content of the dewatered sludge. and equipment operating procedures for augmentation.
- One example of equipment operation procedures for reducing the water content of dehydrated sludge is to change the dehydration pressure of the sludge dehydrator by operating the pressure adjustment mechanism (e.g., valve) provided in the sludge dehydrator.
- An operation procedure for increasing the pressure can be mentioned.
- the dehydration pressure of the sludge dehydrator is changed by operating the pressure adjustment mechanism provided in the sludge dehydrator to reduce the dehydration pressure. There are operating procedures for
- the storage resource of the computer 109 stores an operation procedure display program used to display the equipment operation procedure of the flocculation tank 101 and the sludge dehydrator.
- an operation procedure display program used to display the equipment operation procedure of the flocculation tank 101 and the sludge dehydrator.
- a good flocculated floc state that is, the desired flocculated floc state
- a good water content of the dewatered sludge that is, the desired sludge water content
- the agglomerated floc state (operational floc state) and the water content of the dewatered sludge to be obtained as it stands (sludge water content during operation) are compared.
- the equipment operation procedure for bringing the acquired flocculated state and the water content of the dehydrated sludge to be acquired closer to the desired flocculated floc state and the desired sludge water content is displayed on the display device 110. is done.
- the processing of the operation procedure display program from the equipment operation procedures stored in the storage resource, there is a process of selecting an appropriate equipment operation procedure for bringing the desired flocculation state and the desired sludge moisture content closer to each other. done.
- an equipment operation procedure that makes the agglomerated floc larger than the current condition is selected from the equipment operation procedure group, and the process of displaying this equipment operation procedure on the display device 110 is performed.
- an equipment operation procedure for reducing the water content of the dehydrated sludge is selected from the equipment operation procedure group, and this equipment operation procedure is displayed on the display device 110. processing takes place.
- sewage sludge is flocculated in an upstream flocculation tank 101, and sewage sludge is dewatered in a sludge dehydrator downstream of the flocculation tank 101.
- the current state of flocs generated by the addition of the coagulant (operational floc state) is imaged over time by the imaging device 105, and the computer 109 collects image information of the current state of flocculated flocs.
- the dehydrated sludge currently discharged from the sludge dehydrator is measured over time by the infrared measuring device 106, and the computer 109 acquires infrared reflectance information of the dehydrated sludge.
- the calculator 109 acquires the current water content of the dehydrated sludge (sludge water content during operation) based on the analysis of the infrared reflectance information.
- the processor of the computer 109 executes the operation procedure display program to determine the current flocculated floc state (floc state during operation) and the current water content of dehydrated sludge (sludge water content during operation). and the desired flocculation state and the desired sludge moisture content. Then, the processor outputs to the display device 110 the equipment operation procedure of the flocculation tank 101 and the sludge dehydrator for bringing the current state of flocculated flocs and the water content of the dewatered sludge closer to the desired state of flocculated flocs and the desired sludge water content. and displays the equipment operation procedure. In addition, in the processing of the operation content display program, real-time comparison processing is performed, and the equipment operation procedure is output to the display device 110 . Therefore, the display device 110 displays the latest equipment operation procedure.
- the operator of the sewage sludge treatment facility appropriately operates the flocculation tank 101 and the sludge dehydrator according to the latest information on the operation procedure of the facility displayed on the display device 110, so that the current flocculated floc state and the current dewatered sludge can be brought close to the desired flocculated state and the desired sludge water content, and the sewage sludge treatment facility can be operated appropriately.
- the equipment operation procedure of the sewage sludge treatment equipment for bringing the desired flocculated state and the desired sludge water content close to each other is displayed, so that even an inexperienced worker can support proper equipment operation. can be performed, and it becomes possible to execute proper equipment operation.
- FIG. 2 is a configuration diagram of a sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- a computer 109 is installed in a remote location different from the sewage sludge treatment plant where the sewage sludge treatment facility is installed. obtain information from the sewage sludge treatment facility via Further, the display device 110 is installed in a sewage sludge treatment plant where the sewage sludge treatment equipment is installed, and in the sewage sludge treatment equipment operation support navigation system 200, the display based on the output from the computer 109 via the communication network 201 is displayed. done.
- the computer 109 includes a processor, storage resources, and a communication unit.
- the communication unit is configured as an interface for communication.
- Information output from the imaging signal processing device 107 and the infrared signal processing device 108 is input to the communication unit via the communication network 201 .
- the output from the computer 109 is input to the display device 110 via the communication unit and the communication network 201 .
- the computer 109 is installed in a remote location different from the sewage sludge treatment plant, and the computer 109 can be used as a distribution server for distributing information to support the operation of the sewage sludge treatment facility. It is possible to realize support for facility operation of a sewage sludge treatment facility operator based on information from a remote location.
- FIG. 3 is an example of a display screen of the sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the operation procedure display device screen 301 (sometimes referred to as a display screen) of the display device 110 includes information related to the current date and time, information related to the flocculation tank 101, and information related to the sludge dewatering machine. and related information are displayed.
- the information related to the flocculation tank 101 and the information related to the sludge dewatering machine are classified and displayed.
- Information on the display screen 301 is displayed by executing an appropriate program. The program is stored in a storage resource and executed by a processor.
- the information related to the date and time may be displayed in an appropriate manner so that the worker can understand it, and numbers and symbols are used for the display of the information related to the date and time.
- Information related to the flocculation tank 101 includes, for example, information on the operation start time and operating time of the flocculation tank 101, information on the state of flocculation flocs, and information on equipment operation procedures related to the flocculation tank 101.
- the operation start time and operating time of the flocculation tank 101 may be displayed in an appropriate manner so that the operator of the sewage sludge treatment facility can understand. For example, numbers and symbols are used for display.
- the display of the state of flocculated flocs may be displayed in an appropriate manner so that the operator of the sewage sludge treatment facility can understand the current state of flocculated flocs.
- Image information acquired over time using device 105 may also be included.
- the size of the aggregated flocs may be displayed by numerical values or characters, or the shape of the aggregated flocs may be displayed. It may also contain information about the desired agglomerated floc state.
- the information on the equipment operation procedure for the flocculation tank 101 includes the equipment operation procedure for the flocculation tank 101 selected from the equipment operation procedure group described in the first embodiment. Therefore, for example, an equipment operation procedure for adjusting the rotation speed of the agitating device of the flocculation tank 101 in order to approach the desired flocculation state, and an equipment operation procedure for injecting a flocculating agent to approach the desired flocculation state are included.
- the display information of the equipment operation procedure of the coagulation tank 101 is displayed in an appropriate manner so that the operator of the sewage sludge treatment equipment can understand the equipment operation procedure for bringing the current state of flocculated flocs closer to the desired state of flocculated flocs. should be displayed.
- the operation procedure display program may display the facility operation procedure generated by combining the calculated value and the facility operation procedure related to the flocculation tank 101 in the facility operation procedure group. For example, when the current state of flocs is smaller than the desired state of flocculated flocs, the main polymer flocculating agent for achieving the desired state of flocculated flocs from the difference between the desired flocculated flocs and the current state of flocs by executing the injection amount calculation program.
- an operation procedure display program may be executed to display an equipment operation procedure including the injection amount of the polymer flocculant for achieving the desired flocculated state.
- the injection amount calculation program is stored in the storage resource and executed by the processor.
- the latest equipment operation procedure is displayed on the display device 110 in the same manner as in the first embodiment.
- a specific equipment operation procedure for achieving the desired agglomerated floc state is displayed. Therefore, for example, unlike the case where flocculated flocs are monitored in a flocculation facility and an index related to the state of flocculated flocs is displayed on a monitor device to simply monitor the state of a treatment plant, specific operation details are displayed. Even an inexperienced worker can perform appropriate operation management according to the displayed contents.
- Information related to the sludge dehydrator includes, for example, information on the operation start time and operating time of the sludge dehydrator, information on the moisture content of the dehydrated sludge, and information on the equipment operation procedure related to the sludge dehydrator.
- the display information of the operation start time and operation time of the sludge dehydrator may be displayed in an appropriate manner so that the operator of the sewage sludge treatment facility can understand it, and the operation start time and operation time of the sludge dehydrator is displayed using, for example, numbers and symbols.
- the information on the water content of the dewatered sludge (described as water content display in FIG. 3) is information on the water content of the dewatered sludge acquired by the infrared measuring device 106.
- the information on the water content of the dewatered sludge may be displayed in an appropriate manner so that the operator of the sewage sludge treatment facility can understand the current water content of the dewatered sludge.
- Information on the desired sludge moisture content may also be included.
- the information on the equipment operation procedure for the sludge dehydrator includes the equipment operation procedure for the sludge dehydrator selected from the equipment operation procedures of the equipment operation procedure group described in the first embodiment. Therefore, a facility operating procedure is included for adjusting the dewatering pressure of the sludge dewatering machine to approach the desired sludge moisture content.
- the display information of the equipment operation procedure of the sludge dewatering machine is provided appropriately so that the operator of the sewage sludge treatment equipment can understand the equipment operation procedure for bringing the water content of the current dewatered sludge closer to the desired sludge water content. It should be displayed in the form.
- the dehydration pressure of the sludge dehydrator for achieving the desired sludge water content is calculated from the desired sludge water content and the current water content, and the operation procedure display program is executed to calculate
- the equipment operation procedure generated by combining the dehydration pressure obtained and the equipment operation procedure related to the sludge dehydrator in the equipment operation procedure group may be displayed. That is, a facility operating procedure including a dehydration pressure for achieving a desired sludge moisture content may be displayed.
- the dehydration pressure calculation program is stored in the storage resource and executed by the processor.
- the latest equipment operation procedure is displayed on the display device 110 in the same manner as in the first embodiment.
- a facility operation procedure for adjusting the dehydration pressure of the sludge dehydrator to make the dewatered sludge discharged from the sludge dehydrator have a desired sludge water content.
- an equipment operation procedure for injecting the main polymer flocculant to make the turbidity in the sewage into a desired flocculated state are displayed on the display device 110, and the equipment operation procedure for injecting the polymer flocculant includes the main Injection volume of polymer flocculant is included.
- sewage sludge treatment includes an equipment operation procedure for injecting the main polymer flocculant to bring the desired flocculated floc state closer, and an equipment operation procedure for adjusting the dehydration pressure of the sludge dehydrator to bring the sludge moisture content closer to the desired.
- regression line information which is regression line data used for predicting and calculating the water content of dewatered sludge
- the predicted value of the dewatered sludge is calculated using the regression line information stored in the storage resource, and the predicted value of the water content of the dewatered sludge is compared with the desired sludge water content.
- a process of displaying on the display device 110 the equipment operation procedure of the sludge dewatering machine for bringing the predicted value of the water content of the dehydrated sludge close to the desired sludge water content is performed.
- the above regression line is obtained from dehydrated sludge with a known moisture content.
- An example of a method for obtaining regression line information will be described.
- dehydrated sludge with a known water content is irradiated with infrared rays, and infrared rays reflected from the dehydrated sludge are measured over time by an infrared measuring device 106 (infrared sensor).
- the data (time measurement information) acquired by time measurement is stored in the storage resource.
- infrared rays in a wavelength range of 1200 nm or more and 2500 nm or less are irradiated.
- infrared reflectance infrared spectrum
- primary differential processing primary differential processing
- multivariate regression analysis is performed on the results of the primary differential processing. to get the regression line information.
- the infrared reflectance calculated above can be considered as spectrum data (graph) in which the vertical axis indicates the reflectance (%) and the horizontal axis indicates the wavelength (nm). Then, the result of performing first-order differentiation processing on the infrared reflectance (more specifically, the result of first-order differentiation of the reflectance value of the infrared reflectance) shows the first-order differential value (dimensionless) on the vertical axis, and the horizontal axis It can be thought of as a graph, showing wavelength (nm) in . Then, a regression line is obtained by executing multivariate regression analysis on the results of the first-order differentiation processing.
- the number of variables that is, the interval of data points in the wavelength range
- the number of variables can be determined as appropriate.
- the infrared reflectance obtained over time and the regression line information described above are used to determine the water content of the dehydrated sludge discharged over time is calculated, and the calculated predicted value of the water content of the dehydrated sludge is compared with the desired sludge water content.
- the dehydrated sludge with a known water content has a water content in the range of 60 wt % or more and less than 90 wt %.
- the desired sludge moisture content is preferably in the range of 60 wt % or more and less than 85 wt %.
- the sewage sludge treatment facility operation support navigation system can perform the display shown in FIG.
- the display screen will be described with reference to FIG.
- FIG. 4 is an example of a display screen of the sewage sludge treatment facility operation support navigation system.
- the display screen 401 displays information on the moisture content of the dehydrated sludge (sludge moisture content is displayed in FIG. 4) and information on the operation procedure of the sludge dewatering machine. Information on the display screen 401 is displayed by executing an appropriate program.
- the program is stored in a storage resource and executed by a processor.
- the display of the information on the water content of the dehydrated sludge can be, for example, a graph containing a regression line 403, and in the graph, the measured value (water content obtained by actual measurement of the dewatered sludge) is shown on the horizontal axis. and the predicted moisture content is shown on the vertical axis. Further, in the display of information on the moisture content of the dewatered sludge, the value of the desired sludge moisture content 402 may be indicated by a straight line parallel to the measured value (that is, the horizontal axis).
- the operator of the sewage sludge treatment facility can operate the sludge dehydrator by referring to the display of the sludge moisture content and the display of the facility operation procedure of the sludge dehydrator.
- FIG. 5 is an example of a display screen of the sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the display screen 501 displays changes in the water content of the dehydrated sludge when the operator operates the sludge dehydrator according to the display information of the equipment operation procedure of the sludge dehydrator. . Specifically, the display screen 501 displays display information of the equipment operation procedure of the sludge dehydrator and information on the sludge moisture content (sludge moisture content display in FIG. 5). Information on the display screen 501 is displayed by executing an appropriate program. The program is stored in a storage resource and executed by a processor.
- the sludge moisture content display is shown by a graph as an example, with the horizontal axis showing the operating time of the dehydrator and the vertical axis showing the measured moisture content.
- the dehydrator operating time on the horizontal axis indicates the transition of the operating time of the sludge dehydrator, and the time transition is shown from the left side to the right side of the graph.
- the water content measurement value on the vertical axis (that is, the water content value 503) can be shown as a plot for each predetermined time against the operating time of the sludge dewatering machine, as an example.
- the measured value of the water content can be shown as the measured value (that is, the measured water content of the dehydrated sludge in the current state) in the leftmost plot, and can be shown as the predicted value in the plot on the right side.
- a curve obtained by curve fitting may be displayed as the sludge water content display.
- the desired sludge moisture content 502 ie, the value of the desired sludge moisture content 502
- the desired sludge moisture content 502 may be indicated by a straight line parallel to the dehydrator operating time (ie, horizontal axis).
- the change in the moisture content of the dewatered sludge can be obtained by executing an appropriate program.
- the transition of the water content of the dehydrated sludge (change in the water content of the dewatered sludge until it reaches the desired sludge water content) is obtained, for example, when the sludge dehydrator is operated according to the sludge dehydrator equipment operation procedure displayed on the display screen 501. can be obtained by estimating the time until the water content of the dewatered sludge converges to the desired sludge water content 502 .
- the transition of the water content of the dehydrated sludge (in other words, the desired sludge water content is reached by performing the operation of the display information. changing), it is possible to assist the operator of the sewage sludge treatment facility in operating the facility.
- FIG. 6 is an example of a display screen of the sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the display screen 601 displays the sludge moisture content display described in the fifth embodiment, the sludge volume value that is the volume value of the dehydrated sludge, and the sludge disposal cost that is the disposal cost of the dehydrated sludge. It's like Information on the display screen 601 is displayed by executing an appropriate program.
- the program is stored in a storage resource and executed by a processor.
- the storage resource stores a sludge volume value calculation program, a disposal cost calculation program, and a prediction display program. Each program is executed by a processor.
- the sludge volume value calculation program is a program used to calculate the sludge volume value, which is the volume value of dehydrated sludge dewatered using a sludge dehydrator.
- the sludge volume value may be estimated by an appropriate method. It may be estimated based on the relationship between the moisture content and For example, assuming that dewatered sludge is quantitatively discharged from the sludge dehydrator, the sludge volume value may be estimated based on the operating time of the dehydrator. Sludge volume values may also be estimated with adjustments based on moisture content.
- the sludge volume value calculation program may be used to display the calculated sludge volume value on the display device 110 .
- the sludge volume value calculation program may be used to display the current sludge volume value on the display device 110, for example.
- the disposal cost calculation program is a program used to calculate the sludge disposal cost based on the sludge volume value calculated by executing the sludge volume value calculation program.
- the sludge disposal cost should be estimated by an appropriate method.
- the disposal cost data that associates the dewatered sludge volume value and the dewatered sludge disposal cost is stored in a storage resource, and the sludge volume value calculated by executing the sludge volume value calculation program is compared with the data. Therefore, the sludge disposal cost can be estimated.
- the disposal cost calculation program may be used to display the calculated sludge disposal cost on the display device 110 .
- the disposal cost calculation program may be used, for example, to display the current sludge disposal cost on the display device 110 .
- the prediction display program is a program used to predict the sludge volume value and the sludge disposal cost for the operating time of the sludge dehydrator.
- the predicted value of the sludge volume value and the predicted value of the sludge disposal cost may be estimated by an appropriate method.
- the predicted sludge volume value can be obtained as follows. That is, when the sludge dewatering machine is operated so as to make dewatered sludge with the desired sludge water content (in other words, the sludge dewatering machine is operated according to the equipment operation procedure displayed on the display device 110, and the water content of the dehydrated sludge is In the case where the sludge water content changes while converging to the desired sludge water content, data that associates the operation time of the sludge dehydrator with the change in the sludge volume value is stored in a storage resource. Then, the sludge volume value (predicted value) at the predicted time can be obtained by applying the operating time of the sludge dehydrator up to the time when the sludge volume value is predicted to the data.
- the predicted value of the sludge disposal cost can be obtained, for example, by matching the obtained predicted value of the sludge volume value with the disposal cost data described above.
- the prediction display program is a program used to display the calculated predicted value of the sludge volume value and the calculated predicted value of the sludge disposal cost on the display device 110 .
- the mode of displaying the predicted value of the sludge volume value and the predicted value of the sludge disposal cost is not particularly limited, and numerical values and letters, for example, are used to display these predicted values.
- the predicted value after an appropriate predetermined time (predicted value of sludge volume value, predicted value of sludge disposal cost) is calculated, but as an example, the predicted value of annual sludge disposal cost may be asked.
- a predicted annual sludge disposal cost can be obtained by, for example, the following method. For example, a predicted sludge volume value per day is obtained, and the obtained sludge volume value is converted into an annual sludge volume value (that is, the predicted value of the sludge volume value for one day is multiplied by 365).
- the estimated annual sludge volume value obtained with data on sludge disposal costs that is, disposal cost data that associates the volume value of dewatered sludge with the disposal cost of dehydrated sludge
- a forecast of annual sludge disposal costs is required.
- a process of obtaining a predicted value of the sludge volume value per day, obtaining a sludge disposal cost per day from the sludge volume value, and converting the sludge disposal cost per day into an annual sludge disposal cost may be performed. .
- the sludge volume value is calculated, the calculated sludge volume value is displayed on the display device 110, the sludge disposal cost is calculated, the calculated sludge disposal cost is displayed on the display device 110, and sewage sludge It is possible to support the equipment operation of the workers of the treatment equipment.
- the annual sludge disposal cost is predicted, the predicted annual sludge disposal cost is displayed on the display device 110, and the equipment operation support for the operator of the sewage sludge treatment equipment can be performed. can.
- FIG. 7 is an example of a display screen of the sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the display screen 701 displays a histogram of the state of aggregated flocs (aggregated floc state histogram in the figure).
- This histogram is obtained by performing image processing on the image information obtained by the imaging device 105, and is data in which the number of aggregated flocs is the frequency with the aggregated floc area, which is the area of the aggregated flocs, as the class.
- Information on the display screen 701 is displayed by executing an appropriate program.
- the program is stored in a storage resource and executed by a processor.
- This image processing includes a process of clarifying the aggregated flocs and calculating the aggregated floc area, which is the area of the aggregated flocs.
- this image processing includes a process of converting image information acquired by the imaging device 105 into a monochrome image, a process of performing histogram averaging on the monochrome image, and an image acquired by the histogram averaging process. includes a process of performing Gaussian filtering. That is, the image acquired by the imaging device 105 is converted to a monochrome image and flattened (that is, increased in contrast) by histogram averaging processing. Then, the histogram-averaged image is subjected to Gaussian filter processing (that is, processing is performed to blur the image and adjust the brightness smoothly).
- Gaussian filter processing that is, processing is performed to blur the image and adjust the brightness smoothly.
- this image processing includes a process of binarizing the image obtained by the above Gaussian filter process, and extracting a pixel area with the sewage area as a background part in the image obtained by the binarization process. and extracting the outline of the pixel region to extract the pixel connected region for the background portion. That is, the Gaussian filtered image is converted to a binary image (eg, black and white) based on the binarization process. Then, in the binary image, a pixel region with the sewage region as a background portion is extracted in order to analyze the agglomerated floc portion. As a result, the agglomerated floc portion is extracted. Furthermore, the contour of the pixel region is extracted. Then, the connectivity with the contour of the pixel region is determined, the portion having the same value as the pixel of the contour of the pixel region is extracted from the background portion, and the pixel connected region for the background portion is extracted.
- a binary image eg, black and white
- this image processing includes a process of obtaining an integrated number of pixels obtained by accumulating the number of pixels in the pixel-connected area by making the pixel-connected area the shape of an agglomerated floc, and a process of calculating the aggregated floc area, which is the area of the aggregated flocs, by converting the integrated number of pixels. That is, in these processes, the number of pixels in the pixel-connected region (integrated pixel number) is obtained, and the aggregated floc area is converted from the integrated pixel number in consideration of the area of the image acquired by the imaging device 105 .
- the above histogram is generated using the aggregated floc area obtained by the above image processing.
- the number of aggregated flocs can be obtained by imaging with the imaging device 105, or can be appropriately obtained in the process of image processing.
- Image processing and histogram generation processing are performed by executing appropriate programs.
- the processor uses the operation procedure display program to display a histogram obtained from image information measured over time by the imaging device 105 during operation of the sewage sludge treatment facility and a histogram relating to the desired flocculated floc state.
- the display device 110 displays a facility operation procedure (for example, an operation of injecting a polymer flocculant) for bringing the flocculated floc state of the sewage sludge treatment facility closer to the flocculated floc state based on the desired flocculated floc state. .
- the display screen 701 displays a histogram obtained by performing image processing on image information obtained by the imaging device 105 when the sewage sludge treatment facility is in operation.
- a histogram of desired agglomerated floc states (a histogram where the agglomerated floc area is the class and the number of agglomerated flocs is the frequency) may also be displayed.
- a histogram regarding the state of agglomerated flocs, and an equipment operation procedure (for example, an operation of injecting a polymer flocculant) for bringing the state of agglomerated flocs closer to the state of agglomerated flocs based on the desired agglomerated floc state. can be displayed on the display device 110 to assist the operator of the sewage sludge treatment facility in operating the facility.
- Equipment operating procedures may be displayed that include dosing amounts of polymeric flocculants to achieve the desired flocculation state.
- the rotation speed of the agitating device is changed to reduce the flocculated flocs by increasing the stirring speed of the flocculating tank 101.
- a facility operation procedure to enlarge may be displayed.
- the aggregated flocs in the image information acquired by the imaging device 105 are aggregates with a length range of 1 mm or more and 50 mm or less. As a result, accurate image processing can be performed, and more appropriate equipment operation support (that is, more appropriate equipment operation procedure display) can be performed.
- FIG. 8 is an example of a display screen of the sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the display screen 801 displays changes in the floc area when the operator operates the flocculation tank 101 according to the display information of the equipment operation procedure of the flocculation tank 101 . Specifically, the display screen 801 displays the display information of the equipment operation procedure of the flocculation tank 101 and the information on the floc area (in FIG. 8, the number of flocs). Information on the display screen 801 is displayed by executing an appropriate program. The program is stored in a storage resource and executed by a processor.
- the information about the floc area is shown by a graph as an example, where the horizontal axis indicates the operating time of the flocculation tank 101 and the vertical axis indicates the floc area.
- the coagulation tank operating time on the horizontal axis indicates the transition of the coagulation tank 101 operating time, and the time transition is shown from the left side to the right side of the graph.
- the floc area on the vertical axis can be shown as a plot for each predetermined time with respect to the operation time of the flocculation tank 101, as an example.
- the floc area can be indicated by plotting on the left end as a measured value (that is, the current floc area), and by plotting on the right side thereof as a predicted value.
- a curve obtained by curve fitting may be displayed as the information about the floc area. Further, in the floc area information, the floc area value in the desired flocculation floc state may be indicated by a straight line parallel to the flocculation tank operating time (that is, the horizontal axis).
- the floc area can be used by calculating the area of a representative floc from the histogram on the state of the agglomerated floc in the seventh embodiment, for example. Further, the transition of the floc area (change in floc area until the desired flocculated floc state is reached) is obtained, for example, when the flocculation tank 101 is operated according to the equipment operation procedure of the flocculation tank 101 displayed on the display screen 801 (here , the display of the equipment operation procedure of the flocculation tank 101 can be, for example, the same as the display screen 701 described in the seventh embodiment), until the floc area converges to the floc area in the desired flocculated floc state It can be obtained by estimating the time.
- the flocculation tank 101 when the flocculation tank 101 is operated according to the display information of the equipment operation procedure of the flocculation tank 101, the transition of the floc area (in other words, the change to the desired flocculation floc state due to the operation of the display information ), it is possible to assist the operator of the sewage sludge treatment facility in operating the facility.
- FIG. 9 is an algorithm flow showing an example of use of a sewage sludge treatment facility operation support navigation system using the image analysis method of the measured aggregated floc image. It should be noted that explanations overlapping with the contents already explained may be omitted. Also, the algorithm flow of FIG. 9 is a process performed by a processor executing an appropriate program.
- image measurement of the flocculation tank 101 is performed by the imaging device 105, and the obtained image information is stored in the storage resource (processes 901 to 903).
- image processing described in the above seventh embodiment is performed. That is, monochrome image conversion processing, histogram averaging processing, Gaussian filter processing, binarization processing, contour extraction, connected pixel region extraction, contour Calculation of the inner area (that is, calculation of the aggregated floc area) is performed (processing 904 to processing 910).
- process 904 to 910 are performed by experienced personnel who have extensive experience in operating sewage sludge treatment facilities, for example. Then, the data of the state of agglomerated flocs that is considered to be good for an experienced person is stored (learned) in the storage resource as a desired agglomerated floc state (in this example, a histogram of the desired agglomerated floc state) (process 912). .
- a desired agglomerated floc state in this example, a histogram of the desired agglomerated floc state
- the processor executes the operation procedure display program to perform image processing on the image information acquired from the sewage sludge treatment facility.
- the histogram obtained by performing processing 902 to processing 910 is compared with the histogram of the desired agglomerated floc state obtained in the above-described processing 912, and the current state of the agglomerated floc is compared with the desired state.
- a facility operation procedure for the flocculation tank 101 for approaching the state of flocculation is displayed (process 911).
- the display screen 701 on which a histogram is displayed can be displayed.
- FIG. 10 is an algorithm flow showing an example of a method of obtaining a regression line from the infrared reflectance and predicting the water content using the regression line in the sewage sludge treatment facility operation support navigation system. It should be noted that explanations overlapping with the contents already explained may be omitted. Also, the algorithm flow of FIG. 10 is a process performed by the processor executing an appropriate program.
- the regression line information described in the above fourth embodiment is obtained. That is, dehydrated sludge having a known moisture content is irradiated with infrared rays, and infrared rays reflected from the dehydrated sludge are measured over time. Then, the infrared reflectance calculated from the measurement information is subjected to primary differential processing, the result of the primary differential processing is subjected to multivariate regression analysis, and a moisture content regression line is calculated (processes 1002 to 1005). Then, the moisture content regression line calculated from the dehydrated sludge having a known moisture content is stored (learned) in the storage resource (process 1006).
- the sewage sludge treatment facility operation support navigation system (100, 200) described above may be provided with a temperature sensor, for example. Then, a temperature sensor measures and acquires data on the temperature of the dewatered sludge discharged from the sludge dehydrator, and in the processing of the operation procedure display program, sludge dehydration for bringing the water content of the dewatered sludge closer to the desired sludge water content. Data relating to dewatered sludge temperature may be used to select and display equipment operating procedures for the machine.
- the method of using the data obtained from the temperature sensor is not particularly limited in order to bring the moisture content of the dehydrated sludge discharged from the sludge dehydrator closer to the desired sludge moisture content.
- the desired sludge temperature as data of the temperature of dewatered sludge with the desired sludge moisture content is stored in a storage resource, and in the processing of the operation procedure display program, the temperature is measured by the temperature sensor when the sewage sludge treatment facility is in operation.
- the dewatered sludge temperature and the desired sludge temperature may be compared, and the sludge dehydrator equipment operation procedure for bringing the current dehydrated sludge temperature closer to the desired sludge temperature may be displayed on the display device 110 .
- the sludge dehydrator equipment operation procedure for bringing the current dehydrated sludge temperature closer to the desired sludge temperature may be displayed on the display device 110 .
- the sludge dehydrator equipment operation procedure for bringing the current dehydrated sludge temperature closer to the desired sludge temperature may be displayed on the display device 110 .
- the sludge dehydrator equipment operation procedure for bringing the current dehydrated sludge temperature closer to the desired sludge temperature may be displayed on the display device 110 .
- Information may be displayed regarding equipment operating procedures that increase the .
- the water content of the current dewatered sludge is considered to be lower than the desired sludge water content.
- Information regarding facility operating procedures for reducing the dehydration pressure may be displayed. Also, by executing the dehydration pressure calculation program, the appropriate dehydration pressure is calculated from the current dewatered sludge temperature and the desired sludge temperature, and the equipment operation procedure including the calculated dehydration pressure is displayed. good too.
- the position of the temperature sensor is not particularly limited as long as it can appropriately measure the temperature of the dewatered sludge in the sewage sludge treatment facility.
- the temperature sensor can be appropriately provided, for example, in the sludge dehydrator discharge section 103, the dehydrated sludge flow path (for example, dehydrated sludge transport path) on the downstream side of the sludge dehydrator discharge section 103, the sludge storage tank 104, and the like. can.
- the measurement data of the temperature sensor is signal-processed by an appropriate method and used in the processing of the computer 109 .
- the temperature sensor may be installed at any position in the sewage sludge treatment facility. Temperatures indicated by meteorological data may also be used for temperature measurements.
- the sewage sludge treatment facility operation support navigation system (100, 200) may be provided with, for example, a humidity sensor. Then, a humidity sensor measures and acquires data related to the humidity around the dewatered sludge discharged from the sludge dewatering machine, and in the processing of the operation procedure display program, the moisture content of the dehydrated sludge is used to approach the desired sludge moisture content. Data on dewatered sludge humidity may be used to select and display sludge dewatering equipment operating procedures.
- the method of using the data obtained from the humidity sensor is not particularly limited in order to bring the moisture content of the dehydrated sludge discharged from the sludge dehydrator closer to the desired sludge moisture content.
- the desired sludge humidity as humidity data of dewatered sludge with a desired sludge moisture content is stored in a storage resource, and in the processing of the operation procedure display program, the humidity sensor is used when the sewage sludge treatment facility is in operation.
- the humidity of the dewatered sludge and the desired sludge humidity may be compared to display the sludge dehydrator equipment operation procedure for bringing the current humidity of the dewatered sludge closer to the desired sludge humidity.
- the water content of the current dewatered sludge is considered to be lower than the desired sludge water content.
- Information may be displayed regarding equipment operating procedures that reduce the .
- the current humidity of the dewatered sludge is higher than the desired sludge humidity
- the water content of the current dewatered sludge is considered to be higher than the desired sludge water content.
- Information regarding equipment operating procedures for increasing the dehydration pressure may be displayed. Further, by executing the dehydration pressure calculation program, the dehydration pressure is calculated from the current dewatered sludge humidity and the desired sludge humidity, and the equipment operation procedure including the calculated dehydration pressure may be displayed. .
- the position of the humidity sensor is not particularly limited as long as it can appropriately measure the humidity of the dewatered sludge.
- the humidity sensor can be appropriately provided in the sludge dehydrator discharge section 103, the dewatered sludge flow path (eg, dehydrated sludge transport path) on the downstream side of the sludge dehydrator discharge section 103, the sludge storage tank 104, and the like. can.
- the measured data of the humidity sensor is signal-processed by an appropriate method and used in the processing of the computer 109, for example.
- a more suitable position for the humidity sensor is preferably around the infrared measuring device or around a position where the infrared measuring device irradiates the dehydrated sludge with infrared rays. This is because if there is high-humidity air on the path of infrared radiation and reflection, the amount of infrared radiation absorbed by the air will change, so it is necessary to consider humidity. If the humidity of the entire sewage sludge treatment facility does not change substantially, data from humidity sensors at arbitrary positions in the sewage sludge treatment facility may be substituted. Furthermore, humidity indicated by weather data may be used.
- the sewage sludge treatment facility operation support navigation system (100, 200) may be provided with both the temperature sensor and the humidity sensor described above, or may be provided with either the temperature sensor or the humidity sensor.
- FIG. 11 is a configuration diagram of a sewage sludge treatment facility operation support navigation system according to the eleventh embodiment. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- the sewage sludge treatment facility operation support navigation system 1100 includes sewage from a sludge thickening tank 1101, a thickened sludge storage tank 1102, a flocculation tank 1103, a sludge dewatering machine 1104, and a sludge storage tank 1105 as a flow of the sewage sludge treatment process.
- a sewage sludge treatment plant where sludge treatment equipment is installed, it is provided to realize operation support and control of the sludge treatment equipment to improve the efficiency of sludge treatment.
- the sludge thickening tank 1101 is configured as a tank for thickening the raw sludge supplied from the upstream side.
- the sludge is sedimented, and the supernatant liquid is separated to increase the concentration).
- the thickened sludge storage tank 1102 is configured as a tank for storing the thickened sludge that has been concentrated by reducing the water content in the sludge thickening tank 1101 .
- a process of thickening the sludge may be performed in the thickened sludge storage tank 1102, as an example, as in the case of the sludge thickening tank 1101, treatment based on sedimentation separation may be performed.
- the temperature sensors (1106 to 1109) are provided so as to be able to measure temperature at multiple locations.
- the temperature sensor 1106 is provided so as to measure the water temperature of the sludge thickening tank 1101 .
- a temperature sensor 1107 is provided so as to measure the water temperature of the thickened sludge storage tank 1102 .
- a temperature sensor 1108 is provided so as to measure the water temperature of the aggregation tank 1103 .
- a temperature sensor 1109 is provided so as to measure the temperature of the dewatered sludge.
- the temperature measurement signals obtained by the plurality of temperature sensors (1106-1109) are output to the signal processing device 1110.
- the signal processing device 1110 performs signal processing on the input temperature measurement signal, acquires temperature information, and outputs the acquired temperature information to the computer 1111 .
- the sludge thickening tank 1101 and the thickened sludge storage tank 1102, which are equipment for the sewage treatment process, are appropriately provided with temperature sensors for measuring the water temperature of the tanks. ) can obtain information on the state of the sludge entering.
- the computer 1111 can display the equipment operation details based on the information on the state of the sludge entering the flocculation tank (1103). For example, when the water temperature of the sludge thickening tank 1101 and the thickened sludge storage tank 1102 is higher than during normal operation, more gas due to fermentation (eg, anaerobic fermentation) is generated from the sludge than during normal operation.
- the injection amount of the polymer flocculant may be adjusted based on the temperature information acquired from the temperature sensors (1106, 1107), and by executing the operation procedure display program, A facility operating procedure for injecting the adjusted injection amount of the polymer flocculant may be displayed on the display device 1112 . In this way, it is possible to display the equipment operation procedure based on the data acquired by the temperature sensor, and to assist the operation of the sewage sludge treatment equipment operator.
- a temperature sensor may be provided at a position in contact with the dehydrated sludge to acquire the temperature of the dehydrated sludge. good.
- the sewage sludge treatment facility operation support navigation system 1100 may be appropriately provided with a gas sensor (1107) for detecting gas generated from sludge in the thickened sludge storage tank (1102). .
- a gas measurement signal acquired by this gas sensor (1107) is output to the signal processing device 1110.
- FIG. The signal processing device 1110 performs signal processing on the input gas measurement signal, acquires gas information, and outputs the acquired gas information to the computer 1111 .
- the computer 1111 calculates the injection amount of the polymer flocculant based on the gas information obtained from the gas sensor (1107) by executing the injection amount calculation program, as in the case of the temperature sensors (1106, 1107) described above.
- the equipment operation procedure for injecting the adjusted injection amount of the polymer flocculant may be displayed on the display device 1112 by executing the operation procedure display program.
- the gas information generated from the sludge entering the flocculating tank (1103) is incorporated, and the equipment operation procedure is displayed based on the data acquired by the gas sensor (1107) to assist the operator of the sewage sludge treatment equipment. It can be performed.
- an equipment operation procedure for performing flocculation treatment suitable for generating the desired flocculation state is displayed. For example, if the water temperature of the aggregation tank 1103 deviates from the reference temperature or the reference temperature range, it is conceivable that the solubility of the polymer flocculant will decrease and poor aggregation will occur.
- the injection amount of the polymer flocculant may be adjusted based on the temperature information acquired by the temperature sensor 1109 by executing the injection amount calculation program, and the injection amount adjusted by executing the operation procedure display program A facility operating procedure for injecting an amount of polymeric flocculant may be displayed on the display device 1112 .
- the reference temperature and the reference temperature range are data indicating a temperature or a temperature range in which an appropriate agglomeration process can be performed to generate a desired agglomerated floc state, and are stored in the storage resource.
- the same processing as the explanation of the temperature sensor in the above sewage sludge treatment facility operation support navigation system (100, 200) is performed. That is, by processing the operation procedure display program, based on the temperature information of the dehydrated sludge acquired by the temperature sensor 1109, the equipment operation procedure for bringing the water content of the dewatered sludge closer to the desired sludge water content is displayed on the display device 1112. .
- FIG. 12 is a configuration diagram of a sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- a computer 1111 is installed in a remote location different from the sewage sludge treatment plant where the sewage sludge treatment facility is installed. obtain information from the sewage sludge treatment facility via Further, the display device 1112 is installed in a sewage sludge treatment plant where sewage sludge treatment equipment is provided, and in the sewage sludge treatment equipment operation support navigation system 1200, display based on the output from the computer 1111 via the communication network 1201 is displayed. done.
- the computer 1111 includes a processor, storage resources, and a communication unit.
- the communication unit is configured as an interface for communication.
- Information output from the signal processing device 1110 is input to the communication unit via the communication network 1201 .
- the output from the computer 1111 is input to the display device 1112 via the communication unit and the communication network 1201 .
- the computer 1111 is installed in a remote location different from the sewage sludge treatment plant, and the computer 1111 can be used as a distribution server for distributing information to support the operation of the sewage sludge treatment facility. It is possible to realize support for facility operation of a sewage sludge treatment facility operator based on information from a remote location.
- FIG. 13 is a configuration diagram of a sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- a sewage sludge treatment facility operation support navigation system 1300 includes a plurality of image cameras (1305 to 1308) for photographing the operation panel of the sewage sludge treatment facility.
- the image camera 1305 is provided so as to be able to photograph the control panel 1301 of the sludge thickening tank.
- An image capturing device 1306 is provided so as to capture an image of the operation panel 1302 of the thickened sludge storage tank.
- An image capturing device 1307 is provided so as to capture an image of the operation panel 1303 of the coagulation tank.
- An image capturing device 1308 is provided so as to capture an image of the operation panel 1308 of the sludge dewatering machine.
- Image signals acquired by the plurality of image capturing devices (1305 to 1308) are output to the signal processing device 1309.
- the signal processing device 1309 performs signal processing on the input image signal, acquires operation panel information, and outputs the acquired operation panel information to the computer 1310 .
- image recognition can be an appropriate matching process. That is, the image data obtained by photographing the state indicated by the instrument on the operation panel at the desired floc state and the desired sludge moisture content is recorded in a storage resource, and by executing an appropriate image recognition program, the image data and the current instrument is compared with image data obtained by photographing the state indicated by .
- the image recognition program is stored in a storage resource and executed by a processor. Then, the computer 1310 executes the operation procedure display program, based on the result of the image recognition, selects the facility operation procedure for bringing the desired floc state and the desired sludge moisture content closer to the state indicated by the meter, out of the facility operation procedure group. Alternatively, an equipment operation procedure including the injection amount of the polymer flocculant and the dehydration pressure of the sludge dehydrator is generated as appropriate, and the equipment operation procedure is displayed on the display device 1311 . As described above, in this embodiment, it is possible to display the equipment operation procedure based on the data of the instruments on the control panel, and to assist the operation of the sewage sludge treatment equipment operator.
- FIG. 14 is a configuration diagram of a sewage sludge treatment facility operation support navigation system. It should be noted that, in describing the present embodiment, descriptions that overlap with the contents already described may be omitted.
- a computer 1310 is installed in a remote location different from the sewage sludge treatment plant where the sewage sludge treatment facility is installed. obtain information from the sewage sludge treatment facility via Further, the display device 1311 is installed in a sewage sludge treatment plant where sewage sludge treatment equipment is provided, and in the sewage sludge treatment equipment operation support navigation system 1400, display based on the output from the computer 1310 via the communication network 1401 is displayed. done.
- the computer 1310 includes a processor, storage resources, and a communication unit.
- the communication unit is configured as an interface for communication.
- Information output from the signal processing device 1309 is input to the communication unit via the communication network 1401 .
- the output from the computer 1310 is input to the display device 1311 via the communication unit and the communication network 1401 .
- the computer 1310 is installed in a remote location different from the sewage sludge treatment plant, and the computer 1310 can be used as a distribution server for distributing information to support the operation of the sewage sludge treatment facility. It is possible to realize support for facility operation of a sewage sludge treatment facility operator based on information from a remote location.
- the present invention is not limited to the above-described embodiments, and includes various modifications.
- the above-described embodiments have been described in detail for better understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- the imaging device 105, the infrared measurement device 106 , a humidity sensor, or the like may be used.
- the position of the infrared measurement device 106 described above is not particularly limited as long as the dehydrated sludge can be measured appropriately.
- the infrared measurement device 106 is appropriately provided in the sludge dehydrator discharge unit 103, the dewatered sludge flow path (for example, the dehydrated sludge transport path) on the downstream side of the sludge dehydrator discharge unit 103, the sludge storage tank 104, and the like. be able to.
- the position of the imaging device 105 described above is not particularly limited as long as the flocculated flocs in the flocculation tank 101 can be measured appropriately.
- the imaging device 105 is appropriately provided, for example, at a position where flocculated flocs in the flocculation tank 101 can be measured, inside the flocculation tank 101, outside the flocculation tank 101, in a sludge flow path on the downstream side of the flocculation tank 101, and the like. be able to.
- the signal processing of the acquired data is performed by the imaging signal processing device 107 and the infrared signal processing device 108.
- the imaging signal processing device 107 and the infrared signal processing device 108 are omitted, and a program for performing the signal processing is stored in the storage resources of the computer, and the signal processing is performed by executing the program by the processor. good too.
- the signal processing devices (1110, 1309) may be configured as part of the computer. Signal processing may be performed by a computer without the signal processing devices (1110, 1309).
- a CPU can be considered as an example of a processor, but other semiconductor devices (for example, GPU) may be used as long as they are the subject that executes predetermined processing.
- semiconductor devices for example, GPU
- the storage resource can be a hard disk drive (HDD), but the storage resource can be an appropriate recording device.
- the storage resource may be, for example, a Solid State Drive (SSD), which is a drive using semiconductor device memory.
- SSD Solid State Drive
- the fifteenth embodiment will be described. Note that the same description as above may be omitted.
- a sewage sludge treatment facility operation support navigation system that calculates a water content rate prediction value, which is a water content rate prediction value, using a calculation method different from that of the fourth embodiment will be described.
- the method of calculating the water content is different, and the method of using the water content in the sewage sludge treatment facility operation support navigation system is the same as in the case of the fourth embodiment. be.
- regression line information which is regression line data used for predicting and calculating the water content of dewatered sludge
- the predicted value of the dewatered sludge is calculated using the regression line information stored in the storage resource, and the predicted value of the water content of the dewatered sludge is compared with the desired sludge water content.
- a process of displaying on the display device 110 the equipment operation procedure of the sludge dewatering machine for bringing the predicted value of the water content of the dehydrated sludge close to the desired sludge water content is performed.
- FIG. 15 is a flow chart showing an example of the flow of analysis for calculating the water content of dehydrated sludge.
- dehydrated sludge with a known moisture content is irradiated with infrared rays after the start of operation of the facility (S101), and infrared rays reflected from the dehydrated sludge are measured with an infrared measuring device (infrared sensor) over time.
- the data (time measurement information) acquired by time measurement is stored in the storage resource.
- infrared rays in a wavelength range of 1200 nm or more and 2500 nm or less are irradiated.
- the absorbance of the reflected infrared light (infrared spectrum) is calculated from the data acquired by the measurement over time (S102), the absorbance of the reflected infrared light is smoothed, and the result of the smoothing is offset. Correction (baseline correction) is performed (S103).
- this method performs multivariate regression analysis (multiple regression analysis in this example) (S104), obtains regression line information (S105), and stores the calculated regression line information of the moisture content in the storage resource. is stored (learned) in (S106).
- Regression line information can be, for example, a regression coefficient or a correction coefficient, but other coefficients can be used as long as they define a regression line (actually, it does not have to be a linear function based on the definition of statistics). It can be. Also, if the regression line can be represented by multiple functions, it may be an identifier assigned to the function indicating which function was applied, or a weighting factor that adds the results of multiple functions. .
- the calculated absorbance of the reflected infrared light can be considered as spectral data (graph), for example, in which the vertical axis indicates the absorbance (arbitrary unit) and the horizontal axis indicates the wavelength (nm). Then, the absorbance of the reflected infrared light is smoothed, offset correction (baseline correction) is performed on the result of the smoothing process, and multivariate regression analysis is performed on the result to obtain a regression line.
- offset correction baseline correction
- multivariate regression analysis is performed on the result to obtain a regression line.
- the number of variables that is, the number of data points in the wavelength range
- the predicted value of the moisture content can be obtained.
- the absorbance of the reflected infrared light acquired over time and the regression line information described above are used to determine the amount of dehydrated sludge discharged over time.
- a predicted value of the water content is calculated (S107 to S109), and the calculated predicted value of the water content of the dehydrated sludge is compared with the desired sludge water content.
- the dehydrated sludge with a known water content has a water content in the range of 60 wt % or more and less than 90 wt %.
- the desired sludge moisture content is preferably in the range of 60 wt % or more and less than 85 wt %.
- the desired sludge moisture content may be specified by a pinpoint value in addition to such range specification.
- FIG. 16 is an example of the menu screen.
- the menu screen I1 shown in FIG. 16 is displayed on the display device by the processor executing the program of the sewage sludge treatment facility operation support navigation system.
- the menu screen I1 includes a plurality of items, and the sewage treatment plant worker can appropriately select and determine the item to be referred to.
- the contents of the items displayed on the menu screen I1 will be described in order.
- sewage treatment plant workers can register registration information, which is information to be registered in the system.
- the registered information includes, for example, information such as worker, temperature, and humidity.
- the registration method may be selected in a pull-down format, or may be directly input by the operator.
- numerical data such as temperature and humidity
- data obtained from a sensor may be automatically input (registered).
- meteorological data may be appropriately acquired, and numerical data such as temperature and humidity based on the meteorological data may be automatically input (registered).
- Weather data can be obtained from the outside via a network, for example.
- sensors include temperature, humidity, coagulant floc imaging device, moisture content infrared measurement device, coagulant addition flow rate and concentration in the coagulation tank, agitator rotation speed, sludge flow rate and sludge concentration , and measuring instruments for measuring values related to the pressing pressure of the sludge in the dehydrator.
- centrifugal force in the case of a centrifugal dehydrator pressurization force in the case of a pressurized dehydrator, adjustment of the tension pressure of the filter cloth in the case of a belt press dehydrator, rotation speed of sludge in the case of a multi-disk dehydrator, and screw press dehydration.
- a sensor that measures the number of revolutions of a screw, etc., but it is not limited to these exemplified measurement sensors (measuring devices). Specific examples of some of the illustrated sensors will be described later.
- the “measurement condition settings” item is mainly intended for programmers of navigation systems.
- the “measurement condition setting” stores an analysis algorithm for images of flocculated flocs in the flocculation tank and a multiple regression analysis algorithm for calculating the moisture content of dried sludge (dehydrated sludge).
- the aggregation floc analysis algorithm it is possible to set the image area, histogram equalization, filter method, binarization threshold, etc. Also, the range of aggregated floc size to be analyzed, the diameter or area of the range of aggregated flocs to be analyzed, the range of average floc diameter, the range of number of flocs, etc. may be set. For example, by setting the size of agglomerated flocs, it is possible to easily confirm the generation state of agglomerated flocs in a desired size range.
- the target moisture content range the measurement conditions of the sensor that measures the moisture content (number of scans, gain setting, presence or absence of smoothing, measurement speed, etc.), calibration data, and infrared optical information. It is possible to input (set) regression coefficients, correction coefficients, etc. for conversion to moisture content.
- the "measurement progress" and “histogram” items are mainly intended for navigation system programmers, similar to the “measurement condition setting” item. Data related to the measurement progress may be stored in the item “measurement progress”. In addition, data used for histogram processing may be stored under the item “histogram”. However, these items may be omitted from the screen display.
- the item "confirmation of status” mainly relates to a screen intended for sewage treatment plant workers.
- An example of "confirm status”, that is, an example of this screen will be described with reference to FIG.
- FIG. 17 shows an example of a screen for status confirmation.
- the worker can numerically grasp the current size and number of flocs and the moisture content.
- the image of aggregated flocs can be grasped using the screen I2.
- information indicating changes in numerical values over time for example, a graph that associates numerical values with a time axis, as shown in FIG. 17 may be displayed.
- the number and diameter of the current flocs, the water content, and the numerical data of infrared spectrum information for calculating the water content can be saved and output.
- an upper limit value and a lower limit value may be set, and a warning may be issued when the current value deviates from the set value.
- a warning may be issued when the current value deviates from the set value.
- a warning may be given by blinking to notify an abnormality.
- the warning is not particularly limited as long as the warning is given by an appropriate means, and the worker or the like can grasp the warning.
- the warning may be given by sounding an alarm using a buzzer or the like.
- operation instruction relates to a screen that displays the details of the recommended equipment operation.
- An example of the "operation instruction”, that is, an example of this screen will be described with reference to FIG.
- FIG. 18 shows an example of a screen related to operation instructions.
- the recommended equipment operation content is displayed.
- each equipment operation content is associated with a priority, which is a value for recommending the operation content. is displayed on the screen I3. Further, the quantity to be operated (manipulated quantity) is also displayed on the screen I3.
- Equipment that is subject to recommended operation includes a coagulation tank and a dehydrator.
- the recommended operation is displayed in a manner that distinguishes which equipment to operate.
- a display including information indicating which equipment is to be operated is displayed. Therefore, by referring to the display, it is possible to easily grasp which facility should be operated.
- the operation of adding an inorganic flocculant or a polymer flocculant, or the operation of increasing or decreasing the addition rate may be mentioned as equipment operation contents.
- the equipment operation contents include an operation to increase or decrease the screw rotation speed, an operation to pressurize or depressurize for dehydrating sludge, and the like. Then, the quantity to be operated in each operation is associated and displayed. Moreover, the priority of each equipment operation content is also displayed, and each equipment operation content is arranged and displayed in order of priority.
- Workers at the sewage treatment plant can enter the details of the operation after performing the recommended operation on the sewage treatment facility. Select one of the items (No, recommended operation, quantity to be operated, priority) in the row of the actually operated content (that is, the content of the operation with the highest priority) among the facility operation details on the screen.
- a convenient mechanism for transitioning to an input screen for "contents of implementation", which will be described later, may be provided. That is, the screen I3 may be a screen for inputting the contents of an actual operation using a mouse or the like, and the input of the implementation contents may be performed on the screen I3.
- the menu screen I2 may be output by selecting the home button, etc., and the operation content may be input by selecting "implementation content" from the menu screen I2.
- the item “implementation content” relates to an input screen for actually operated equipment operation details.
- An example of the “contents of implementation” screen will be described with reference to FIG. 19 .
- FIG. 19 shows an example of a screen related to implementation details.
- the screen I4 for inputting "implementation details" includes a first area A1, a second area A2, and a third area A3.
- the first area A1 is an area for inputting the content of the implementation (that is, the content of the equipment operation actually performed). And this 1st area A1 contains the input column E1 regarding an operation item, and the input column E2 regarding the operation quantity.
- the second area A2 is an area for inputting the quality of the result of the implementation content.
- the third area A3 is an area for inputting the implementation time (implementation time).
- the display device includes a first area A1 for inputting or selecting the contents of the actual equipment operation by the user, a second area A2 for inputting or selecting the quality of the result of implementing the equipment operation contents, and a second area A2 for inputting the execution time.
- a screen having 3 areas A3 is displayed.
- the processor has a first area A1 for inputting or selecting the actual equipment operation content by the user, a second area A2 for inputting or selecting the quality of the result of implementing the equipment operation content, and a second area A2 for inputting the execution time.
- a screen having three areas A3 is displayed on the display device. In FIG. 19, the first area A1, the second area A2, and the third area A3 are arranged side by side as an example.
- the input screen I4 for the implementation content (more specifically, in the first area A1): Content regarding this operation may be automatically input and the input content may be displayed.
- the processor receives the specification of the equipment operation content on the screen I3, specifies the operation item and the operation quantity related to the received equipment operation content, and inputs the specified operation item and the operation quantity in the first area A1.
- the input screen I4 for "contents of implementation” may be a screen for inputting the details of implementation by the user.
- the significant digits of the manipulated quantity are not particularly limited as long as they are appropriate. Together (for example, considering the scale of the sewage treatment plant and the treatment capacity per hour), it can be determined as appropriate. For example, the addition rate of coagulant and the number of screw rotations are determined appropriately according to the state of the sewage treatment plant. can be
- the results (implementation results) in the second area A2 such as whether the floc aggregation state and water content have improved, whether there is no change, or whether additional additions are necessary as a result of implementing the equipment operation details. can be entered.
- automatic input may be performed, and the processor may determine the quality of the implementation result from the transition of the aggregated floc and the transition of the moisture content after the implementation, and may input the implementation result to the second area A2. .
- the time when the exercise was performed is entered in the third area A3. The time may be automatically recorded in conjunction with the automatic input of the implementation details, or may be input by the sewage treatment plant worker.
- a mechanism for selecting and inputting in a pull-down format may be provided. good. For example, a plurality of items indicating different addition rates for the manipulated quantity of "addition of flocculant polymer" may be prepared, and the value of the manipulated quantity may be input by appropriately selecting from these items. . Further, for example, the implementation result may be input by preparing items such as "improvement”, “no change", and “need to add” and selecting from these items as appropriate. .
- the operator of the sewage treatment plant can make decisions without relying on automatic input based on the selection of equipment operation details. , you can manually enter what you have done.
- the data (for example, the details of the equipment operation performed and the results thereof) entered in the "Implementation details" (screen I4) can be used, for example, for program settings, etc., as explained below.
- the amount of increase or decrease of the recommendation level here is appropriately set by the developer.
- the contents of the recommended operation displayed in the "operation instructions" item, the results of the recommended operation, the size and number of flocculated flocs, and the moisture content of the dried sludge are constructed as a database, and learning and analysis are performed.
- Repetition can be used to improve the accuracy of operation instruction content (that is, to output more accurate facility operation content). That is, a step of acquiring data on flocculated flocs and dewatered sludge after performing the recommended operation, a step of evaluating the goodness of the recommended operation using the acquired data, and a recommended operation according to the evaluation results.
- the step of varying the priority which is the recommended value
- the accuracy of the operation instruction content can be improved, and more accurate recommended operations can be output.
- the acquired data may be used to improve the accuracy of the value of the operation quantity displayed on the "operation instruction" screen I3. For example, if it is confirmed on the "Implementation Details" screen I4 that the implementation results (that is, the input contents of the second area A2) have been improved, the value of the operation quantity for the corresponding equipment operation details is changed. If it is confirmed from the implementation results that no improvement has been made, the value of the operation quantity for the corresponding equipment operation content is changed, thereby improving the accuracy of the value of the operation quantity. good too. In this way, it is possible to improve the accuracy of the value of the quantity to be manipulated from the quantity of the executed operation (the quantity entered on the input screen for the details of the execution).
- the desired numerical value is obtained without changing the value of the operation quantity. If it cannot be confirmed that the value has become a numerical value, a process of changing the value of the manipulated quantity may be performed.
- FIG. 20 shows an example of a screen for outputting implementation details.
- a confirmation screen I5 for output necessity is displayed as shown in FIG. After that, if you select the consent (OK), you can output information such as the operation recommended by the navigation system and the details performed by the sewage treatment plant worker based on the size and number of aggregated flocs and the measurement results of the moisture content. can.
- the content notifying that the output is completed is displayed along with the location where the output file is saved.
- the format of the output file in the example of screen I5 in FIG. 20, a CSV file is described, but the file format can be appropriately selected by the system creator.
- the set of output files can also be transmitted to the remotely controlled information processing device when the device is remotely controlled.
- the sewage treatment plant workers has a function to show the sewage treatment plant workers the information displayed on the screen, such as flocculation and water content prediction information. That is, display of data regarding future prediction may be performed. For example, data related to the predicted value of the time prior to the calculation of the moisture content of the dried sludge or the calculation of the size and number of flocculated flocs may be acquired and displayed on the "confirm status" screen I2. In this case, the displayed predicted value can be grasped and operated.
- the screen may also display data acquired by the control panel used for equipment monitoring and control. Also, an image acquired by imaging the control panel may be displayed on the screen. That is, a control panel camera that captures an image of the control panel may be provided, and monitoring values obtained by capturing an image of the control panel and performing image processing may be displayed on the screen. By referring to this monitoring value, the information of the control panel can be easily grasped.
- the monitoring values include, for example, the amount of chemicals added to the flocculation tank, the ratio of chemicals, the concentration and flow rate of sludge, the rotation speed of the agitator, the pressure of the dehydrator, and the like.
- the data used for numerical display may be obtained from the sensors used for monitoring and measuring each facility (for example, the sensors described above), or may be obtained from the control panel. If the control panel displays the desired state of agglomerated flocs, a captured image of the state of agglomerated flocs, a water content, or the like, the displayed value or information may be obtained by this method.
- the priority only needs to be able to appropriately evaluate the details of equipment operation, and may be anything other than a percentage value.
- the manipulated quantity may be indicated by an appropriate value, and may be other than a percentage value.
- the contents of the execution screen of the sewage sludge treatment facility operation support navigation system have been described above, but the words displayed may be appropriately replaced with words familiar to sewage treatment plant workers.
- the system described in the embodiment can also be used for sludge treatment plants other than sewage treatment, such as tap water treated using a flocculation tank and dehydrator, and industrial wastewater. good.
- Equipment operation procedures include equipment operation details. Then, the equipment operation content may be displayed on the display device by the processing of the processor. Further, the operation procedure display program may be used as an operation content display program.
- Sewage sludge treatment equipment operation support navigation system 101 Aggregation tank 102 Sludge dehydrator dewatering unit 103 Sludge dehydrator discharge unit 104 Sludge storage tank 105 Imaging device 106 Infrared measuring device 107 Imaging signal processing device 108 Infrared signal processing device 109 Computer (electronic computer ) 110 flocculation tank/sludge dewatering machine operation procedure display device (display device) 200 Sewage sludge treatment facility operation support navigation system 201 Communication network 301 Operation procedure display device screen (display screen) 401 Operation procedure display device screen (display screen) 402 Desired moisture content value (desired sludge moisture content) 403 moisture content regression line (regression line) 501 Operation procedure display device screen (display screen) 502 desired moisture content value (desired sludge moisture content) 503 Moisture content value (moisture content measurement value) 601 Operation procedure display device screen (display screen) 701 Operation procedure display device screen (display screen) 801
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Abstract
Description
101 凝集槽
102 汚泥脱水機脱水部
103 汚泥脱水機排出部
104 汚泥貯留槽
105 撮像装置
106 赤外線計測装置
107 撮像信号処理装置
108 赤外線信号処理装置
109 計算機(電子計算機)
110 凝集槽・汚泥脱水機操作手順表示装置(表示装置)
200 下水汚泥処理設備運転支援ナビゲーションシステム
201 通信ネットワーク
301 操作手順表示装置画面(表示画面)
401 操作手順表示装置画面(表示画面)
402 所望の含水率値(所望汚泥含水率)
403 含水率回帰直線(回帰直線)
501 操作手順表示装置画面(表示画面)
502 所望の含水率値(所望汚泥含水率)
503 含水率値(含水率計測値)
601 操作手順表示装置画面(表示画面)
701 操作手順表示装置画面(表示画面)
801 操作手順表示装置画面(表示画面)
1100 下水汚泥処理設備運転支援ナビゲーションシステム
1101 汚泥濃縮槽
1102 濃縮汚泥貯留槽
1103 凝集槽
1104 汚泥脱水機
1105 汚泥貯留槽
1106 温度センサ
1107 センサ(温度センサ、ガスセンサ)
1108 温度センサ
1109 温度センサ
1110 信号処理装置
1111 計算機(電子計算機)
1112 操作手順表示装置(表示装置)
1200 下水汚泥処理設備運転支援ナビゲーションシステム
1201 通信ネットワーク
1300 下水汚泥処理設備運転支援ナビゲーションシステム
1301 汚泥濃縮槽の操作盤
1302 濃縮汚泥貯留槽の操作盤
1303 凝集槽の操作盤
1304 汚泥脱水機の操作盤
1305 画像撮影機
1306 画像撮影機
1307 画像撮影機
1308 画像撮影機
1309 信号処理装置
1310 計算機(電子計算機)
1311 操作手順表示装置(表示装置)
1400 下水汚泥処理設備運転支援ナビゲーションシステム
1401 通信ネットワーク
I1 メニュー画面
I2 状況確認画面
I3 操作指示画面
I4 実施内容の入力画面
I5 実施内容の出力画面
Claims (28)
- プロセッサと、記憶資源と、表示装置と、を備え、
前記記憶資源には、
汚泥処理設備の凝集槽における所望する凝集フロック状態である所望凝集フロック状態と、
前記汚泥処理設備の汚泥脱水機から排出される脱水汚泥の所望する含水率である所望汚泥含水率と、
がデータとして記憶され、
前記プロセッサは、操作内容表示プログラムを実行することにより、
(1)前記汚泥処理設備の稼働時の凝集フロック状態である、稼働時フロック状態を取得し、
(2)前記汚泥処理設備の稼働時の脱水汚泥の含水率である、稼働時汚泥含水率を取得し、
(3)前記稼働時フロック状態、前記稼働時汚泥含水率、前記所望凝集フロック状態、および、前記所望汚泥含水率に基づいて、前記凝集槽と前記汚泥脱水機の設備操作内容を選択または生成し、
(4)前記設備操作内容を前記表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサと、前記記憶資源と、通信を行うためのインタフェースである通信部と、を備える電子計算機が構成されており、
前記電子計算機は、前記汚泥処理設備が設けられる汚泥処理場に設置されている、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサと、前記記憶資源と、通信を行うためのインタフェースである通信部と、を備える電子計算機が構成されており、
前記電子計算機は、前記汚泥処理設備が設けられる汚泥処理場とは異なる遠隔地に設置されており、
前記表示装置は、前記汚泥処理場に設置されている、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記表示装置に表示される前記設備操作内容は、
前記汚泥脱水機の脱水圧力を調整する手順と、
汚水中に高分子凝集剤の注入量を指定した高分子凝集剤を注入する手順と、
を含むことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記記憶資源には、
脱水汚泥の含水率を予測して算定するために用いる回帰直線のデータである回帰直線情報が記憶され、
前記回帰直線情報は、
既知の含水率の脱水汚泥に1200nm以上2500nm以下の波長範囲の赤外線を照射し、前記脱水汚泥を経時計測して取得する赤外線反射率に一次微分処理を行い、前記一次微分処理の結果に多変量回帰分析を実行することによって取得され、
前記プロセッサは、前記操作内容表示プログラムを実行することにより、
前記汚泥脱水機から経時で排出される脱水汚泥に1200nm以上2500nm以下の波長範囲の赤外線を照射し、前記脱水汚泥を経時計測して取得される赤外線反射率と、前記回帰直線情報と、を用いて、前記稼働時汚泥含水率を算出し、
前記稼働時汚泥含水率と、前記所望汚泥含水率と、に基づいて、前記設備操作内容を選択または生成する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項5に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記所望汚泥含水率は、範囲で示される、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項5に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記の既知の含水率の脱水汚泥は、60wt%以上90wt%未満の範囲の含水率を有しており、
前記所望汚泥含水率は、60wt%以上85wt%未満の範囲の含水率である、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
汚泥体積値算定プログラムを実行することにより、
前記脱水汚泥の体積値である汚泥体積値を算定し、算定した前記汚泥体積値を前記表示装置に表示し、
処分費用算定プログラムを実行することにより、
前記脱水汚泥の処分費用である汚泥処分費用を算定し、算定した前記汚泥処分費用を前記表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、予測表示プログラムを実行することにより、
前記汚泥脱水機の稼働時間に対する前記脱水汚泥の体積値である汚泥体積値の予測と、前記脱水汚泥の処分費用である汚泥処分費用の予測と、を行う、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、予測表示プログラムを実行することにより、
前記汚泥脱水機の稼働時間に対する前記脱水汚泥の体積値である汚泥体積値の予測と、前記脱水汚泥の処分費用である汚泥処分費用の予測と、を行い、
予測した前記汚泥処分費用を前記表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項9に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、前記予測表示プログラムを実行することにより、
年間の前記汚泥処分費用を予測して、予測した年間の前記汚泥処分費用を前記表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記所望凝集フロック状態は、
汚水中に凝集する凝集フロックを既定の面積範囲で経時で画像計測し、取得した画像情報に対して凝集フロックの部分を明確にして凝集フロックの面積である凝集フロック面積を算出する画像処理を行って取得され、
前記所望凝集フロック状態は、
前記凝集フロック面積を階級として凝集フロックの個数を度数とするヒストグラムであり、
前記稼働時フロック状態は、
前記汚泥処理設備の稼働時に、汚水中に凝集する凝集フロックを既定の面積範囲で経時で画像計測し、取得した画像情報に前記画像処理を行って取得され、
前記稼働時フロック状態は、
凝集フロック面積を階級として凝集フロックの個数を度数とするヒストグラムであり、
前記プロセッサは、前記操作内容表示プログラムを実行することにより、
前記稼働時フロック状態と、前記所望凝集フロック状態と、に基づいて、前記設備操作内容を選択または生成し、
前記稼働時フロック状態のヒストグラムと、前記設備操作内容と、を前記表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項12に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記画像情報における凝集フロックが、1mm以上で50mm以下の長さ範囲の凝集体である、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
汚泥処理設備は、前記脱水汚泥に関する温度を計測する温度センサ、および/または、前記脱水汚泥の周辺の湿度を計測する湿度センサを備え、
前記プロセッサは、前記操作内容表示プログラムを実行することにより、
前記温度センサおよび/または前記湿度センサから取得するデータを用いて、前記設備操作内容を選択または生成する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
制御盤を撮像して画像処理することによりモニタリング値を取得する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記表示装置は、設備操作内容の表示後にユーザが前記設備操作内容を入力するための画面を表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
ユーザによる実際の設備操作内容を入力または選択する第1エリアと、
前記設備操作内容を実施した結果の良否を入力または選択する第2エリアと、
実施時間を入力する第3エリアと、を有する画面を前記表示装置に表示させる、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項16に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
入力または選択された設備操作内容に関する情報を利用して、前記設備操作内容を推奨する値である優先度を求める、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項17に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
入力または選択された設備操作内容に関する情報を利用して、前記設備操作内容を推奨する値である優先度を求める、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項1に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
脱水汚泥の含水率の算出時点、または、凝集フロックに関するデータの算出時点より、先の時間の予測値を取得し、
前記表示装置は、取得した前記予測値を表示する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項18に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
実施する対象の設備操作内容を表示する画面で設備操作内容の特定を受信し、
受信した設備操作内容に関する操作項目および操作数量を特定し、
特定した操作項目および操作数量を、ユーザによる実際の設備操作内容を入力または選択する第1エリアに入力する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項19に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
実施する対象の設備操作内容を表示する画面で設備操作内容の特定を受信し、
受信した設備操作内容に関する操作項目および操作数量を特定し、
特定した操作項目および操作数量を、前記第1エリアに入力する、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項16に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
入力または選択された設備操作内容に関する情報を利用して、推奨する前記設備操作内容の操作数量を求める、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 請求項17に記載の汚泥処理設備運転支援ナビゲーションシステムであって、
前記プロセッサは、
入力または選択された設備操作内容に関する情報を利用して、推奨する前記設備操作内容の操作数量を求める、
ことを特徴とする汚泥処理設備運転支援ナビゲーションシステム。 - 電子計算機を用いる汚泥処理設備運転支援方法であって、
(1)汚泥処理設備の稼働時の凝集フロック状態である、稼働時フロック状態を取得し、
(2)前記汚泥処理設備の稼働時の脱水汚泥の含水率である、稼働時汚泥含水率を取得し、
(3)前記稼働時フロック状態、前記稼働時汚泥含水率、前記汚泥処理設備の凝集槽における所望する凝集フロック状態である所望凝集フロック状態、および、前記汚泥処理設備の汚泥脱水機から排出される脱水汚泥の所望する含水率である所望汚泥含水率に基づいて、前記凝集槽と前記汚泥脱水機の設備操作内容を選択または生成し、
(4)前記設備操作内容を表示装置に表示する、
ことを特徴とする汚泥処理設備運転支援方法。 - 請求項25に記載の汚泥処理設備運転支援方法であって、
前記汚泥処理設備が設けられる汚泥処理場とは異なる遠隔地において電子計算機を用いて、
前記稼働時フロック状態および前記稼働時汚泥含水率を、通信を介して取得し、
前記凝集槽と前記汚泥脱水機の設備操作内容を選択または生成し、
前記汚泥処理場内に設けられる前記表示装置に、通信を介して、前記設備操作内容を表示させる、
ことを特徴とする汚泥処理設備運転支援方法。 - 請求項25に記載の汚泥処理設備運転支援方法を電子計算機に実行させるプログラム。
- 請求項26に記載の汚泥処理設備運転支援方法を電子計算機に実行させるプログラム。
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