JP2009108593A - Apparatus for exchange and effective use of water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide operational rules of a transportation device like a water exchange pump taking operational capacity of the transportation device like the pump into consideration. <P>SOLUTION: The apparatus for exchange and effective use of water comprises a cost computing means 8 to compute a cost for each treatment plant based on an inflow amount to the treatment plant as an input datum, a transportation device operable pattern determining means 7 determining the pattern enabling the exchange water transportation device installed in each treatment plant to operate based on the inflow amount, maximum treatable water amount and detected abnormality information, a transportation device operation pattern determining means 9 adopting the operation pattern when there is no other choice than a single transportation device operable pattern, and determining an operation pattern of the exchange water transportation device by which the computed cost is minimized when there is a plurality of options of the operation pattern, and a sewage treatment method determining means 10 conducting normal treatment when the inflow amount to each treatment plant upon operation of the exchange water transportation device according to the transportation device operation pattern does not exceed the maximum treatable water amount of each treatment plant, and conducting discharge after simple treatment or direct discharge when it exceeds the maximum treatable water amount. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an operation apparatus for a plurality of sewage treatment plants in which two or more sewage treatment plants are connected by a connecting pipe to form a network, and a transportation device (pump) that performs water interchange between the plurality of treatment plants. And the like).

  Conventionally, sewage treatment plants have been operated so that the quality standards of discharged water can be maintained at each treatment plant unit. On the other hand, in recent years, from the viewpoint of avoiding risks in the event of an earthquake or the like, facilitating facility renewal, etc., plans are being made to connect each treatment plant by a connecting pipe to form a network. In the following, there is no particular distinction between a state in which facilities cannot be used due to an earthquake or the like and a state in which facilities cannot be used due to facility renewal. These differences are due to whether the cause is non-artificial, such as an earthquake disaster, or artificial, such as facility renewal. From the viewpoint that the treatment facility is temporarily unavailable It is the same state. In addition, since the facility update is different from the normal state that occurs temporarily, it may be considered as a kind of abnormal state in a broad sense.

  In the “Processing Network Networking Concept” in which each processing plant is networked by connecting pipes, management decision-making operations can be integrated in addition to risk avoidance as public investment in sewage treatment plants is reduced. Cost reductions such as reduction of maintenance costs by consolidating treated water, reduction of spare machines for pumps and blowers, consolidation of facilities, and reduction of equipment introduction costs and construction costs through planned facility upgrades are also expected. In addition, the quality of the discharged water may be deteriorated due to a decrease in treatment function or simple discharge during heavy rain, or 60% or more of the river flow rate may be treated as sewage treatment water during drought. In this case, since the discharged water from a plurality of treatment plants usually flows into the discharge destination river, it is expected that the network can avoid such deterioration of the discharged water quality and river water quality, and maintain and improve the water quality.

  In short, the main effects expected for networking of treatment plants are: (1) risk avoidance / reduction in case of abnormalities, (2) cost reductions such as maintenance costs and construction costs, and (3) clear and rainy weather. Three points are the maintenance and improvement of river water quality. In order to specifically avoid this risk, reduce costs, and maintain and improve water quality, it is necessary to determine how water should be interchanged between multiple treatment plants through connecting pipes. However, this specific implementation method is not clear except for obvious cases that occur irregularly, such as in the case of risk avoidance in case of an abnormality such as an earthquake disaster, and the most effective operation method from the above three viewpoints is not necessarily the case. It is not established. In the event of a process abnormality due to an earthquake disaster or poisonous contamination, the maximum amount may be accommodated from the processing site where the abnormality occurred to a normal processing site. In addition, if a certain treatment plant cannot be used temporarily due to equipment renewal, etc., the maximum amount can be accommodated in a treatment plant that can use the inflow sewage of the treatment plant that cannot be used. It's almost obvious.

  On the other hand, the inventors of the present application have previously devised a water interchange operation method considering cost reduction and water quality maintenance (Japanese Patent Laid-Open No. 2006-334480, “Sewage Treatment Plant Control Device”, hereinafter, Patent Document 1). ).

In the invention described in Patent Document 1, a plurality of water interchange methods are devised to achieve cost reduction and discharge load reduction.
JP 2006-334480 A

  However, only the water accommodation method proposed in Patent Document 1 cannot realize a method of water accommodation using a water accommodation pump or the like actually installed in the connecting pipe. This is because, in order to actually carry out water accommodation, it is necessary to construct a specific implementation method (≈operation rule) in consideration of the following points.

  That is, in the invention of Patent Document 1, a method for determining the distribution amount of inflowing sewage to each treatment plant is devised, but specific water accommodation that achieves this distribution amount is not always realized. . This is because the amount of water that can be specifically accommodated is limited by the transport capacity and operational conditions of transport equipment such as a pump that actually performs water interchange.

  In Patent Document 1, the concept of a processing cost per unit processing amount or unit load amount as an index for quantitatively measuring costs and a contaminant removal rate as an index for maintaining and improving water quality are introduced. And the method of determining the accommodation method based on the quality of the processing cost per unit amount or the removal rate is proposed. However, the processing cost and removal rate per unit amount of a certain processing plant (processing plant A) and another processing plant (processing plant B) are not always constant, and the magnitude relationship may not be constant. In other words, it is not a simple relationship such as “processing cost of processing plant A <processing cost of processing plant B” or “processing cost of processing plant A> processing cost of processing plant B”. It can happen that the magnitude relationship changes. A specific example is shown in the embodiment. Therefore, it is necessary to determine an operation method in consideration of processing costs and removal rates in a situation that changes from moment to moment.

  Patent Document 1 discloses a water accommodation method for achieving cost reduction and / or improvement of discharged water quality / river water quality, but water accommodation method for risk avoidance at the time of abnormality, which is the purpose of networking treatment plants Is not disclosed. As mentioned above, in the networking of treatment plants, it is necessary to consider risk avoidance, cost reduction, water quality maintenance / improvement at the same time, and what purpose (risk avoidance, cost reduction, water quality maintenance / improvement) among these is what It is necessary to decide whether to give priority to the case in case of water accommodation, or how to specifically incorporate these objectives into the operation method for water accommodation. Patent Document 1 does not disclose any handling in the event of an abnormality, and only discloses that a comprehensive evaluation index is introduced for both cost reduction and water quality maintenance improvement.

  Patent Document 1 discloses a method for determining the distribution amount of inflow sewage to each treatment plant even when an excessive inflow that exceeds the planned water amount occurs, but the treatment method at each distributed treatment plant is disclosed. Is not mentioned. In actual treatment plant operation, it is necessary to determine the treatment method when inflow occurs when the planned water volume is exceeded.

  Taking the above into consideration and deriving from the concept of “operating concept of water accommodation” to the actual operation rule of “operating method of pumps and other equipment that carry out water accommodation” is merely a design matter. It is not an obvious matter, but an important development issue for concretely realizing the effects of networking the treatment plant.

  The present invention has been made in view of the above circumstances, and has devised an operation rule for a transport device such as a water accommodation pump in consideration of the operation capability of the transport device such as a pump (maximum transport amount, rated flow rate, number of operation, etc.). It is aimed.

  Also, water interchange that proposes operational rules for transportation equipment such as water accommodation pumps that take into account the operating costs and / or the quality of the discharged water / river water that changes with dynamic conditions that change from moment to moment, such as inflow and inflow load. The purpose is to provide operational equipment.

  Furthermore, the purpose is to provide a water interchange operation device that proposes operation rules for transportation equipment such as water accommodation pumps that take into account all three objectives of risk avoidance, cost reduction, and water quality maintenance and improvement. .

  Furthermore, it aims at providing the water accommodation operation apparatus which proposes the operation rule of transport equipment, such as a water accommodation pump in consideration of the treatment method when the amount of water more than a plan water quantity (maximum treatment amount) flows.

  In order to achieve the above object, the present invention connects the treatment plants to each other through a connecting pipe, and installs a predetermined number of units, and an interchangeable water transportation device having a predetermined transportation capacity in each treatment plant, A water interchange operation device for a treatment plant group configured to perform mutual water interchange between the treatment plants through the connecting pipe using these interchangeable water transport devices, and each of the treatment plants A maximum treatable water amount determining means for determining the maximum possible water amount, an inflow amount calculating means for determining an inflow amount to each treatment plant, and an inflow amount obtained by the inflow amount calculating means as at least one input at each treatment plant. A cost calculating means for determining a cost, an abnormality detecting means for detecting various abnormalities occurring in each treatment plant and generating abnormality information, an inflow amount determined by the inflow amount calculating means, and a maximum water volume determining unit that can be processed The transportable device operable pattern determining means for determining the operable pattern of the interchangeable water transport equipment installed in each treatment plant based on the maximum treatable water amount determined by the abnormality detection information and the abnormality information detected by the abnormality detecting means. If the transport equipment operable pattern determined by the transport equipment operable pattern is uniquely determined, it is used as the operation pattern, and when the transport equipment operable pattern is not uniquely determined and a plurality of operation patterns can be selected. , Transportation device operation pattern determination means for determining the operation pattern of the flexible water transport device that minimizes the cost calculated by the cost calculation means, and each case where the flexible water transport device is operated by the transport device operation pattern If the inflow to the treatment plant does not exceed the maximum water volume that can be treated in each treatment plant, normal treatment is performed. If that is characterized by having a wastewater processing method determination means for performing discharge or direct discharge after a simple processing.

  In this case, the inflow amount calculating means obtains at least one of an inflow amount measurement value obtained by a sensor for measuring the inflow amount to the treatment plant or an inflow amount prediction value obtained by an inflow amount prediction device for predicting the inflow amount. The cost calculating means estimates the flow rate / flow rate of the blower or pump of the treatment plant with at least one input of the measured flow rate value or the predicted flow rate value calculated by the flow rate calculation means, The operating cost calculating means for calculating the sum of the operating costs of these devices, or the flow rate of the blower or pump of the treatment plant with at least one input of the measured inflow amount or the predicted inflow amount obtained by the inflow amount calculating means.・ Estimate airflow, measured inflow or predicted inflow, and estimated flow rate and airflow of various devices, and pollutant concentration of discharged water The water quality cost calculating means for calculating the water quality cost obtained by estimating the discharged load amount expressed by the discharged water amount and converting the discharged pollution load to the amount of money, or the operating cost obtained by the operating cost calculating means and the water quality calculating means A total cost calculating means for calculating a total cost which is a sum of the water quality costs obtained.

  Further, according to another aspect of the present invention, the treatment plants are connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transport capacity is installed in each treatment plant. A water interchange operation device for a treatment plant group configured to perform water interchange between each treatment plant through the connection pipe using a flexible water transport device, and capable of processing each treatment plant maximum Maximum processable load determination means for determining the load (= water volume x pollutant concentration), inflow calculation means for determining the inflow to each treatment plant, and inflow pollution for determining the concentration of the pollutant flowing into each treatment plant The inflow for obtaining the inflow load amount (= inflow amount × inflow pollutant concentration) from the inflow amount obtained by the inflow amount calculating means and the inflow amount obtained by the inflow amount calculating means and the inflow pollutant concentration determined by the inflow pollutant concentration calculating means. Load amount calculating means and the inflow negative Cost calculating means for obtaining the cost at each processing plant with the inflow load obtained by the load calculating means as at least one input, and an abnormality detecting means for detecting various abnormalities occurring at each processing plant and generating abnormality information , Each processing based on the inflow load amount determined by the inflow load amount calculation means, the maximum processable load amount determined by the maximum processable load amount determination means, and the abnormality information generated by the abnormality detection means A transport device operable pattern determining means for determining an operable pattern of an interchangeable water transport device installed on the site, and if the transport device operable pattern is uniquely determined, it is used as an operation pattern, and the transport device can be operated. If the pattern is not uniquely determined and a plurality of operation patterns can be selected, the cost calculated by the cost calculating means is the highest. The transportation device operation pattern determining means for determining the operation pattern of the flexible water transport device, and the amount of inflow into each treatment plant when the flexible water transport device is operated by the transport device operation pattern is as follows. A normal treatment is performed when the maximum load capacity that can be treated is not exceeded, and a wastewater treatment method determining means that discharges after the simple treatment or directly discharges when the load exceeds the maximum treatable load amount.

  In this case, the inflow amount calculating means obtains at least one of an inflow amount measurement value obtained by a sensor for measuring the inflow amount to the treatment plant or an inflow amount prediction value obtained by an inflow amount prediction device for predicting the inflow amount. The inflowing pollutant concentration calculating means is at least a pollutant concentration measured value obtained by a sensor that measures the concentration of the pollutant flowing into the treatment plant, or a predicted pollutant concentration value obtained by the pollutant concentration predicting device. The cost calculating means estimates the air flow rate / flow rate of the blower or pump of the treatment plant with at least one input of the inflow load amount determined by the inflow load amount calculating means, and these devices Operating cost calculating means for calculating the sum of the operating costs of the inflow, or the inflow obtained by the inflow load amount calculating means Estimate the flow rate and air volume of the blower and pump at the treatment plant with the load as at least one input. From the calculated inflow load and the estimated flow rate and air volume of various equipment, the pollutant concentration of the discharged water x the amount of discharged water The water quality cost calculating means for calculating the water quality cost obtained by estimating the discharge load amount represented by the formula and converting the discharged pollution load to the amount of money, or the operation cost determined by the operation cost calculating means and the water quality calculating means One of the total cost calculation means for calculating the total cost that is the sum of the water quality costs.

Further, in another aspect of the present invention, the treatment plants are connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transport capacity is installed in each treatment plant. A water storage tank for temporarily storing inflow water in each treatment plant, while being configured to perform mutual water exchange between the treatment plants through the connecting pipe. A substitute storage tank such as a non-operating reaction tank or a non-operating settling basin, and a storage water return transport equipment with a predetermined number and a predetermined transport capacity are installed, and storage using this stored water return transport equipment A water interchange operation device for a treatment plant group configured to send back the stored water stored in the bath to the treatment bath, and a maximum treatable water amount determining means for determining the maximum treatable water amount for each treatment plant; , Inflow calculation to find the inflow to each treatment plant And an inflow amount obtained by the inflow amount calculating means as at least one input, a cost calculating means for obtaining a cost, and an abnormality detecting means for detecting various abnormalities occurring in each treatment plant and generating abnormality information From the storage amount calculation means for obtaining the storage amount stored in the stored water of each treatment plant, the inflow amount calculation means, the maximum treatable water amount determination means, the abnormality detection means, and the storage amount calculation means, Transportation device operable pattern determining means for determining an operable pattern of the interchangeable water transportation device and the stored water return transportation device installed in the treatment plant, and when the transportation device operational pattern is uniquely determined, the operation pattern If the transport device operation possible pattern is not uniquely determined and a plurality of operation patterns can be selected, the cost calculated by the cost calculation means is the minimum. The transportation device operation pattern determining means for determining the operation pattern of the transportation device, and the inflow amount to each treatment plant when the interchangeable water transportation device is operated by the transportation device operation pattern is the maximum processable amount of each treatment plant. When the amount of water Q ^max _i (i = 1,..., M) is not exceeded, normal processing is performed. When the amount of water is exceeded, the water is stored in the storage tank and then the storage tank volume is exceeded. It has a sewage treatment method determining means for direct discharge.

  In this case, the inflow amount calculating means obtains at least one of an inflow amount measurement value obtained by a sensor for measuring the inflow amount to the treatment plant or an inflow amount prediction value obtained by an inflow amount prediction device for predicting the inflow amount. The cost calculating means estimates the flow rate / flow rate of the blower or pump of the treatment plant with at least one input of the measured flow rate value or the predicted flow rate value calculated by the flow rate calculation means, The operating cost calculating means for calculating the sum of the operating costs of these devices, or the flow rate of the blower or pump of the treatment plant with at least one input of the measured inflow amount or the predicted inflow amount obtained by the inflow amount calculating means.・ Estimate airflow, measured inflow or predicted inflow, and estimated flow rate and airflow of various devices, and pollutant concentration of discharged water The water quality cost calculating means for calculating the water quality cost obtained by estimating the discharged load amount expressed by the discharged water amount and converting the discharged pollution load to the amount of money, or the operating cost obtained by the operating cost calculating means and the water quality calculating means A total cost calculating means for calculating a total cost which is a sum of the water quality costs obtained.

  Further, in another aspect of the present invention, the treatment plants are connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transport capacity is installed in each treatment plant. A water storage tank for temporarily storing inflow water in each treatment plant, while being configured to perform mutual water exchange between the treatment plants through the connecting pipe. A surrogate storage tank such as a non-operating reaction tank or a non-operating settling basin, and a storage water return transport device with a specified number of units and a predetermined transport capacity are installed and stored using this stored water return transport device. It is a water interchange operation device for the treatment plant group configured to send the stored water stored in the treatment tank back to the treatment vessel, and the maximum load capacity (= water amount × contaminant concentration) that can be treated for each treatment plant. Maximum processable load determination means to be determined and each treatment plant An inflow amount calculating means for determining the inflow amount of inflow, an inflow pollutant concentration calculating means for determining the concentration of pollutant flowing into each treatment plant, an inflow amount obtained by the inflow amount calculating means and an inflowing pollutant concentration calculating means Inflow load amount calculating means for obtaining an inflow load amount (= inflow amount × inflow pollutant concentration) from the determined inflow pollutant concentration, and the inflow load amount obtained by the inflow load amount calculating means as at least one input Cost calculation means for obtaining costs at the treatment plant, abnormality detection means for detecting various abnormalities occurring at each treatment plant and generating abnormality information, and storage amount computation for obtaining the storage amount stored in the stored water at each treatment plant A storage load amount calculated from the storage means, the stored pollutant concentration calculating means for obtaining the pollutant concentration of the stored water in each treatment plant, the stored amount calculating means and the stored pollutant concentration calculating means (= Storage load amount calculating means for calculating (distillate × storage pollutant concentration), inflow load amount obtained by the inflow load amount calculating means, maximum processable load amount determined by the maximum processable load amount determining means, Operation of each of the interchangeable water transport equipment and the stored water return transport equipment installed in each treatment plant based on the abnormality information generated by the abnormality detection means and the storage load amount obtained by the storage load amount calculation means Transport device operable pattern determining means for determining a proper pattern, and when the transport device operable pattern is uniquely determined, it is set as an operation pattern, and the transport device operable pattern is not uniquely determined and a plurality of operation patterns are selected. If possible, the flexible water transport equipment and the stored water return transport equipment that minimize the cost calculated by the cost calculation means. The transportation device operation pattern determining means for determining each operation pattern, and the inflow amount to each treatment plant when the interchangeable water transportation device is operated by the transportation device operation pattern does not exceed the maximum load capacity that can be handled by each treatment plant. A wastewater treatment method determining means for performing discharge after simple treatment or direct discharge when the storage tank volume is exceeded after storage in the storage tank is performed. It is said.

  In this case, the inflow amount calculating means obtains at least one of an inflow amount measurement value obtained by a sensor for measuring the inflow amount to the treatment plant or an inflow amount prediction value obtained by an inflow amount prediction device for predicting the inflow amount. The inflowing pollutant concentration calculating means is at least a pollutant concentration measured value obtained by a sensor that measures the concentration of the pollutant flowing into the treatment plant, or a predicted pollutant concentration value obtained by the pollutant concentration predicting device. The cost calculating means estimates the air flow rate / flow rate of the blower or pump of the treatment plant with at least one input of the inflow load amount determined by the inflow load amount calculating means, and these devices Operating cost calculating means for calculating the sum of the operating costs of the inflow, or the inflow obtained by the inflow load amount calculating means Estimate the flow rate and air volume of the blower and pump at the treatment plant with the load as at least one input. From the calculated inflow load and the estimated flow rate and air volume of various equipment, the pollutant concentration of the discharged water x the amount of discharged water The water quality cost calculating means for calculating the water quality cost obtained by estimating the discharge load amount represented by the formula and converting the discharged pollution load to the amount of money, or the operation cost determined by the operation cost calculating means and the water quality calculating means One of the total cost calculation means for calculating the total cost that is the sum of the water quality costs.

  The main effects of the present invention are as follows.

Considering the operation capacity of pumps and other transport equipment (maximum transport volume, rated flow rate, number of units in operation, etc.)
(2) Considering the operating costs and discharge water quality / river water quality that change with conditions such as inflow and inflow load that dynamically change from time to time, and (3) risk avoidance in case of abnormalities, operation costs Specific water interchange operation that incorporates the main objectives of three water interchanges, namely, reduction of water quality, maintenance and improvement of discharge water quality and river water quality. Furthermore, a specific effective treatment procedure can be executed even when the amount of water exceeding the maximum treatment amount flows in each treatment plant.

<First Embodiment>
<< Configuration of First Embodiment >>
The configuration of the first embodiment is shown in FIG. In Figure 1, consider two treatment plants A and B, each N _A block and N _B block water flexible pump is installed. Note that the present invention is not limited to the two treatment plants A and B, and may have a configuration in which three or more treatment plants are connected to each other.

  As shown in FIG. 1, a river basin treatment plant group 1, a process data collection / storage unit 2 that collects and stores process data from the river basin treatment plant group 1, and a maximum amount of water that can be treated in each treatment plant A maximum processable water amount determination means 3 to be determined, a cost calculation parameter setting means 4 for setting a parameter for calculating a processing cost, and an inflow amount calculation means 5 for calculating an inflow amount according to the operating conditions of the water interchangeable pump. , An abnormality detecting means 6 for detecting abnormality of the process and generating abnormality information, a transport apparatus operable pattern determining means 7 for extracting an operation pattern that can actually operate the water interchangeable pump, and a water interchangeable pump operation pattern The cost calculation means 8 for calculating a predefined cost and the operation pattern that minimizes the calculated cost as the actual water interchange pump operation pattern The transportation equipment operation pattern determination means 9 for selection, and a wastewater processing method determination means 10 for determining a processing method of sewage flowing.

A treatment plant 1A1 is located on the left bank of a river, and water is interchanged between A drainage zone 1A2 targeted by A treatment plant and A treatment plant 1A1 and B treatment plant 1B1 on the opposite bank. Connecting pipe connecting part 1A3, A → B connecting pipe 1A4 connected to this connecting pipe connecting part 1A3 to send water to the opposite B treatment plant, and connecting pipe connecting part 1A3 or A → B connection installed in the tube 1A4, each _{^{Q trAB i (i = 1,}} ..., N a) with a rated capacity of, and _{N a} stand a → B water flexible pump 1A5, measure the inflow amount flowing in the a treatment plant Process A inflow sensor 1A6, process sensor abnormality detection process sensor 1A7 for measuring a process variable for detecting an abnormality occurring in the process A, and process A for measuring the concentration of sludge extracted from the process A Field surplus sludge concentration sensor 1A8 and A A treatment plant blower / pump flow sensor 1A9 for measuring the flow rate (air flow) of blower pump equipment such as a blower, return pump, pumping pump, circulation pump, excess sludge extraction pump, water interchange pump, etc. .

Further, the B treatment plant 1B1 is located on the opposite bank (right bank) of the A treatment plant 1A1 across the river, and the B wastewater treatment area 1B2 targeted by the B treatment plant and the treatment plant on the opposite bank (A treatment plant 1A1). ), A connecting pipe coupling part 1B3 for allowing water to be mutually exchanged, a B → A connecting pipe 1B4 connected to the connecting pipe coupling part 1B3 and for sending water to the A treatment plant on the opposite bank, and a connecting pipe binding portion 1B3 or B → a is installed in connection pipe 1B4, each _{^{Q trBA i (i = 1,}} ..., N B) with a rated capacity of, and _{N B} stand B → a water flexible pump 1B5, B treated B process field inflow sensor 1B6 for measuring the amount of inflow flowing into the field, B process field abnormality detection process sensor 1B7 for measuring process variables for detecting an abnormality occurring in the B process field, and extraction from the B process field B treatment plant surplus sludge is measured 1B8, B treatment plant blower pump flow sensor that measures the flow rate (air flow) of blower pump equipment such as B treatment plant blower, return pump, pumping pump, circulation pump, excess sludge extraction pump, water interchange pump 1B9.

  The process data collection / storage unit 2 includes a process online measurement data collection / storage unit 21 and a process information data collection / storage unit 22. The process on-line measurement data collection / storage unit 21 measures the A treatment plant inflow sensor 1A6, the A treatment plant abnormality detection process sensor 1A7, and the A treatment which are measured at each treatment plant of the river basin treatment plant group 1. B treatment plant excess sludge concentration sensor 1A8, B treatment plant blower pump flow sensor 1A9, B treatment plant inflow sensor 1B6, B treatment plant abnormality detection process sensor 1B7, B treatment plant surplus sludge concentration sensor 1B8, B Various process data measured by the processing field blower / pump flow sensor 1B9 are collected at a predetermined cycle and stored according to a predetermined format. The process information data collection / storage unit 22 collects and stores data that can be collected offline regarding processes such as the civil structure of the process.

  The processable maximum water amount determination means 3 includes at least the inflow amount data of each treatment plant measured by the process A inflow amount sensor 1A6 and the B treatment site inflow amount sensor 1B6 stored in the process online measurement data collection / storage unit 21. The maximum amount of water that can be treated in each treatment plant is determined using the civil engineering structure information of the process saved in the process information data collection / storage unit 22.

  The cost calculation parameter setting means 4 sets parameters necessary for calculating the cost from various process data stored in the process online measurement data collection / storage unit 21.

  Whether the inflow amount calculation means 5 directly uses the inflow amount data of each processing field measured by the A processing field inflow amount sensor 1A6 and the B processing field inflow amount sensor 1B6 stored in the process online measurement data collection / storage unit 21. Alternatively, the inflow amount corresponding to all possible operation conditions of the water accommodation pump is calculated using the predicted inflow amount using these.

  The abnormality detection means 6 detects a process abnormality by using the information of the process A abnormality detection process sensor 1A7 and the process B abnormality detection process sensor 1B7 stored in the process online measurement data collection / storage unit 21. To generate anomaly information.

  The transport device operable pattern determining means 7 is based on the inflow amount corresponding to all possible water interchange pump operating conditions calculated by the inflow amount calculating means 5 and the abnormality information generated by the abnormality detecting means 6. Extract the operation patterns of water interchangeable pumps that can actually be operated.

  The cost calculation means 8 includes the various parameters necessary for the cost calculation set by the cost calculation parameter setting means 4 and the inflow amount according to all possible water interchange pump operating conditions calculated by the inflow amount calculation means 5. From the above, a predefined cost is calculated for the water interchange pump operation pattern corresponding to the operable pattern determined by the transport device operable pattern determining means 7.

  The transportation device operation pattern determination means 9 selects an operation pattern that minimizes the cost calculated by the cost calculation means 8 from among the operation patterns of the operable water accommodation pump determined by the transportation device operation pattern determination means 7. Select the actual operation pattern of the water interchange pump.

  The sewage treatment method determining means 10 is a method for treating the inflowing sewage based on the assumed inflow amount to the A treatment plant 1A1 and the B treatment plant 1B1 according to the operation pattern determined by the transport equipment operation pattern decision device 9. To decide.

<< Operation of First Embodiment >>
Next, the operation of the first embodiment will be described with reference to FIG.

  A treatment plant inflow sensor 1A6 and B treatment plant inflow sensor 1B6 installed in each treatment plant (A treatment plant and B treatment plant) of the river basin treatment plant group 1 The inflow amount is measured, and this measurement data is recorded in the process online measurement data collection / storage unit 21 in a predetermined format.

  Similarly, information on the abnormality of each treatment plant is measured at a predetermined cycle by the process sensor 1A7 for detecting the treatment plant abnormality 1A7 and the process sensor 1B7 for detecting the treatment plant abnormality B installed in each treatment plant. Is recorded in the process online measurement data collection / storage unit 21 in a predetermined format. The process A abnormality detection process sensor 1A7 and the process B abnormality detection process sensor 1B7 may be specific sensors for detecting a specific abnormality, or may be abnormal through a certain process from a plurality of sensors. It may be a device that performs detection. A specific example of the former is a respiration rate meter for measuring the activity of microorganisms in a sewage treatment process. This respiration rate meter measures the activity of microorganisms and incorporates logic to determine that an abnormality has occurred in the processing process when the respiration rate falls below a predetermined threshold or when the respiration rate continues to decrease It is.

  A plurality of sensors that can detect such an abnormality are provided, and a logical sum of the abnormality detected by these sensors may be defined as an abnormality detection sensor. Specific examples of the latter are proposed in Japanese Patent Application No. 2005-249816 “Process Monitoring Device and Method” and Japanese Patent Application No. 2006-139222 “Process Abnormality Diagnosis Device and Process Abnormality Diagnosis Service Providing Device” (not disclosed). As described above, an abnormality diagnosis algorithm that processes statistical data such as multivariate analysis and signal processing techniques such as wavelet transform into the time series data of processes measured by online sensors is incorporated into the data for abnormality diagnosis. It may be. In this case, the process sensor 1A7 for detecting the process A abnormality and the process sensor 1B7 for detecting the process B abnormality are not necessarily the only sensors, but use a plurality of online sensor information installed in the process. It will be a thing. In this way, the process A abnormality detection process sensor 1A7 and the process B abnormality detection process sensor 1B7 have one or more sensors for detecting an abnormality and logic for detecting an abnormality as necessary. (Algorithm) is incorporated, and information on the presence or absence of abnormalities that may occur in the process is provided online.

  Similarly, in the A treatment plant surplus sludge concentration sensor 1A8 and the B treatment plant surplus sludge concentration sensor 1B8 installed in each treatment plant, the sludge concentration (SS concentration) contained in the surplus sludge in each treatment plant is determined at a predetermined cycle. This is measured and recorded in the process online measurement data collection / storage unit 21 in a predetermined format.

  Exactly in the same way, the B treatment plant blower pump flow sensor 1A9 and the B treatment plant blower pump flow sensor 1B9 have a blower, a return pump, a pump, a circulation pump, a surplus sludge extraction pump, and a water interchange pump for each treatment plant. The flow rate and the air volume of a blower pump device such as the above are measured at a predetermined cycle, and this is recorded in the process online measurement data collection / storage unit 21 in a predetermined format. Normally, the A treatment plant blower / pump flow sensor 1A9 and the B treatment plant blower / pump flow sensor 1B9 are individually installed in each pump and blower. It consists of sensors.

  On the other hand, in the process information data collection / storage unit 22, the civil engineering structure data (reaction tank volume), the planned water volume, the planned residence time, the water area load of the settling basin, the operation result data on the day-to-day test, the water quality Data, such as process physical information, typical operating conditions, and typical water quality information are collected and stored in a predetermined format. These data are not measurement data usually obtained online, but are information obtained on the basis of surveys and the like offline.

  The process data collection / storage unit 2 is a combination of the process online measurement data collection / storage unit 21 and the process information data collection / storage unit 22, and the procedure described above is the operation.

Next, the maximum treatable water amount determination means 3 is supplied from the process online measurement data collection / storage unit 21 based on the civil engineering structure data supplied from the process information data collection / storage unit 22 or the like, if necessary. The maximum amount of water Q ^max _i (i = A, B) that can be treated at each treatment plant is determined using the inflow data of each treatment plant. As a method of determining the maximum amount of water, for example, it can be determined by the following method.

  (a) The planned water volume is taken as the maximum water volume that can be treated.

  (b) From the plant operation results data up to now, the limit water volume that can achieve the water quality standard of discharged water quality is set as the maximum water volume that can be treated.

  (c) The maximum allowable water area load is calculated, and the amount of water that gives that value is taken as the maximum water volume that can be treated.

  (d) The maximum allowable residence time (HRT) is calculated, and the amount of water that gives that value is taken as the maximum amount of water that can be treated.

  (e) The maximum allowable aerobic tank residence time (A-HRT) is calculated, and the amount of water giving the value is defined as the maximum treatable water amount.

  (f) The maximum allowable sludge residence time (SRT) is calculated, and the amount of water that gives that value is taken as the maximum treatable amount of water.

  (g) The maximum allowable aerobic tank sludge residence time (A-SRT) is calculated, and the amount of water giving this value is defined as the maximum treatable water amount.

  (h) Calculate all of the above-mentioned determination methods, and use the minimum amount among them as the maximum amount of water that can be treated.

  By the method as described above, the maximum treatable water amount determining means 3 is executed.

  Next, the cost calculation parameter setting means 4 sets parameters necessary for the cost calculation means 8 to perform the cost calculation.

  In this setting, the inflow data of each treatment plant is used to estimate the air volume and flow rate of each device such as a blower and pump from this data, and then the parameters are set so that the cost of each device can be calculated. This is a characteristic point of the present invention. That is, the present invention is characterized in that it is found that it is extremely useful to estimate the air volume and flow rate of each device from the inflow amount by paying attention to the following points, and the cost calculation parameter setting means In step 4, parameters are set using the following features.

  (i) Online sensors that measure inflow are installed at most sewage treatment plants and are usually almost always available as online information. Therefore, there is no obstacle element for concretely realizing the present invention, and in many sewage treatment plants, water interchange according to the present invention can be realized without requiring any special device or new sensor installation.

  (j) Since the inflow is water before being treated as sewage, it is important to predict and estimate the operating cost required for treatment and the quality of discharged water after treatment (or water quality cost converted to cost). Cause information. Therefore, operation based on a kind of operation cost and water quality cost prediction by feedforward becomes possible. In fact, when considering optimal water accommodation that minimizes operating costs and water quality costs, it is necessary to predict the results (operating costs and water quality costs) when it is assumed that a certain water accommodation has been performed. The amount of inflow is extremely important as factor information, and it is almost impossible to predict the operating cost without using it.

  (k) On the contrary, the inflow is not only one of the important factor information of the operation cost, but is also the largest factor information, and the operation cost can be predicted with considerably high accuracy only by the inflow. In fact, there is usually a strong correlation between the inflow and the flow and air volume of various pumps and blowers. For this reason, the flow rate and air volume of various pumps and blowers can be estimated with high accuracy in many cases only by knowing the inflow rate, and the operation cost can be easily calculated if the blower air volume and pump flow rate are known. For example, many blowers and pumps are often controlled by a method called ratio control. In such a case, the air volume and flow rate of the blower and pump are exactly the inflow rate multiplied by a certain constant. . When the ratio is not controlled (for example, when the blower is controlled at a constant dissolved oxygen concentration (DO)), there is no strict correlation as in the ratio control, but it is necessary if the inflow is large. Since the air flow and flow rate of the blower and pump increase, there is often a relatively strong correlation. Actually, even when the blower is controlled to have a constant DO concentration value, the blower air volume is often expressed as a ratio to the inflow volume. Therefore, estimating the flow rate and air volume of various pumps and blowers from the inflow amount is a very realistic and effective method.

  (l) When the discharge load is converted into costs and taken into account for cost evaluation, it is necessary to estimate the discharge load amount. The discharge load amount is the inflow load amount or inflow amount, and the operation of the blower or pump of each process. Correlates with conditions (air volume and flow rate). As described above, since the air flow rate and flow rate of the blower and pump can be estimated from the inflow amount, the discharge load amount can be estimated to some extent only by knowing the inflow amount. Therefore, the water quality cost can be predicted only from the inflow amount.

  Paying attention to the above points, in the cost calculation parameter setting means 4, first, each of the measurement values measured by the process A inflow sensor 1A6 and the process B inflow sensor 1B6 stored in the process data collection / storage unit 2 is stored. The amount of inflow in the treatment plant, and the treatment plant blower, return pump, pumping pump, circulation pump, excess sludge extraction pump measured by the treatment plant blower / pump flow sensor 1A9 and treatment plant blower / pump flow sensor 1B9 Then, perform correlation analysis with the flow rate data of blower pumps such as water interchange pumps, and set the coefficient. When the blower and pump are ratio controlled, there is a perfect linear correlation as shown in FIG. 2, and the coefficient (slope in FIG. 2) is a conversion coefficient for estimating the blower and pump flow rate from the inflow rate. is there. When the blower and the pump are not in the ratio control, for example, when the blower is controlled at a constant DO concentration, for example, a plot as shown in FIG. 3 is obtained. In such a case, a straight line that approximates the obtained plot is obtained, and the slope thereof may be used as a conversion coefficient, or an approximate curve may be obtained by considering it as a nonlinear correlation, and the coefficient group may be used as a conversion coefficient. .

  By performing such a correlation analysis, it is possible to set a conversion coefficient (parameter) for estimating the operation costs of the pumps and blowers of each treatment plant from the inflow amount. If the air flow and flow rate of the blower and pump are known, information on the rated power, rated capacity, efficiency, number of units, etc. of the blower and pump, and how to operate the blower and pump, such as the order in which the blower and pump are started (control Method) and the cost per unit electric energy can be calculated to calculate the power cost of the blower or pump.

  If you want to incorporate the cost of chemical injection into the operating cost, find the correlation between the chemical injection amount and the inflow amount according to the method of calculating the power cost of the pump and blower, and convert the cost per unit chemical. Can be taken into account.

Similarly, when considering not only the power and chemical costs of pumps and blowers but also the disposal costs of sludge discharged from sewage treatment plants, the sludge disposal costs are
[Equation 1]
Sludge disposal cost = disposal cost per unit amount x surplus sludge flow rate x surplus sludge concentration = cost per unit amount x surplus sludge concentration x correlation coefficient x inflow amount. Therefore, if surplus sludge concentration information is available, sludge disposal costs can be estimated from the inflow. Since this surplus sludge concentration is measured by the A treatment plant surplus sludge concentration sensor 1A8 and the B treatment plant surplus sludge concentration sensor 1B8, the value can be used when the cost calculation means 8 is directly executed. If the A treatment plant surplus sludge concentration sensor 1A8 and the B treatment plant surplus sludge concentration sensor 1B8 are not installed, for example, the correlation between the inflow amount and the generated sludge amount (surplus sludge concentration x surplus sludge concentration) is obtained in advance. In addition, a method of estimating the amount of generated sludge using this may be adopted. When the cost calculation means 8 performs the cost calculation, it is necessary to use not only the actual inflow amount but also the assumed inflow amount for the operation pattern as in the case of water accommodation. Strictly speaking, the excess sludge concentration changes in conjunction with changes in the inflow rate, but the rate of change in the excess sludge concentration is sufficiently slower than the rate of change in the inflow rate (the inflow rate is less than a minute). However, it is considered that the surplus sludge concentration may be represented by the actually measured surplus sludge concentration.

  The parameter for calculating the operating cost can be set by the above method.

  Furthermore, when considering water quality costs, certain pollutants X (eg BOD (biochemical oxygen demand), COD (chemical oxygen demand), TN (total nitrogen), TP (total phosphorus), SS ( A correlation formula between the amount of suspended solids) and the like, and the inflow amount and operating conditions of various pumps and blowers is prepared in advance.

  For example, it is expressed by the following formula.

[Equation 2]
X concentration x discharge flow rate (contaminant load) = correlation coefficient 1 x inflow volume + correlation coefficient 2 x blower air volume x correlation coefficient 3 x return sludge pump flow rate ...
If expressed by such an expression, the correlation between the flow rate / air volume of each pump or blower and the inflow amount has been created in advance, and therefore the pollutant load amount of the discharged water can be estimated only from the inflow amount. Therefore, if we further set a coefficient to convert the pollutant load to cost, assuming a drainage levy (or environmental tax) on the pollutant load of the discharged water, the water quality cost can be estimated from the inflow only. can do. Note that the pollutant is not necessarily a single substance, and for example, BOD, TN, TP, SS, etc. may be individually defined. Of course, the correlation between the pollutant load and the inflow is not necessarily a linear correlation, but may be a non-linear correlation or a correlation having temporal dynamics, such as an FIR (finite impulse response) model. Correlation using anything may be used.

  In summary, the cost calculation parameter setting means 4 for calculating the cost (operating cost and / or water quality cost) is a means for setting necessary items among the following items.

(a) Correlation coefficient between blower pump flow rate and inflow rate for blowers, return pumps, pumps, circulation pumps, excess sludge extraction pumps, water interchange pumps, or various chemical injection pumps. In the case of nonlinear correlation, nonlinear correlation equation and its coefficient group
(b) Number of blower pumps such as blowers, return pumps, pumps, circulation pumps, excess sludge extraction pumps, water interchange pumps, or various chemical injection pumps
(c) Formulas representing the operation method (control method) of blower pumps such as blowers, return pumps, pumps, circulation pumps, excess sludge extraction pumps, water interchange pumps, or various chemical injection pumps
(d) Rated power, rated capacity, and efficiency of blower pumps such as blowers, return pumps, pumps, circulation pumps, excess sludge extraction pumps, water interchange pumps, or various chemical injection pumps
(e) Correlation coefficient between the generated sludge amount and the inflow amount (when there is no surplus sludge concentration sensor. If there is, the surplus sludge concentration is directly taken in by the cost calculation means 8)
(f) Cost per unit power (electric power cost)
(g) Cost per unit chemical amount (chemical cost)
(h) Sludge disposal cost per unit treatment amount (sludge disposal cost)
(i) Correlation coefficient between discharge pollutant load, inflow, flow rate and air volume of various pumps and blowers. Or correlation coefficient group of nonlinear correlation and dynamic correlation
(j) Cost conversion factor per unit pollutant load (drainage levy)
By setting these parameters, the cost calculation parameter setting means 4 is executed. The above is the operation of the cost calculation parameter setting unit 4 in the first embodiment.

  The above processable maximum water amount determining means 3 and the cost calculation parameter setting means 4 are normally executed offline in advance. However, the set value may be changed online according to the situation.

  The following actions are usually performed online.

Next, in the inflow amount calculation means 5, the inflow amount data of each processing field measured by the A processing field inflow amount sensor 1A6 and the B processing field inflow amount sensor 1B6 stored in the process data collecting / storing unit 2. Of the A → B water interchangeable pump 1A5 and the B → A water interchangeable pump 1B5 using the predicted inflow amount obtained by predicting the inflow amount over a predetermined future time point from the inflow amount data. All inflows or predicted inflows into each treatment plant when all operating conditions (operation patterns) are assumed to be calculated are calculated. For example, in the simplest case, when the A → B water interchange pump 1A5 and the B → A water interchange pump 1B5 are each one and the rated capacities are Q ^trAB and Q ^trBA , respectively, the A treatment plant inflow Assuming that the inflows measured by the amount sensor 1A6 and the B treatment plant inflow amount sensor 1B6 are Q ^A _in and Q ^B _in , respectively, the amount of water flowing into the A treatment plant 1A1 is Q ^A _in , Q ^A _in -Q ^trAB , Q ^A _in + Q ^trBA can be considered, and similarly, the amount of water flowing into the B treatment plant 1B1 is three patterns, Q ^B _in , Q ^B _in -Q ^trBA , Q ^B _in + Q ^trAB Conceivable. In this manner, the inflow amount of each treatment plant for all operation patterns is calculated. If the water interchangeable pump is of variable speed and the flow rate can be set finely, it is not possible to calculate all the inflows, so each inflow at the point where the number of operating pumps is switched is calculated. The above is the operation of the inflow amount calculating means 5 in the first embodiment.

  Next, as described above, the anomaly detection means 6 uses anomaly detection data (Q statistic or Hotelling's data) by an anomaly detection algorithm using an anomaly detection sensor such as an anomaly detection sensor such as a respiratory rate meter. By setting an appropriate threshold value (referred to as T2 statistic), an abnormality in the A processing field 1A1 and the B processing field 1B1 is detected. In addition, abnormalities such as failure information of various pumps and blowers are also detected.

  And what kind of abnormality has occurred in which treatment plant is recorded. In addition, this abnormality detection means may not necessarily make a binary determination of whether or not there is an abnormality, but may make a multi-level determination such as a normal level, a caution level, a warning level, and an abnormal level. The above is the operation of the abnormality detection means 6 in the first embodiment.

Next, in the transport equipment operable pattern determining means 7, on the basis of the inflow amount to each treatment site for all the operation patterns calculated by the inflow amount calculating means 5 and the abnormality information by the abnormality detecting means 6, Determine the driving pattern. The determination of the drivable pattern can be executed as follows, for example. First, the inflow amount to each treatment plant for all the operation patterns calculated by the inflow amount computing unit 5 is compared with the magnitude relationship between the maximum treatable water amount of each treatment plant determined by the maximum treatable water amount determining unit 3, and Select only those that do not exceed the maximum water volume. For example, if Q ^A _in + Q ^trBA is greater than Q ^max _A and the other Q ^A _in and Q ^A _in -Q ^trAB are smaller than Q ^max _{A in the} amount of water that can possibly flow into A treatment plant 1A1, Q ^A _in and Q ^A _in -Q ^trAB are selected. Similarly, if all of Q ^B _in , Q ^B _in -Q ^trBA , and Q ^B _in + Q ^trAB are smaller than Q ^max _{B in the} amount of water that can possibly flow into B treatment plant 1B1, all three patterns are Left behind. From these results, it can be seen that there are two possible operation patterns of the water accommodation pump: (1) no accommodation and (2) accommodation from the A treatment plant to the B treatment plant. This example is a very simple example, but when multiple water interchange pumps are installed and their rated capacity and rated power are different, there are various operation patterns. Extract all possible driving patterns.

  Next, further possible operation patterns are narrowed down based on the abnormality information generated by the abnormality detection means 6. For example, if any of the water interchange pumps itself fails, the operation of that pump is excluded from possible operation patterns. Further, for example, when a processing abnormality occurs in the A processing plant, “Prohibit water interchange from the B processing plant to the A processing plant” or stronger, “from the A processing plant to the B processing plant. Narrow down the possible driving patterns by giving conditions such as “Must be flexible”. Further, when the abnormality detection means 6 determines the abnormality level in a multivalued manner, the constraint condition given to the operation of the water accommodation pump is changed according to the abnormality level. For example, when an abnormal level at a certain treatment plant is low, water accommodation to the treatment plant is prohibited, and when an abnormal level is high, water exchange to another treatment plant must be performed. , Etc. are set according to the abnormal level.

  In any case, the magnitude comparison between the inflow amount of each treatment plant for all operation patterns calculated by the inflow amount calculation means 5 and the maximum water amount that can be processed determined by the maximum treatable water amount determination means 3, and the abnormality detection means 6 Based on the abnormality information generated in step 1, the operable pattern of the water accommodation pump can be extracted.

In addition, when there is no pattern that can operate the water accommodation pump by the above procedure, for example,
(a) Leave an operation pattern (no flexibility) that does not allow mutual accommodation.

  (b) Prioritize abnormal information, exclude only operation patterns restricted by abnormal information, and allow other operation patterns.

  (c) Leave only the operation pattern that minimizes the amount of water that exceeds the maximum water capacity that can be treated at multiple treatment plants.

The driving method in the case of default is determined. Thus, by determining the default driving method, at least one possible driving pattern is left without falling into a state where there is no possible driving pattern. The above is the operation of the transportation device operable pattern determining means 7 in the first embodiment.

  Next, in the cost calculation means 8, the transport equipment operation possible pattern selected from the cost calculation parameters set by the cost calculation parameter setting means 4 and the inflow amounts for various operation patterns calculated by the inflow amount calculation means 5. The cost of each treatment plant corresponding to the possible operation pattern of the water accommodation pump is calculated using the inflow amount of each treatment plant corresponding to the possible operation pattern of the water accommodation pump determined to be operable by the determining means 7. To do. A specific execution method will be described with reference to FIGS.

  FIG. 4 and FIG. 5 show examples of relational expressions between the inflows of the A treatment plant 1A1 and the B treatment plant 1B1 and various operation costs, respectively. Such a relational expression between the inflow amount and various operating costs can be calculated in advance if the cost calculation parameter setting unit 4 appropriately sets the cost calculation parameter. In the same manner, not only the operation cost but also the water quality cost can be calculated in advance as a relational expression with the inflow amount. Thus, if the relational expression between the cost and the inflow amount as shown in FIG. 4 and FIG. 5 is prepared in advance, the inflow amount of each treatment plant corresponding to the possible operation pattern of the water interchange pump is expressed in these relational expressions. By substituting, it is possible to easily calculate the operation cost and water quality cost of each treatment plant corresponding to the operation pattern such as a water accommodation pump. The above is the operation of the cost calculation means 8 in the first embodiment.

  As can be understood from FIGS. 4 and 5, it can be seen that there are some places where the cost is rapidly increasing at some inflow points. This is the point where the number of pumps and blowers operating switches. That is, the cost changes drastically in that the number of pumps and blowers that start up changes. This indicates that, as pointed out in the prior art, it is difficult for either the A treatment plant or the B treatment plant to be a treatment plant capable of processing at low cost. In actual water accommodation, depending on the amount of inflow at the time of water accommodation, when processing is possible so that the total number of pumps and blowers can be minimized, processing at the lowest cost is possible. There are many. Water interchange that minimizes the number of startups depends strongly on the amount of inflow flowing into the A treatment plant and the B treatment plant. Whether it is better to accommodate from the B treatment plant to the A treatment plant changes from moment to moment. Furthermore, when there are multiple water interchange pumps and multiple treatment plants, it is necessary to decide what amount should be accommodated from which treatment plant to which treatment plant. It strongly depends on the inflow volume of each treatment plant, the number of interchangeable pumps and the rated capacity.

  The present embodiment is characterized by proposing a method for searching for a water accommodation method that minimizes the overall cost according to the inflow amount of each treatment plant, focusing on this point. Although it can be estimated that such cost minimization can be achieved by using a complicated analysis model such as a process simulation model, in the present invention, detailed analysis by such process simulation or the like is not used. However, if some parameters for cost calculation are set in advance from the actual operation data of the treatment plant, the inflow will take into account the operating conditions of equipment such as pumps and blowers that are extremely cost-related. It is characterized in that it has been devised that a correlation equation between the quantity, the operating cost and the water quality cost can be easily realized in the form as shown in FIGS.

  Next, in the transport equipment operation pattern determining means 9, the operation pattern of the water accommodation pump that minimizes the cost calculated by the cost calculating means 8 from the operable patterns determined by the transport equipment operable pattern determining means 7. Is selected as the optimum driving pattern. If the operable pattern determined by the transport device operable pattern determining means 7 is determined in a single way without having a plurality of possible operating patterns, it is used as it is as the operating pattern of the water accommodation pump. . The above is the operation of the transport device operation pattern determination means 9 in the first embodiment.

  Finally, the sewage treatment method determination means 10 determines the treatment method of sewage (sewage) flowing into each treatment plant for the optimum operation pattern of the water accommodation pump determined by the transport equipment operation pattern determination means 9. When the operation pattern of the water interchange pump is selected so that the cost calculated by the cost calculation means 8 is minimized in the transport equipment operation pattern determination means 9, the normal sewage treatment (activated sludge treatment, etc.) is performed. Executed.

  On the other hand, when only a single operation pattern appears in the transport device operation possible pattern determination means 7 and this operation pattern is selected in the transport device operation pattern determination means 9, it is not always possible to perform normal sewage treatment. .

  If the reason why the transportation device operable pattern determining means 7 is unique is due to an abnormality in the A treatment plant or the B treatment plant, the normal treatment is performed in the treatment plant where no abnormality has occurred. In the treatment plant where an abnormality has occurred, if there is still an inflow after the maximum accommodation, it is selected whether to continue the treatment as it is or to release it to the river after performing a simple treatment. The criterion for this selection is to select a better treatment by judging which of the discharged water quality is better when the treatment is performed with the abnormality occurring, and which is better when the simple treatment is performed.

  If the maximum amount of water that can be handled by at least one of the treatment plant A or B treatment plant is exceeded even if the inflow is the only reason for the transportation device operation pattern determination means 7, Inflow sewage within the maximum amount of water that can be treated at the treatment plant is treated as usual, and the amount exceeding the maximum amount of water that can be treated is discharged into the river after simple treatment. The means for making such a determination is the sewage treatment method determining means 10.

  The series of operations described above are the operations of the first embodiment corresponding to claims 1 and 5.

<< Effects of First Embodiment >>
The main effects of the first embodiment are as follows.

  According to the first embodiment, specific operational rules for water accommodation are taken into consideration, simultaneously considering the three objectives of avoiding risks such as abnormalities required for water accommodation, cost reduction, and water quality maintenance / improvement. realizable. In particular, an operation pattern for specifically operating a transport device such as a pump that actually performs water accommodation can be determined in consideration of these three purposes.

  In addition, data that is usually measured at any treatment plant, such as inflow, is mainly used as online information, and within a time that can be easily calculated online, the specific rules for operating transportation equipment such as water interchange pumps Can be provided.

<Second Embodiment>
<< Configuration of Second Embodiment >>
The configuration of the second embodiment is shown in FIG. FIG. 6 is different from FIG. 1 in that an A treatment field inflow pollutant sensor 1A10 and a B treatment field inflow pollutant sensor 1B10 flowing into each treatment plant are mounted, and a maximum water volume determination means 3 that can be treated. Instead, a processable maximum load amount determining means 11 is provided, and an inflow load amount calculating means 12 is provided instead of the inflow amount calculating means 4.

  The inflow load amount calculation means 12 includes an inflow amount calculation means 121 and an inflow pollutant concentration calculation means 122.

  The operation of this portion corresponds to claims 2 and 6, and this point is different from those of claims 1 and 5. Therefore, in the following, the operation of different parts will be mainly described.

<< Operation of Second Embodiment >>
The operation of the second embodiment will be described with reference to FIG.

  First, in addition to << the operation of the first embodiment >>, in the A treatment field inflow pollutant concentration sensor 1A10 and B treatment inflow pollutant concentration sensor 1B10 installed in each treatment plant, Concentrations of the inflowing water quality, for example, BOD, COD, TN, TP, SS, etc. are measured at a predetermined cycle, and this is recorded in the process online measurement data collection / storage unit 21 in a predetermined format.

Next, the processable maximum load amount determination means 11 supplies from the process online measurement data collection / storage unit 21 if necessary, based on the civil engineering structure data supplied from the process information data collection / storage unit 22. The maximum load amount WQ ^max _i (i = A, B) that can be processed in each treatment plant is determined using the inflow amount data and the inflow pollutant concentration data of each treatment plant. As a method of determining the maximum load amount, for example, it can be determined by the following method.

  (a) Design water volume x discharge allowable pollutant concentration is the maximum load that can be treated.

  (b) Based on the plant operation results data up to now, the limit load that can meet the water quality standard of discharged water quality is defined as the treatable load water amount.

  (c) The maximum allowable water area load is calculated on the basis of the inflow load, and the load giving that value is the maximum load that can be processed.

  (d) The maximum allowable sludge residence time (SRT) is calculated based on the inflow load, and the load amount giving the value is defined as the maximum load amount that can be processed.

  (e) The maximum allowable aerobic tank sludge residence time (A-SRT) is calculated based on the inflow load, and the load amount giving the value is defined as the maximum load amount that can be processed.

  (f) Calculate all the above-mentioned determination methods, and set the minimum amount among them as the maximum load that can be processed.

  The processable maximum load amount determining means 11 is executed by the method as described above. The above is the operation of the processable maximum load amount determining means 11 in the second embodiment.

  Next, the cost calculation parameter setting means 4 sets parameters necessary for the cost calculation means 8 to perform the cost calculation. The difference from << the operation of the first embodiment >> is that the inflow load amount (inflow amount x pollutant concentration) is used instead of the inflow amount. The advantages and disadvantages of using inflow load instead of inflow are as follows.

  (g) Online sensors that measure the inflow are installed at most sewage treatment plants and can be used almost certainly as online information, but the inflow pollutant concentration is not always installed. Therefore, this method is based on the premise that a sensor capable of measuring the inflowing pollutant concentration is installed or newly installed. However, in many cases, a sensor for measuring a basic pollutant concentration such as COD is installed.

  (h) Inflow load is the load of water before being treated as sewage, and the operating cost required for treatment and the quality of discharged water after treatment (or water quality cost converted to cost) are the same as inflow. This is important factor information for prediction and estimation. Compared with the inflow amount, the inflow load amount directly indicates the amount of pollutant in water that must be treated, so the estimation accuracy is considered to improve.

  (i) In addition, the operating cost can be predicted with considerably high accuracy using only the inflow load in the same way as the inflow. However, when the ratio of the blower and the pump in the treatment plant is controlled so as to specify the ratio with respect to the inflow rate, it is more accurate to use the inflow amount for calculating the operation cost. However, when the ratio control is not performed, since the inflow load amount indicates the amount of all pollutants to be processed, it is more likely that the operation cost can be predicted with higher accuracy by using the inflow load amount. Also, even if the ratio is controlled, if the conditions for online calculation of the inflow load are in place, the quality of the discharged water can be improved by changing the control method to ratio control for the inflow load. It is also possible to increase the correlation between the inflow load amount and the flow rate / air volume of the blower or pump.

  (j) When the discharge load is converted into costs and taken into account for cost evaluation, it is necessary to estimate the discharge load amount. However, the discharge load amount often has a stronger correlation with the inflow load amount than the inflow amount. In addition, there is a correlation with the blower and pump operating conditions (air volume and flow rate) of each process. As described above, since the flow rate and flow rate of the blower and the pump can be estimated from the inflow load amount, the discharge load amount can be estimated to some extent only by knowing the inflow load amount. However, as mentioned above, the air volume / flow rate of the blower or pump may have a stronger correlation with the inflow rate than the load amount. In such cases, the air volume / flow rate of the blower or pump is estimated from the inflow amount. It is also possible to use a method for predicting the water quality cost using the estimated blower / pump air volume / flow rate and inflow load.

  As mentioned above, if conditions for measuring inflow pollutant concentration on-line are in place, use inflow load instead of inflow, or use inflow and inflow load according to the purpose. It may be better to set the cost calculation parameters. Since the specific setting method of this parameter is merely replacing “inflow amount” with “inflow load amount”, it follows the method of “Effect of the embodiment”. Therefore, detailed description of the action is omitted.

  The above is normally performed offline, but the following operations are normally performed online.

Next, it is assumed that the inflow load amount calculation means 12 executes all the operating conditions (operation patterns) of the A → B water interchange pump 1A5 and the B → A water interchange pump 1B5 instead of the inflow amount calculation means 5. Inflow load amount (or predicted inflow load amount) is calculated instead of the inflow amount (or predicted inflow amount). For example, in the simplest case, when the A → B water interchange pump 1A5 and the B → A water interchange pump 1B5 are each one and the rated capacities are Q ^trAB and Q ^trBA , respectively, the A treatment plant inflow The inflows measured by the amount sensor 1A6 and the B treatment plant inflow amount sensor 1B6 are Q ^A _in and Q ^B _in , respectively, and the pollutants measured by the A treatment site inflow pollutant sensor sensor 1A10 and the B treatment plant inflow pollutant sensor B10. each ^W _a in the ^{concentration,} when _{W B in,} load flowing into a treatment plant 1A1 _{^{is, Q a in * W a in}} , (Q a in -Q trAB) W a in, Q a in * W a Three patterns of _in + Q ^trBA * W ^B _in are conceivable. Similarly, the amount of water flowing into the B treatment plant 1B1 is Q ^B _in * W ^B _in , (Q ^B _in −Q ^trBA ) * W ^B _in , Q ^B _in * W ^B _in + Q ^trAB * W ^A _in are considered. In this way, the inflow load amount of each treatment plant for all operation patterns is calculated. In this way, the point that the inflow load amount is calculated instead of the inflow amount is different from << the operation of the embodiment >>. The above is the operation of the inflow load amount calculating means 12 in the second embodiment.

  Next, the abnormality detection means 6 performs abnormality detection in the same manner as in the first embodiment.

  Next, in the transport equipment operable pattern determination means 7, the water accommodation is based on the inflow load amount to each processing site for all the operation patterns calculated by the inflow load amount calculation means 12 and the abnormality information by the abnormality detection means 6. Determine the pump operating pattern. The difference from the first embodiment is that, when extracting possible operation patterns, the comparison of the load amount is performed instead of the comparison of the water amount, and the other operations are the same as those in the first embodiment. It can be carried out in exactly the same way.

  In this way, it is possible to extract an operable pattern of the water accommodation pump. The above is the operation of the transport equipment operable pattern determining means 7 in the second embodiment.

  Next, the operation of the cost calculation means 8 can also be performed by a method substantially similar to that of the first embodiment.

  The only difference is that when cost calculation is performed, cost prediction is not performed from the inflow amount but from the inflow load amount. That is, it is only a point to implement by replacing the horizontal axis of the diagrams as shown in FIGS. 4 and 5 with the inflow load amount instead of the inflow amount. However, as described above, the operation cost of the pump or blower is obtained from the inflow amount, and the water quality cost of the discharged water quality is obtained from the inflow load amount. . This is the function of the cost calculation means 8.

  Next, the operation of the transport device operation pattern determination means 9 is exactly the same as in the first embodiment.

  Finally, the operation of the sewage treatment method determining means 10 is substantially the same as that of the first embodiment, but the determination of whether to perform simple treatment or normal treatment is not the maximum treatable water amount but the maximum treatable load amount. Is different based on In an actual treatment plant, whether simple treatment or normal treatment is performed is usually based on the amount of water. However, considering that the water flowing from the sewage treatment plant to the river will ultimately affect the water environment of the river or the like, it is more reasonable to do it based on the load if it can be realized. In the second embodiment, from such a viewpoint, if the pollutant concentration of the influent water can be measured online, the execution method is based on the fact that switching of such treatment is more rational. Is shown. This is the sewage treatment method determining means 10, and this is the operation of the second embodiment.

  The series of actions described above is the second embodiment corresponding to claims 2 and 6.

  In the above series of actions, the pollutant concentration does not necessarily have to be one pollutant concentration such as COD, BOD, SS, TN, TP, etc., and their combined function, for example, weighted linear sum, a1COD + a2BOD + a3SS + a4TN + a5TP, etc. It is good. In this case, the weight can be determined based on the magnitude of the influence of each pollutant on the river environment.

<< Effect of Second Embodiment >>
In the second embodiment, the following effects can be mainly obtained.

  In addition to the effects of the first embodiment described above, if the concentration of various pollutants in the inflow water can be measured with an on-line sensor, a more effective water interchange pump can be operated. Here, the term “effective” means that the accuracy of the operation pattern extraction possible for the water accommodation pump is improved, the accuracy of the operation selection method that minimizes the cost is improved, and the processing method in each treatment plant is It shows that it becomes a method that considers the river environment more accurately.

<Third Embodiment>
<< Configuration of Third Embodiment >>
The configuration of the third embodiment is shown in FIG. FIG. 7 differs from FIG. 1 in that not only the treatment tank (reaction tank) for treating the sewage flowing into each treatment plant, but also the storage tank of the A treatment plant 1A11 that can temporarily store the incoming sewage. And the storage tank of B processing plant 1B11 is installed. Such a storage tank does not necessarily need to be newly constructed, and may use a reaction tank or a sedimentation tank that is not used. In addition, in connection with the installation of the storage tanks, Q ^st _Ai (i = 1,..., P _A ) and Q ^st _Bi (for ^sending sewage temporarily stored from each storage tank to the treatment tank, respectively. i = 1, ..., with a rated capacity of _{P B),} a treatment plant reservoir water supply pump 1A12 and _{P B} stand B treatment plant reservoir water supply pump 1B12 of PA stand are juxtaposed. When inflowing sewage is sent to a temporary storage tank, as shown in << Effect of the third embodiment >>, which will be described later, it is normally treated by overflow, so installation of transportation equipment such as a pump is assumed. Of course, a pump may be installed in this part as well. Each storage tank is provided with an A processing tank storage tank sensor 1A13 and a B processing tank storage tank storage sensor 1B13 for calculating the storage amount of each storage tank. Along with this, a storage amount calculation means 13 is provided. These points are different from FIG.

  The operation of this portion corresponds to claims 3 and 5. This is different from the operation of the first embodiment. Therefore, in the following, the operation of different parts will be mainly described.

<< Operation of the Third Embodiment >>
The operation of the third embodiment will be described with reference to FIG.

  In addition to the description shown in << Effects of the first embodiment >>, the A processing site storage amount sensor 1A13 and the B processing site storage amount sensor 1B13 installed in each processing step can be used for each processing step at a predetermined cycle. Information on the storage amount is measured, and this is recorded in the process online measurement data collection / storage unit 21 in a predetermined format. This storage amount sensor may be any sensor that provides information necessary for calculating the storage amount. For example, the storage amount sensor may be a water level meter of each storage tank, A combination of an inflow meter and a water flow meter of the A treatment plant storage water pump 1A12 or the B treatment plant storage water pump 1B12 may be used.

  Next, the effect | action of the processable maximum water amount determination means 3 is completely the same as that of 1st Embodiment.

  Next, the cost calculation parameter setting means 4 sets parameters necessary for the cost calculation means 8 to perform the cost calculation, and this operation is almost the same. However, since the stored water pump is installed, parameters necessary for the operating cost of the stored water pump are set as necessary.

  Next, the storage amount calculation means 13 calculates the actual storage amount from the amounts measured by the A processing site storage amount sensor 1A13 and the B processing site storage amount sensor 1B13 stored in the process data collection / storage unit 2. To do. If the storage volume sensor consists of an inflow flow meter and a water flow meter to the stored water, the accumulated amount is the difference between the measured value of the inflow meter and the measured value of the water flow meter from the operation start time. . When the storage amount sensor is a water level gauge of the storage tank, the storage amount is calculated by converting the storage tank from the civil engineering structure to the storage amount.

Next, in the inflow amount calculation means 5, the inflow amount data of each processing field measured by the A processing field inflow amount sensor 1A6 and the B processing field inflow amount sensor 1B6 stored in the process data collecting / storing unit 2. Are used directly, or A → B water interchangeable pump 1A5 and B → A water interchangeable pump 1B5, using predicted inflow amount predicted from a predetermined future time point based on inflow amount data. and the inflow amount or predicted inflow into the treatment plant when it is assumed that performs all the operating conditions (operation pattern) of a treatment plant reservoir water supply pump 1A12 and P _B stand B treatment plant reservoir water supply pump 1B12 Are all calculated. For example, there are one A → B water interchange pump 1A5 and B → A water interchange pump 1B5 each having a rated capacity of Q ^trAB and Q ^trBA , and the rated capacities of the A treatment plant and the B treatment plant are Q ^st _A And Q ^st _B storage water feed pumps are installed one by one, the inflows measured by the A treatment plant inflow sensor 1A6 and the B treatment plant inflow sensor 1B6 are respectively Q ^A _in and Q ^B When _in, the amount of water flowing into the a treatment plant 1A1 ^{_{is, Q a in, Q a in}} -Q trAB, Q a in + Q trBA, Q a in + Q st a, Q a in -Q trAB + Q st a, Q a _in ^{+ Q} _trBA + ^{Q st} 6 types of patterns of _a is considered similarly, the amount of water flowing into the B treatment plant 1B1 ^{_{is, Q B in, Q B in}} -Q trBA, Q B in + Q trAB, Q B i ^{_{+ Q st B, Q B in}} -Q trBA + Q st B, six types of patterns of ^{Q B in + Q trAB + Q} st B is considered. In this manner, the inflow amount of each treatment plant for all operation patterns is calculated. In other words, in addition to the water accommodation operation pattern shown in the first embodiment, all operation patterns to which the operation pattern of whether or not the stored water is treated or how much the stored water is treated are listed. Keep it. In this case as well, if the water interchange pump and the stored water pump are variable speed and the flow rate can be set finely, it is not possible to calculate all the inflows. Calculate the inflow. This is the operation of the inflow amount calculating means 5 in the third embodiment.

  Next, the operation of the abnormality detection means 6 is the same as that of the first embodiment, but since a stored water feed pump is installed, failure information for this pump is also normally detected.

  Next, the operation of the transport device operable pattern determination means 7 is the same as that of the first embodiment. However, the number of patterns that can be operated will increase due to the newly installed reservoir water pump. Whether or not the stored water feed pump can be activated is related not only to the magnitude relationship between the flow rate flowing into the processing tank and the maximum amount of water that can be processed, but also to how much stored water exists in the storage tank. This information is obtained from the storage amount calculation means 13.

  Next, the operation of the cost calculation means 8 is exactly the same as in the first embodiment.

  Next, the transportation device operation pattern determination means 9 is substantially the same as that of the first embodiment, but various methods can be considered for the execution method of the determination means depending on the operation strategy.

  Just as in the first embodiment, the operation pattern of the water accommodation pump that minimizes the cost calculated by the cost calculation means 8 from the operation possible patterns determined by the transportation equipment operation pattern determination means 7 is selected. One strategy is to select the optimal driving pattern. In addition, if the storage tank temporarily stores the influent water in the first place, and if priority is given to maximizing the capacity as much as possible, it is determined by the transport equipment operable pattern determination means 7. Out of the available operation patterns, the one that can treat the stored water preferentially is selected, and even when there are multiple options, the operation pattern of water interchange that minimizes the cost is optimal. It can also be selected as a simple driving pattern. In addition, in any one or more treatment plants in a plurality of treatment plant groups, when there is an inflow to the storage tank, that is, in any one or more treatment plants, it is raining that exceeds the maximum treatable water volume. In some cases, if there are multiple options, including rules such as refraining from starting the stored water pumps at any treatment plant, the water with the lowest cost is included. A flexible operation pattern can also be selected as the optimum operation pattern.

  As described above, the transport device operation pattern determining unit 9 determines an operation pattern that minimizes the cost from among a plurality of options as an optimum operation pattern. Even if the optimization calculation for cost minimization is not performed on all the operable patterns determined in (1), if there is something to be determined with higher priority (= fix a certain operation pattern) If there is still redundancy (= options of a plurality of operation patterns), it is only necessary to select it.

This is the operation of the transportation device operation pattern determination means 9 in the third embodiment.

  Finally, the sewage treatment method determination means 10 determines the treatment method of sewage (sewage) flowing into each treatment plant for the optimum operation pattern of the water accommodation pump determined by the transport equipment operation pattern determination means 9. Since the third embodiment is based on the premise that a storage tank is installed in the third embodiment, it is different from the operation of the first embodiment. First, when the operation pattern of the water interchangeable pump is selected so that the cost calculated by the cost calculation means 8 is minimized in the transport equipment operation pattern determination means 9, the operation pattern is not performed unless the cost evaluation is performed. Sewage treatment (activated sludge treatment, etc.) is performed as usual.

  On the other hand, when only a single operation pattern appears in the transport device operation possible pattern determination means 7 and this operation pattern is selected in the transport device operation pattern determination means 9, it is not always possible to perform normal sewage treatment. .

  If the reason why the transportation device operable pattern determining means 7 is unique is due to an abnormality in the A treatment plant or the B treatment plant, the normal treatment is performed in the treatment plant where no abnormality has occurred. If there is still inflow even after maximum accommodation at the treatment plant where the abnormality has occurred, first, if there is free capacity in the temporary storage tank, temporarily store it until the temporary storage tank is full. Store inflow water into the tank. Nevertheless, when the inflow is continued because the abnormality does not recover, it is selected whether to continue the process as it is or to release it to the river after performing a simple process. The criteria for this selection are the same as the criteria for the action of the first embodiment.

  If the maximum amount of water that can be handled by at least one of the treatment plant A or B treatment plant is exceeded even if the inflow is the only reason for the transportation device operation pattern determination means 7, Inflow sewage within the maximum amount of water that can be treated at the treatment plant is treated as usual, and the amount exceeding the maximum amount of water that can be treated is stored in the temporary storage tank using the temporary storage tank as a buffer. If the inflow exceeding the maximum water volume that can be treated continues even if all the temporary storage tanks are full, and the treatment becomes impossible, it is discharged into the river after simple treatment.

  The above series of actions is a specific embodiment corresponding to claims 3 and 5. The third embodiment is different from the first embodiment in that a buffer called a temporary storage tank is essentially provided in each treatment plant, which allows a high load to be discharged into the river during heavy rain or abnormal conditions. It is a point that can reduce the sewage as much as possible. In this invention, when such a buffer is provided, it is shown how the operation of a water accommodation operation pump and the operation of a storage tank should be performed.

<< Effects of Third Embodiment >>
In the third embodiment, the following effects can be mainly obtained.

  In addition to the effects of the first embodiment, when a temporary storage tank is installed at the treatment plant, water interchange and storage tank operation can be achieved by avoiding risks such as abnormal times, reducing costs, and maintaining and improving water quality. It can be carried out considering the three purposes simultaneously.

  There are not many new temporary storage tanks installed in sewage treatment plants, but there are not a few cases that have preliminary reaction tanks and sedimentation basins. In many cases, it is normally unused and free. In such a case, when the present invention is used, the effect of the first embodiment can be further enhanced. That is, the effects of the first embodiment can be further enhanced with the effects of risk avoidance at the time of abnormality, cost reduction, and water quality maintenance / improvement.

<Fourth Embodiment>
<< Configuration of Fourth Embodiment >>
The configuration of the fourth embodiment is shown in FIG. FIG. 8 is obtained by providing a temporary storage tank in the configuration of FIG. That is, the difference between FIG. 1 and FIG. 7 is the same as the difference between FIG. 6 and FIG.

<< Operation of Fourth Embodiment >>
This action is a combination of the action of the first embodiment, the action of the second embodiment, and the action of the third embodiment. The difference between the operation of the second embodiment and the operation of the first embodiment, and the difference between the operation of the third embodiment and the operation of the first embodiment are considered simultaneously. Therefore, the specific procedure of the fourth embodiment is omitted. The fourth embodiment corresponds to claims 4 and 6.

<< Effects of Fourth Embodiment >>
The main effects obtained from this embodiment include the following effects.

  When the pollutant density | concentration of inflow sewage can be measured, the effect of 3rd Embodiment can be improved more.

<Fifth Embodiment>
<< Configuration of Fifth Embodiment >>
The configuration of the fifth embodiment has any one of the configurations of FIGS. 1, 6, 7, and 8 as a basic component, and additionally causes an interrupt operation to be performed. A specific configuration example of the interrupt operation is shown in FIG.

  FIG. 9 assumes that in the configuration of FIG. 1, FIG. 6, FIG. 7, and FIG. That is, the inflow amount or inflow load amount of each treatment plant that changes every moment in a predetermined cycle is measured, and based on this, the pattern determination of water interchange operation, etc. is executed as in the embodiments shown so far. It is assumed that

  In FIG. 9, an abnormality detection unit 6, a discharge load monitoring unit 14, and a river influence degree monitoring unit 15 are added as a basic configuration. The abnormality detection means 6 may be the same as that shown in FIG. 1, FIG. 6, FIG. 7, or FIG. 8, but on the assumption that it is executed at a cycle faster than a predetermined cycle for performing online calculation. Yes.

<< Operation of Fifth Embodiment >>
The operation of the fifth embodiment will be described with reference to FIG.

  First, the abnormality detection means 6 detects an abnormality as shown in each of the embodiments so far. However, the abnormality detection means 6 is not only performed in a predetermined cycle in which online calculation is performed, but frequently in a faster cycle. An abnormality is being detected.

  Further, the discharge load monitoring means 14 monitors the concentration of pollutant substances in the discharged water with a discharged water quality sensor such as BOD, COD, SS, TN, TP, and if necessary, uses a flow sensor that measures the amount of discharged water. These discharge loads (pollutant concentration x discharge water) are calculated and monitored. This monitoring is also performed at a cycle faster than a predetermined cycle for performing online calculation.

  Further, the river influence degree monitoring means 15 performs monitoring by converting the discharge load amount into the influence degree on the river. This is because the influence of the discharge load of a plurality of treatment plants on the river may be different. For example, when a plurality of treatment plants are installed in the downstream direction from the upstream, generally the upstream treatment plant is expected to be naturally purified in the river, and therefore the discharge load may be high to some extent. However, it is not possible to expect natural purification in rivers at downstream treatment plants, so it is preferable to reduce the discharge load as much as possible. The river influence monitoring means takes such influence into consideration, and the river influence degree obtained by multiplying the discharge load quantity or discharge pollutant concentration by a preset river influence degree coefficient is a predetermined cycle for performing online calculation. Monitoring is performed at a faster cycle.

  On the other hand, the operation rule of the water accommodation pump is determined every moment at a predetermined cycle by the method as shown in the operation of the first embodiment to the operation of the fourth embodiment.

  In the fifth embodiment, the abnormality detection unit 6, the discharge load monitoring unit 14, or the river influence degree monitoring unit 15 is monitored at a cycle faster than a predetermined cycle, and an abnormality is detected or the discharge load is deteriorated. When the environmental load on the river becomes high, the operation method of the water accommodation pump is changed by feedback.

  Two methods have been proposed for the change.

  One method is to set a predetermined threshold in advance for the abnormality detection means 6, the discharge load monitoring means 14, or the river influence monitoring means 15, and when the threshold is exceeded, the transportation equipment is operated. Interrupt the possible pattern determination means 7. In addition, the operation of transportation equipment can be interrupted, such as prohibiting the use of water for treatment plants where anomalies are occurring, the discharge load is high, or the environmental impact on the river is large. Perform on the possible patterns and place constraints. In this case, instead of providing only one threshold value, a plurality of threshold values may be provided according to the level, and the method of restricting the operation pattern of the transportation device may be changed for each threshold value.

  Another method is that a predetermined threshold value is set in advance for the discharge load monitoring means 14 or the river influence monitoring means 15, and when the threshold value is exceeded, the transportation device operation pattern determination means 9 In FIG. 5, the evaluation function that minimizes the cost is switched. If the threshold is not exceeded, the operating cost is prioritized and the operating cost OC is optimized to determine the operating pattern of the transportation device such as a water accommodation pump. If the threshold is exceeded, the water quality cost EC is switched. To determine the driving pattern.

  As described above, the water accommodation operation method in which the correction operation by the feedback signal is performed by the interrupt command with respect to the operation rule of the water accommodation pump that is operated at a predetermined cycle is the characteristic operation of the fifth embodiment. This is the operation of the embodiment corresponding to claims 7 to 12.

<< Effect of Fifth Embodiment >>
In the fifth embodiment, the following effects can be mainly obtained.

  The first to fourth embodiments are basically water interchange operation methods based on prediction (or feedforward) based on the inflow amount or inflow load, whereas in the fifth embodiment, Because it is a prediction / correction-type water operation method with a correction / correction (or feedback) element for prediction, corrective operations are performed quickly in response to various abnormalities, deterioration of discharged water quality, and deterioration of river water quality. Water interchange operation becomes possible.

<Sixth Embodiment>
<< Configuration of Sixth Embodiment >>
The configuration of the sixth embodiment has one of the configurations of FIGS. 1, 6, 7 and 8 as a basic component, and additionally has the configuration of FIG. 9 as necessary. The transportation device operation pattern determination means 9 of FIGS. 1, 6, 7, and 8 is replaced with the transportation device optimum operation support means 16 and the transportation equipment operation pattern selection means 17 shown in FIG. It is. The transport device optimum driving support means 16 includes an operable device identification display device 161, a cost display device 162, and an optimum pattern display device 163.

<< Operation of Sixth Embodiment >>
The operation of the sixth embodiment will be described with reference to FIGS. 10, 11, and 12.

  In the sixth embodiment, instead of automatically executing the transportation device operation pattern determination means 9, the operating conditions of the operable water interchange pump and the stored water supply pump are presented to the operator, It is intended to provide auxiliary information for selection by judgment. Only that part is shown.

  First, in the operable device identification display device 161, as shown in FIG. 11, after displaying all the transport devices (water interchangeable pump + reserved water / water pump), which transport device is in a currently operable state, Indicates which transport equipment is inoperable. In FIG. 11, a blue transportation device is in an operable state, and a red transportation device is in an inoperable state. As described above, by using color coding and other means, the operable device identification display device 161 provides the operator with identification information of the transportable device that is operable / impossible.

  Next, the cost display device 162 displays all the operation patterns that can be operated by the transport device operable pattern determination means 7 using the transport devices that can be operated by the operable device identification display device 161. At the same time, the expected cost when each operable pattern is executed is calculated by the cost calculation means 8 and displayed. An example of this is shown in FIG.

  Next, in the optimum pattern display device 163, among the operation patterns that can be operated by the transport device operable pattern determination means 7, the one that has the lowest cost calculated by the cost calculation means 8 is displayed as the optimum pattern. To do. For example, as shown in FIG. 12, a mechanism that can identify the optimum driving pattern among all possible driving patterns may be created.

  By the above operation, the transportation equipment optimum operation support means 16 is executed, and thereby, what kind of operation is possible for the operator and what (predefined) cost is required for each operation. In addition, it is possible to know which operation is optimal from the viewpoint of cost evaluation.

  Next, the transport equipment operation pattern selection means 17 selects the operation pattern that the operator determines to be the best based on the support information presented by the transport equipment optimum operation support means 16. For example, as shown in FIG. 12, a check box or the like may be provided so that any one of the operation patterns can be selected. In this case, normally, the operation pattern determined to be optimal by the transportation equipment optimal operation support means 16 is selected, but the operator considers his / her own determination and another operation pattern that is not the optimal operation pattern. Can also be selected.

  The above is the characteristic operation of the sixth embodiment, and this is the operation of the embodiment corresponding to the thirteenth aspect.

<< Effect of Sixth Embodiment >>
In the sixth embodiment, the following effects can be mainly obtained.

  It is possible to provide extremely useful support information to the operator when the water accommodation operation method is not executed completely automatically but at the operator's discretion.

  Although not considered in claims 1-12, operationally important information can be taken into account indirectly by taking the operator's judgment into the operation rather than fully automatic operation, Safer and more reliable water interchange operation becomes possible.

<< Seventh Embodiment >>
<< Configuration of Seventh Embodiment >>
The configuration of the seventh embodiment has a device for displaying support information as shown in FIG. 13 or 14 in any of the embodiments already shown so far.

<< Operation of Seventh Embodiment >>
The effect | action of 7th Embodiment is demonstrated using FIG. 13 and FIG.

  In this embodiment, when determining the operation method of the water accommodation pump or the stored water pump in each embodiment shown so far, various mode names are given to the determined operation, and the mode is set. It is also displayed.

  FIG. 13 is an example of a mode setting method based on the determination shown in claim 14, and FIG. 14 is an example of a mode setting method based on the determination shown in claim 14.

  The difference between claim 14 and claim 15 is a difference in criteria for mode separation. Although the determination criteria for the abnormal mode are the same, in claim 14, the cost operation mode is defined by focusing on the fact that optimization is performed to minimize the cost when there are a plurality of operable patterns. Yes. When it is not abnormal and cost minimization is not performed, load adjustment is performed so that overflow does not occur at each treatment plant. Therefore, merge mode is used to reduce the river discharge load due to overflow (combined sewage). It is defined as an improvement mode. On the other hand, in claim 15, after selecting the optimal accommodation, paying attention to whether or not overflow (ie, simple discharge or temporary storage) exceeding the normal processing amount has finally occurred, , It is defined as a heavy rain mode in which a large amount of rain is observed so that normal processing is impossible even if accommodation is possible. When overflow does not occur, it is defined as a non-heavy rain mode in the sense that it was fine weather or rainy weather and overflow was avoided by water interchange.

  Although the mode separation differs depending on claims 14 and 15, the operation of the display portion is the same, and the mode determination is performed based on the mode separation determination criteria of each claim, and FIG. 13 or FIG. As shown in FIG. 14, the current operation mode is presented to the operator.

  The above is the characteristic operation of the seventh embodiment, and this is the operation of the embodiment corresponding to claims 14 and 15.

<< Effect of the seventh embodiment >>
In the seventh embodiment, the following effects can be mainly obtained.

  Displaying the operation mode is not essential for water interchange operation, but by defining the operation mode and displaying it to the operator, the water interchange pump and the stored water pump can It is possible to let the operator understand conceptually whether it is operating in a pattern. Therefore, the operator can perform the operation with peace of mind, and as a result, the operation reliability of the water interchange pump and the stored water / water pump is improved.

<< Other Embodiments >>
In each embodiment, the cost calculation means 8 has an input unit for inputting operation device performance such as the rated power consumption and performance curve of the pump and blower, and calculates the cost according to the set device performance. May be. By configuring in this way, it is possible to reflect in the system changes in operating costs at each treatment plant when the equipment is changed with regard to the conditions for equipment suspension and equipment suspension.

  Further, in each embodiment, the cost calculation means 8 may automatically extract inoperable pumps / equipment due to equipment failure / maintenance and calculate the cost only from the operable pump / equipment. With this configuration, it is possible to reflect the actual operating cost in the system according to the failure of the equipment and the maintenance situation regarding the consideration of the conditions of equipment suspension and equipment suspension.

  Moreover, in each embodiment, the cost calculation means 8 may have an operation sequence setting unit that sets an operation sequence, and may perform cost calculation in the set operation sequence. With this configuration, it is possible to reflect in the system changes in operating costs at each treatment plant when the number of operating series changes.

  Further, the abnormality detecting means 6 may have an abnormality diagnosis system based on multivariate statistical process monitoring. For a “process monitoring apparatus” based on multivariate statistical process monitoring, the technique described in Japanese Patent Application Laid-Open No. 2007-65883 may be applied. With this configuration, it is possible to systematically detect various abnormalities that occur in the process, such as sudden disturbances caused by sudden load fluctuations, control system abnormalities, process processing abnormalities, sensor abnormalities, etc. By this, the water interchange pump can be operated more appropriately.

  Furthermore, in each embodiment mentioned above, you may make it provide the inflow water quality abnormality detection apparatus which detects inflow water quality abnormality as the abnormality detection means 6. FIG.

  In this case, the inflow water quality abnormality detection device preferably has the following method.

(1) Install a poison sensor such as a cyan meter or a biosensor to detect an abnormality in the influent water.

(2) Respiratory activity is detected by a respiration rate meter set in the aeration tank, and abnormality is detected when the activity falls below a threshold value.

(3) The pH of the influent water is measured, and when the pH value is not less than the high threshold value and not more than the low threshold value, it is determined as abnormal.

(4) Data on DO and aeration air volume is accumulated, and the relationship between the aeration air volume and DO is broken, and when the DO for the equivalent aeration air volume is too high, it is determined that the biological activity has decreased.

(5) Sampling the influent water, arranging a DO meter, introducing it into a small tank equipped with a DO meter containing activated sludge of a predetermined concentration, measuring the oxygen consumption rate when supplying a predetermined amount of air, When the consumption speed falls below a certain threshold or the rate of change of the consumption speed is very large, it is determined that there is an abnormality.

(6) In the abnormality detection of the above (1) to (6), the sludge of each aeration tank or sludge storage tank or the sludge of another small sludge culture tank can be introduced into the small tank, and an abnormality has occurred. Even in this case, the inflow water is sampled from time to time in the small tank, and the oxygen consumption rate is measured while the sludge in the small tank is sequentially replaced with normal activated sludge, and it is determined that the inflow water is normal when the consumption rate is restored. To do.

(7) Inflow water is sampled and introduced into a batch-type small tank containing organisms such as small fish, and the behavior of the organisms is monitored.

(8) The abnormality is determined by combining the methods (1) to (7).

  Thus, according to this embodiment, appropriate water accommodation can be performed even when inflow water abnormality occurs. In addition, since abnormalities in inflow water usually affect other treatment plants, as described in claim 7, the restriction on the operable pattern is that the flexibility to the own treatment plant is stopped and at the same time the other treatment plant is transferred. As a result, in the case of an inflow water abnormality, no accommodation for the treatment plant is performed.

The block diagram in the case of implementing the water interchange operation apparatus between the sewage treatment plants of this invention on the assumption of the water operation between two treatment plants (when based on inflow amount). Explanatory drawing which shows the parameter setting method for estimating the air volume and flow volume of a blower or a pump from inflow volume (when ratio constant control is assumed). Explanatory drawing which shows the parameter setting method for estimating the air volume and flow volume of a blower or a pump from inflow volume (when not assuming constant ratio control). Explanatory drawing which shows the example (A processing plant) which expressed the relational expression of inflow amount and various operation costs with the graph. Explanatory drawing which shows the example (B processing plant) which expressed the relational expression of inflow amount and various operation costs with the graph. The block diagram in the case of implementing the water interchange operation apparatus between the sewage treatment plants of this invention on the assumption of the water operation between two treatment plants (when based on inflow load amount). The block diagram of the case where it implements the water accommodation operation apparatus between the sewage treatment plants of this invention on the assumption of the water operation between two treatment plants (when using a storage tank together and based on inflow). The block diagram of the case where it implements the water interchange operation apparatus between the sewage treatment plants of this invention on the assumption of the water operation between two treatment plants (when using a storage tank together and based on an inflow load amount). Explanatory drawing which shows the method of taking in various feedback information and implementing by interruption processing, when the water accommodation operation apparatus between the sewage treatment plants of this invention is performed with a predetermined period. The block diagram which showed the change of the apparatus in the case of setting it as the structure which provides the support information to an operator, without implementing automatically the water interchange operation apparatus between the sewage treatment plants of this invention. Explanatory drawing which shows the example of the display for identifying the transport apparatus (water interchangeable pump + stored water water pump) which can be drive | operated. Explanatory drawing which shows the example showing the display method of all the patterns which can be drive | operated, the display method of the cost for every pattern, the display method of the optimal driving | operation pattern, and the method for an operator to select a driving | operation pattern. Explanatory drawing which shows the example which displays the present operation mode. Explanatory drawing which shows the example which displays the present operation mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... River basin treatment plant group 1A1 ... A treatment plant 1A2 ... A drainage zone 1A3 ... Connecting pipe coupling part 1A4 ... A → B coupling pipe 1A5 ... A → B water interchangeable pump 1A6 ... A treatment plant inflow sensor 1A7 ... A treatment 1A8 ... A treatment plant excess sludge concentration sensor 1A9 ... A treatment plant blower / pump flow sensor 1A10 ... A treatment plant inflow pollutant sensor 1A11 ... A treatment plant storage tank 1A12 ... A treatment plant storage water supply Pump 1A13 ... A treatment plant storage volume sensor 1B1 ... B treatment plant 1B2 ... B drainage zone 1B3 ... Connecting pipe coupling part 1B4 ... B → A connecting pipe 1B5 ... B → A water interchangeable pump 1B6 ... B treatment plant inflow amount sensor 1B7 ... B treatment plant abnormality detection process sensor 1B8 ... B treatment plant surplus sludge concentration sensor 1B9 ... B treatment plant blower / pump flow sensor 1B10 ... B treatment plant inflow contamination Substance sensor 1B11 ... B treatment plant storage tank 1B12 ... B treatment plant storage water pump 1B13 ... B treatment plant storage amount sensor 2 ... Process data collection / storage unit 21 ... Process online measurement data collection / storage unit 22 ... Process information data Collecting / storing unit 3 ... Maximum water volume determination means 4 ... Cost calculation parameter setting means 5 ... Inflow amount calculation means 6 ... Abnormality detection means 7 ... Transport equipment operation possible pattern determination means 8 ... Cost calculation means 9 ... Transport equipment operation pattern Determining means 10 ... Sewage treatment method determining means 11 ... Maximum load amount determining means 12 ... Inflow load amount calculating means 13 ... Storage amount calculating means 14 ... Discharge load monitoring means 15 ... River impact monitoring means 16 ... Optimal operation of transport equipment Supporting means 161 ... operable device identification display device 162 ... cost display device 163 ... optimum pattern display device 17 ... transportation equipment operation pattern selecting means

Claims (20)

Each treatment plant is connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transportation capacity is installed in each treatment plant. A water interchange operation device for a treatment plant group configured to perform mutual water interchange between the sites through the connecting pipe,
A maximum treatable water amount determining means for determining the maximum treatable water amount for each treatment plant;
Inflow amount calculating means for obtaining the inflow amount to each treatment plant;
Cost calculating means for determining the cost at each treatment plant with the inflow amount determined by the inflow amount calculating means as at least one input;
An anomaly detection means for detecting various anomalies occurring in each treatment plant and generating anomaly information;
Based on the inflow amount obtained by the inflow amount calculating means, the maximum treatable water amount determined by the maximum treatable water amount determining means, and the abnormality information detected by the abnormality detecting means, it is installed in each treatment plant. A transport device operable pattern determining means for determining an operable pattern of the interchangeable water transport device;
When the transport equipment operable pattern determined by the transport equipment operable pattern is uniquely determined, it is regarded as an operation pattern, and when the transport equipment operable pattern is not uniquely determined and a plurality of operation patterns can be selected, A transport device operation pattern determining means for determining an operation pattern of the accommodation water transport device that minimizes the cost calculated by the cost calculation means;
If the amount of inflow into each treatment plant when operating the interchangeable water transportation device according to the transportation device operation pattern does not exceed the maximum amount of water that can be treated in each treatment plant, normal treatment is performed. A sewage treatment method determining means for performing post discharge or direct discharge;
A water interchange operation device characterized by comprising: Each treatment plant is connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transportation capacity is installed in each treatment plant. A water interchange operation device for a treatment plant group configured to perform mutual water interchange between the sites through the connecting pipe,
A maximum processable load determining means for determining a maximum processable load (= water quantity × contaminant concentration) for each treatment plant;
Inflow amount calculating means for obtaining the inflow amount to each treatment plant;
Inflowing pollutant concentration calculating means for obtaining the pollutant concentration flowing into each treatment plant,
An inflow load amount calculating means for obtaining an inflow load amount (= inflow amount × inflow pollutant concentration) from the inflow amount determined by the inflow amount calculating means and the inflow pollutant concentration calculated by the inflow pollutant concentration calculating means;
Cost calculating means for determining the cost at each treatment plant with the inflow load amount determined by the inflow load amount calculating means as at least one input;
An anomaly detection means for detecting various anomalies occurring in each treatment plant and generating anomaly information;
Based on the inflow load amount determined by the inflow load amount calculation means, the maximum processable load amount determined by the maximum processable load amount determination means, and the abnormality information generated by the abnormality detection means, each processing place A transport device operable pattern determining means for determining an operable pattern of the flexible water transport device installed in the vehicle;
If the transport device operable pattern is uniquely determined, it is used as an operation pattern. If the transport device operable pattern is not uniquely determined and a plurality of operation patterns can be selected, the cost calculated by the cost calculating means is calculated. A transportation device operation pattern determination means for determining an operation pattern of the flexible water transportation device that minimizes
If the amount of inflow into each treatment plant when operating the flexible water transportation device according to the transportation device operation pattern does not exceed the maximum load capacity that can be handled by each treatment plant, normal processing is performed. Sewage treatment method determining means for discharging after treatment or directly discharging;
A water interchange operation device characterized by comprising: Each treatment plant is connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transportation capacity is installed in each treatment plant. While it is configured so that water can be interchanged between the stations through the connecting pipes, a storage tank or a non-operating reaction tank or a non-operating settling basin for temporarily storing inflow water in each treatment plant And a storage water return transport device having a predetermined number and a predetermined transport capacity, and using this stored water return transport device, the stored water stored in the storage tank is transferred to the treatment tank. A water interchange operation device for a treatment plant group configured to send back,
A maximum treatable water amount determining means for determining the maximum treatable water amount for each treatment plant;
Inflow amount calculating means for obtaining the inflow amount to each treatment plant;
A cost calculating means for obtaining a cost with the inflow amount determined by the inflow amount calculating means as at least one input;
An anomaly detection means for detecting various anomalies occurring in each treatment plant and generating anomaly information;
A storage amount calculating means for determining a storage amount stored in the storage water of each treatment plant;
The inflow amount calculating means, the maximum treatable water amount determining means, the abnormality detecting means, and the stored amount calculating means are operable patterns of the interchangeable water transport equipment and the stored water return transport equipment installed in each treatment plant. A transport equipment operable pattern determining means for determining
If the transport device operable pattern is uniquely determined, it is used as an operation pattern. If the transport device operable pattern is not uniquely determined and a plurality of operation patterns can be selected, the cost calculated by the cost calculating means is calculated. A transportation device operation pattern determining means for determining a transportation device operation pattern that minimizes
When the amount of inflow into each treatment plant when the interchangeable water transportation device is operated according to the transportation device operation pattern does not exceed the maximum treatable water amount Q ^max _i (i = 1,..., M) of each treatment plant When the normal treatment is performed, and when exceeding the sewage treatment method determining means for performing discharge after the simple treatment or direct discharge when exceeding the storage tank volume after storing in the storage tank,
A water interchange operation device characterized by comprising: Each treatment plant is connected to each other through a connecting pipe, and a flexible water transport device having a predetermined number and a predetermined transportation capacity is installed in each treatment plant. While it is configured so that water can be interchanged between the stations through the connecting pipes, a storage tank or a non-operating reaction tank or a non-operating settling basin for temporarily storing inflow water in each treatment plant And a storage water return transport device having a predetermined number and a predetermined transport capacity, and using this stored water return transport device, the stored water stored in the storage tank is transferred to the treatment tank. A water interchange operation device for a treatment plant group configured to send back,
A maximum processable load determining means for determining a maximum processable load (= water quantity × contaminant concentration) for each treatment plant;
Inflow amount calculating means for obtaining the inflow amount to each treatment plant;
Inflowing pollutant concentration calculating means for obtaining the pollutant concentration flowing into each treatment plant,
An inflow load amount calculating means for obtaining an inflow load amount (= inflow amount × inflow pollutant concentration) from the inflow amount determined by the inflow amount calculating means and the inflow pollutant concentration calculated by the inflow pollutant concentration calculating means;
Cost calculating means for determining the cost at each treatment plant with the inflow load amount determined by the inflow load amount calculating means as at least one input;
An anomaly detection means for detecting various anomalies occurring in each treatment plant and generating anomaly information;
A storage amount calculating means for determining a storage amount stored in the storage water of each treatment plant;
Storage pollutant concentration calculation means for obtaining the pollutant concentration of the stored water in each treatment plant,
A storage load amount calculating means for calculating a storage load amount (= storage amount × storage contaminant concentration) calculated from the storage amount calculating means and the stored pollutant concentration calculating means;
By the inflow load amount determined by the inflow load amount calculation means, the maximum processable load amount determined by the maximum processable load amount determination means, the abnormality information generated by the abnormality detection means, and the stored load amount calculation means Transport equipment operable pattern determination means for determining each operable pattern of the interchangeable water transport equipment and the stored water return transport equipment installed in each treatment plant based on the determined storage load amount,
If the transport device operable pattern is uniquely determined, it is used as an operation pattern. If the transport device operable pattern is not uniquely determined and a plurality of operation patterns can be selected, the cost calculated by the cost calculating means is calculated. Transportation device operation pattern determination means for determining each operation pattern of the flexible water transportation device and the stored water return transportation device, which minimizes
If the inflow amount to each treatment plant when operating the interchangeable water transportation device according to the transportation device operation pattern does not exceed the maximum load capacity that can be handled by each treatment plant, normal processing is performed. When the storage tank volume is exceeded after storage in the tank, the sewage treatment method determining means for discharging after simple processing or directly discharging,
A water interchange operation device characterized by comprising: In the water interchange operation apparatus according to claim 1 or claim 3,
The inflow amount calculating means is a means for obtaining at least one of an inflow amount measured value obtained by a sensor for measuring an inflow amount into a treatment plant or an inflow amount predicted value obtained by an inflow amount prediction device for predicting the inflow amount. Yes,
The cost calculating means includes
An operation for estimating the flow rate / flow rate of the blower or pump of the treatment plant with at least one input of the measured flow rate value or the predicted flow rate value obtained by the flow rate calculation means, and calculating the total operating cost of these devices Cost calculation means,
Alternatively, the flow rate / air flow rate of the blower or pump of the treatment plant is estimated using at least one input of the flow rate measurement value or the flow rate prediction value obtained by the flow rate calculation means, and the flow rate measurement value or flow rate obtained is estimated. Water quality cost calculation that estimates the discharge load expressed by the pollutant concentration of the discharge water x discharge water volume from the predicted volume and the flow rate and air volume of various devices, and calculates the water quality cost by converting the discharge pollution load into monetary value means,
Alternatively, a total cost calculating means for calculating a total cost that is a sum of the operating cost determined by the operating cost calculating means and the water quality cost determined by the water quality calculating means,
A water interchange operation device characterized by being any one of the above. In the water accommodation operation apparatus according to claim 2 or claim 4,
The inflow amount calculating means is a means for obtaining at least one of an inflow amount measured value obtained by a sensor for measuring an inflow amount into a treatment plant or an inflow amount predicted value obtained by an inflow amount prediction device for predicting the inflow amount. Yes,
The inflowing pollutant concentration calculating means is a means for obtaining at least one of the pollutant concentration measurement value obtained by a sensor for measuring the pollutant concentration flowing into the treatment plant or the pollutant concentration prediction value obtained by the pollutant concentration prediction device. And
The cost calculating means includes
The inflow load amount calculated by the inflow load amount calculation means is estimated as at least one input to estimate the air volume / flow rate of the blower or pump of the treatment plant, and the operation cost calculation means for calculating the sum of the operation costs of these devices,
Alternatively, the flow rate / air volume of the blower or pump of the treatment plant is estimated using at least one input of the inflow load quantity obtained by the inflow load quantity calculating means, and the obtained inflow load quantity and the estimated flow rates of various devices A water quality cost calculation means for estimating the discharge load amount represented by the pollutant concentration of the discharge water x the discharge water amount from the air volume and calculating the water quality cost by converting the discharge pollution load into a monetary amount,
Alternatively, a total cost calculating means for calculating a total cost that is a sum of the operating cost determined by the operating cost calculating means and the water quality cost determined by the water quality calculating means,
A water interchange operation device characterized by being any one of the above. In the water accommodation operation apparatus according to any one of claims 1 to 6,
When an abnormality is detected by the abnormality detection means, water treatment is prohibited from being performed on the treatment plant where the abnormality is detected, and whether the detected abnormality affects only the own treatment plant or other treatment plant A determination means for determining whether the person affects the transportation apparatus, and when it is determined that the abnormality affects the other treatment plant, the transportation equipment is operated by an interruption operation so as to prohibit water interchange to the other treatment plant. Correct driving patterns,
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
A discharge load calculation device for determining the pollutant concentration or discharge pollutant load (discharge pollutant concentration x discharge flow rate) of the discharge water from each treatment plant;
A discharge load quality determination device for determining whether the discharge water pollutant concentration or discharge pollution load amount is high (bad) or low (good);
When there is a treatment plant where the discharge water pollutant concentration or the discharge pollutant load amount is judged to be bad by the discharge load judgment device, water treatment is prohibited and detected for the treatment plant. A determination means is provided for determining whether the abnormality affects only the own treatment plant or other treatment plants. If it is determined that the abnormality affects other treatment plants, water interchange to other treatment plants is possible. Modify the transportation equipment operation pattern by interrupting operation to prohibit
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
A discharge load calculation device for obtaining a discharge pollution load amount (discharge pollutant concentration x discharge flow rate) from each treatment plant,
A river impact degree calculation means that calculates the river impact degree by setting the river impact degree coefficient considering the effect of the discharged pollutant load quantity on the river environment and multiplying the discharge load quantity from each treatment plant and the river impact degree coefficient ,
A river influence degree pass / fail judgment device for judging whether the river influence degree calculated by the river influence degree calculating means is high (bad) or low (good);
When there is a treatment plant where the river influence degree is judged to be high by the river influence degree acceptance / rejection determination device, water treatment is prohibited for the treatment plant, and the cause of the river influence degree becoming high is It has a judgment means to judge whether it affects only its own treatment plant or other treatment plant, and if it is determined that the cause of the river influence is affecting the treatment plant, the other treatment plant Modify the transportation equipment operation pattern by interrupting operation to prohibit water accommodation
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 7 to 9,
It is characterized by having a judgment level of 3 or more instead of a binary judgment of presence / absence of abnormality / high / low discharge pollution load / high / low river impact.
Depending on the level of abnormal level / discharge pollution load level / river impact level, water that can provide water interchange to treatment plants with abnormalities / treatment plants with high discharge pollutant load loads / treatment plants with high river impact levels Modify the transportation equipment operation pattern to limit the number of flexible transportation equipment;
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
A discharge load computing device that measures or estimates the pollutant concentration or discharge pollutant load (discharge pollutant concentration x discharge flow rate) from each treatment plant,
A discharge load quality determination device that determines whether the discharge water pollutant concentration or discharge pollution load is high (bad) or low (good);
In a treatment plant where the discharge water pollutant concentration or discharge pollutant load is determined to be bad by the discharge load determination device, a water treatment cost EC or total cost is adopted as the cost calculation means, and the treatment plant determined to be good. Then, the operation cost is adopted as the cost calculation means.
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
A discharge load calculation device that measures or estimates the discharge pollution load amount (discharge pollutant concentration x discharge flow rate) from each treatment plant,
A river impact degree calculation means that calculates the river impact degree by setting the river impact degree coefficient considering the effect of the discharged pollutant load quantity on the river environment and multiplying the discharge load quantity from each treatment plant and the river impact degree coefficient ,
A river influence degree pass / fail judgment device for judging whether the river influence degree calculated by the river influence degree calculating means is high (bad) or low (good);
In the treatment plant where the river influence degree is determined to be high by the river influence degree acceptance / rejection determination device, the water quality cost EC or the total cost TC is adopted as the cost calculation means. Adopting the operating cost OC as the calculation means,
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
In place of the transport device operation pattern determining means, an operable transport device identification display device that displays the transportable transport device determined by the transport device operable pattern determination means and the remaining inoperable transport device so that they can be identified. When,
A cost display device that displays the cost for each operation pattern calculated by the cost calculation means attached to a transportable device of the display device;
Preferably, an optimum operation pattern display device that advises selection of an operation pattern with the minimum cost calculated by the cost calculation means,
A transportation device optimum operation support means,
Based on the information provided by the transport equipment optimum operation support means, the transport equipment operation pattern selection means for determining which operation pattern the operator selects,
A water interchange operation device characterized by comprising: In the water accommodation operation apparatus according to any one of claims 1 to 6,
A case where an abnormality is detected by the abnormality detection means is referred to as “abnormal mode”
When there are a plurality of drivable patterns by the transport device drivable pattern determination means instead of the “abnormal mode”, the “cost driv
If it is neither “abnormal mode” nor “cost operation mode”, it is designated as “merge improvement mode”
It has an operation mode display device for displaying in which mode of these “abnormal mode”, “cost operation mode”, and “joining improvement mode”,
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
A case where an abnormality is detected by the abnormality detecting means is referred to as “abnormal mode”,
Not the “abnormal mode” but the operation possible pattern by the transportation device operation pattern determining means is uniquely determined, and the case where storage or simple discharge occurs is referred to as “heavy rain mode”,
If it is neither “abnormal mode” nor “heavy rain mode”, it is called “non-heavy rain mode”
It has an operation mode display device that displays in which of these "abnormal mode", "heavy rain mode", and "non-heavy rain mode",
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
The cost calculation means has an input unit for inputting operation device performance such as rated power consumption and performance curve of the pump and blower, and calculates the cost according to the set device performance.
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
The cost calculation means automatically extracts inoperable pumps / equipment due to equipment failure / maintenance, and calculates the cost only from the operable pump / equipment,
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
The cost calculation means has an operation series setting unit for setting an operation series, and performs cost calculation in the set operation series.
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
The abnormality detection means has an abnormality diagnosis system based on multivariate statistical process monitoring.
Water interchange operation device characterized by that. In the water accommodation operation apparatus according to any one of claims 1 to 6,
As the abnormality detection means, it has an inflow water quality abnormality detection device,
Water interchange operation device characterized by that.

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