Biological treatment method for organic waste and biological treatment system for organic waste

Abstract

To provide a biological treatment method for organic waste and a biological treatment system for organic waste.SOLUTION: Provided is a biological treatment method for organic waste including the steps of: sorting and storing accepted organic waste on the basis of raw material information including information on an acceptance quantity of the accepted organic waste and a component composition of the accepted organic waste; preparing storage information on the accepted organic waste after the sorting; determining an input condition of the accepted organic waste to a biological treatment tank for biological treatment of the accepted organic waste; and performing biologically treatment of the accepted organic waste on the basis of the input condition. The step of determining the input condition determines the input condition of the accepted organic waste on the basis of inhibitory component information on inhibitory components that cause treatment inhibition in the biological treatment tank, contained in the accepted organic waste after the sorting and operation information on the biological treatment tank.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a biological treatment method for organic waste and a biological treatment system for organic waste. [Background technology]

[0002] There are known biomass treatment facilities that biologically treat organic waste such as food waste, food processing residues, food waste, etc. In such biomass treatment facilities, a wide variety of organic waste is received as treatment raw materials from food factories, beverage factories, restaurants, etc., and the treatment raw materials are subjected to methane fermentation, and the generated biogas is used as fuel.

[0003] For example, Japanese Patent Application Laid-Open No. 2008-253870 (Patent Document 1) describes an example of a methane fermentation control system that can control methane fermentation so that it is carried out appropriately by adjusting the amount of biomass introduced into a methane fermentation tank.

[0004] Japanese Patent Laid-Open Publication No. 2007-98369 (Patent Document 2) describes a management system for biological treatment of organic waste equipped with a control center that acquires waste information from organic waste generators and treatment status information from treatment facilities that biologically treat organic waste via a network. Patent Document 2 describes that, among the treatment information, the current treatment status is compared with the maximum allowable range of waste that can be accepted at the treatment facility, and the difference is compared with waste property data to create an organic waste collection plan. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2008-253870 A [Patent Document 2] JP 2007-98369 A Summary of the Invention [Problem to be solved by the invention]

[0006] As described in Patent Documents 1 and 2, various methods for efficiently using organic waste as a biomass raw material have been proposed. However, organic waste has a wide variety of compositions, and the composition varies depending on the source of discharge, so if the waste is treated in the order of receipt, there may be an excess or deficiency of nutrients, etc., which may lead to poor treatment. In addition, depending on the combination of raw materials, scale may form in the biological treatment tank or treatment may deteriorate. For this reason, it is preferable to feed raw materials into the biological treatment tank so that there is no bias in composition, but since composition analysis and preparation of the input raw materials take time and effort, there is still room for further study in terms of improving the efficiency and stabilization of treatment.

[0007] In view of the above problems, the present invention provides a biological treatment method for organic waste and a biological treatment system for organic waste that can improve the treatment efficiency of organic waste and enable stable treatment for a long period of time while suppressing deterioration of treatment in the biological treatment tank. [Means for solving the problem]

[0008] In one aspect, the biological treatment method for organic waste of the present invention is a method for biological treatment of organic waste comprising the steps of: preparing raw material information including information on the amount of received organic waste and the component composition of the received organic waste based on reception information for the received organic waste; classifying the received organic waste by component composition and storing it based on the raw material information; determining input conditions including the amount and timing of input of the stored received organic waste to the biological treatment device based on operation information of the biological treatment device that biologically treats the received organic waste, storage information including information on the component composition and received amount of the received organic waste after classification, and inhibitory component information including concentration information of inhibitory components contained in the received organic waste that are factors that cause inhibition of biological treatment; and biologically treating the received organic waste based on the input conditions.

[0009] In one embodiment, the biological treatment method for organic waste of the present invention further includes a step of acquiring the biological treatment results of the biological treatment device, and a step of correcting the input conditions based on the biological treatment results.

[0010] In another embodiment, the method for biological treatment of organic waste of the present invention further comprises a step of post-treating the sludge and treatment liquid obtained by the biological treatment of the received organic waste using a post-treatment device, and a step of correcting the input conditions of the biological treatment device based on the treatment results of the post-treatment device.

[0011] In yet another embodiment of the organic waste biological treatment method of the present invention, the treatment inhibition includes any one of a deterioration in the properties of the treated sludge or treated liquid treated in the biological treatment device, a decrease in the amount of biogas generated, foaming, poor dewaterability of the treated sludge, and a deterioration in the water quality of the dehydrated filtrate.

[0012] In yet another embodiment of the organic waste biological treatment method of the present invention, the step of preparing raw material information includes preparing concentration information of one or more components selected from the group consisting of proteins, lipids, carbohydrates, sodium, nitrogen, phosphorus, calcium, magnesium, iron, nickel, and cobalt per unit weight as the component composition of the received organic waste, based on any one of past component analysis results of the received organic waste, nutrient component display information of the received organic waste, treatment history information of the biological treatment device, or simple analysis results by near-infrared spectroscopy.

[0013] In yet another embodiment of the organic waste biological treatment method of the present invention, the step of classifying and storing the received organic waste according to its component composition based on the raw material information includes storing the received organic waste in multiple categories according to the component concentrations.

[0014] In yet another embodiment of the organic waste biological treatment method of the present invention, the step of determining the input conditions includes a step of determining the input order of the stored received organic waste based on the type or concentration of inhibitory components contained in the stored received organic waste.

[0015] In yet another embodiment, the biological treatment method for organic waste of the present invention further includes a step of preparing a document including at least any one of raw material information, storage information, input conditions, and information on the treatment results of the biological treatment device for the received organic waste.

[0016] In another aspect, the present invention is a biological treatment system for organic waste comprising a storage facility that separates and stores received organic waste based on raw material information of the received organic waste, a biological treatment device that inputs the received organic waste from the storage facility for biological treatment, and a control device that controls the amount and timing of input of the stored received organic waste to the biological treatment device based on operating information of the biological treatment device, storage information including information on the component composition and received amount of the received organic waste after separation stored in the storage facility, and inhibitory component information including concentration information of inhibitory components contained in the received organic waste that are factors that cause inhibition of biological treatment.

[0017] In yet another aspect, the present invention is an operational support system for the biological treatment of organic waste comprising: a raw material information database having raw material information including, for each type of received organic waste, information on the received amount, the calorific value of the received organic waste, and the component composition of the received organic waste; a storage information database storing storage information for classifying and storing the received organic waste in a storage facility based on the raw material information; and an operational information creation means for creating input conditions including the amount and timing of input of stored received organic waste to the biological treatment device based on operation information of a biological treatment device that biologically treats the received organic waste, storage information including information on the component composition and received amount of the received organic waste after classification, and inhibitory component information including concentration information of inhibitory components contained in the received organic waste that inhibit treatment of biological treatment.

[0018] In one embodiment, the operational support system for biological treatment of organic waste of the present invention further includes an acceptance plan creation means for creating recommended acceptance plan information that optimizes the amount of organic waste received at the storage facility or the treatment conditions of the biological treatment device based on the acceptance information of the received organic waste. Effect of the Invention

[0019] According to the present invention, it is possible to provide a biological treatment method and a biological treatment system for organic waste that can improve the treatment efficiency of organic waste and enable stable treatment for a long period of time while suppressing deterioration of treatment in the biological treatment tank. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a block diagram showing an example of a biological treatment system for organic waste according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a flow diagram showing an example of a method for biological treatment of organic waste according to a first embodiment of the present invention. [Diagram 3] FIG. 4 is a flow diagram showing an example of a processing flow of a first process. [Figure 4] FIG. 11 is a flow diagram showing an example of a processing flow of a second process. [Diagram 5] FIG. 11 is a flow diagram showing an example of a processing flow of a third process. [Figure 6] FIG. 11 is a flow diagram showing an example of a processing flow of a fourth step. [Figure 7] FIG. 11 is a block diagram showing an example of a biological treatment system for organic waste according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. Note that the embodiment shown below is an example of an apparatus and method for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not limit the structure, arrangement, etc. of the components to those described below.

[0022] (First embodiment) -Biological treatment system- As shown in FIG. 1, the biological treatment system for organic waste according to the first embodiment of the present invention comprises a storage facility 2 for storing organic waste (hereinafter referred to as "received organic waste") discharged from organic waste discharge facilities 1A, 1B, 1C, etc., which discharge organic waste, treatment facilities 3 and 5 for biologically treating the received organic waste stored in the storage facility 2, and an operation support system 4 equipped with a control device 40.

[0023] Discharge facilities 1A, 1B, and 1C are facilities that discharge organic waste. For example, discharge facilities 1A, 1B, and 1C are composed of various facilities such as beverage factories, food processing factories, food manufacturing factories, fertilizer manufacturing factories, machine factories, automobile factories, shopping centers, restaurants, supermarkets, hotels, and hospitals.

[0024] The storage facility 2 classifies the received organic waste into multiple categories (first category 2a, second category 2b, third category 2c, fourth category 2d, ...) based on the raw material information of the received organic waste sent from the discharge facilities 1A, 1B, 1C, and stores the same. Details of the classification and storage method based on the raw material information of the received organic waste will be described later.

[0025] The treatment facilities 3 and 5 are facilities for recycling the received organic waste by biological treatment into biomass energy, etc., and may include, for example, a biological treatment device 30 and a post-treatment device 300. The biological treatment device 30 is a device for performing biological treatment using microorganisms, and typically, a digestion tank (fermentation tank) or the like for performing anaerobic digestion treatment using anaerobic microorganisms can be used. The anaerobic digestion treatment may be either a medium-temperature methane fermentation at 30 to 40°C or a high-temperature methane fermentation at 50 to 60°C. The post-treatment device 300 is equipped with a device for treating the sludge and treatment liquid treated in the biological treatment device 30, and typically, an activated sludge tank, a nitrification and denitrification tank, a dehydrator, a thickener, or the like can be used. In the treatment facilities 3 and 5, biological treatment can be selected according to the composition of the received organic waste. For example, depending on the composition of the received organic waste, it may be input into an activated sludge tank or the like provided in the post-treatment device 300 without passing through the biological treatment device 30. A portion of the received organic waste that has a low organic matter concentration and is not suitable for anaerobic digestion may be fed into a nitrification / denitrification tank or the like provided in the post-treatment device 300 as a hydrogen donor for nitrogen removal.

[0026] The operation support system 4 is composed of so-called general-purpose computers, servers, workstations, tablet terminals, etc. The operation support system 4 includes a control device 40 that controls various information processing and storage equipment 2 and processing facilities 3 and 5, a raw material information database (hereinafter referred to as "DB") 51 as a storage means for storing the results of processing by the control device 40 and information necessary for processing, a storage information DB 52, an operation information DB 53, and a feedback (FB) information DB 54.

[0027] 1 shows an example in which the operation assistance system 4 is typically connected to the storage facility 2 and the processing facilities 3 and 5 via a network 6, but is not limited to this example. For example, a computer device equivalent to the operation assistance system 4 in FIG. 1 or capable of executing part of the functions of the operation assistance system 4 may be disposed in each of the storage facility 2 and the processing facilities 3 and 5, and the desired processing may be executed within each computer device.

[0028] The control device 40 includes raw material information creating means 41, storage information creating means 42, and operation information creating means 43. The raw material information creating means 41 creates raw material information for each type of received organic waste sent from the discharge facilities 1A, 1B, 1C, including information such as the received amount, the calorific value of the received organic waste, the component composition of the received organic waste, and the amount and type of inhibitors contained in the organic waste.

[0029] The storage information creating means 42 creates storage information for storing the received organic waste in the storage equipment by dividing it into multiple categories based on its characteristics based on the raw material information. The operation information creating means 43 creates input control conditions including the input amount and input timing of the received organic waste stored in the storage facility 2 to the biological treatment equipment 30.

[0030] The raw material information DB51 stores various information on the received organic waste as raw material. For example, as shown in FIG. 2, the raw material information DB51 can store the source, date, and received amount (weight and / or volume) of the received organic waste, as well as the calorific value of the received organic waste, the results of a simple analysis of the received organic waste, component composition information, past component composition determination data, manifest information of the received organic waste, and representative product information of the source. The component composition information includes the three major nutrients, protein, lipid, and carbohydrate, as well as concentration information of each element component such as sodium, nitrogen, phosphorus, calcium, magnesium, iron, nickel, and cobalt. The past component composition determination data includes component composition information of the received organic waste previously treated at the treatment facilities 3 and 5 or other treatment facilities not shown, past treatment results in laboratory tests, manifest information of the received organic waste previously treated, and the standard food composition table attached to foods, etc.

[0031] The storage information DB 52 stores the storage period, classification destination, calorific value, component composition information and weight of the received organic waste after classification, etc., of the received organic waste stored in the storage facility 2. The component composition information of the received organic waste after classification stores component composition information for each classification of the received organic waste after classification, calorific value, and inhibitory component information including concentration information of inhibitory components that will cause inhibition of biological treatment when input into the biological treatment device 30 and post-treatment device 300.

[0032] The inhibitory component information includes, for example, concentration information of components such as lipids or foaming substances that may cause foaming in the treatment liquid in the biological treatment device 30; concentration information of sodium, nitrogen, sulfates, etc. that inhibit, for example, fermentation treatment, etc. in the biological treatment device 30; concentration information of components such as calcium or magnesium that cause scale formation in the biological treatment device 30 and post-treatment device 300; information on combinations of components that cause treatment inhibition when a component contained in one received organic waste and a component contained in another received organic waste are treated simultaneously in the biological treatment device 30; concentration information of indigestible components such as artificial sweeteners, etc.

[0033] In addition, inorganic salts capable of promoting the growth of microorganisms used in biological treatment include, for example, one or more components selected from calcium, magnesium, iron, nickel, cobalt, potassium, sodium, zinc, selenium, tungsten, molybdenum, copper, manganese, aluminum, sulfur, etc. However, these can also become inhibitors that inhibit biological treatment when present in high concentrations, and conversely, biological treatment is inhibited when they are insufficient or deficient. Therefore, such components may also be included in the inhibitory component information of the present invention.

[0034] The operation information DB 53 stores current and past operation information of the storage equipment 2 and the treatment facilities 3 and 5. In the case where the biological treatment device 30 is a fermenter that performs methane fermentation treatment, the operation information includes the total solids concentration (TS) of the raw material fed into the fermenter, the amount of biogas generated, the biogas composition (CH4, CO2, H2S, etc.), pH, treatment temperature, residence time, organic load, ammonia nitrogen concentration, types and dosing rates of chemicals such as antifoaming agents, types and dosing rates of flocculants used in the dehydrator 301, amounts of sludge and treated liquid generated, etc.

[0035] The FB information DB 54 stores measurement data of the biological treatment device 30 (biological treatment device measurement data), measurement data of the dehydrator 301 (see Figure 2) included in the post-treatment device 300 (dehydrator measurement data), measurement data of the water treatment device 302 included in the post-treatment device 300 (nitrification and denitrification data), and utility data including information on the costs of electricity, gas, water, chemicals, etc. associated with each process of the biological treatment device 30 and the post-treatment device 300.

[0036] -Biological treatment method- 2 shows a typical process flow of the biological treatment method according to the first embodiment. The biological treatment method according to the first embodiment includes a first step of receiving received organic waste and preparing reception information for the received organic waste, a second step of preparing storage information for classifying and storing the received organic waste based on the raw material information and storing the received organic waste in a storage facility 2, and a third step of determining and controlling input conditions including the input amount, input timing, input sequence, etc. of the received organic waste stored in the storage facility 2 to the biological treatment device 30. The biological treatment method according to the first embodiment may further include a fourth step of correcting the input conditions based on the treatment results of the treatment facility 3 including the biological treatment device 30, the dehydrator 301, and the water treatment device 302.

[0037] -1st process- In the first step, as shown in Figures 2 and 3, the received organic waste is received (received waste receiving step S1). Then, based on the receiving information of the received organic waste, the properties of the received organic waste are determined (received organic waste properties determining step S11), and a raw material information DB51 for the received organic waste is created (raw material information creating step S12).

[0038] Specifically, as shown in FIG. 3, when the received organic waste is received in step S1, the raw material information creating means 41 determines the properties of the received organic waste in step S11. First, in step S111, the raw material information creating means 41 determines whether information including past analysis results stored in the raw material information DB 51 can be used when determining the properties of the received organic waste, or whether representative product information such as nutrient component labeling attached to the processed food can be used if the received organic waste is a processed food. For example, when the received organic waste is a processed food or drinking water, a large amount of similar inventory items are often transported on the transported pallet, and such processed food often has information such as nutrient component labeling attached. In addition, waste generators generally attach a large amount of information including the composition of the composition to the received organic waste in advance in order to discharge it. By using such information, the composition of the composition of the received organic waste can be determined more quickly and easily.

[0039] In addition, since a new treatment facility does not have existing treatment record information, it may take time to determine the properties and analyze the received organic waste. In step S111, by using the information attached to the received organic waste and the treatment record information at other treatment facilities stored in the raw material information DB51, the component composition of the received organic waste can be determined more quickly and simply.

[0040] If the information stored in the raw material information DB 51 or the information attached to the received organic waste can be used to determine the properties of the received organic waste, proceed to step S113. If the information stored in the raw material information DB 51 or the information attached to the received organic waste cannot be used, proceed to step S112.

[0041] In step S112, a simplified analysis is performed on the received organic waste. A near-infrared analyzer that analyzes reflection and transmission data of near-infrared spectrum can be used as the simplified analysis device. A near-infrared analyzer is preferable because it can perform non-destructive analysis of the received organic waste quickly and relatively accurately, but it goes without saying that the present invention is not limited to a near-infrared analyzer as long as it is a device that can easily analyze the received organic waste. Here, for example, the calorific value, protein, lipid, carbohydrate, sodium, dietary fiber, ash, moisture, etc. of the received organic waste are simply analyzed. The results of the simplified analysis are stored in the raw material information DB51. In the case of a wide variety of received organic waste for which it is difficult to select a representative waste, similar waste may be estimated by image analysis.

[0042] In step S113, the raw material information preparation means 41 calculates the component composition of the received organic waste based on the property determination results obtained in steps S111 and S112, i.e., at least one of the past component analysis results of the received organic waste, the nutrient component display information of the received organic waste, the treatment performance information of the biological treatment device 30, or the simplified analysis results by near-infrared spectroscopy analysis.

[0043] For example, if the received organic waste is provided with information such as nutrient component labeling, the raw material information preparation means 41 uses the nutrient component labeling information to calculate information on each component per unit weight contained in the received organic waste. If the received organic waste is subjected to a simplified analysis, information on each component per unit weight contained in the received organic waste is calculated based on the simplified analysis results. According to the first step, the composition analysis of the received organic waste can be simplified, and it becomes easier to calculate the ratio and limit of the input amount of received organic waste to be input into the biological treatment device 30 so as to prevent an inhibitory reaction in the biological treatment device 30 and to optimize the treatment efficiency. The raw material information preparation means 41 further prepares component information on inhibitory components that cause inhibition of biological treatment in the biological treatment device 30.

[0044] In step S12, the raw material information preparation means 41 prepares a database of raw material information based on the information calculated in step S113, and stores it in the raw material information DB 51. It is preferable that the raw material information database includes at least information on the amount of received organic waste and the component composition of the received organic waste. In step S13, the raw material information preparation means 41 prepares and outputs a form (reception form) that records information such as the amount of received organic waste and the component composition of the received organic waste. Outputting the form makes it easier to manage the operation of the biological treatment system.

[0045] -Second process- In the second step, as shown in FIG. 4, based on the raw material information obtained in the first step, storage information is prepared for storing the received organic waste by classifying it according to its component composition.

[0046] The classification conditions for classifying the received organic waste by component composition can be appropriately set according to the treatment status of the biological treatment device 30. For example, when the biological treatment device 30 is a fermenter that performs methane fermentation treatment, it is preferable to classify the received organic waste into multiple categories by component concentration so that the received organic waste can be fed under optimal feeding conditions for methane fermentation. For example, in methane fermentation treatment, if the nitrogen concentration of the input raw material is too high, fermentation inhibition may occur. Therefore, for example, as a classification condition for classifying the received organic waste by component composition, it is preferable to focus on the nitrogen concentration of the received organic waste and store the received organic waste in the first category 2a, the second category 2b, the third category 2c, the fourth category 2d, ... in descending order of nitrogen concentration of the received organic waste, as shown in FIG. 1. Alternatively, the received organic waste may be classified and stored as a first class 2a, a second class 2b, a third class 2c, a fourth class 2d, etc., according to the concentration of inhibitory components contained in the received organic waste that may cause treatment inhibition in the biological treatment device 30 or the post-treatment device 300, such as the sodium concentration, foaming substances, substances that affect dehydration treatment, and substances that affect scale generation.

[0047] In the storage facility 2, multiple types of incoming organic waste may be mixed and stored or stored separately in order to adjust the components for the input raw material. By mixing multiple types of incoming organic waste and adjusting the component composition concentration and calorific value input to the biological treatment device 30, it is possible to easily adjust the load on the biological treatment device 30 for the incoming organic waste and suppress problems such as foaming. In the storage facility 2, multiple incoming organic wastes are stored in multiple categories based on specific properties without being mixed, thereby suppressing changes in properties due to mixing, such as the generation of toxic gases due to mixing, and maintaining the safety of the storage facility 2. The form of classification and storage is determined and optimized based on information such as the amount and type of incoming organic waste received.

[0048] In the biological treatment of incoming organic waste with a wide variety of component compositions, the incoming organic waste may be a raw material that is incompatible with biological treatment, or the incoming organic waste may contain components that are incompatible with biological treatment. In addition, a specific component contained in the incoming organic waste may decompose slower in biological treatment than other components, or may cause inhibition of biological treatment. When classifying the incoming organic waste according to its component composition, it is also preferable to exclude incompatible raw materials. It is also preferable to store incoming organic waste containing components that are incompatible with biological treatment separately from other incoming organic waste in order to treat the incoming organic waste under different treatment conditions from other incoming organic waste.

[0049] For example, as shown in Fig. 4, in step S21, the storage information creation means 42 extracts information on the component composition of the received organic waste from the raw material information DB 51. In step S22, the storage information creation means 42 determines whether or not there is an incompatible raw material in the component information of the received organic waste. If an incompatible raw material is present, in step S23, it determines whether or not to reject the received organic waste containing the incompatible raw material. If the received organic waste is to be rejected, in step S25, the received organic waste containing the incompatible raw material is extracted and excluded from the target of biological treatment in the biological treatment device 30.

[0050] Even if the received organic waste contains non-conforming raw materials, if the concentration is below the standard value, or if the received organic waste can be treated by the biological treatment device 30, the process proceeds to step S26. In step S26, the storage information creation means 42 creates storage information for classifying and storing the received organic waste based on the component composition or non-conforming raw materials. The storage information preferably includes the classification conditions, component composition information of the received organic waste after classification, and information on the amount and date of receipt. In step S27, the storage information creation means 42 outputs a form (storage form) recording storage information for classifying and storing the received organic waste. The received organic waste is classified by component composition based on the storage information and stored in the storage facility 2.

[0051] -3rd process- In the third step, input conditions including the input amount and input timing of the stored received organic waste to the biological treatment device are determined based on the biological treatment conditions of the biological treatment device 30 and the storage information including the component composition and received amount of the received organic waste after classification (operation information creation step). When the biological treatment device 30 is a fermenter, the biological treatment conditions of the biological treatment device 30 include the total solids concentration (TS) of the input raw material input to the fermenter, the amount of biogas generated, the amount of exhaust gas (CO2, H2S, etc.) generated, pH, treatment temperature, residence time, organic load, ammonia nitrogen concentration (NH4-N), chemical concentration such as antifoaming agent, the amount of sludge and treated liquid generated, etc. Input conditions include the input ratio (input amount) of multiple received organic wastes, the input order, the input interval, and information on whether the received organic waste stored before input is mixed before input or is input to separate biological treatment devices 30 without being mixed.

[0052] Specifically, as shown in FIG. 5, in step S31, the operating information creation means 43 extracts information from the storage information DB 52, the operating information DB 53, and the FB information DB 54 including biological treatment device measurement data of the biological treatment device 30, as well as inhibitory component information including concentration information of inhibitory components that are factors that cause processing inhibition in biological treatment, and preferably determines the input conditions by focusing on each component information so as to obtain the optimal input amount and input timing for the biological treatment of the biological treatment device 30.

[0053] For example, when the biological treatment device 30 is a fermentation tank for methane fermentation treatment, the operating information creation means 43 can determine the input conditions for the received organic waste classified into the first category 2a, the second category 2b, the third category 2c, the fourth category 2d, ... in the storage facility 2 with a focus on the ammoniacal nitrogen concentration so that the ammoniacal nitrogen concentration in the fermentation tank is 100 to 4000 mg / L, more preferably 200 to 3000 mg / L in the mesophilic methane fermentation treatment, and 200 to 3000 mg / L, more preferably 1000 to 2000 mg / L in the high temperature methane fermentation treatment.

[0054] Alternatively, when the biological treatment device 30 is a fermentation tank for methane fermentation treatment, the operating information creation means 43 can determine the order, timing and amount of input of the incoming organic waste classified into the first category 2a, the second category 2b, the third category 2c, the fourth category 2d, etc. in the storage facility 2, focusing on the lipid ratio so that the lipid ratio per sludge concentration of the sludge treated in the fermentation tank is 30 wt% or less, or even 20 wt% or less.

[0055] Alternatively, in the case where the biological treatment device 30 is a fermentation tank for methane fermentation treatment, the operating information creation means 43 can determine the order, timing and amount of input of the incoming organic waste classified into the first category 2a, the second category 2b, the third category 2c, the fourth category 2d, ... in the storage facility 2, focusing on the sodium concentration, so that the sodium concentration in the fermentation tank is 100 to 8000 mg / L, more preferably 200 to 3500 mg / L.

[0056] When incoming organic waste has a wide variety of compositions, if the incoming organic waste contains a certain amount of foaming substances, the treatment liquid in the biological treatment device 30 will foam, and the bubbles generated in the biological treatment device 30 may rise and block the piping for biogas recovery or adhere to measuring instruments and cause malfunctions, etc., which may result in the treatment of the biological treatment device 30 being hindered.

[0057] Alternatively, if the incoming organic waste contains a large amount of scale components such as calcium, magnesium, etc., this can cause scale to form in the biological treatment device 30 and its surrounding piping, resulting in blockage of the piping, etc. Regarding the above-mentioned nitrogen concentration, lipid ratio, sodium concentration, etc., if the concentrations of the input raw materials are not properly managed, processing in the biological treatment device 30 and post-treatment device 300 can be hindered.

[0058] Other examples of biological treatment inhibition, in addition to the foaming described above, include deterioration in the properties of treated sludge or treated liquid, a decrease in the amount of biogas generated, poor dewatering of treated sludge, deterioration in the water quality of dehydrated filtrate, etc. In this embodiment, attention is focused on inhibiting component information including concentration information of inhibiting components that are factors that cause biological treatment inhibition, and incoming organic waste is divided into multiple categories based on that component information, and these are fed into the biological treatment device 30, thereby making it possible to stably treat the waste for a long period of time while suppressing deterioration of treatment in the biological treatment device 30.

[0059] In the case of biologically treating a wide variety of received organic waste, the order of input is also important. For example, if a certain component of one received organic waste and a certain component of another received organic waste are input into the same biological treatment device 30, the treatment may deteriorate. For example, if a received organic waste with a high sugar content is input into a fermentation tank in which a received organic waste with a high lipid content is being subjected to methane fermentation treatment, hydrogen is generated, which inhibits the decomposition of lipids (fermentation inhibition), and the treatment may deteriorate. In order to prevent or reduce the inhibition, for example, the received organic waste with a high sugar content may be input after the residual amount of lipids has decreased to a certain value. Although not limited to the following, the residual amount of lipids is preferably 5000 mg / L or less, more preferably 3000 mg / L or less, and even more preferably 1000 mg / L or less. In order to reduce the residual amount of lipids, the input amount of lipids may be gradually reduced or the input may be temporarily stopped. The temporary stop time may be, for example, 5 days or more, preferably 10 days or more, and more preferably 20 days or more. When fermentation products such as easily decomposable substances like sugars, lower alcohols of C5 or less, and volatile organic acids of C6 or less are added, inhibition can be suppressed by adjusting the addition conditions as described above. Although not limited to the following, it is preferable to determine the amount, addition period, and addition suspension period of a specific component, for example, to ensure that biological treatment proceeds smoothly, based on the standard value of the concentration of a specific component in the received waste that affects biological treatment.

[0060] In this embodiment, the input conditions, including the input amount and input timing of the received organic waste stored in the storage facility 2 to the biological treatment device 30, are determined so as to control the input order of inhibitory components that cause biological treatment inhibition to the biological treatment device 30. This makes it possible to improve the treatment efficiency of the organic waste and to perform stable treatment for a long period of time while suppressing deterioration of treatment in the biological treatment device 30.

[0061] Furthermore, in the step of determining the input conditions in step S32, the operation information creating means 43 has a step of determining the input order of the stored received organic waste so as to control the input of the received organic waste into the biological treatment device 30 based on inhibitory component information including concentration information of inhibitory components that are factors that cause inhibition of biological treatment contained in the received organic waste stored in the storage facility 2. As a result, even when multiple types of received organic waste with different component compositions are input into the same biological treatment device 30, stable treatment can be performed while suppressing deterioration of the treatment in the biological treatment device 30. In step S33, the operation information creating means 43 outputs a form recording information on the input conditions for the received organic waste.

[0062] When the input conditions for the received organic waste are determined, in step S3 of Fig. 2, a predetermined amount of received organic waste is brought in from the storage facility 2 and input at a predetermined input rate and interval based on the input conditions. The biological treatment device 30 biologically treats the received organic waste based on the input conditions. The sludge obtained by the biological treatment is dehydrated in a dehydrator 301, and the treated liquid is subjected to a predetermined process such as nitrification / denitrification in a water treatment device 302. Depending on the component composition of the received organic waste, the received organic waste may be supplied to the water treatment device 302 by bypassing the biological treatment device 30.

[0063] -4th process- In the fourth step, as shown in Fig. 6, it is preferable to correct the input conditions determined in the third step (S44) based on the treatment results of the treatment facility 3 including the biological treatment device 30, the dehydrator 301, and the water treatment device 302. By providing the fourth step, the treatment results of the treatment facility 3 including the biological treatment device 30, the dehydrator 301, and the water treatment device 302 can be fed back to the input conditions for optimization, thereby improving the treatment efficiency of the received organic waste and enabling stable treatment for a long period of time while suppressing deterioration of treatment in the biological treatment device 30.

[0064] The treatment results (biological treatment results) of the treatment facility 3 are stored in the FB information DB 54. The biological treatment device measurement data that stores the treatment results of the biological treatment device 30 includes the biogas volume, the measurement results of the concentrations of methane, carbon dioxide, and hydrogen sulfide in the biogas, pH, alkalinity, solid concentration, NH4-N, and volatile fatty acid (VFA) concentration, as well as the treatment results such as the treated water volume and the sludge transport volume. The dehydrator measurement data of the dehydrator 301 of the post-treatment device 300 includes the dehydrated sludge water content, polymer type, polymer usage, pressure, etc. The nitrification and denitrification data of the water treatment device 302 of the post-treatment device 300 includes the measurement results of pH, alkalinity, organic matter concentration, NH4-N, nitrite nitrogen (NO3-N), and methanol usage. In addition, utility data includes information on the usage status of electricity, gas, water, and chemicals.

[0065] As shown in FIG. 6, the operation information creating means 43 extracts the processing results of the biological treatment device 30 stored in the FB information DB 54 (step S41), and compares the information of the processing results with information of a predetermined processing standard value (recommended value) based on at least one of the information of these processing results (step S42). In step S43, the operation information creating means 43 judges whether or not to correct the input conditions based on the result of comparing the processing results with the standard value. If the processing result deviates from the standard value as a result of comparing the processing results with the standard value, in step S44, the input conditions are corrected so that the input conditions are such that the processing result falls within the standard value. If the processing result does not deviate from the standard value, the process proceeds to step S45. In step S45, the operation information creating means 43 outputs a document recording the corrected input conditions if the input conditions are corrected, or the input conditions if the input conditions are not corrected.

[0066] According to the first embodiment of the present invention, the raw material information of the received organic waste discharged from the discharge facilities 1A, 1B, 1C is quickly determined based on the information attached to the received organic waste, existing treatment results, or simple analysis. When storing the received organic waste, the received organic waste can be classified into a number of categories based on component composition and stored according to the biological treatment status in the biological treatment device 30. This allows the received organic waste belonging to a category suitable for the treatment conditions of the biological treatment device 30 to be preferentially fed into the biological treatment device 30.

[0067] Furthermore, the conditions for feeding the stored received organic waste to the biological treatment device 30, including the amount and timing of feeding the stored received organic waste to the biological treatment device 30, are determined based on the biological treatment conditions of the biological treatment device 30 and storage information including information on the component composition and received amount of the received organic waste after classification, so as to control the feeding of inhibitory components that cause inhibition of biological treatment to the biological treatment device 30, thereby making it possible to suppress deterioration of treatment in the biological treatment device 30 for a long period of time.

[0068] (Second embodiment) 7, in the biological treatment system for organic waste according to the second embodiment, an operation support system 4 includes a learning means 44, a receiving plan creating means 45, and a learning database (learning DB) 55. The rest is the same as in the biological treatment system according to the first embodiment.

[0069] 7 also shows an example in which the operation assistance system 4 is connected to the storage facility 2 and the processing facilities 3 and 5 via the network 6, but the present invention is not limited to this example, and it goes without saying that a computer capable of executing some of the functions of the operation assistance system 4 may be provided in each of the storage facility 2 and the processing facilities 3 and 5. For example, the learning DB 55 and the learning means 44 provided in the control device 40 may be located in a computer different from that of the operation assistance system 4 shown in FIG.

[0070] The learning means 44 creates a trained model (artificial intelligence model) for various treatment conditions of the biological treatment system according to the second embodiment by machine learning using a predetermined machine learning algorithm based on various information stored in the raw material information DB 51, the storage information DB 52, the operation information DB 53, and the FB information DB 54, and stores the trained model in the learning DB 55. As the machine learning algorithm, for example, an appropriate one can be appropriately selected from various analysis tools using the PCR method (principal component regression method), the PLS method (partial least squares method), the SVR method (support vector regression method), the ARIMA, the neural network (ANN or RNN) method, the random forest method, the decision tree method, etc. When creating a trained model that includes the amount of biogas generation in the dataset, it is particularly suitable to use the RNN method in order to take into account the residence time of the treatment process, but it is more suitable to use a gated RNN such as LSTM (long short-term memory) and GRU (gated recurrent unit) in order to solve the gradient vanishing / explosion problem.

[0071] The trained model created by the learning means 44 may include any of a fully connected neural network model, a random forest model, a clustering model, or an RNN model. Parameters of the machine learning model, such as the number of layers in the fully connected neural network method and the number of neurons in each layer, are appropriately changed according to the number of explanatory variables. The trained model created is configured to receive a predetermined explanatory variable and output a predetermined objective variable.

[0072] The learning means 44 uses the trained model to predict operational information of the storage facility 2 and treatment facilities 3 and 5 that constitute the biological treatment system. For example, the learning means 44 predicts operating costs including the availability of sections for storing received organic waste in the storage facility 2, operational information of the biological treatment device 30 and post-treatment device 300, sludge discharge amount and treated water quality of the biological treatment device 30, and utility data of the biological treatment device 30 such as electricity, water, gas, and chemicals.

[0073] The receiving plan creation means 45 creates recommended receiving plan information based on the results of the prediction of operating information by the learning means 44 so that the amount of organic waste to be received at the storage facility 2, the treatment conditions of the biological treatment device 30, and the treatment conditions of the post-treatment device 300 are each optimized.

[0074] For example, the receiving plan creation means 45 creates recommended organic waste receiving plan information based on the prediction results of the operating information by the learning means 44 and the various information stored in the raw material information DB 51, the storage information DB 52, the operating information DB 53, and the FB information DB 54, so as to maximize the amount of organic waste received in the storage facility 2.

[0075] For example, the receiving plan creating means 45 may create recommended receiving plan information for restricting the receipt of received organic waste that exceeds or is selected from the storage capacity of the storage facility 2 and the processing capacity of the biological treatment device 30, depending on the storage capacity of the storage facility 2 and the processing capacity of the biological treatment device 30. Specifically, when a request for receipt of received organic waste is received, the receiving plan creating means 45 extracts the status of available space in multiple storage facilities 2, or extracts whether there is a storage facility 2 that will have available space in the near future based on the input conditions of the biological treatment device 30, and creates recommended receiving plan information for classifying and storing the received organic waste in a storage facility 2 that has available space based on the extraction result.

[0076] Alternatively, the receiving plan creation means 45 extracts the storage information DB 52 of multiple storage facilities 2, and creates recommended receiving plan information for preferentially transporting and storing received organic waste that matches a classification with storage capacity among the first classification 2a to fourth classification 2d divided by the storage facility 2 to that classification.

[0077] Alternatively, the receiving plan creation means 45 may create recommended receiving plan information including restriction information that restricts the acceptance of the received organic waste if the received organic waste contains components that are incompatible with biological treatment in the biological treatment device 30, based on various information stored in the raw material information DB51, storage information DB52, operation information DB53, and FB information DB54.

[0078] Even if the incoming organic waste contains components that are incompatible with biological treatment in the biological treatment device 30 and conventional treatment is considered difficult, a certain level of treatment may be possible by adjusting the input amount, input timing, and mixing ratio with other waste, using a storage method that divides the waste into multiple compartments in the storage facility 2 or adjusting the treatment load of the biological treatment device 30.

[0079] According to the operation support system 4 of the second embodiment, the receiving plan creating means 45 can create recommended receiving plan information that optimizes storage conditions and input conditions so as to make it possible to receive a portion of the received organic waste containing unsuitable components, based on the results of the prediction of operation information by the learning means 44 and the past processing results of unsuitable materials stored in the raw material information DB 51, storage information DB 52, operation information DB 53, and FB information DB 54. This makes it possible to process a larger amount and a wider variety of received organic waste than before, thereby widening the allowable range of pick-up conditions for the received organic waste.

[0080] It is also preferable that the receiving plan creating means 45 creates recommended receiving plan information that optimizes the conditions for chemical injection to the biological treatment device 30 and the post-treatment device 300, such as the amount of defoamer to be added to the biological treatment device 30, the type and amount of dehydrating polymer to be added to the dehydrator 301, or the type and amount of chemical and coagulant to be added to the water treatment device 302, based on the current or past storage information and input conditions. Based on the recommended receiving plan information, the operation information creating means 43 may create operation information that optimizes the treatment conditions of the biological treatment device 30 according to the treatment results of the post-treatment device 300 including the dehydrator 301 and the water treatment device 302. The recommended receiving plan information is stored in the operation information DB 53.

[0081] The receiving plan creation means 45 preferably outputs a document (operation management document) or a manifest including recommended receiving plan information. The operation management document describes the type and amount of received raw materials, the amount of treated water and sludge discharged in the treatment facilities 3 and 5, and utility usage including electricity, gas, water, and chemicals. Outputting the document makes it easier to manage the receiving status of the received organic waste in the storage facility 2 and the biological treatment status of the received organic waste in the treatment facilities 3 and 5. In addition, outputting the recommended receiving plan information to each facility via the operation support system 4 makes it possible to proceed with work under more optimal conditions without relying on the judgment of a skilled operator.

[0082] According to the biological treatment system of the second embodiment, the amount of organic waste received, the operating costs are minimized, the amount of sludge transported is minimized, the treated water quality is optimized, and the amount of biogas generated is maximized. Each item is partially optimized so that the entire treatment system is optimized, and recommended receiving plan information can be presented via the network 6 (cloud) using a machine learning function, thereby improving the efficiency of work in the biological treatment system. In addition, by configuring the system to output reports recording information obtained in each process, it becomes easy to create daily operation reports, etc., and it becomes possible to visualize the operating status using a report system. [Explanation of symbols]

[0083] 1A: Emissions facility 1B: Discharge facility 1C: Emissions facility 2:Storage equipment 3: Treatment facility 4: Driving assistance systems 5: Treatment facility 6: Network 30: Biological treatment equipment 40: Control device 41: Means for creating raw material information 42: Storage information creation means 43: Means of creating driving information 44: Means of learning 45: Acceptance planning method 300: Post-processing device 301: Dehydrator 302: Water treatment equipment

Claims

1. A step of classifying and storing the received organic waste based on raw material information including information on the amount of the received organic waste and the component composition of the received organic waste; A step of preparing storage information for the received organic waste after the classification; A step of determining conditions for feeding the received organic waste into a biological treatment tank for biologically treating the received organic waste; Biologically treating the received organic waste based on the input conditions; having The step of determining the input conditions comprises: A biological treatment method for organic waste, characterized in that the input conditions for the received organic waste are determined based on inhibitory component information on inhibitory components that inhibit treatment in the biological treatment tank and are contained in the received organic waste after the classification, and operating information for the biological treatment tank.

2. 2. The method for biologically treating organic waste according to claim 1, wherein the biological treatment tank includes a fermentation tank for fermenting the received organic waste.

3. The step of determining the input conditions comprises:

3. The method for biologically treating organic waste according to claim 1 or 2, wherein the input conditions are determined based on at least one of the concentrations of lipids, foaming substances, sodium, nitrogen, sulfates, substances that cause scale generation, and inorganic salts that promote the growth of microorganisms contained in the received organic waste after the classification.

4. 4. The method for biologically treating organic waste according to claim 1, wherein the step of determining the input conditions determines the input amount and input timing of the received organic waste based on the residual lipid concentration in the biological treatment tank and the sugar concentration contained in the received organic waste after classification.

5. The method for biologically treating organic waste according to any one of claims 1 to 4, wherein the step of storing includes classifying and storing the received organic waste according to component concentrations.

6. The method for biological treatment of organic waste according to any one of claims 1 to 5, wherein the storing step includes adjusting the component composition of the received organic waste after the classification by mixing a plurality of the received organic wastes.

7. The biological treatment method for organic waste according to any one of claims 1 to 6, wherein raw material information is prepared based on any one of past component analysis results of the received organic waste, nutrient component display information of the received organic waste, treatment performance information of a biological treatment device, or simplified analysis results of the received organic waste.

8. A storage facility for storing the received organic waste by classifying it according to its composition; A biological treatment device including a fermenter for biologically treating the received organic waste; a control device that controls input conditions, including the input amount and input timing, of the stored received organic waste to the biological treatment device, based on inhibiting component information of inhibiting components that cause treatment inhibition in the biological treatment tank and the biological treatment conditions of the biological treatment tank, contained in the received organic waste after the classification; A biological treatment system for organic waste comprising:

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