Processing device, processing method, and program

Abstract

A processing device 1 comprises: an emission amount calculation unit 22 that calculates the CO2 emission amount of a first item relating to manufacturing of devices used for cultivation in a land cultivation system, the CO2 emission amount of a second item relating to production of feeds required for cultivation, the CO2 emission amount of a third item relating to production of seedlings used for cultivation, and the CO2 emission amount of a fourth item relating to energy consumption required for cultivation; an evaluation value calculation unit 23 that calculates an evaluation value 14 by dividing the sum total of the CO2 emission amounts of the first to fourth items by a shipping volume of cultivated products; and an output unit 24 that outputs the evaluation value 14 as an environmental load evaluation value.

Description

Processing Device, Processing Method, and Program

[0001] The present disclosure relates to a processing device, a processing method, and a program.

[0002] In recent years, as solutions to the global increase in demand for protein sources, the impact of climate change on fish catches, and the problem of marine environmental pollution, attention has been focused on land-based aquaculture. However, in land-based aquaculture, energy consumption is high. Appropriate environmental impact assessment is required to create a sustainable land-based aquaculture system.

[0003] For example, Non-Patent Document 1 discloses an environmental impact assessment using the LCA (Life Cycle Assessment) method for the land-based aquaculture of abalone. Non-Patent Document 1 discloses an assessment based on interviews with the breeding staff, actual measurements of the aquaculture facilities, and existing LCA data (Non-Patent Document 2), etc.

[0004] Yuki Takahashi, "Report on the results of environmental impact assessment by LCA for land-based aquaculture facilities in the Tohoku region", [online], [searched on September 18, 2024], Internet <URL: https: / / www.science-pro.jp / assist / pdf / reiwa_3 / takahashi.pdf> Sustainable Management Promotion Agency, "LCI Database IDEA", [online], [searched on September 18, 2024], Internet <URL: https: / / sumpo.or.jp / consulting / lca / idea / >

[0005] However, since land-based aquaculture systems are complex, it may be difficult to evaluate environmental impacts using general LCA methods. For example, Non-Patent Document 1 conducts interviews with the breeding staff and actual measurements of the aquaculture facilities to obtain data. There is a problem that a great deal of effort and time are required to evaluate the environmental load by the LCA method in a land-based aquaculture system.

[0006] The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a technology capable of easily evaluating the environmental load in a land-based aquaculture system.

[0007] An apparatus according to one aspect of the present disclosure includes an emission calculation unit that calculates CO2 emissions for a first item relating to the manufacture of equipment used in aquaculture in a land-based aquaculture system, CO2 emissions for a second item relating to the production of feed necessary for aquaculture, CO2 emissions for a third item relating to the production of seedlings used in aquaculture, and CO2 emissions for a fourth item relating to energy consumption necessary for aquaculture; an evaluation value calculation unit that calculates an evaluation value by dividing the sum of the CO2 emissions for the first to fourth items by the amount of aquaculture products shipped; and an output unit that outputs the evaluation value as an evaluation value of environmental load.

[0008] A processing method in one aspect of the present disclosure involves a computer calculating the CO2 emissions of a first item related to the manufacture of equipment used for aquaculture in a land-based aquaculture system, the CO2 emissions of a second item related to the production of feed necessary for aquaculture, the CO2 emissions of a third item related to the production of seedlings used for aquaculture, and the CO2 emissions of a fourth item related to the energy consumption necessary for aquaculture. The computer then calculates an evaluation value by dividing the total CO2 emissions of the first to fourth items by the amount of aquaculture products shipped, and outputs the evaluation value as an evaluation value for environmental load.

[0009] A program in one aspect of the present disclosure causes a computer to function as an emissions calculation unit that calculates CO2 emissions for a first item relating to the manufacture of equipment used in aquaculture in a land-based aquaculture system, CO2 emissions for a second item relating to the production of feed necessary for aquaculture, CO2 emissions for a third item relating to the production of seedlings used in aquaculture, and CO2 emissions for a fourth item relating to energy consumption necessary for aquaculture; an evaluation value calculation unit that calculates an evaluation value by dividing the sum of the CO2 emissions for the first to fourth items by the amount of aquaculture products shipped; and an output unit that outputs the evaluation value as an evaluation value of environmental load.

[0010] This disclosure provides a technology that allows for easy evaluation of the environmental impact of land-based aquaculture systems.

[0011] Figure 1 is a diagram illustrating the functional blocks of the processing apparatus according to this disclosure. Figure 2 is a diagram illustrating an example of the data structure of input data. Figure 3 is a diagram illustrating an example of the data structure of emissions data. Figure 4 is an example of a flowchart illustrating the processing method in the processing apparatus. Figure 5 is a diagram illustrating the hardware configuration of the computer used in the processing apparatus.

[0012] Embodiments of this disclosure will be described below with reference to the drawings. In the drawings, the same parts are denoted by the same reference numerals and their descriptions are omitted.

[0013] The processing device 1 shown in Figure 1 calculates an environmental impact assessment value 14 for an aquaculture system. The input data 11 referenced by the processing device 1 when calculating the assessment value contains a lot of basic information about the equipment itself, such as the unit price or capacity of the aquaculture equipment. Since the input data 11 is easily obtainable, businesses can assess the environmental impact of their aquaculture system even without possessing knowledge of environmental impact assessment.

[0014] First, equation (1) shows the formula for calculating the environmental impact evaluation value proposed by the processing device 1.

[0015]

[0016] In equation (1), the equipment used in the aquaculture system includes, for example, tanks, filtration systems, temperature control systems, denitrification systems, pipes, etc. The type of energy used in the aquaculture system is electricity, fuel, etc.

[0017] Here, "seedlings" refer to the target of aquaculture. Seedlings are juvenile fish or eggs, etc. When purchasing seedlings, the cost of the seedlings may be the purchase price.

[0018] The right-hand side of equation (1) can be divided into the first to fourth terms shown in equations (2) to (5).

[0019]

[0020] In this disclosure, item 1 may be referred to as the equipment manufacturing item. Item 2 may be referred to as the feed manufacturing item. Item 3 may be referred to as the seedling production item. Item 4 may be referred to as the energy usage item.

[0021] As shown in Figure 1, the processing unit 1 includes input data 11, coefficient data 12, emission data 13, and evaluation value 14, as well as the functions of an acquisition unit 21, an emission calculation unit 22, an evaluation value calculation unit 23, and an output unit 24. Each piece of data is stored in a storage device such as a memory 902 or storage 903. Each function is implemented in the CPU 901.

[0022] The input data 11 includes data from the land-based aquaculture system that is the subject of the calculation of the environmental impact assessment value in equation (1). As shown in Figure 2, the input data 11 includes data on the equipment used in the land-based aquaculture system, feed data, seedling data, energy consumption data, and data on the amount of farmed products shipped. The input data 11 consists of the values ​​of the parameters on the right-hand side of equation (1), excluding the CO2 emission coefficient. In this disclosure, each piece of data included in the input data 11 is a value known to the operator of the aquaculture system.

[0023] The coefficient data 12 includes predetermined parameter values ​​for calculating environmental impact assessment values. The coefficient data 12 consists of values ​​related to the CO2 emission coefficients among the parameters on the right-hand side of equation (1). The coefficient data 12 is data registered in a so-called LCA database. The processing device 1 may refer to each CO2 emission coefficient from the LCA database, or it may store the CO2 emission coefficients to be written in the coefficient data 12 in advance.

[0024] The emission data 13 consists of emission amounts for each item calculated by the emission calculation unit 22. As shown in Figure 3, the emission data 13 includes emission data for each item used in land-based aquaculture systems, such as equipment manufacturing items 221, feed manufacturing items 222, seedling production items 223, and energy usage items 224.

[0025] The acquisition unit 21 acquires input data 11. The acquisition unit 21 acquires input data 11 from operators of land-based aquaculture systems that are subject to the calculation of environmental impact assessment values, regarding the land-based aquaculture systems subject to the calculation.

[0026] The emissions calculation unit 22 divides the land-based aquaculture system into multiple components and calculates the CO2 emissions for each component.

[0027] In this disclosure, the land-based aquaculture system is divided into four sections.

[0028] The first item is the equipment manufacturing item 221, which concerns the manufacture of equipment used for aquaculture in land-based aquaculture systems. The CO2 emissions for the first item are calculated by determining the CO2 emissions of each piece of equipment required for the land-based aquaculture system and adding up the CO2 emissions of each piece of equipment. The emission calculation unit 22 uses formula (2) to calculate the CO2 emissions for the first item by multiplying the CO2 emission coefficients related to the production of various pieces of equipment by the unit price of the equipment, the useful life, the number of years of aquaculture, and the number of pieces of equipment.

[0029] The second item is the feed production item 222, which relates to the production of feed necessary for aquaculture. The emission calculation unit 22 uses equation (3) to calculate the CO2 emissions for the second item by multiplying the CO2 emission coefficient related to feed production by the actual cost of feed.

[0030] The third item is the seedling production item 223, which relates to the production of seedlings used in aquaculture. The emission calculation unit 22 uses equation (4) to calculate the CO2 emissions for the third item by multiplying the CO2 emission coefficient related to seedling production by the actual cost of purchasing the seedlings.

[0031] The fourth item is the energy use item 224, which relates to the energy consumption required for aquaculture. The emission calculation unit 22 uses equation (5) to calculate the CO2 emissions for the fourth item by multiplying the CO2 emission coefficient due to energy use by the cost of energy use.

[0032] The emissions calculation unit 22 stores the emissions calculated for each of the four items in the emissions data 13.

[0033] The evaluation value calculation unit 23 calculates the evaluation value 14 by dividing the sum of CO2 emissions from the first to fourth items by the amount of farmed products shipped.

[0034] The output unit 24 outputs the evaluation value 14 as the evaluation value for environmental load.

[0035] Here, we show an example of how the CO2 emissions for each item are calculated by the emissions calculation unit 22.

[0036] The equipment manufacturing item 221 will be described. Here, as the equipment of the aquaculture system, an aquarium, a filtration device, a denitrification device, a temperature control device, and pipes are listed. The CO2 emission amount related to equipment manufacturing is calculated by Equation (6).

[0037] [Equation 3] CO2 emission amount related to equipment manufacturing = CO2 emission coefficient related to aquarium manufacturing (kg CO2 / t) × aquarium capacity ÷ service life × aquaculture years × number of aquariums + CO2 emission coefficient related to filtration device manufacturing (kg CO2 / unit) ÷ service life × aquaculture years × number of filtration devices + CO2 emission coefficient related to denitrification device manufacturing (kg CO2 / yen) × denitrification device unit price ÷ service life × aquaculture years × number of denitrification devices + CO2 emission coefficient related to temperature control device manufacturing (kg CO2 / yen) × temperature control device unit price ÷ service life × aquaculture years × number of temperature control devices + CO2 emission coefficient related to pipe manufacturing (kg CO2 / m) × pipe distance ÷ service life × aquaculture years × number of pipes Equation (6)

[0038] When specific values are substituted into Equation (6), the calculation is as follows. Here, the items related to the denitrification device and the temperature control device are omitted.

[0039] 5210 kgCO2 / t * 5t ÷ 20 * (10 / 12) * 1 + 17526 kgCO2 / unit ÷ 20 * (10 / 12) * 1 + 23.94 kgCO2 / m * 10m ÷ 20 * (10 / 12) * 1 = 1825 kgCO2

[0040] The feed manufacturing item 222 will be described. The CO2 emission amount related to feed manufacturing is calculated by Equation (7).

[0041] [Equation 4] CO2 emission amount related to feed production = CO2 emission coefficient related to feed production (kgCO2 / 10,000 yen) × feed cost Equation (7)

[0042] When specific values are substituted into Equation (7), the calculation is as follows.

[0043] 10.7 (kgCO2 / 10,000 yen) * 1,000,000 yen = 1070 kgCO2

[0044] The seedling production item 223 will be described. The CO2 emission amount related to feed manufacturing is calculated by Equation (8).

[0045] [Number 5] CO₂ emissions related to seedling production = CO₂ emission coefficient related to seedling production (kg CO₂ / 10,000 yen) × seedling cost formula (8)

[0046] When specific values are substituted into formula (8), the calculation is as follows.

[0047] 4.67 kg CO₂ / 10,000 yen * 20,000 yen = 9.34 kg CO₂

[0048] The energy usage items will be explained. The CO₂ emissions related to feed production are calculated by formula (9).

[0049] [Number 6] CO₂ emissions due to energy usage = CO₂ emission coefficient due to electricity energy usage (kg CO₂ / 10,000 yen) × energy usage cost formula (9)

[0050] When specific values are substituted into formula (9), the calculation is as follows.

[0051] (1825 + 1070 + 9.34 + 3000) / 200 = 29.54 kg CO₂ / kg

[0052] Note that for the CO₂ emission coefficients related to the production of various devices, instead of using yen units (kg CO₂ / yen), weight units (kg CO₂ / kg) or device units (kg CO₂ / unit) may be used. In that case, it is necessary to use device information (such as price or weight) according to the usage unit.

[0053] (Processing method) Referring to Figure 4, the processing method in the processing device 1 will be explained.

[0054] In step S1, the processing device 1 acquires the input data 11.

[0055] In steps S2 - 5, the processing device 1 calculates the CO₂ emissions for each item of the aquaculture system. In step S2, the processing device 1 calculates the CO₂ emissions of the device manufacturing item. In step S3, the processing device 1 calculates the CO₂ emissions of the feed manufacturing item. In step S4, the processing device 1 calculates the CO₂ emissions of the seedling manufacturing item. In step S5, the processing device 1 calculates the CO₂ emissions of the energy usage item.

[0056] In step S6, the processing device 1 calculates the evaluation value 14. The processing device 1 calculates the evaluation value 14 by dividing the sum of each CO2 emission amount calculated in step S2-5 by the amount of farmed products shipped.

[0057] Thus, the processing apparatus 1 according to this disclosure can easily evaluate the environmental impact of a land-based aquaculture system.

[0058] The processing device 1 described herein makes it possible to easily evaluate the environmental impact of aquaculture in land-based aquaculture systems using only information such as aquaculture equipment information, feed costs, and energy costs. The processing device 1 allows land-based aquaculture operators who do not possess specialized knowledge regarding environmental impact assessment to calculate the evaluation value of environmental impact.

[0059] For example, land-based aquaculture businesses can easily assess their environmental impact and advertise to consumers that their products are environmentally friendly. It can also be easily used in procedures such as applying for permits and approvals from government authorities.

[0060] The processing unit 1 described above in this disclosure is, for example, a general-purpose computer system comprising a CPU (Central Processing Unit, processor) 901, memory 902, storage 903 (HDD: Hard Disk Drive, SSD: Solid State Drive), communication device 904, input device 905, and output device 906. In this computer system, each function of the processing unit 1 is realized by the CPU 901 executing a program loaded onto the memory 902.

[0061] The processing unit 1 may be implemented on a single computer, or it may be implemented on multiple computers. Furthermore, the processing unit 1 may be a virtual machine implemented on a computer.

[0062] The program of the processing unit 1 can be stored on a computer-readable recording medium such as an HDD, SSD, USB (Universal Serial Bus) memory, CD (Compact Disc), or DVD (Digital Versatile Disc), or it can be distributed over a network. A computer-readable recording medium is, for example, a non-transitory recording medium.

[0063] This disclosure is not limited to the embodiments described above, and numerous modifications are possible within the scope of its essence.

[0064] 1 Processing unit 11 Input data 12 Coefficient data 13 Emissions data 14 Evaluation value 21 Acquisition unit 22 Emissions calculation unit 23 Evaluation value calculation unit 24 Output unit 901 CPU 902 Memory 903 Storage 904 Communication device 905 Input device 906 Output device

Claims

1. An emission calculation unit that calculates CO2 emissions for a first item related to the manufacture of equipment used in aquaculture in a land-based aquaculture system, CO2 emissions for a second item related to the production of feed necessary for aquaculture, CO2 emissions for a third item related to the production of seedlings used in aquaculture, and CO2 emissions for a fourth item related to energy consumption necessary for aquaculture; an evaluation value calculation unit that calculates an evaluation value by dividing the total of the CO2 emissions for the first to fourth items by the amount of aquaculture products shipped; and an output unit that outputs the evaluation value as an evaluation value of environmental load.

2. The apparatus according to claim 1, wherein the first item calculates the CO2 emissions of each device required for the land-based aquaculture system and adds up the CO2 emissions of each device.

3. A processing method in which a computer calculates the CO2 emissions for a first item related to the manufacture of equipment used in aquaculture in a land-based aquaculture system, the CO2 emissions for a second item related to the production of feed necessary for aquaculture, the CO2 emissions for a third item related to the production of seedlings used in aquaculture, and the CO2 emissions for a fourth item related to the energy consumption necessary for aquaculture, divides the sum of the CO2 emissions for the first to fourth items by the amount of aquaculture products shipped to calculate an evaluation value, and outputs the evaluation value as an evaluation value for environmental load.

4. A program that causes a computer to function as an emission calculation unit that calculates CO2 emissions for a first item related to the manufacture of equipment used in aquaculture in a land-based aquaculture system, CO2 emissions for a second item related to the production of feed necessary for aquaculture, CO2 emissions for a third item related to the production of seedlings used in aquaculture, and CO2 emissions for a fourth item related to energy consumption necessary for aquaculture; an evaluation value calculation unit that calculates an evaluation value by dividing the total of the CO2 emissions for the first to fourth items by the amount of aquaculture products shipped; and an output unit that outputs the evaluation value as an evaluation value of environmental load.

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