Rural domestic sewage discharge and treatment process carbon emission evaluation and accounting device, method, equipment and medium

Abstract

The invention discloses a rural domestic sewage discharge and treatment process carbon emission evaluation accounting device, method and equipment and a medium. The rural domestic sewage discharge and treatment process carbon emission evaluation accounting device comprises a data access module, a carbon emission calculation module, a data storage module and a result output module. The data access module receives data acquired by the water quality sensor, the flow sensor, the medicament metering pump and the electricity meter; the carbon emission calculation module is used for calculating the carbon emission in the operation process of the agricultural pollution facility according to the accessed water quality, water quantity, dosage, electricity consumption and configuration data; the data storage module is used for storing configuration data required for calculating the carbon emission and storing the calculated carbon emission data; the result output module is connected with the storage module and is used for outputting analysis and accounting result data; according to the method, the carbon emission in the rural domestic sewage discharge and treatment process can be quantified.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission evaluation, and particularly to a device, method, equipment and medium for evaluating and accounting the carbon emissions in the process of rural domestic sewage discharge and treatment. Background Art

[0002] In the process of rural domestic sewage treatment, carbon emissions will also be generated. With the promotion of the dual-carbon policy, it is very necessary to accurately master the carbon emissions in the process of rural domestic sewage treatment. At present, in the treatment of rural domestic sewage, although there have been single accounting methods such as carbon emissions of sewage treatment equipment, the coverage rate and household connection rate of rural sewage treatment are uneven. At present, there is no accounting method and tool for the carbon emissions of the overall rural domestic sewage discharge and treatment process, which on the one hand causes the defect of the summary calculation of the drainage carbon emission situation; on the other hand, it is difficult to evaluate the effect of promoting the connection of households to the sewage pipe network and to evaluate the energy-saving and low-carbon operation of sewage collection and treatment. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above deficiencies and provide a device, method, equipment and medium for evaluating and accounting the carbon emissions in the process of rural domestic sewage discharge and treatment, so as to quantify the carbon emissions in the process of rural domestic sewage discharge and treatment.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a device for evaluating and accounting the carbon emissions in the process of rural domestic sewage discharge and treatment, including a data access module, a carbon emission calculation module, a data storage module, and a result output module;

[0005] The data access module receives the data collected by the water quality sensor, flow sensor, chemical dosing pump and electric meter;

[0006] The carbon emission calculation module calculates the carbon emissions during the operation of the rural sewage treatment facilities according to the accessed water quality, water volume, chemical dosage, electricity consumption and configuration data;

[0007] The data storage module stores the configuration data required for calculating the carbon emissions and stores the calculated carbon emission data;

[0008] The result output module is connected to the storage module and is used to output the result data of the analysis and accounting.

[0009] Preferably, the water quality sensor is a COD and TN sensor.

[0010] Preferably, the data collected by the electric meter is the electricity consumption for sewage treatment and the new energy power generation.

[0011] The present invention also discloses a method for evaluating and accounting the carbon emissions in the process of rural domestic sewage discharge and treatment, which includes the following steps:

[0012] S1. Obtain rural basic data in the region: Obtain data on the permanent rural population, the population connected to the sewage system, the population discharging sewage directly, the process types of sewage treatment facilities, the types and areas of plants.

[0013] S2. Obtain configuration data: Obtain data on the comprehensive reduction coefficient, the COD generation amount per capita of domestic sewage, the maximum methane generation capacity of organic matter, the removal rate of organic matter in the collection system, the methane correction factor, N 2 O emission factor, the carbon emission factor of chemicals, the carbon emission factor of the power grid, the carbon sequestration capacity of plants, the global warming potential value of methane gas, and the global warming potential value of nitrous oxide gas.

[0014] S3. Input or access data: Access the collected data or test data of the sewage treatment facility, including the influent COD, effluent COD, influent TN, effluent TN, treated water volume, chemical dosage, power consumption, and green energy power generation.

[0015] S4. Calculate the carbon emissions of unsewered sewage.

[0016] S5. Calculate the carbon emissions during the sewage collection process.

[0017] S6. Calculate the carbon emissions during the terminal treatment process of sewage treatment.

[0018] S7. Calculate the total carbon emissions: Calculate the carbon emissions during the time period between the current time and the end of the last calculation.

[0019] S8. Store the carbon emissions.

[0020] S9. Output the carbon emissions.

[0021] Further, the algorithm for calculating the carbon emissions of unsewered sewage in step S4 is specifically as follows:

[0022] Calculate the methane emissions of unsewered sewage: The purification process of unsewered sewage can be calculated according to the natural treatment mode of land or water bodies, and calculate the methane emissions during the sewage discharge process. The formula is as follows:

[0023]

[0024] In the above formula, C CH4_d represents the direct CH4 emissions (kgCH 4 ) of unsewered sewage within the service scope, PRP d represents the number of unsewered permanent residents within the service scope (persons), represents the comprehensive reduction coefficient, with a value of 0.7, COD represents the COD generation amount per capita of domestic sewage, with a value of 0.037 (kg / person·d), B OIndicates the maximum methane production capacity of organic matter, with a value of 0.25 (kgCH 4 / kgCOD Cr ), η l Indicates the removal rate of organic matter by natural land treatment, with a value of 40%. MCF represents the methane correction factor, with a default value of 0.01 for aerobic treatment processes.

[0025] Furthermore, the algorithm for calculating carbon emissions during the collection process in step S5 is specifically as follows:

[0026] Calculate the methane emissions during sewage collection: Based on the water volume monitoring data at the facility entrance and the COD degradation rate during sewage collection, calculate the methane emissions during sewage collection and convert them into carbon emissions. The formula is as follows:

[0027]

[0028] In the above formula, C CH4_c Represents the direct CH4 emissions (kgCH4) of the sewered sewage within the service area, PRPc represents the number of permanent residents connected to the sewer within the service area (persons), Represents the comprehensive reduction coefficient, with a value of 0.7, COD represents the per capita domestic sewage COD generation amount of 0.037 (kg / person·d), Bo represents the maximum methane production capacity of organic matter, with a value of 0.25 (kgCH 4 / kgCOD Cr ), η c Represents the removal rate of organic matter in the collection system, with a value of 30%, and T represents the calculation time period for this time (d).

[0029] Furthermore, the algorithm for calculating carbon emissions during the treatment process in step S6 is specifically as follows:

[0030] Step S601: Calculate the methane emissions during sewage treatment: Calculate the methane emissions during sewage treatment based on the COD water quality and treatment water volume monitoring data at the facility entrance and exit. The formula is as follows:

[0031] C CH4_t = Q × (COD in - COD out ) ÷ 1000 × B 0 × MCF

[0032] In the above formula, C CH4_t Represents the methane (CH 4 ) emissions (kgCH 4 ) during sewage treatment, Q represents the sewage treatment volume monitored during the calculation time period for this time (m 3 ), COD in Represents the monitored influent COD CrConcentration (mg / L), COD out Indicates the monitored effluent COD Cr Concentration (mg / L), B O Indicates the maximum methane production capacity of organic matter, with a value of 0.25 (kgCH 4 / kgCOD Cr ), MCF represents the methane correction factor, with a default value of 0.01 for aerobic treatment processes, a default value of 0.1 for anaerobic treatment processes or treatment processes dominated by constructed wetlands, and a default value of 0.05 for aerobic and anaerobic combined processes;

[0033] Step S602, Calculate the nitrous oxide emissions during the sewage treatment process: Calculate the methane emissions during the sewage treatment process based on the TN water quality and treatment water volume monitoring data at the inlet and outlet of the facility. The formula is as follows:

[0034] S N2O =[Q i ×(TN in -TN out )÷1000]×EF N2O ×C N2O / N2

[0035] In the above formula, S N2O Indicates the nitrous oxide (N 2 O) emissions (kgN 2 O) during the sewage treatment process, Q represents the monitored sewage treatment volume (m 3 ) during this calculation period, TN in Indicates the monitored influent TN concentration (mg / L), TN out Indicates the monitored effluent TN concentration (mg / L), EF N2O Indicates the N 2 O emission factor, with a value of 0.016 (kgN 2 O-N / kgTN), C N2O / N2 Indicates the mass conversion coefficient of N 2 O / N 2 , with a value of 44 / 28;

[0036] Step S603, Determine whether the facility adds drugs: If drugs are added, go to step S604 to convert the nitrogen emissions of the drug dosage; otherwise, directly go to step S605 to convert the carbon emissions of the electricity consumption;

[0037] Step S604, Convert the carbon emissions of the drug dosage: According to the drug dosage data during the facility treatment process, convert the carbon emissions generated by the drug. The formula is as follows:

[0038] C CH =CH×EFC H

[0039] In the above formula, C CH represents the emission amount of the chemical dosage in the sewage treatment process (kgCO2eq), CH k represents the chemical dosage during this calculation period (kg), and EF CH_k represents the carbon emission factor of the chemical agent (kgCO2e / kg);

[0040] Furthermore, if there are multiple chemical agents, they are accumulated; if no chemical agent is added, the carbon emission of this item is 0;

[0041] Step S605, convert the carbon emission of electricity consumption: According to the electricity consumption data during the facility treatment process, convert the carbon emission during the power generation process. The formula is as follows:

[0042] C E = (E - E g ) × EF E

[0043] In the above formula, C E represents the emission amount of electricity consumption (kgCO 2 eq), E represents the electricity consumption during this calculation period (kW·h), E g represents the green energy power generation during this calculation period (kW·h), which is solar energy or wind energy, and is 0 if not available, and EF E represents the carbon emission factor of the power grid (kgCO 2 eq / kWh);

[0044] Step S606, calculate the vegetation carbon absorption amount of the facility: According to the vegetation area covered in the facility, calculate the vegetation carbon absorption amount of this facility. The formula is as follows:

[0045] C P = (P i - P cs ) ÷ 1000 ÷ (24 × T)

[0046] In the above formula, C P represents the emission amount of electricity consumption (kgCO 2 eq), P i represents the vegetation area of the facility (m 2 ), P cs represents the carbon sequestration capacity of the plant (gCO 2 e / (m2·d)), and T represents this calculation period (d);

[0047] Furthermore, if there are multiple vegetations, they are accumulated.

[0048] Furthermore, in step S7, calculate the total carbon emission, and accumulate the carbon emissions of all the above items. The formula is as follows:

[0049] E T = C CH4_d × GWP CH4 + C CH4_c × GWP CH4 + C CH4_t × GWP CH4 + S N2O × GWP N2O + C CH + C E - C P

[0050] In the above formula, E T represents the total carbon emissions (kg CO 2 eq), C CH4_d represents the direct emissions of CH 4 from the unsewered sewage within the service area (kgCH 4 ), GWP CH4 represents the global warming potential value of CH 4 , with a value of 27, C CH4_c represents the direct emissions of CH 4 from the sewered sewage within the service area (kgCH 4 ), C CH4_t represents the methane (CH 4 ) emissions during the sewage treatment process (kgCH 4 ), S N2O represents the nitrous oxide (N 2 O) emissions during the sewage treatment process (kgN 2 O), GWP N2O represents the global warming potential value of N 2 O, with a value of 273, C CH represents the emissions of the chemical dosage during the sewage treatment process (kgCO 2 eq), C E represents the emissions of the electricity consumption (kgCO 2 eq), C P represents the emissions of the electricity consumption (kgCO 2 eq).

[0051] The present invention also discloses a computer device, which includes a processor and a memory. The memory is used to store a computer program, and the computer program includes a program. It is characterized in that: the processor is configured to call the computer program and execute the steps of the carbon emission assessment and accounting method for rural domestic sewage discharge and treatment process described in any one of the above.

[0052] The present invention also discloses a computer-readable storage medium storing a computer program, characterized in that: the computer program is executed by a processor to implement the method for evaluating and calculating the carbon emissions of the rural domestic sewage discharge and treatment process described in any one of the above.

[0053] Advantages of the present invention:

[0054] 1. The present invention solves the lack of a calculation method for the overall carbon emissions of domestic sewage discharge and treatment in a village or a certain area of the countryside. Considering the centralized collection, on-site treatment and non-collected situations in the village, according to the drainage status, sewage collection status and sewage treatment status of rural sewage in the area, the carbon emissions of all drainage systems for non-collected and collected treatment of the overall domestic sewage in the village are calculated overall, and the calculation results have good integrity.

[0055] 2. The method and device of the present invention can automatically calculate at the event site, have a short calculation period and can be adjusted, obtain results quickly, and do not require manual intervention in the calculation process except for the initial setting.

[0056] 3. The method and device provided by the present invention can achieve carbon emission assessment and calculation without installing on-line water quality monitoring equipment, and have good economy.

[0057] 4. Through the analysis of carbon emissions in each process link involved in the rural domestic sewage discharge and treatment process, the present invention can be used for various physical and biological treatment processes widely used in rural domestic sewage treatment in China at present, quantify the carbon emissions and energy consumption in all links involved in the sewage discharge and treatment process, and have good adaptability.

[0058] 5. The present invention can quantify the carbon emissions in the rural domestic sewage discharge and treatment process. Description of the drawings

[0059] Figure 1 is a schematic structural diagram of the device for real-time calculation of carbon emissions in the rural domestic sewage discharge and treatment process of the present invention;

[0060] Figure 2 is a flowchart of the operation of the device for real-time calculation of carbon emissions in the rural domestic sewage discharge and treatment process of the present invention;

[0061] Figure 3 is a flowchart of the detailed carbon emission algorithm of the method for real-time calculation of carbon emissions in the rural domestic sewage discharge and treatment process of the present invention. Specific embodiments

[0062] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0063] Embodiment 1

[0064] This embodiment provides an evaluation and accounting device for the carbon emissions in the process of rural domestic sewage discharge and treatment, as Figure 1 shown, which includes a water quality sensor 1, a flow sensor 2, a chemical dosing pump 3, an electric meter 4, a data access module 5, a carbon emissions calculation module 6, a data storage module 7 and a result output module 8.

[0065] The water quality sensor 1 is a COD and TN monitoring sensor, which monitors and collects the COD and TN values of the influent and effluent; the water volume sensor 2 is a flow sensor, which monitors and collects the sewage treatment volume; the chemical dosing pump 3 is a chemical flow metering pump, which monitors and collects the chemical dosage; the electric meter 4 monitors and collects the electricity consumption for sewage treatment and the power generation of new energy; the data access module 5 accesses the monitoring data of the water quality sensor 1, the water volume sensor 2, the chemical dosing pump 3 and the electric meter 4; the carbon emissions calculation module 6 calculates the carbon emissions by combining the data accessed by the data access module 5 and the configuration data stored in the data storage module 7; the carbon emissions data storage module 7 stores the configuration data and the carbon emissions data calculated by the carbon emissions calculation module 6.

[0066] The usage method, as Figure 2 shown, includes the following steps:

[0067] 1. Data access, access the collected data, influent COD, effluent COD, influent TN, effluent TN, treatment water volume, chemical dosage, electricity consumption, green energy power generation;

[0068] 2. Obtain the basic data of the treatment facility, obtain the regional resident population, the population connected to the sewage pipe network in the region, the population with direct sewage discharge in the region, the length of the centralized treatment pipe network, the length of the urban sewage treatment pipe network, single-household treatment facilities, centralized treatment facility data, vegetation coverage area, plant type, process type data;

[0069] 3. Obtain the configuration data, obtain the comprehensive reduction coefficient, the per capita domestic sewage COD generation amount, the maximum methane generation capacity of organic matter, the organic matter removal rate in the collection system, the methane correction factor (obtained according to the process type), the N2O emission factor, the chemical carbon emission factor, the grid carbon emission factor, the carbon sequestration capacity of plants, the global warming potential value of methane gas and the global warming potential value of nitrous oxide gas;

[0070] 4. Check and update the basic data, the collected monitoring data and the configuration data

[0071] 5. Store the basic data, the configuration data and the collected monitoring data.

[0072] 6. Trigger the carbon emissions calculation regularly, calculate the sub-item data of the carbon emissions in the process of rural sewage discharge according to the basic data, the monitored and collected data and the configuration data, see Figure 2 ;

[0073] 7. Calculate the total carbon emissions during the rural sewage discharge process in the calculation area.

[0074] 8. Store the carbon emissions and output.

[0075] Embodiment 2

[0076] This embodiment provides an evaluation and accounting method for the carbon emissions during the rural domestic sewage discharge and treatment process, as Figure 3 shown, including the following steps:

[0077] S1. Obtain the basic data of rural areas in the region, including the data of the permanent population in rural areas, the population connected to the sewage pipe network, the population with direct sewage discharge, the process types of sewage treatment facilities, the types and areas of plants, etc.;

[0078] S2. Obtain the configuration data, including the comprehensive reduction coefficient, the per capita COD generation amount of domestic sewage, the maximum methane generation capacity of organic matter, the removal rate of organic matter in the collection system, the methane correction factor (obtained according to the process type), the N2O emission factor, the carbon emission factor of chemical agents, the carbon emission factor of the power grid, the carbon sequestration capacity of plants, the global warming potential value of methane gas, and the global warming potential value of nitrous oxide gas, etc.;

[0079] S3. Input or access the data, access the collected data or test data of the sewage treatment facilities, including the influent COD, the effluent COD, the influent TN, the effluent TN, the treated water volume, the chemical agent dosage, the electricity consumption, and the green energy power generation;

[0080] S4. Calculate the carbon emissions of the unsewered sewage;

[0081] S5. Calculate the carbon emissions during the sewage collection process;

[0082] S6. Calculate the carbon emissions during the treatment process of the sewage treatment terminal;

[0083] S7. Calculate the total carbon emissions: the carbon emissions during the time period between the current time and the end of the last calculation;

[0084] S8. Store the carbon emissions;

[0085] S9. Output the carbon emissions.

[0086] Further, the algorithm for calculating the carbon emissions of the unsewered sewage in step S4 is specifically as follows:

[0087] Calculate the methane (CH 4 ) emissions of the unsewered sewage: The purification process of the unsewered sewage can be calculated according to the natural treatment mode of land or water body, and calculate the methane emissions during the sewage discharge process. The formula is as follows:

[0088]

[0089] In the above formula, C CH4_d represents the direct emission of CH in the unsewered sewage within the service scope (kgCH 4 ), PRP 4 represents the number of unsewered permanent residents within the service scope (persons), d represents the comprehensive reduction coefficient, with a value of 0.7, COD represents the per capita domestic sewage COD generation amount, with a value of 0.037 (kg / person·d), B represents the maximum methane generation capacity of organic matter, with a value of 0.25 (kgCH O / kgCOD 4 ), η Cr represents the removal rate of organic matter by natural land treatment, with a value of 40%, MCF represents the methane correction factor, and the default value for treatment processes mainly based on anaerobic treatment processes or constructed wetlands is 0.01. l represents the removal rate of organic matter by natural land treatment, with a value of 40%, MCF represents the methane correction factor, and the default value for treatment processes mainly based on anaerobic treatment processes or constructed wetlands is 0.01.

[0090] Further, the algorithm for calculating the carbon emissions during the collection process in step S5 is specifically as follows:

[0091] Calculate the methane (CH 4 ) emissions during the sewage collection process: According to the water volume monitoring data at the facility entrance and the COD degradation rate during the sewage collection process, calculate the methane emissions during the sewage collection process and convert them into carbon emissions. The formula is as follows:

[0092]

[0093] In the above formula, C CH4_c represents the direct emission of CH in the sewered sewage within the service scope (kgCH 4 ), PRP 4 represents the number of sewered permanent residents within the service scope (persons), c represents the comprehensive reduction coefficient, with a value of 0.7, COD represents the per capita domestic sewage COD generation amount of 0.037 (kg / person·d), B represents the maximum methane generation capacity of organic matter, with a value of 0.25 (kgCH O / kgCOD 4 ), η Cr represents the removal rate of organic matter in the collection system, with a value of 30%, T represents the time period (d) for this calculation. c represents the removal rate of organic matter in the collection system, with a value of 30%, T represents the time period (d) for this calculation.

[0094] Further, the algorithm for calculating the carbon emissions during the treatment process in step S6 is specifically as follows:

[0095] Step S601 Calculate the methane (CH4) emissions during the sewage treatment process: Calculate the methane emissions during the sewage treatment process based on the COD water quality and treated water volume monitoring data at the inlet and outlet of the facility. The formula is as follows:

[0096] C CH4_t -Q × (COD in -COD out ) ÷ 1000 × B 0 × MCF

[0097] In the above formula, C CH4_t represents the methane (CH 4 ) emissions (kgCH 4 ) during the sewage treatment process, Q represents the sewage treatment volume (m 3 ) monitored during this calculation period, COD in represents the monitored influent COD Cr concentration (mg / L), COD out represents the monitored effluent COD Cr concentration (mg / L), B O represents the maximum methane production capacity of organic matter, with a value of 0.25 (kgCH 4 / kgCOD Cr ), and MCF represents the methane correction factor. The default value for aerobic treatment processes such as AO is 0.01, the default value for treatment processes mainly based on anaerobic treatment processes or constructed wetlands is 0.1, and the default value for aerobic and anaerobic combined processes is 0.05.

[0098] Step S602 Calculate the nitrous oxide (N 2 O) emissions during the sewage treatment process: Calculate the methane emissions during the sewage treatment process based on the TN water quality and treated water volume monitoring data at the inlet and outlet of the facility. The formula is as follows:

[0099] S N2O =[Q i × (TN in -TN out ) ÷ 1000] × EF N2O × C N2O / N2

[0100] In the above formula, S N2O represents the nitrous oxide (N 2 O) emissions (kgN 2 O) during the sewage treatment process, Q represents the sewage treatment volume (m 3 ) monitored during this calculation period, TN in represents the monitored influent TN concentration (mg / L), TN out represents the monitored effluent TN concentration (mg / L), EFN2O Denote N 2 O emission factor, with a value of 0.016 (kgN 2 O-N / kgTN), C N2O / N2 Denote N 2 O / N 2 Mass conversion coefficient, with a value of 44 / 28.

[0101] Step S603 determines whether the facility adds chemicals: If chemicals are added, go to step S604 to convert the nitrogen emissions of the chemical dosage; otherwise, directly go to step S605 to convert the carbon emissions of the electricity consumption.

[0102] Step S604 converts the carbon emissions of the chemical dosage: According to the chemical dosage data in the facility treatment process, convert the carbon emissions generated by the chemicals. The formula is as follows:

[0103] C CH = CH × EF CH

[0104] In the above formula, C CH Represents the emissions of the chemical dosage in the sewage treatment process (kgCO2eq), CH k Represents the chemical dosage during this calculation period (kg), EF CH_k Represents the chemical carbon emission factor (kgCO2e / kg).

[0105] Furthermore, if there are multiple chemicals, accumulate them. If no chemicals are added, the carbon emissions for this item are 0.

[0106] Step S605 converts the carbon emissions of the electricity consumption: According to the electricity consumption data in the facility treatment process, convert the carbon emissions during the power generation process. The formula is as follows:

[0107] C E = (E - E g ) × EF E

[0108] In the above formula, C E Represents the emissions of the electricity consumption (kgCO2eq), E represents the electricity consumption during this calculation period (kW·h), E g Represents the green energy power generation during this calculation period (kW·h), mainly solar or wind energy. If not, it is 0, EF E Represents the grid carbon emission factor (kgCO 2 eq / kWh).

[0109] Step S606 calculates the vegetation carbon absorption of the facility: According to the vegetation area covered in the facility, calculate the vegetation carbon absorption of this facility. The formula is as follows:

[0110] CP = (P i - P cs ) ÷ 1000 ÷ (24 × T)

[0111] In the above formula, C P represents the emission amount of electricity consumption (kgCO 2 eq), P i represents the vegetation area of the facility (m 2 ), P cs represents the carbon sequestration capacity of plants (gCO 2 e / (m2·d)), and T represents the calculation time period for this time (d)

[0112] Furthermore, if there are multiple vegetations, they are accumulated.

[0113] Furthermore, in step S7, calculate the total carbon emission amount by accumulating the carbon emission amounts of all the above items. The formula is as follows:

[0114] E T = C CH4_d × GWP CH4 + C CH4_c × GWP CH4 + C CH4_t × GWP CH4 + S N2O × GWP N2O + C CH + C E - C P

[0115] In the above formula, E T represents the total carbon emission amount (kg CO 2 eq), C CH4_d represents the direct emission amount of CH 4 from the unsewered sewage within the service scope (kgCH 4 ), GWP CH4 represents the global warming potential value of CH 4 , with a value of 27, C CH4_c represents the direct emission amount of CH 4 from the sewered sewage within the service scope (kgCH 4 ), C CH4_t represents the methane (CH 4 ) emission amount during the sewage treatment process (kgCH 4 ), S N2O represents the nitrous oxide (N 2 O) emission amount during the sewage treatment process (kgN 2 O), GWP N2O represents the global warming potential value of N 2 O, with a value of 273, C CHIndicates the emission of the chemical dosage in the sewage treatment process (kgCO 2 eq), C E Indicates the emission of electricity consumption (kgCO 2 eq), C P Indicates the emission of electricity consumption (kgCO2eq).

[0116] Table 1: Main carbon emission factors

[0117]

[0118]

[0119] Example 3

[0120] This example provides a computer device, including a memory and a processor. The processor is used to read the instructions stored in the memory to execute the carbon emission calculation and evaluation method for the rural domestic sewage discharge process in the above example.

[0121] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0122] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be realized by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0123] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including instruction means, and the instruction means realizes the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0124] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple blocks.

[0125] Example 4

[0126] This embodiment also provides a computer-readable storage medium storing computer-executable instructions that can execute a method for quantitatively evaluating carbon emissions from urban sewage treatment facilities in any of the above method embodiments. Wherein, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk (Hard Disk Drive, abbreviation: HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above types of memories.

[0127] Example 5

[0128] This embodiment also provides a use case of this method and device, which is actually applied at the site of a rural domestic sewage treatment facility in the East China region. The specific application method includes: installing the device at the site of the rural domestic sewage treatment facility and connecting it to a terminal flow meter, a water quality monitoring sensor, an electricity consumption monitoring sensor, and a chemical dosing metering sensor. There are 3 sewage treatment facilities in the region, namely Facility 1, Facility 2, and Facility 3. The calculation results of carbon emissions during 24-hour operation within a certain day in the region are as follows:

[0129] The relevant information of Facility 1 is as follows:

[0130]

[0131]

[0132] The relevant information of Facility 2 is as follows:

[0133]

[0134]

[0135] The relevant information of Facility 3 is as follows:

[0136]

[0137]

[0138] The carbon emission calculation results of Village 1 are as follows:

[0139] Facility 1 10.31 kg Facility 2 99.36 kg Facility 3 54.69 kg Total 164.36 kg

[0140] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A carbon emission assessment and accounting device for rural domestic sewage discharge and treatment process, comprising a data access module, a carbon emission calculation module, a data storage module, and a result output module; characterized in that: The data access module receives data collected by the water quality sensor, flow sensor, medicine metering pump and electric meter; The carbon emission calculation module calculates the carbon emission during the operation of the agricultural sewage facility according to the water quality, water quantity, dosage, electricity consumption and configuration data connected; The data storage module stores the configuration data required for calculating carbon emissions and stores the calculated carbon emissions data; The result output module is connected to the storage module and is used to output the result data of the analysis and calculation.

2. According to claim 1, a carbon emission assessment and accounting device for rural domestic sewage discharge and treatment process is characterized by: The water quality sensors are COD and TN sensors.

3. According to claim 1, a carbon emission assessment and accounting device for rural domestic sewage discharge and treatment process is characterized by: The data collected by the electric meter are the electricity consumption for sewage treatment and the electricity generated by new energy.

4. A method for evaluating and calculating carbon emissions during rural domestic sewage discharge and treatment, characterized by: It includes the following steps: S1. Obtain regional rural basic data: obtain rural permanent population, sewage access population, sewage direct discharge population, sewage treatment facility process type, plant type and area data; S2. Obtain configuration data: Obtain comprehensive reduction factor, per capita domestic sewage COD generation, maximum methane generation capacity of organic matter, organic matter removal rate in the collection system, methane correction factor, N2O emission factor, agent carbon emission factor, power grid carbon emission factor, plant carbon fixation capacity, methane gas global warming potential value and nitrous oxide gas global warming potential value data; S3. Input or access data: access to the collected data or test data of sewage treatment facilities, including inlet COD, outlet COD, inlet TN, outlet TN, treated water volume, dosage, electricity consumption, and green energy power generation; S4. Calculate the carbon emissions of unmanaged sewage; S5. Calculate carbon emissions during sewage collection; S6. Calculate the carbon emissions during the sewage treatment terminal treatment process; S7. Calculate total carbon emissions: calculate the carbon emissions in the time period between the current time and the end of the last calculation; S8, storage carbon emissions; S9. Output carbon emissions.

5. The method for evaluating and calculating carbon emissions during rural domestic sewage discharge and treatment according to claim 4 is characterized by: The specific algorithm for calculating the carbon emissions of unmanaged sewage in step S4 is: Calculation of methane emissions from unmanaged sewage: The unmanaged sewage purification process can be calculated according to the natural treatment mode of land or water body. The methane emissions during sewage discharge are calculated as follows: In the above formula, C CH4_d PRP is the direct CH4 emission from unmanaged sewage within the service area (kgCH4). d Indicates the number of unmanaged permanent residents within the service area (persons), represents the comprehensive reduction coefficient, which is 0.7; COD represents the COD production of domestic sewage per capita, which is 0.037 (kg / person·d); Bo represents the maximum methane production capacity of organic matter, which is 0.25 (kgCH4 / kgCOD Cr ), η l It represents the removal rate of organic matter by natural land treatment, which is 40%. MCF represents the methane correction factor, which is 0.01 by default for aerobic treatment process.

6. The method for evaluating and calculating carbon emissions during rural domestic sewage discharge and treatment according to claim 4 is characterized by: The specific algorithm for calculating the carbon emissions during the collection process in step S5 is: Calculate methane emissions during sewage collection: Based on the water volume monitoring data at the facility inlet and the COD degradation rate during sewage collection, calculate the methane emissions during sewage collection and convert them into carbon emissions using the following formula: In the above formula, C CH4_c It represents the direct CH4 emission of sewage in the service area (kgCH4), PRP c Indicates the number of permanent residents managed within the service area (persons), represents the comprehensive reduction coefficient, which is 0.7; COD represents the COD production of domestic sewage per capita, which is 0.037 (kg / person·d); Bo represents the maximum methane production capacity of organic matter, which is 0.25 (kgCH4 / kgCOD Cr ), η c It represents the organic matter removal rate in the collection system, which is 30%, and T represents the calculation time period (d).

7. The method for evaluating and calculating carbon emissions during rural domestic sewage discharge and treatment according to claim 4 is characterized by: The specific algorithm for calculating carbon emissions in step S6 is: Step S601, calculate the methane emissions during the sewage treatment process: calculate the methane emissions during the sewage treatment process based on the COD water quality and treated water volume monitoring data at the inlet and outlet of the facility, the formula is as follows: C CH4_t =Q×(CODE in -CODE out )÷1000×B0×MCF In the above formula, C CH4_t represents the methane (CH4) emission (kgCH4) during the sewage treatment process, and Q represents the sewage treatment volume monitored during this calculation period (m 3 ), COD in Indicates the monitored influent COD Cr Concentration (mg / L), COD out Indicates the monitored effluent COD Cr concentration (mg / L), Bo represents the maximum methane production capacity of organic matter, and its value is 0.25 (kgCH4 / kgCOD Cr ), MCF represents the methane correction factor, with a default value of 0.01 for aerobic treatment process, 0.1 for anaerobic treatment process or constructed wetland as the main treatment process, and 0.05 for aerobic and anaerobic combined process; Step S602, calculate the nitrous oxide emissions during the sewage treatment process: calculate the methane emissions during the sewage treatment process based on the TN water quality and treated water volume monitoring data at the inlet and outlet of the facility, the formula is as follows: S N2O =[Q i ×(TN in -TN out )÷1000]×EF N2O ×C N2O / N2 In the above formula, S N2O represents the nitrous oxide (N2O) emission (kgN2O) during the sewage treatment process, and Q represents the sewage treatment volume monitored during this calculation period (m 3 ), TN in Indicates the monitored influent TN concentration (mg / L), TN out Indicates the monitored effluent TN concentration (mg / L), EF N2O represents the N2O emission factor, which is 0.016 (kgN2O-N / kgTN), C N2O / N2 Indicates the mass conversion coefficient of N2O / N2, with a value of 44 / 28; Step S603, determine whether the facility has added medicine: if it has added medicine, go to step S604 to convert the nitrogen emissions of the added medicine; otherwise, go directly to step S605 to convert the carbon emissions of the electricity consumption; Step S604, converting the carbon emissions of the dosage: converting the carbon emissions generated by the agent according to the dosage data during the facility treatment process, the formula is as follows: C CH =CH×EFC H In the above formula, C CH Indicates the amount of chemical added during sewage treatment (kgCO2eq), CH k Indicates the dosage (kg) during this calculation period, EF CH_k Indicates the carbon emission factor of the agent (kgCO2e / kg); Furthermore, if there are multiple agents, they are added cumulatively; if no agent is needed, the carbon emission of this item is 0; Step S605, converting the carbon emissions of electricity consumption: converting the carbon emissions of the power generation process according to the electricity consumption data in the facility processing process, the formula is as follows: C E =(EE g )×EF E In the above formula, C E represents the emission of electricity consumption (kgCO2eq), E represents the electricity consumption during this calculation period (kW·h), and E g Indicates the amount of green energy generated during this calculation period (kW·h), which can be solar energy or wind energy. If there is no green energy, it is 0. E represents the carbon emission factor of the power grid (kgCO2eq / kWh); Step S606, calculate the carbon absorption of vegetation in the facility: calculate the carbon absorption of vegetation in the facility according to the area of ​​vegetation covered in the facility, the formula is as follows: C P =(P i -P cs )÷1000÷(24×T) In the above formula, C P Indicates the emissions from electricity consumption (kgCO2eq), P i Indicates the vegetation area of ​​the facility (m 2 ), P cs represents the carbon fixation capacity of plants (gCO2e / (m2·d)), T represents the calculation time period (d); Furthermore, if there are multiple vegetations, they are accumulated.

8. The method for evaluating and calculating carbon emissions during rural domestic sewage discharge and treatment according to claim 4 is characterized by: In step S7, the total carbon emissions are calculated by accumulating the carbon emissions of all the above sub-items. The formula is as follows: E T =C CH4_d ×GWP CH4 +C CH4_c ×GWP CH4 +C CH4_t ×GWP CH4 +S N2O ×GWP N2O +CC H +C E -C P In the above formula, E T represents the total carbon emissions (kg CO2 eq), C CH4_d Indicates the direct CH4 emissions from unmanaged sewage within the service area (kgCH4), GWP CH4 It represents the global warming potential of CH4, which is 27. CH4_c It represents the direct CH4 emission of sewage in the service area (kgCH4), C CH4_t Indicates the methane (CH4) emissions (kgCH4) during sewage treatment, S N2O Indicates the amount of nitrous oxide (N2O) emitted during sewage treatment (kgN2O), GWP N2O It represents the global warming potential of N2O, which is 273, C CH Indicates the amount of chemical added during sewage treatment (kgCO2eq), C E Indicates the emission of electricity consumption (kgCO2eq), C P Indicates the emissions from electricity consumption (kgCO2eq).

9. A computer device, comprising a processor and a memory, wherein the memory is used to store a computer program, wherein the computer program comprises a program, characterized in that: The processor is configured to call the computer program to execute the steps of the method for assessing and calculating carbon emissions from rural domestic sewage discharge and treatment processes as described in any one of claims 4 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that: The computer program is executed by a processor to implement the method for assessing and calculating carbon emissions from rural domestic sewage discharge and treatment processes as described in any one of claims 4 to 8.

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