CN115392757A - Quantitative evaluation method and device for carbon emission of town sewage treatment facility - Google Patents
Quantitative evaluation method and device for carbon emission of town sewage treatment facility Download PDFInfo
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Abstract
The invention discloses a quantitative evaluation method and a device for carbon emission of a town sewage treatment facility, wherein the method comprises the following steps: acquiring original data of a pipe network and original data of a sewage treatment plant, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant; determining the total carbon emission amount of sewage treatment based on the carbon emission amount collected by a pipe network, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment; determining the total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment; determining the total carbon emission amount of the target research area based on the total carbon emission amount of the drainage area; and evaluating the carbon emission of the urban sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area. The method realizes quantitative evaluation of carbon emission of urban sewage treatment facilities.
Description
Technical Field
The invention relates to the technical field of carbon emission evaluation, in particular to a quantitative evaluation method and device for carbon emission of urban sewage treatment facilities.
Background
The urban infrastructure is an energy-intensive and carbon-emission-intensive project, the sewage treatment facility is an important content of urban infrastructure planning, technologies such as quantification, monitoring, collection and evaluation of carbon emission of the sewage treatment facility are always important in the academic world and the industry, the quantification of the carbon emission is a premise of subsequent treatment, particularly 3060 double-carbon targets are provided, the quantification method of the carbon emission of the sewage treatment facility is concerned more, the carbon emission is considered more in the construction and operation of the sewage treatment facility, and energy consumption, medicine consumption, greenhouse Gas (GHG) emission and the like in different processes of the sewage treatment facility are converted into carbon dioxide equivalent for quantification of the carbon emission.
However, most of the research or the technology lacks of integral consideration, for example, in the prior art, the direct carbon emission of the sewage treatment plant, the indirect carbon emission of the sewage treatment plant, the other carbon emission of the sewage treatment plant and the carbon recycling emission of the sewage treatment plant are respectively calculated by defining boundary conditions and calculation periods in the operation time, and then the quantitative calculation result of the carbon emission of the sewage treatment plant is obtained, and the calculation is mainly performed aiming at the carbon emission of a single sewage treatment plant; in the prior art, a comprehensive evaluation index system of carbon emission of a sewage treatment plant is constructed, the obtained comprehensive evaluation index of carbon emission is used for evaluating the carbon emission level of the sewage treatment plant, and the carbon emission is calculated by mainly considering 4 levels of carbon sources and carbon sinks, such as an energy consumption level, a resource reuse level, a carbon sink level and a carbon emission level; in the prior art, the greenhouse gas emission amount is calculated by calculating the emission factors of energy, sewage treatment and medicines, the activity level of greenhouse gas emission and the emission factors thereof, so that the technical problem that the existing carbon footprint metering method is not suitable for sewage treatment plants is solved, and the core is to determine the emission factors of different regions and different elements; in the prior art, the net carbon emission of the sewage plant in the operation stage is calculated by considering the carbon emission and the carbon emission reduction of the sewage plant in the operation stage, the method is mainly concentrated in the sewage treatment and sludge treatment process of the urban sewage treatment plant and the subsequent delivery treatment process, and the calculation content of the carbon emission collected by the sewage at the earlier stage is not considered.
The prior art mainly focuses on carbon emission of sewage treatment facilities such as sewage treatment plants and tail water wetlands, is insufficient in consideration of carbon emission of sewage collection facilities such as pipe networks, and is insufficient in consideration of carbon emission of the whole flow of collection, treatment and the like of the sewage treatment facilities, and the prior art mainly focuses on carbon emission monitoring and collection technologies of the sewage treatment facilities, and is less in technology in the aspect of evaluation of a quantitative method for carbon emission.
Most of the prior art is lack of overall consideration, mainly focuses on carbon emission of sewage treatment facilities such as sewage treatment plants, tail water wetlands and the like, and mainly has the following defects:
the carbon emission of sewage treatment facilities such as sewage treatment plants is mainly concerned, and the carbon emission of sewage collection facilities such as pipe networks is not considered enough;
secondly, the carbon emission in the operation process of a sewage treatment plant is focused, and the insufficient consideration is given to the carbon emission of the whole life cycle and the whole flow of the construction and the operation of sewage treatment facilities, the collection and the treatment and the like;
(III) focusing on a carbon emission monitoring and collecting technology of a sewage treatment facility, and making the technical consideration on the evaluation aspect of a carbon emission quantification method insufficient;
(IV) paying attention to the electric energy consumption of a sewage treatment plant in the aspect of indirect carbon emission, and having insufficient consideration on other aspects such as oil consumption;
(V) focusing on carbon emission, namely a carbon source, and less focusing on the function of resources generated in the middle process of sewage treatment, such as biogas power generation, in the aspect of carbon emission reduction, namely carbon sink;
(VI) most of the methods pay attention to carbon emission of a single layer such as carbon emission of a sewage treatment plant, carbon emission of a regional sewage treatment plant and the like, and the methods for simultaneously quantifying carbon emission from multiple layers such as sewage treatment facilities including a sewage treatment plant and the like, sewage collection and treatment facilities including a sewage treatment plant, a pipe network and the like, a sewage treatment system consisting of a plurality of sewage treatment facilities, a regional sewage treatment system and the like are insufficient.
Researches show that water resources, energy sources and carbon emission are closely related, a water supply and drainage system is used as an important content of town infrastructure and is also an energy-intensive and carbon-emission-intensive project, and the projects relate to a plurality of energy consumption and carbon emission, energy consumption such as equipment such as pumps and motors in a pipe network, aeration equipment in a sewage treatment plant, carbon emission consumption such as indirect carbon emission of the energy equipment, and greenhouse gas emission in each treatment process of sewage treatment; therefore, when quantifying the carbon emission of sewage treatment facilities, the energy consumption must be fully considered to obtain more comprehensive, accurate and credible results.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that most of the prior art is lack of overall consideration when quantifying the carbon emission of the sewage treatment facility and has less technology in the aspect of carbon emission quantification method evaluation, and provides a method and a device for quantifying the carbon emission of the town sewage treatment facility.
The embodiment of the invention provides a quantitative evaluation method for carbon emission of urban sewage treatment facilities, which comprises the following steps:
acquiring original data of a pipe network and original data of a sewage treatment plant, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant;
determining the total carbon emission amount of sewage treatment based on the carbon emission amount collected by a pipe network, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment;
determining the total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment;
determining the total carbon emission amount of the target research area based on the total carbon emission amount of the drainage area;
and evaluating the carbon emission of the urban sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
The quantitative evaluation method for carbon emission of the town sewage treatment facility increases quantitative evaluation of carbon emission of a pipe network on the basis of carbon emission of a traditional sewage treatment plant, realizes quantitative evaluation of carbon emission of sewage collection facilities such as the pipe network, determines the total carbon emission amount of sewage treatment based on the carbon emission amount of the pipe network, the carbon emission amount of the sewage treatment and the carbon emission amount of sludge treatment, further calculates the total carbon emission amount of the sewage treatment, the total carbon emission amount of a drainage area and the total carbon emission amount of a target research area, realizes simultaneous quantitative evaluation of multi-layer surface carbon emission of the sewage treatment system composed of the sewage treatment facilities such as a single sewage treatment plant, the sewage collection and treatment facilities such as the sewage treatment plant and the pipe network and a plurality of sewage treatment facilities, and further realizes quantitative evaluation of carbon emission of the town sewage treatment facility.
Optionally, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant, including:
determining the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the original data of the pipe network;
calculating the carbon emission collected by the pipe network according to the carbon emission of pipe network construction and the carbon emission of pipe network operation;
determining the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant based on the original data of the sewage treatment plant;
calculating the carbon emission of sewage treatment according to the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant;
determining the carbon emission consumed by the fuel of the sludge transport means based on the original data of the sewage treatment plant, and taking the carbon emission consumed by the fuel of the sludge transport means as the carbon emission of sludge treatment.
Optionally, determining the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the original data of the pipe network includes:
extracting the consumption of the pipe network construction material and the carbon content of the pipe network construction material in the original data of the pipe network, and determining the carbon emission of the pipe network construction based on the consumption of the pipe network construction material and the carbon content of the pipe network construction material;
extracting the running time of the pipe network and the rated power of the electric equipment of the pipe network in the original data of the pipe network, and determining the indirect emission of the operation energy consumption of the pipe network based on the running time of the pipe network and the rated power of the electric equipment of the pipe network;
extracting the pipe network dissipation direct emission in the original data of the pipe network, and calculating the pipe network operation carbon emission based on the pipe network operation energy consumption indirect emission and the pipe network dissipation direct emission.
Optionally, determining the carbon emission from the construction of the sewage treatment plant and the carbon emission from the operation of the sewage treatment plant based on the raw data of the sewage treatment plant comprises:
extracting the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant in the original data of the sewage treatment plant, and determining the construction carbon emission of the sewage treatment plant based on the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant;
extracting the running time of the electrical equipment of the sewage treatment plant, the rated power of the electrical equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant from the original data of the sewage treatment plant, and determining the indirect emission of the operating energy consumption of the sewage treatment plant based on the running time of the electrical equipment of the sewage treatment plant, the rated power of the electrical equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant;
extracting the carbon content and the consumption of the chemical agent in the original data of the sewage treatment plant, and determining the indirect discharge amount of the chemical agent consumption based on the carbon content and the consumption of the chemical agent and the daily treatment capacity of the sewage treatment plant;
extracting the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant from the original data of the sewage treatment plant, and calculating the carbon emission amount of the sewage treatment plant based on the indirect emission amount consumed by the operating energy source of the sewage treatment plant, the indirect emission amount consumed by the chemical agent, the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant.
Optionally, determining the carbon emission consumed by the sludge transport means fuel based on raw data of the sewage treatment plant, and using the carbon emission consumed by the sludge transport means fuel as the carbon emission of the sludge treatment, comprising:
and extracting the running distance of the transport vehicle and the fuel efficiency of the transport vehicle in the original data of the sewage treatment plant, and determining the carbon emission amount of sludge treatment based on the running distance of the transport vehicle and the fuel efficiency of the transport vehicle.
Optionally, determining the total carbon emission amount of the sewage treatment based on the carbon emission amount collected by the pipe network, the carbon emission amount of the sewage treatment and the carbon emission amount of the sludge treatment, wherein a calculation formula of the total carbon emission amount of the sewage treatment is as follows:
in the above formula, G sewage_x Represents the total carbon emission of sewage treatment, G pipe_i Indicates that the pipe network collects carbon emission G plant_i Represents the carbon emission of sewage treatment, G sludge_i Indicating the carbon emission from sludge treatment.
Optionally, before collecting pipe network original data and sewage treatment plant original data, determining a pipe network collected carbon emission amount based on the pipe network original data, and determining a sewage treatment carbon emission amount and a sludge treatment carbon emission amount based on the sewage treatment plant original data, the method further includes:
dividing a target research area to generate a drainage area and a sewage treatment facility; wherein, the drainage zone includes a plurality of sewage treatment facilities, and sewage treatment facility includes sewage treatment plant and pipe network.
In the second aspect of this application, still propose a town sewage treatment facility carbon emission quantitative evaluation device, include:
the system comprises an acquisition module, a data processing module and a data processing module, wherein the acquisition module is used for acquiring original data of a pipe network and original data of a sewage treatment plant, determining carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining carbon emission amount for sewage treatment and carbon emission amount for sludge treatment based on the original data of the sewage treatment plant;
the first determining module is used for determining the total carbon emission amount of sewage treatment based on the carbon emission amount of pipe network collection, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment;
the second determination module is used for determining the total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment;
a third determination module for determining a total carbon emission amount of the target study area based on the total carbon emission amount of the drainage area;
and the evaluation module is used for evaluating the carbon emission of the town sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
Optionally, the acquisition module comprises:
the first determining sub-module is used for determining the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the original data of the pipe network;
the first calculation submodule is used for calculating the carbon emission collected by the pipe network according to the carbon emission for pipe network construction and the carbon emission for pipe network operation;
the second determination submodule is used for determining the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant based on the original data of the sewage treatment plant;
the second calculation submodule is used for calculating the carbon emission of sewage treatment according to the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant;
and the third determining submodule is used for determining the carbon emission consumed by the fuel of the sludge transport means based on the original data of the sewage treatment plant, and taking the carbon emission consumed by the fuel of the sludge transport means as the carbon emission of sludge treatment.
Optionally, the first determining sub-module includes:
the first determining unit is used for extracting the consumption of the pipe network construction material and the carbon content of the pipe network construction material in the original data of the pipe network, and determining the carbon emission amount of the pipe network construction based on the consumption of the pipe network construction material and the carbon content of the pipe network construction material;
the second determining unit is used for extracting the running time of the pipe network and the rated power of the electric equipment of the pipe network in the original data of the pipe network and determining the indirect emission of the operation energy consumption of the pipe network based on the running time of the pipe network and the rated power of the electric equipment of the pipe network;
and the third determining unit is used for extracting the pipe network dissipation direct emission in the original data of the pipe network and calculating the pipe network operation carbon emission based on the pipe network operation energy consumption indirect emission and the pipe network dissipation direct emission.
Optionally, the second determining sub-module includes:
the fourth determining unit is used for extracting the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant from the original data of the sewage treatment plant, and determining the construction carbon emission of the sewage treatment plant based on the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant;
the fifth determining unit is used for extracting the running time of the electric equipment of the sewage treatment plant, the rated power of the electric equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant from the original data of the sewage treatment plant, and determining the indirect emission of the operating energy consumption of the sewage treatment plant based on the running time of the electric equipment of the sewage treatment plant, the rated power of the electric equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant;
the sixth determining unit is used for extracting the carbon content and the consumption of the chemical agent in the original data of the sewage treatment plant and determining the indirect discharge amount of the chemical agent consumption based on the carbon content and the consumption of the chemical agent and the daily treatment capacity of the sewage treatment plant;
and the seventh determining unit is used for extracting the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant from the original data of the sewage treatment plant, and calculating the carbon emission amount of the sewage treatment plant based on the indirect emission amount consumed by the operating energy of the sewage treatment plant, the indirect emission amount consumed by chemical agents, the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant.
Optionally, the third determining submodule is further configured to extract the transport vehicle travel distance and the transport vehicle fuel efficiency in the raw data of the sewage treatment plant, and determine the sludge disposal carbon emission based on the transport vehicle travel distance and the transport vehicle fuel efficiency.
Alternatively, the calculation formula of the total carbon emission in the sewage treatment is as follows:
in the above formula, G sewage_x Represents the total carbon emission of the wastewater treatment, G pipe_i Indicates that the pipe network collects carbon emission G plant_i Indicates the carbon emission of wastewater treatment, G sludge_i Indicating the carbon emission from sludge treatment.
Optionally, the method further comprises:
dividing a target research area to generate a drainage area and a sewage treatment facility; wherein, the drainage zone includes a plurality of sewage treatment facilities, and sewage treatment facility includes sewage treatment plant and pipe network.
In a third aspect of the present application, a computer device is also presented, comprising a processor and a memory, wherein the memory is used for storing a computer program, the computer program comprises a program, and the processor is configured to invoke the computer program to execute the method of the first aspect.
In a fourth aspect of the present application, the present invention provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method of the first aspect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a quantitative evaluation method for carbon emission of a town sewage treatment facility in example 1 of the present invention;
FIG. 2 is a schematic diagram of a quantitative evaluation model of carbon emission from a town sewage treatment facility in example 1 of the present invention;
FIG. 3 is a flowchart of step S101 in embodiment 1 of the present invention;
FIG. 4 is a flowchart of step S1011 of embodiment 1 of the present invention;
FIG. 5 is a flowchart of step S1013 in embodiment 1 of the present invention;
fig. 6 is a schematic block diagram of a quantitative carbon emission evaluation device for a town sewage treatment facility in embodiment 2 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a quantitative evaluation method for carbon emission of urban sewage treatment facilities, as shown in fig. 1, comprising the following steps:
s101, collecting original data of a pipe network and original data of a sewage treatment plant, determining carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining carbon emission amount of sewage treatment and carbon emission amount of sludge treatment based on the original data of the sewage treatment plant.
Specifically, dividing a target research area to generate a drainage area and a sewage treatment facility; wherein, above-mentioned drain zone includes a plurality of sewage treatment facilities, and sewage treatment facility includes sewage treatment plant and pipe network.
Further, dividing a target research area into a plurality of drainage areas and a plurality of sewage treatment systems according to three levels, performing a carbon emission calculation step of forming 3 levels of the target research area (first level), the drainage areas (second level), the sewage treatment systems (third level) and the like, performing independent analysis and calculation on each sewage treatment system and each drainage area, summarizing results step by step, and finally obtaining carbon emission values of the three levels; wherein, the target research area is a target town area or a partial area to be evaluated or calculated; the drainage area is a plurality of units which divide a target research area according to administrative divisions or sewage collection and treatment relations, a common town is a sewage treatment system which is designed and constructed according to the administrative divisions, so that the target research area can be divided according to the administrative divisions to form drainage area units, and partial towns are not designed and constructed according to the administrative divisions due to the relative complexity of the sewage treatment system and can determine the drainage area units by referring to town planning data; sewage treatment facility, for the system integration of collecting, handling sewage in every water drainage district, mainly be sewage treatment plant and pipe network, sewage treatment facility probably includes a plurality of sewage treatment plant and the pipe network of collecting sewage, therefore, divide into a plurality of sewage treatment system with every water drainage district, every sewage treatment system includes sewage treatment facilities such as sewage treatment plant and pipe network, the sewage treatment system unit quantity that every water drainage district corresponds is confirmed according to the sewage collection relation of sewage treatment plant and pipe network, and collect sewage treatment system data.
Further, collecting basic data of a target research area, a drainage area and a sewage treatment facility; the basic data of the target research area comprises data such as the area, population, the number of sewage treatment plants, the length of a pipe network and area planning of the target research area; the basic data of the drainage areas comprise the quantity of the drainage areas, the area of each drainage area, the quantity and related data of sewage treatment systems of each drainage area, relation data of sewage treatment plants and pipe networks and the like; the basic data of the sewage treatment facility comprise pipe network original data, sewage treatment plant original data and the like.
Further, the original data of the pipe network can be divided into pipe network construction data, pipe network operation data and the like according to the life cycle; the pipe network construction data mainly comprise related data such as pipe network length, pore diameter, construction materials and the like, and can be obtained through town planning data or sewage treatment plant and pipe network design data, and further the carbon emission of pipe network construction can be calculated according to the pipe network length, the pore diameter and the type of the construction materials, and the unit energy consumption, the density of the pipe network construction materials and the carbon content in the materials in the manufacturing process of the pipe network construction materials can be obtained by looking up documents; the pipe network operation data mainly comprise pipe network operation time, pipe network electrical equipment and energy consumption thereof, dissipated carbon emission of pipe network operation and other data, the pipe network operation time can be obtained through real-time operation records, the pipe network electrical equipment and the energy consumption thereof can be obtained through calculation through design data, the pipe network operation data are obtained through calculation according to rated power, the operation time, the pipe network length, the aperture and the like of main electrical equipment of the pipe network, and the dissipated carbon emission of the pipe network operation can be obtained through monitoring.
Further, the data of the sewage treatment plant can be divided into construction data of the sewage treatment plant, operation data of the sewage treatment plant and the like according to the life cycle; the construction data of the sewage treatment plant mainly comprises the data of construction materials, design scale, water inlet and outlet characteristics and the like of the sewage treatment plant; the operation data of the sewage treatment plant mainly comprises electric energy consumption, operation time, daily treatment capacity, water inlet and outlet characteristics, chemical agent consumption, biogas generation amount of Biochemical process, dissipated carbon emission amount, sludge transportation energy consumption and the like of various electrical equipment of the sewage treatment plant, the main data of the sewage treatment plant can be directly collected from the operation record of the sewage treatment plant, relevant data can be collected from the operation record of the sewage treatment plant and calculated, the electric energy consumption of the sewage treatment plant can be calculated through the rated power, the operation time, the treatment capacity and other data of the main electrical equipment of the sewage treatment plant, and in order to obtain a relatively objective and scientific calculation result, the data values of the operation time and the treatment capacity of the sewage treatment plant are set to be an average value in 6 months or more, and the water inlet and outlet characteristics of the sewage, such as BOD (Biochemical oxygen demand) and other indexes of the sewage treatment plant can be used for calculating greenhouse gas emission; the sludge transportation energy consumption is mainly fuel energy consumption of a transportation vehicle, related fuel usage such as fuel oil data can be collected from a vehicle usage record or a driver, the fuel consumption is converted into equivalent electric energy consumption according to an oil-electricity conversion coefficient, the value of the oil-electricity conversion coefficient is determined to be 15.64kWh/L (kilowatt-hour/liter), similarly, other fuel consumptions in a sewage treatment plant can also be converted into electric energy consumption according to the oil-electricity conversion coefficient for carbon emission calculation, the chemical agent usage data of the sewage treatment plant can be collected through the operation record of the sewage treatment plant, the sludge transportation energy consumption is mainly usage data of different chemical agents and various chemical agents, and the density, the unit energy consumption and the carbon content of different materials are shown in the following table 1.
Table 1:
specifically, the carbon emission of town sewage treatment facilities is divided into 2 types including direct emission and indirect emission, and energy consumption (kWh/m) of corresponding processes can be considered 3 Kilowatt-hour/cubic meter) of greenhouse gas (kg CO) 2 eq/m 3 Kilogram carbon dioxide equivalent/cubic meter), direct emission of greenhouse gases in the corresponding process, and corresponding carbon emission reduction; calculating the energy consumption of each item, and then calculating the corresponding carbon emission, namely adding the greenhouse gas emission of each process, converting the greenhouse gas emission into the carbon emission, and adding the carbon emission and the carbon emission to sum up for calculation; wherein, the direct discharge is the greenhouse gas discharge directly generated by the sewage treatment facility, and comprises the greenhouse gas discharge in the sewage treatment process and the greenhouse gas discharge generated by the combustion of the marsh gas generated in the biochemical treatment process; the indirect emission is greenhouse gas emission corresponding to energy consumption in the related process of the sewage treatment facility, and is mainly carbon emission with energy consumption of sewage treatment facility construction materials, chemical agents required by operation and the like.
Further, the greenhouse gas is indirectly emitted, mainly greenhouse gas emission corresponding to energy consumption in different processes, and energy sources mainly include 4 types of electric energy, fuel, construction materials, chemical agents and the like, and are specifically shown in the following table 2:
table 2:
| Source | description of the invention | Energy consumption | Greenhouse gas emission |
| Electric energy | Pumps, motors, aeration devices, or the like | E L | G L |
| Fuel | Truck fuel for transporting sludge | E d | G d |
| Construction material | Construction material for sewage treatment facilities | E mt | G mt |
| Chemical agent | Chemical agent for operation of sewage treatment facility | E ch | G ch |
Further, in order to accurately quantify the carbon emission, the service life of the concrete structure is set to 50 years, and the service life of other materials such as steel and the like is set to 15 years.
It should be noted that the above energy is a broad concept of energy, and includes various primary energy, secondary energy and various energy resources with reduced consumption of resources, and the various resources include construction materials in the construction stage, drugs in the operation stage, and the like, for example, various energy and materials required in the construction stage of the sewage treatment plant, energy required in the operation stage of the sewage treatment plant, for example, electric energy and diesel oil, and various drug consumption resources required in the operation stage of the sewage treatment plant, for example, chemicals.
Further, the direct emission sources of greenhouse gases from different processes mainly include 1, namely, the emission of dissipated carbon from sewage collection systems and sewage treatment systems; the emission of the dissipated carbon is indirectly estimated according to the degradation rate of the organic matters in the pipe network, and the specific estimation steps are as follows: firstly, selecting a pipe network, and determining adjacent pump stations at two ends of the pipe network; then, monitoring the BOD concentration value of each pump station, and setting that 5 parallel samples need to be continuously taken to eliminate errors; and finally, calculating the BOD concentration value difference value (sampling sample average value) between the two pumping stations and dividing the BOD concentration value difference value by the length of the pipe network, namely the BOD degradation rate of the pipe network per kilometer, wherein 50% of the degraded BOD is greenhouse gas emission, namely dissipated carbon emission.
Furthermore, the greenhouse gas carbon emission reduction sources in different processes are mainly carbon emission generated by biogas combustion power generation generated by operating biochemical treatment in a sewage treatment plant, and whether the biogas is directly used for power generation or not, the biogas contains certain carbon, so the carbon emission is considered as a carbon emission item; the electric energy generated by the biogas power generation can be considered in the carbon emission reduction calculation range and used as a carbon emission reduction item.
And S102, determining the total carbon emission amount of the sewage treatment based on the carbon emission amount collected by the pipe network, the carbon emission amount of the sewage treatment and the carbon emission amount of the sludge treatment.
Wherein, the calculation formula of the total carbon emission amount in the sewage treatment is as follows:
in the above formula, G sewage_x Represents the total carbon emission of the wastewater treatment (i-th wastewater treatment facility), G pipe_i Indicates that (i-th sewage treatment facility) pipe network collects carbon emission G plant_i Indicates (i-th wastewater treatment facility) carbon emission in wastewater treatment, G sludge_i Indicates the carbon emission of sludge treatment (i-th wastewater treatment facility), G pipe_construction_i Indicates (i-th sewage treatment facility) pipe network construction carbonDischarge amount, G pipe_operation_i Indicates the carbon emission of the pipe network (i-th sewage treatment facility) operation, G plant_construction_i Indicates (i-th wastewater treatment facility) carbon emission amount of construction of wastewater treatment plant, G plant_operation_i Indicates (i-th sewage treatment facility) the carbon emission amount of operation of sewage treatment plant, G sludge_i Indicating the carbon emission from the sludge treatment (i-th sewage treatment facility).
And S103, determining the total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment.
Wherein, carbon emission summary calculation is carried out on a plurality of sewage treatment settings in the drainage area, and the total carbon emission G of the drainage area m drain_m The calculation formula of (a) is as follows:
and S104, determining the total carbon emission amount of the target research area based on the total carbon emission amount of the drainage area.
Wherein, the carbon emission of a plurality of water discharge areas in the target research area is calculated in a summary way, and the total carbon emission G of the target research area urban The calculation formula of (a) is as follows:
and S105, evaluating the carbon emission of the town sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
As shown in fig. 2, the carbon emission evaluation of the town sewage treatment facility is mainly based on the quality balance and life cycle theoretical model, the carbon emission calculation is performed based on greenhouse gas emission in the whole process of sewage collection, sewage treatment and sludge treatment, including sewage collection carbon emission, sewage treatment carbon emission and sludge treatment carbon emission, the total carbon emission amount of the drainage area and the total carbon emission amount of the target research area are further calculated, and the total carbon emission amount of the sewage treatment, the total carbon emission amount of the drainage area and the total carbon emission amount of the target research area are used as the evaluation result of the carbon emission of the town sewage treatment facility.
The method for quantitatively evaluating the carbon emission of the town sewage treatment facility, provided by the invention, is characterized in that the quantitative evaluation of the carbon emission of a pipe network is added on the basis of the carbon emission of the traditional sewage treatment plant, the quantitative evaluation of the carbon emission of the pipe network and other sewage collection facilities is realized, the total carbon emission amount of sewage treatment is determined on the basis of the carbon emission amount of pipe network collection, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment, the total carbon emission amount of sewage treatment, the total carbon emission amount of a drainage area and the total carbon emission amount of a target research area are calculated, and the quantitative evaluation of the carbon emission of the town sewage treatment facility is realized from a sewage treatment system consisting of a single sewage treatment plant and other sewage treatment facilities, a sewage treatment plant, a pipe network and other sewage collection and treatment facilities and a plurality of sewage treatment facilities to the simultaneous quantitative evaluation of the carbon emission of a plurality of layers of the sewage treatment system and other sewage treatment facilities.
Preferably, as shown in fig. 3, the determining, in step S101, the carbon emission amount collected by the pipe network based on the raw data of the pipe network, and the carbon emission amount for sewage treatment and the carbon emission amount for sludge treatment based on the raw data of the sewage treatment plant includes:
and S1011, determining the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the pipe network original data.
And S1012, calculating the carbon emission collected by the pipe network according to the carbon emission for pipe network construction and the carbon emission for pipe network operation.
Wherein, the pipe network collects carbon emission G pipe The calculation formula of (c) is as follows:
G pipe ＝G pipe_construction +G pipe_operation
in the above formula, G pipe_construction Indicates the carbon emission of pipe network construction, G pipe_operation And the carbon emission of the pipe network operation is shown.
And S1013, determining the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant based on the original data of the sewage treatment plant.
And S1014, calculating the carbon emission amount of the sewage treatment according to the construction carbon emission amount of the sewage treatment plant and the operation carbon emission amount of the sewage treatment plant.
Wherein, the carbon emission G of the sewage treatment plant The calculation formula of (c) is as follows:
G plant ＝G plant_construction +G plant_operation
in the above formula, G plant_construction Indicates the carbon emission of construction of a sewage treatment plant, G plant_operation Representing the carbon emission of the operation of the sewage treatment plant.
And S1015, determining the carbon emission consumed by the fuel of the sludge transport means based on the original data of the sewage treatment plant, and taking the carbon emission consumed by the fuel of the sludge transport means as the carbon emission of the sludge treatment.
Specifically, the driving distance of a transport vehicle and the fuel efficiency of the transport vehicle in the original data of the sewage treatment plant are extracted, and the carbon emission amount of the sludge treatment is determined based on the driving distance of the transport vehicle and the fuel efficiency of the transport vehicle.
Further, the carbon emission in sludge treatment is the carbon emission in the process from the outside of sludge transportation factory to the sludge treatment point, and mainly is the carbon emission G consumed by transportation tool fuel required by sludge transportation factory d _ sludge Carbon emission G from sludge treatment sludge The calculation formula of (a) is as follows:
G sludge ＝G d _ sludge
further, carbon emission G of transportation vehicle fuel consumption required for sludge transportation leaving factory d _ sludge (unit: kg CO) 2 eq/m 3 Kilogram carbon dioxide equivalent per cubic meter) as follows:
in the above formula, E d _ sludge Indicating fuel energy consumption, D i Indicating the total distance traveled by the ith vehicle per day (km/d, km/day), E i The fuel efficiency (km/L, km/liter) of the ith vehicle is shown, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 Cubic meter per day), 2.9 represents the emission factor of fuel carbon emission, i.e. carbon emission factor of fuel consumption, in kg CO 2 L (kg carbon dioxide/L).
According to the embodiment, the carbon emission quantitative evaluation of the whole life cycle and the whole flow of the sewage treatment facility construction and operation, the collection and treatment and the like is realized through the calculation of the carbon emission of the pipe network collection, the carbon emission of the sewage treatment and the carbon emission of the sludge treatment.
Preferably, as shown in fig. 4, the determining of the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the pipe network original data in step S1011 includes:
s10111, extracting the consumption amount of the pipe network construction material and the carbon content of the pipe network construction material in the original data of the pipe network, and determining the carbon emission amount of the pipe network construction based on the consumption amount of the pipe network construction material and the carbon content of the pipe network construction material.
Specifically, the carbon emission G of the pipe network construction pipe_construction Indirect carbon emission G of materials required mainly for pipe network construction mt_pipe_construction Carbon emission G for pipe network construction pipe_construction The calculation formula of (a) is as follows:
G pipe_construction ＝G mt_pipe_construction
further, the indirect carbon emission G of the materials required for the pipe network construction mt_pipe_construction The calculation formula of (a) is as follows:
in the above formula, EF i _ pipe_construction Indicates the carbon content (kg/kg), v, of the building material of the ith pipe network i _ pipe_construction Represents the volume (m) of the ith pipe network construction material 3 Cubic meter), ρ i _ pipe_construction Shows the density (kg/m) of the ith pipe network construction material 3 )，N i _ pipe_construction The life (a, year) of the ith pipe network construction material, and the design treatment capacity (m) of the sewage treatment plant (F) 3 A, cubic meter per year).
S10112, extracting the running time of the pipe network and the rated power of the electric equipment of the pipe network from the original data of the pipe network, and determining the indirect emission of the operation energy consumption of the pipe network based on the running time of the pipe network and the rated power of the electric equipment of the pipe network.
Specifically, the indirect emission G of the energy consumption of the pipe network operation L _ pipe_operation The calculation formula of (a) is as follows:
in the above formula, E L _ pipe_operation Indicating the electric energy consumption of the pipe network, E pi _ pipe_operation Indicates the unit power consumption (kWh/m) of the ith pipe network electric equipment 3 )，p i _ pipe_operation The rated power (kW), T of the ith pipe network electrical equipment i _ pipe_operation The operation time (h/d, hour/day) of the ith pipe network is shown, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d), 0.81 represents the emission factor of the energy consumption of electric energy in kg CO 2 The term,/kWh, refers to the indirect carbon emissions caused by electricity.
S10113, extracting the pipe network dissipation direct emission in the pipe network original data, and calculating the pipe network operation carbon emission based on the pipe network operation energy consumption indirect emission and the pipe network dissipation direct emission.
Specifically, the carbon emission G of the pipe network operation pipe_operation The calculation formula of (a) is as follows:
G pipe_operation ＝G L _ pipe_operation +G fugitive _ pipe_operation
in the above formula, G fugitive _ pipe_operation Indicating the direct discharge of the dissipated power of the pipe network.
Preferably, as shown in fig. 5, the determining of the carbon emission from the construction of the sewage treatment plant and the carbon emission from the operation of the sewage treatment plant based on the raw data of the sewage treatment plant in step S1013 includes:
s10131, extracting the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant from the original data of the sewage treatment plant, and determining the construction carbon emission of the sewage treatment plant based on the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant.
Specifically, the carbon emission in the construction of a sewage treatment plant, namely the carbon emission G in the construction process of the sewage treatment plant plant_construction Mainly for indirect carbon emission G of materials required for construction of sewage treatment plants mt _ plant_construction The expression is as follows:
G plant_construction ＝G mt _ plant_construction
further, indirect carbon emission G of materials required for construction of sewage treatment plants mt _ plant_construction (kg CO 2 eq/m 3 ) The calculation formula of (c) is as follows:
in the above formula, C amount Represents the consumption of construction materials, EF, of a sewage treatment plant i _ plant_construction Denotes the carbon content (kg/kg), v, of the construction material of the i-th sewage treatment plant i _ plant_construction Represents the volume (m) of the construction material of the i-th sewage treatment plant 3 )，ρ i _ plant_construction Shows the density (kg/m) of the construction material of the i-th sewage treatment plant 3 )，N i _ plant_construction The life (a) of the construction material of the i-th sewage treatment plant, and the design treatment capacity (m) of the sewage treatment plant (F) 3 /a)。
In addition, sewage treatment plant constructionMaterial energy consumption E mt _ plant_construction The calculation formula of (c) is as follows:
in the above formula, E mi _ plant_construction The specific energy consumption (kWh/kg) in the production process of the i-th construction material was shown.
S10132, extracting the operation time of the electric equipment of the sewage treatment plant, the rated power of the electric equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant from the original data of the sewage treatment plant, and determining the indirect emission of the operation energy consumption of the sewage treatment plant based on the operation time of the electric equipment of the sewage treatment plant, the rated power of the electric equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant.
Specifically, the indirect emission G of the operating energy consumption of the sewage treatment plant L_plant_operation (kg CO 2 eq/m 3 ) The calculation formula of (a) is as follows:
in the above formula, E L_plant_operation Indicating electric energy consumption, E pi_plant_operation Represents the unit electricity consumption (kWh/m) of the electrical equipment of the ith sewage treatment plant 3 )，p i Represents the rated power (kW), T of the electrical equipment of the ith sewage treatment plant i Represents the operating time (h/d, h/day) of the electrical equipment of the ith sewage treatment plant, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d), 0.81 represents the emission factor of the energy consumption of electric energy in kg CO 2 The term,/kWh, refers to the indirect carbon emissions caused by electricity.
S10133, extracting the carbon content and the consumption of the chemical agent in the original data of the sewage treatment plant, and determining the indirect discharge amount of the chemical agent consumption based on the carbon content of the chemical agent, the consumption of the chemical agent and the daily treatment capacity of the sewage treatment plant.
In particular, the chemical agent consumption indirect discharge G ch_plant_operation (kg CO 2 eq/m 3 ) The calculation formula of (a) is as follows:
in the above formula, C ch Represents the amount of chemical agent consumed, w i Represents the consumption (kg/d) of the ith chemical agent, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d)，EF i_plant_operation Represents the chemical carbon content (kg/kg) of the ith chemical.
Further, the chemical energy consumption is mainly the energy consumption of the chemical agent required by the operation of the sewage treatment facility (mainly a sewage treatment plant), and the energy consumption E of the chemical agent required by the operation of the sewage treatment facility ch_plant_operation The calculation formula of (a) is as follows:
in the above formula, E ci_plant_operation Represents the specific energy consumption (kWh/kg) of the i-th chemical agent.
S10134, extracting the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant from the original data of the sewage treatment plant, and calculating the carbon emission amount of the sewage treatment plant based on the indirect emission amount consumed by the operating energy of the sewage treatment plant, the indirect emission amount consumed by the chemical agent, the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant.
Wherein, the discharge amount of carbon G in operation of sewage treatment plant plant_operation The calculation formula of (a) is as follows:
G plant_operation ＝G L_plant_operation +G ch_plant_operation +G biogas_plant_operation +G fugitive_plant_operation
in the above formula, G biogas_plant_operation Indicating carbon emission reduction, G, of biogas combustion power generation fugitive_plant_operation Indicating the direct discharge amount dissipated by the sewage treatment plant.
The following describes a quantitative evaluation method for carbon emission of urban sewage treatment facilities by a specific example.
Taking a certain city as an example, the quantitative evaluation method for carbon emission of the urban sewage treatment facility mainly comprises the steps of S1 calculation preparation, S2 carbon emission of a sewage collection system, S3 carbon emission of a sewage treatment system, S4 carbon emission of a sludge treatment system, S5 carbon emission summary accounting and the like.
S1, calculation preparation, including S101 target research area division and S102 basic data collection and other 2 parts.
S101, dividing a target research area, namely dividing the target research area into a plurality of drainage areas and a plurality of sewage treatment systems according to three levels for facilitating carbon emission calculation, performing a carbon emission calculation step for forming 3 levels of the target research area (first level), the drainage areas (second level), the sewage treatment systems (third level) and the like, performing independent analysis and calculation on each sewage treatment system and each drainage area, summarizing results step by step, and finally obtaining carbon emission values of the three levels; a city of the target study area is divided into 12 drainage areas, of which 10 drainage areas are already put into use and 2 drainage areas are being constructed.
S102, collecting basic data, including 3 parts of data of an area A, data of a drainage area B, data of a sewage treatment system C and the like; the city has 41 sewage treatment plants and 105 pumping stations, wherein 37 sewage treatment plants are arranged in 10 used drainage areas, and the basic situation of the sewage treatment facility of a certain municipal drainage area is shown in the following table 3.
Table 3:
in the above table 3, ASP (activated sludge process) represents an activated sludge process, EA (extended aeration) represents extended aeration, MBR (membrane bioreactor) represents a membrane bioreactor, SBR (sequencing batch reactor) represents a sequencing batch reactor, ISBR (improved sequencing batch reactor) represents a modified sequencing batch reactor, FBR (fluidized bed reactor) represents a fluidized bed reactor, bioor (attached growth biological filtration) represents attached growth biofiltration, and OP (oxidation position) represents an oxidation tank.
As can be seen from table 3, 4 of the 2 drainage areas being constructed had sewage treatment plants being constructed; the sewage collecting pipe network is 7550 kilometers, comprising a 7200 kilometer underground pipe network and a 350 kilometer above-ground open channel, sewage flows to a sewage treatment plant in the open channel mainly through the action of gravity, and the sewage is discharged into a river after standard-reaching treatment by the sewage treatment plant. The daily domestic sewage amount in the city is about 25.73 hundred million liters (25.73 multiplied by 10) 6 m 3 ) The sewage treatment design capacity of the sewage treatment facility is about 22.85 multiplied by 10 6 m 3 The actual sewage treatment capacity is about 15.20 multiplied by 10 6 m 3 . The urban sewage collection rate is about 30%, and the sewage treatment rate is about 59%.
The operation data of the sewage treatment facility comprises basic data of a sewage treatment plant, water inlet and outlet concentration, pipe network data, electric energy consumption, sludge transportation fuel consumption, chemical agent consumption and the like.
The main treatment process of each sewage treatment plant is an Activated Sludge Process (ASP), the average pollution load per day is about 270t/d calculated by BOD, and in order to optimize the treatment capacity of the sewage treatment plant in the area, the sewage treatment plants can be jointly dispatched to treat the sewage in other areas.
The pipe diameter of the sewage collecting pipe network is 250mm (millimeter) to 2500mm reinforced concrete pipe, and the lengths of different types of pipes are shown in the following table 4.
Table 4:
| drainage area | Pipe diameter of pipe jacking (mm) | Pipe jacking length (Km) | Branch pipe diameter (mm) | Branch pipe length (km) |
| D1 | 1400 | 60.11 | 750 | 999 |
| D2 | 1900 | 55 | 900 | 1675 |
| D3 | 1200 | 30 | 900 | 1504 |
| D4 | 1400 | 8.5 | 900 | 870 |
| D5 | 1000 | 3 | 450 | 542 |
| D6 | 900 | 1 | 450 | 149 |
| D7 | 750 | 10.2 | 250 | 302 |
| D8 | 750 | 7 | 250 | 343 |
| D9 | 900 | 5 | 450 | 245 |
| D10 | 900 | 1 | 250 | 399 |
Collecting relevant index data of each electrical device of each sewage treatment facility in each drainage area, wherein the relevant index data comprises data of a sewage treatment plant and data of a pipe network pump station; electric energy consumption of wastewater treatment plants (E) L ) The data can be collected from the operation records of the sewage treatment plant and calculated, and the rated power (P) and the operation time (T) of the main electrical equipment of the sewage treatment plant are obtained through calculation) And the data such as the treatment capacity (Q) of the sewage treatment plant can be calculated to obtain the electric energy consumption of the sewage treatment plant, and the data values of the set running time (T) and the treatment capacity (Q) of the sewage treatment plant are average values in 6 months and above to obtain a relatively objective and scientific calculation result.
The chemical agent usage data of the sewage treatment plant can be acquired by collecting the operation records of the sewage treatment plant, and mainly comprises the types of different chemical agents and the usage amount (w) of various chemical agents i ) And (4) data.
Specific energy consumption in the production of different chemical agents (E) ci ) And carbon content (EF) in chemical agents i ) The densities, specific energy consumption and carbon content of the different materials are shown in table 5 below, which can be obtained by consulting the literature.
Table 5:
BOD indexes of inlet and outlet water of a pipe network and a sewage treatment plant are used for calculating the emission of dissipated carbon, the BOD degradation rate of each kilometer of the pipe network is 0.38mg/L, the carbon emission of an open channel is estimated according to an underground pipe network, and the emission data of the dissipated carbon of each drainage area is shown in the following table 6.
Table 6:
s4, carbon emission in sludge treatment, which is mainly carbon emission G in the process from sludge delivery outside a factory to a sludge treatment point sludge Carbon emission G mainly for the fuel consumption of transport means required by sludge transportation leaving factory d And collecting fuel consumption data of sludge transportation of each sewage treatment plant in each drainage area, wherein the fuel efficiency of an unloaded vehicle is 12km/L, and the fuel efficiency of a full-load vehicle is 4km/L. Energy consumption of sludge transportationEnergy consumption of fuel, mainly of transport vehicles (E) d ) The related fuel consumption such as fuel data can be collected from a vehicle use record or a driver, the fuel consumption is converted into equivalent electric energy consumption according to an oil-electricity conversion Coefficient (CF), the value of the oil-electricity conversion Coefficient (CF) is set to be 15.64kWh/L, and similarly, other fuel consumption in a sewage treatment plant can also be converted into electric energy consumption according to the oil-electricity conversion coefficient to calculate carbon emission; wherein, the sludge transportation fuel consumption data of the sewage treatment plant is shown in the following table 7.
Table 7:
according to the steps of the invention S1-S4, energy consumption and carbon emission of each part are calculated; through calculation, the total energy consumption of the target urban sewage treatment facility is about 450MWh/d, the standard deviation is about 21.17MWh/d, according to the division of life cycle stages, the energy consumption in the construction stage accounts for 30% of the total energy consumption, the energy consumption in the operation stage (electric energy, diesel oil and chemical agents) accounts for 70% of the total energy consumption, and 79% of the energy consumption in the operation stage is electric energy consumption, so that the electric energy consumption accounts for about 55% of the total energy consumption; the whole collection and treatment process is divided, the sewage collection energy consumption accounts for 45.3 percent of the total energy consumption, the sewage treatment accounts for 54.7 percent of the total energy consumption, in the energy consumption of the sewage treatment, the electric energy accounts for 65.5 percent, the fuel accounts for 6.7 percent, and the material accounts for 27.8 percent; wherein, the energy consumption of a certain municipal sewage treatment facility is shown in the following table 8.
Table 8:
the unit net energy consumption (total energy consumption minus energy of biogas power generation) of the target urban sewage treatment facility is about 0.26kWh/m 3 Standard deviation of 0.101kWh/m 3 The sewage collection energy consumption intensity is 0.09kWh/m 3 Standard deviation of 0.05kWh/m 3 Treatment of sewageThe energy consumption intensity is 0.19kWh/m 3 Standard deviation of 0.092kWh/m 3 (ii) a Wherein the unit energy consumption (unit: kWh/m) of the sewage treatment facility of each drainage area of the target city 3 ) As shown in table 9 below.
Table 9:
and S5, performing carbon emission summary accounting, wherein the carbon emission summary accounting comprises S501 sewage treatment system carbon emission accounting, S502 drainage area carbon emission accounting and S503 target research area carbon emission accounting.
S501 carbon emission accounting of sewage treatment system, which aims at a certain sewage treatment system S sewage Performing carbon emission accounting by adopting the carbon emission calculation method in different processes of S2 sewage collection system carbon emission, S3 sewage treatment system carbon emission, S4 sludge treatment system carbon emission and the like, and calculating to obtain the total carbon emission G of the sewage treatment system x sewage_x 。
S502, performing carbon emission accounting on a plurality of sewage treatment systems in the drainage area to obtain the total carbon emission G of the drainage area m through calculation drain_m 。
S503, carbon emission accounting is carried out on a plurality of water discharging areas in the target research area, and the total carbon emission G of the target research area is obtained through calculation urban 。
According to the calculated result, sewageThe average carbon emission of the treatment plant was about 1.046kg CO 2 -eq/m 3 . Carbon emissions from open channels in the grid were 0.38kg CO 2 -eq/m 3 The carbon emission of the underground pipe network is 0.56kg of CO 2 -eq/m 3 . Therefore, the average carbon emission of the whole sewage treatment facility was 1.426kg of CO 2 -eq/m 3 The carbon emissions of the municipal sewage treatment plant for different drainage areas are shown in table 10 below.
Table 10:
| drainage area | Process for collecting sewage | Process for treating sewage | Total up to | Carbon emission reduction for biogas power generation | Net carbon emissions |
| D1 | 0.6996 | 0.3689 | 1.0685 | 0.08 | 0.9885 |
| D2 | 0.9070 | 0.3958 | 1.3028 | 0.07 | 1.2328 |
| D3 | 0.7030 | 0.4428 | 1.1458 | 0 | 1.1458 |
| D4 | 0.7158 | 0.3120 | 1.0278 | 0.09 | 0.9378 |
| D5 | 0.6438 | 0.3185 | 0.9623 | 0 | 0.9623 |
| D6 | 0.6217 | 0.3639 | 0.9856 | 0 | 0.9856 |
| D7 | 0.8003 | 0.6233 | 1.4235 | 0 | 1.4235 |
| D8 | 0.5649 | 0.2881 | 0.8530 | 0 | 0.8530 |
| D9 | 0.4993 | 0.3502 | 0.8496 | 0 | 0.8496 |
| D10 | 0.5778 | 0.5068 | 1.0846 | 0 | 1.0846 |
Example 2
The embodiment provides a carbon emission quantitative evaluation device for town sewage treatment facilities, as shown in fig. 6, comprising:
and the acquisition module 61 is used for acquiring original data of a pipe network and original data of a sewage treatment plant, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant.
Specifically, a target research area is divided to generate a drainage area and a sewage treatment facility; wherein, above-mentioned drain zone includes a plurality of sewage treatment facilities, and sewage treatment facility includes sewage treatment plant and pipe network.
Specifically, the carbon emission of the town sewage treatment facility is divided into 2 types including direct emission and indirect emission, and the direct emission and the indirect emission can be consideredEnergy consumption of the program (kWh/m) 3 Kilowatt-hour/cubic meter) corresponding to greenhouse gas indirect emission (kg CO) 2 eq/m 3 Kilogram carbon dioxide equivalent/cubic meter), direct emission of greenhouse gases in the corresponding process, and corresponding carbon emission reduction; calculating the energy consumption of each item, calculating the corresponding carbon emission, namely adding the greenhouse gas emission of each process, converting the greenhouse gas emission into the carbon emission, and adding the carbon emission and the carbon emission together for calculation; wherein, the direct discharge is the greenhouse gas discharge directly generated by the sewage treatment facility, and comprises the greenhouse gas discharge in the sewage treatment process and the greenhouse gas discharge generated by the combustion of the marsh gas generated in the biochemical treatment process; the indirect emission is greenhouse gas emission corresponding to energy consumption in the related process of the sewage treatment facility, and is mainly carbon emission with energy consumption of sewage treatment facility construction materials, chemical agents required by operation and the like.
Furthermore, the indirect emission of greenhouse gases is mainly the emission of greenhouse gases corresponding to the energy consumption in different processes, and the energy sources mainly include 4 types of electric energy, fuel, construction materials, chemical agents and the like.
Further, the direct emission sources of greenhouse gases from different processes mainly include 1, namely the emission of dissipated carbon from sewage collection systems and sewage treatment systems; the emission of the dissipated carbon is indirectly estimated according to the degradation rate of the organic matters in the pipe network, and the specific estimation steps are as follows: firstly, selecting a pipe network, and determining adjacent pump stations at two ends of the pipe network; then, monitoring the BOD concentration value of each pump station, and setting that 5 parallel samples need to be continuously taken to eliminate errors; and finally, calculating the difference value (average value of sampling samples) of BOD concentration values between the two pump stations divided by the length of the pipe network, namely the BOD degradation rate of the pipe network per kilometer, wherein 50% of the degraded BOD is greenhouse gas emission, namely dissipated carbon emission.
Furthermore, the greenhouse gas carbon emission reduction source in different processes is mainly carbon emission generated by biogas combustion power generation generated by operating biochemical treatment in a sewage treatment plant, and no matter whether the biogas is directly used for power generation or not, the biogas contains certain carbon, so the greenhouse gas carbon emission reduction source is considered as a carbon emission item; the electric energy generated by the biogas power generation can be considered in the carbon emission reduction calculation range and used as a carbon emission reduction item.
And a first determination module 62, configured to determine a total carbon emission amount of the sewage treatment based on the carbon emission amount collected by the pipe network, the carbon emission amount of the sewage treatment, and the carbon emission amount of the sludge treatment.
Wherein, the formula for calculating the total carbon emission in the sewage treatment is as follows:
in the above formula, G sewage_x Represents the total carbon emission of the wastewater treatment (i-th wastewater treatment facility), G pipe_i Indicates that (i-th sewage treatment facility) pipe network collects carbon emission G plant_i Indicates the carbon emission of wastewater treatment (i-th wastewater treatment facility), G sludge_i Indicates the carbon emission of sludge treatment (i-th wastewater treatment facility), G pipe_construction_i Indicates (i-th sewage treatment facility) carbon emission amount of pipe network construction, G pipe_operation_i Indicates the carbon emission of the pipe network (i-th sewage treatment facility) operation, G plant_construction_i Indicates the carbon emission amount, G, of the construction of the wastewater treatment plant (i-th wastewater treatment facility) plant_operation_i Indicates (i-th sewage treatment facility) the carbon emission amount of operation of sewage treatment plant, G sludge_i Indicating the carbon emission from the sludge treatment (i-th sewage treatment facility).
And a second determining module 63 for determining the total carbon emission of the water discharging area based on the total carbon emission of the sewage treatment.
Wherein, carbon emission summary calculation is carried out on a plurality of sewage treatment settings in the drainage area, and the total carbon emission G of the drainage area m drain_m The calculation formula of (a) is as follows:
a third determination module 64 for determining a target study area carbon emission total based on the aforementioned drain carbon emission total.
WhereinPerforming carbon emission summary calculation on a plurality of water discharge areas in the target research area, wherein the total carbon emission G of the target research area urban The calculation formula of (a) is as follows:
and the evaluation module 65 is used for evaluating the carbon emission of the town sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
The carbon emission evaluation of the town sewage treatment facility is mainly carried out based on a mass balance and life cycle theoretical model, the carbon emission calculation is carried out based on greenhouse gas emission in the whole process of sewage collection, sewage treatment and sludge treatment, the carbon emission calculation comprises the sewage collection carbon emission, the sewage treatment carbon emission and the sludge treatment carbon emission, the total carbon emission amount of a drainage area and the total carbon emission amount of a target research area are further calculated, and the total carbon emission amount of the sewage treatment, the total carbon emission amount of the drainage area and the total carbon emission amount of the target research area are used as the evaluation result of the carbon emission of the town sewage treatment facility.
Above-mentioned town sewage treatment facility carbon discharges quantitative evaluation device, on the basis of traditional sewage treatment plant carbon emission, the quantitative evaluation to pipe network carbon discharge has been increased, the carbon discharge quantitative evaluation to sewage collection facilities such as pipe network has been realized, and collect the carbon discharge based on pipe network, sewage treatment carbon discharge and mud treatment carbon discharge confirm sewage treatment carbon discharge total amount, and then calculate sewage treatment carbon discharge total amount, the regional carbon discharge total amount of drainage and the regional carbon discharge total amount of target research, sewage treatment system from sewage treatment facilities such as single sewage treatment plant, sewage collection and processing facilities such as sewage treatment plant and pipe network, the sewage treatment system that a plurality of sewage treatment facilities constitute, to the simultaneous quantitative evaluation of regional sewage treatment system's multilayer face carbon discharge, and then realized the quantitative evaluation to town sewage treatment facility carbon discharge.
Preferably, the acquisition module 61 includes:
the first determining sub-module 611 is configured to determine the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the pipe network original data.
The first calculation submodule 612 is configured to calculate the carbon emission collected by the pipe network according to the carbon emission for pipe network construction and the carbon emission for pipe network operation.
Wherein the pipe network collects carbon emission G pipe The calculation formula of (c) is as follows:
G pipe ＝G pipe_construction +G pipe_operation
in the above formula, G pipe_construction Indicates the carbon emission of pipe network construction, G pipe_operation And the carbon emission of the pipe network operation is shown.
A second determining submodule 613, configured to determine the carbon emission from the construction of the sewage treatment plant and the carbon emission from the operation of the sewage treatment plant based on the raw data of the sewage treatment plant.
A second calculating submodule 614 for calculating the carbon emission amount of the sewage treatment according to the carbon emission amount of the construction of the sewage treatment plant and the carbon emission amount of the operation of the sewage treatment plant.
Wherein, the carbon emission G of sewage treatment plant The calculation formula of (a) is as follows:
G plant ＝G plant_construction +G plant_operation
in the above formula, G plant_construction Indicates the carbon emission of construction of a sewage treatment plant, G plant_operation Representing the carbon emission of the operation of the sewage treatment plant.
And a third determining submodule 615, configured to determine a carbon emission amount consumed by the fuel of the sludge transportation means based on the raw data of the sewage treatment plant, and use the carbon emission amount consumed by the fuel of the sludge transportation means as the carbon emission amount of the sludge treatment.
Specifically, the driving distance of a transport vehicle and the fuel efficiency of the transport vehicle in the original data of the sewage treatment plant are extracted, and the carbon emission amount of the sludge treatment is determined based on the driving distance of the transport vehicle and the fuel efficiency of the transport vehicle.
Further, the carbon emission in sludge treatment is the carbon emission in the process from the outside of sludge transportation factory to the sludge treatment point, and mainly is the carbon emission G consumed by transportation tool fuel required by sludge transportation factory d _ sludge Carbon emission G from sludge treatment sludge The calculation formula of (a) is as follows:
G sludge ＝G d _ sludge
further, carbon emission G of transportation vehicle fuel consumption required for sludge transportation leaving factory d _ sludge (unit: kg)
CO 2 eq/m 3 Kilogram carbon dioxide equivalent/cubic meter) as follows:
in the above formula, E d _ sludge Indicating fuel energy consumption, D i Indicating the total distance traveled by the ith vehicle per day (km/d, km/day), E i The fuel efficiency (km/L, km/liter) of the ith vehicle is shown, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 Cubic meter per day), 2.9 represents the emission factor of fuel carbon emission, i.e. carbon emission factor of fuel consumption, in kg CO 2 L (kg carbon dioxide/L).
Preferably, the first determining sub-module 611 includes:
the first determining unit 6111 is configured to extract the pipe network construction material consumption and the pipe network construction material carbon content in the pipe network original data, and determine the pipe network construction carbon emission based on the pipe network construction material consumption and the pipe network construction material carbon content.
Specifically, the carbon emission G of the pipe network construction pipe_construction Indirect carbon emission G of materials required mainly for pipe network construction mt_pipe_construction Carbon emission G for pipe network construction pipe_construction The calculation formula of (a) is as follows:
G pipe_construction ＝G mt_pipe_construction
further, indirect carbon emission G of materials required for pipe network construction mt_pipe_construction The calculation formula of (a) is as follows:
in the above formula, EF i _ pipe_construction Indicates the carbon content (kg/kg), v, of the i-th pipe network construction material i _ pipe_construction Represents the volume (m) of the ith pipe network construction material 3 Cubic meter), ρ i _ pipe_construction Shows the density (kg/m) of the ith pipe network construction material 3 )，N i _ pipe_construction The life (a, year) of the ith pipe network construction material, and the design treatment capacity (m) of the sewage treatment plant (F) 3 A, cubic meter per year).
The second determining unit 6112 is configured to extract the pipe network operation time and the rated power of the pipe network electrical device in the pipe network original data, and determine the indirect emission of the pipe network operation energy consumption based on the pipe network operation time and the rated power of the pipe network electrical device.
Specifically, the indirect emission G of the energy consumption of the pipe network operation L _ pipe_operation The calculation formula of (a) is as follows:
in the above formula, E L _ pipe_operation Indicating the electric energy consumption of the pipe network, E pi _ pipe_operation Indicates the unit power consumption (kWh/m) of the ith pipe network electric equipment 3 )，p i _ pipe_operation The rated power (kW), T of the ith pipe network electrical equipment i _ pipe_operation The operation time (h/d, hour/day) of the ith pipe network is shown, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d), 0.81 represents the emission factor of the energy consumption of electric energy in kg CO 2 kWh, power consumptionResulting in indirect carbon emissions.
A third determining unit 6113, configured to extract the pipe network dissipated direct emission amount from the pipe network original data, and calculate the pipe network operating carbon emission amount based on the pipe network operating energy consumption indirect emission amount and the pipe network dissipated direct emission amount.
Specifically, the carbon emission G of the pipe network operation pipe_operation The calculation formula of (a) is as follows:
G pipe_operation ＝G L _ pipe_operation +G fugitive _ pipe_operation
in the above formula, G fugitive _ pipe_operation Indicating the direct discharge amount of the dissipated pipe network.
Preferably, the second determining submodule 613 includes:
a fourth determining unit 6131, configured to extract the wastewater treatment plant construction material consumption amount and the wastewater treatment plant construction material carbon content in the raw data of the wastewater treatment plant, and determine the wastewater treatment plant construction carbon emission amount based on the wastewater treatment plant construction material consumption amount and the wastewater treatment plant construction material carbon content.
Specifically, the carbon emission in the construction of a sewage treatment plant, namely the carbon emission G in the construction process of the sewage treatment plant plant_construction Mainly for indirect carbon emission G of materials required for construction of sewage treatment plants mt _ plant_construction The expression is as follows:
G plant_construction ＝G mt _ plant_construction
further, indirect carbon emission G of materials required for construction of sewage treatment plants mt _ plant_construction (kg CO 2 eq/m 3 ) The calculation formula of (a) is as follows:
in the above formula, C amount Representing the consumption of construction materials, EF, of a sewage treatment plant i _ plant_construction Represents the carbon content (kg/kg), v, of the construction material of the i-th sewage treatment plant i _ plant_construction Represents the volume (m) of the construction material of the i-th sewage treatment plant 3 )，ρ i _ plant_construction Shows the density (kg/m) of the construction material of the i-th sewage treatment plant 3 )，N i _ plant_construction The life (a) of the construction material of the i-th sewage treatment plant, and the design treatment capacity (m) of the sewage treatment plant (F) 3 /a)。
In addition, the energy consumption of construction materials of sewage treatment plants E mt _ plant_construction The calculation formula of (a) is as follows:
in the above formula, E mi _ plant_construction The specific energy consumption (kWh/kg) in the production process of the i-th construction material was shown.
A fifth determining unit 6132, configured to extract the operating time of the electrical device of the sewage treatment plant, the rated power of the electrical device of the sewage treatment plant, and the daily treatment capacity of the sewage treatment plant from the raw data of the sewage treatment plant, and determine the indirect emission of the operating energy consumption of the sewage treatment plant based on the operating time of the electrical device of the sewage treatment plant, the rated power of the electrical device of the sewage treatment plant, and the daily treatment capacity of the sewage treatment plant.
Specifically, the indirect emission G of the operating energy consumption of the sewage treatment plant L_plant_operation (kg CO 2 eq/m 3 ) The calculation formula of (a) is as follows:
in the above formula, E L_plant_operation Representing the consumption of electric energy, E pi_plant_operation Represents the unit electricity consumption (kWh/m) of the electrical equipment of the ith sewage treatment plant 3 )，p i Representing electrical equipment of the i-th sewage treatment plantRated power (kW), T i Represents the operating time (h/d, h/day) of the electrical equipment of the ith sewage treatment plant, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d), 0.81 represents the emission factor of the energy consumption of electric energy in kg CO 2 kWh, refers to indirect carbon emissions from electricity usage.
A sixth determining unit 6133, configured to extract the carbon content of the chemical agent and the consumption amount of the chemical agent from the raw data of the sewage treatment plant, and determine indirect discharge amount of the chemical agent consumption based on the carbon content of the chemical agent, the consumption amount of the chemical agent, and the daily treatment amount of the sewage treatment plant.
In particular, the chemical agent consumption indirect discharge G ch_plant_operation (kg CO 2 eq/m 3 ) The calculation formula of (a) is as follows:
in the above formula, C ch Represents the amount of chemical agent consumed, w i Represents the consumption (kg/d) of the ith chemical agent, and Q represents the daily treatment capacity (m) of the sewage treatment plant 3 /d)，EF i_plant_operation Represents the chemical carbon content (kg/kg) of the ith chemical.
Further, the chemical energy consumption is mainly the energy consumption of the chemical agent required by the operation of the sewage treatment facility (mainly a sewage treatment plant), and the energy consumption E of the chemical agent required by the operation of the sewage treatment facility ch_plant_operation The calculation formula of (a) is as follows:
in the above formula, E ci_plant_operation Represents the specific energy consumption (kWh/kg) of the i-th chemical agent.
A seventh determining unit 6134, configured to extract carbon emission reduction amount of biogas combustion power generation and direct emission amount of dissipation of the sewage treatment plant from the raw data of the sewage treatment plant, and calculate the carbon emission amount of operation of the sewage treatment plant based on the indirect emission amount of operation energy consumption of the sewage treatment plant, the indirect emission amount of chemical agent consumption, the carbon emission reduction amount of biogas combustion power generation and the direct emission amount of dissipation of the sewage treatment plant.
Wherein, the discharge amount of carbon G in operation of sewage treatment plant plant_operation The calculation formula of (a) is as follows:
G plant_operation ＝G L_plant_operation +G ch_plant_operation +G biogas_plant_operation +G fugitive_plant_operation
in the above formula, G biogas_plant_operation Indicating carbon emission reduction, G, of biogas combustion power generation fugitive_plant_operation Indicating the direct discharge amount dissipated by the sewage treatment plant.
Example 3
The embodiment provides computer equipment which comprises a memory and a processor, wherein the processor is used for reading instructions stored in the memory to execute the quantitative evaluation method for carbon emission of the town sewage treatment facility in any method embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Example 4
The embodiment provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions can execute a quantitative evaluation method for carbon emission of a town sewage treatment facility in any method embodiment. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A quantitative evaluation method for carbon emission of urban sewage treatment facilities is characterized by comprising the following steps:
acquiring original data of a pipe network and original data of a sewage treatment plant, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant;
determining the total carbon emission amount of sewage treatment based on the carbon emission amount collected by the pipe network, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment;
determining a total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment;
determining a target study area total carbon emission amount based on the drainage area total carbon emission amount;
and evaluating the carbon emission of the town sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
2. The quantitative evaluation method for carbon emission of urban sewage treatment facilities according to claim 1, wherein the steps of determining the carbon emission for collecting the pipe network based on the raw data of the pipe network and determining the carbon emission for treating the sewage and the carbon emission for treating the sludge based on the raw data of the sewage treatment plant comprise:
determining the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the original data of the pipe network;
calculating the carbon emission collected by the pipe network according to the carbon emission for pipe network construction and the carbon emission for pipe network operation;
determining the construction carbon emission of the sewage treatment plant and the operation carbon emission of the sewage treatment plant based on the original data of the sewage treatment plant;
calculating the carbon emission amount of the sewage treatment according to the construction carbon emission amount of the sewage treatment plant and the operation carbon emission amount of the sewage treatment plant;
determining the carbon emission amount consumed by the fuel of the sludge transport means based on the raw data of the sewage treatment plant, and taking the carbon emission amount consumed by the fuel of the sludge transport means as the carbon emission amount of the sludge treatment.
3. The method for quantitatively evaluating the carbon emission of the urban sewage treatment facility according to claim 2, wherein the determining of the carbon emission for pipe network construction and the carbon emission for pipe network operation based on the pipe network raw data comprises:
extracting the consumption of pipe network construction materials and the carbon content of the pipe network construction materials in the original data of the pipe network, and determining the carbon emission of the pipe network construction based on the consumption of the pipe network construction materials and the carbon content of the pipe network construction materials;
extracting the running time of the pipe network and the rated power of the electric equipment of the pipe network in the original data of the pipe network, and determining the indirect emission of the operation energy consumption of the pipe network based on the running time of the pipe network and the rated power of the electric equipment of the pipe network;
extracting the pipe network dissipation direct emission in the pipe network original data, and calculating the pipe network operation carbon emission based on the pipe network operation energy consumption indirect emission and the pipe network dissipation direct emission.
4. The quantitative evaluation method for carbon emission of urban sewage treatment facilities according to claim 2, wherein the determination of the carbon emission from construction of sewage treatment plants and the carbon emission from operation of sewage treatment plants based on the raw data of sewage treatment plants comprises:
extracting the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant in the original data of the sewage treatment plant, and determining the construction carbon emission of the sewage treatment plant based on the construction material consumption of the sewage treatment plant and the carbon content of the construction material of the sewage treatment plant;
extracting the operating time of the electrical equipment of the sewage treatment plant, the rated power of the electrical equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant in the original data of the sewage treatment plant, and determining the indirect emission of the operating energy consumption of the sewage treatment plant based on the operating time of the electrical equipment of the sewage treatment plant, the rated power of the electrical equipment of the sewage treatment plant and the daily treatment capacity of the sewage treatment plant;
extracting the carbon content and the consumption of chemical agents in the original data of the sewage treatment plant, and determining the indirect discharge amount of the consumption of the chemical agents based on the carbon content of the chemical agents, the consumption of the chemical agents and the daily treatment capacity of the sewage treatment plant;
extracting the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant from the original data of the sewage treatment plant, and calculating the carbon emission amount of the sewage treatment plant based on the indirect emission amount consumed by the operating energy of the sewage treatment plant, the indirect emission amount consumed by the chemical agent, the carbon emission reduction amount of biogas combustion power generation and the direct emission amount dissipated by the sewage treatment plant.
5. The quantitative evaluation method for carbon emission of urban sewage treatment facilities according to claim 2, wherein the determining of the carbon emission consumed by the sludge transportation means based on the raw data of the sewage treatment plant and the using of the carbon emission consumed by the sludge transportation means as the carbon emission of the sludge treatment comprises:
and extracting the driving distance of the transport vehicle and the fuel efficiency of the transport vehicle in the original data of the sewage treatment plant, and determining the carbon emission amount of the sludge treatment based on the driving distance of the transport vehicle and the fuel efficiency of the transport vehicle.
6. The method for quantitatively evaluating carbon emission of urban sewage treatment facilities according to claim 1, wherein the total carbon emission for sewage treatment is determined based on the carbon emission collected by the pipe network, the carbon emission for sewage treatment and the carbon emission for sludge treatment, and the total carbon emission for sewage treatment is calculated by the following formula:
in the above formula, G sewage_x Represents the total carbon emission of sewage treatment, G pipe_i Indicates that the pipe network collects carbon emission G plant_i Indicates the carbon emission of wastewater treatment, G sludge_i Indicating the carbon emission from sludge treatment.
7. The method for quantitatively evaluating carbon emissions from town sewage treatment facilities according to claim 1, wherein before collecting raw data of pipe network and raw data of sewage treatment plant, determining carbon emissions collected by pipe network based on the raw data of pipe network, and determining carbon emissions of sewage treatment and carbon emissions of sludge treatment based on the raw data of sewage treatment plant, the method further comprises:
dividing a target research area to generate a drainage area and a sewage treatment facility; wherein, the drainage zone comprises a plurality of sewage treatment facilities, and the sewage treatment facility comprises a sewage treatment plant and a pipe network.
8. The utility model provides a town sewage treatment facility carbon emission quantitative evaluation device which characterized in that includes:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring original data of a pipe network and original data of a sewage treatment plant, determining the carbon emission amount collected by the pipe network based on the original data of the pipe network, and determining the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment based on the original data of the sewage treatment plant;
the first determination module is used for determining the total carbon emission amount of sewage treatment based on the carbon emission amount collected by the pipe network, the carbon emission amount of sewage treatment and the carbon emission amount of sludge treatment;
the second determination module is used for determining the total carbon emission amount of the drainage area based on the total carbon emission amount of the sewage treatment;
a third determination module for determining a target study area carbon emission total based on the water discharge area carbon emission total;
and the evaluation module is used for evaluating the carbon emission of the urban sewage treatment facility based on the total carbon emission of the sewage treatment, the total carbon emission of the drainage area and the total carbon emission of the target research area.
9. A computer device comprising a processor and a memory, wherein the memory is configured to store a computer program and the processor is configured to invoke the computer program to perform the steps of the method of any of claims 1-7.
10. A computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, carry out the steps of the method according to any one of claims 1-7.
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