Method, device and equipment for tracing water source of drainage network based on hydrogen and oxygen isotopes

Abstract

The present application provides a method, device and equipment for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes, which is applied to the field of water environment protection technology. The method obtains water sampling data of the water body discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters; according to the first hydrogen and oxygen isotope parameters of multiple water bodies outside the network, a fingerprint map of each water body outside the network is constructed; based on the fingerprint maps of multiple water bodies outside the network, a tracing map of the water body in the network is determined; based on the second hydrogen and oxygen isotope parameters of the water body in the network, the tracing result of the water body in the network is determined from the tracing map, thereby improving the efficiency and accuracy of tracing the source of water in the drainage network.

Description

Technical Field

[0001] The present application belongs to the field of water environment protection technology, and in particular relates to a method, device and equipment for tracing the source of water from a drainage network based on hydrogen and oxygen isotopes. Background Art

[0002] my country's urban water environment governance is at a critical stage. Drainage network problems such as mixing, misconnection, and inflow and infiltration have seriously hindered sewage treatment efficiency and water quality improvement. Improper connection between rainwater and sewage networks leads to sewage overflow, while damaged networks allow clean water to enter the sewage system. These factors not only dilute the BOD concentration in sewage, increase the risk of nitrogen and phosphorus emissions, but may also cause sewage overflow. Therefore, it is urgent to identify and rectify the mixing, misconnection, and inflow and infiltration problems of the drainage network to improve governance efficiency.

[0003] In the existing technology, the problems of mixed and misconnected drainage pipes and inflow infiltration are mainly checked through geophysical detection technology, three-dimensional fluorescence spectroscopy tracing technology, and water quality characteristic factor diagnosis method. Geophysical detection technology places a crawler equipped with a camera into the pipeline, and transmits real-time video images of the inside of the pipeline to check whether the pipeline has cracks, blockages, corrosion, or misconnections. Three-dimensional fluorescence spectroscopy tracing technology can identify and distinguish water bodies from different sources by measuring the fluorescence intensity of fluorescent substances at different excitation and emission wavelengths. The water quality characteristic factor diagnosis method identifies water bodies from different sources by detecting the concentration of characteristic factors in the water.

[0004] However, the application of geophysical detection technology is complicated, resulting in high cost and low efficiency for comprehensive pipeline detection; water quality characteristic factors and three-dimensional fluorescence spectroscopy technology have high extraction costs due to the small amount of substances in the water, and the concentration and fingerprint characteristics of the substances are easily shaped by biogeochemical effects in the pipeline, which seriously affects the efficiency of the method and the accuracy of the results. Summary of the invention

[0005] The present application provides a method, device and equipment for tracing the source of water coming into a drainage network based on hydrogen and oxygen isotopes, so as to solve the defects of low efficiency and poor accuracy in tracing the source of water coming into a drainage network in the prior art.

[0006] In a first aspect, the present application provides a method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes, the method comprising:

[0007] Acquire water sampling data of water in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters;

[0008] Constructing a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network;

[0009] Determine the source map of the water body in the pipe network based on the fingerprint maps of multiple water bodies outside the pipe network;

[0010] Based on the second hydrogen and oxygen isotope parameters of the water body in the pipe network, the tracing result of the water body in the pipe network is determined from the tracing map.

[0011] Optionally, the number of the first hydrogen and oxygen isotope parameters of each water body outside the pipe network is multiple groups, and constructing the fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network includes:

[0012] For any one of the multiple water bodies outside the pipeline network, calibrate multiple groups of first hydrogen and oxygen isotope parameters of the water body outside the pipeline network, and determine the average values ​​of the multiple groups of first hydrogen and oxygen isotope parameters, where the average values ​​include: hydrogen isotope average value and oxygen isotope average value;

[0013] A fingerprint map of the water body outside the pipeline network is constructed based on the multiple groups of first hydrogen and oxygen isotope parameters and the average value.

[0014] Optionally, the correction processing of the multiple groups of first hydrogen and oxygen isotope parameters of the water body outside the pipe network includes:

[0015] Obtain standard values ​​and measured values ​​of hydrogen and oxygen isotopes in multiple standard water bodies;

[0016] Constructing a fitting equation according to the standard values ​​and measured values ​​of the hydrogen and oxygen isotopes of the plurality of standard water bodies, and determining a fitting coefficient of the fitting equation;

[0017] When the fitting coefficient meets the threshold value, the multiple groups of first hydrogen and oxygen isotope parameters are input into the fitting equation for correction to obtain multiple groups of corrected first hydrogen and oxygen isotope parameters.

[0018] Optionally, constructing a fingerprint of the water body outside the pipe network according to the multiple groups of first hydrogen and oxygen isotope parameters and the average value includes:

[0019] Determine the standard deviation of the plurality of first hydrogen and oxygen isotope parameters according to the plurality of first hydrogen and oxygen isotope parameters and the average value, wherein the standard value includes: a hydrogen isotope standard deviation and an oxygen isotope standard deviation;

[0020] A two-dimensional coordinate system is constructed with hydrogen isotopes as the horizontal coordinate and oxygen isotopes as the vertical coordinate, and the coordinate point of the water body outside the pipe network in the two-dimensional coordinate system is determined according to the average value;

[0021] Based on the coordinate point and the standard deviation, a first rectangular area corresponding to the water body outside the pipeline network is determined in the two-dimensional coordinate system, and the first rectangular area is used as the fingerprint spectrum of the water body outside the pipeline network, the center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

[0022] Optionally, the determining of the source traceability map of the water body in the pipe network based on the fingerprint maps of the water bodies outside the pipe network includes:

[0023] For any two fingerprints of the plurality of fingerprints of the water bodies outside the pipe network, based on the two fingerprints, a corresponding second rectangular area is determined, where the second rectangular area is a minimum rectangular area including the two fingerprints;

[0024] A source tracing map of the water body in the pipe network is determined according to the multiple first rectangular areas and the multiple second rectangular areas.

[0025] Optionally, determining the tracing result of the water body in the pipe network from the tracing map based on the second hydrogen and oxygen isotope parameter of the water body in the pipe network includes:

[0026] Determining coordinate points of the water body in the pipe network on the two-dimensional coordinate system according to the second hydrogen and oxygen isotope parameters of the water body in the pipe network;

[0027] Based on the coordinate point and the traceability map, determining a target rectangular area where the coordinate point is located in the traceability map;

[0028] Based on the target rectangular area, a tracing result of the water body in the pipe network is determined, and the tracing result is used to indicate at least one type of water body outside the pipe network included in the water body in the pipe network.

[0029] Optionally, the step of obtaining water sampling data of a plurality of water bodies outside the drainage network includes:

[0030] Based on the spatial position of the drainage pipe network, determining a plurality of water body types outside the pipe network corresponding to the drainage pipe network;

[0031] The off-pipeline water body samples corresponding to the multiple off-pipeline water body types are obtained, and the corresponding water body sampling data are determined, wherein different off-pipeline water body types correspond to different sampling standards.

[0032] In a second aspect, the present application provides a drainage network water source tracing device based on hydrogen and oxygen isotopes, the device comprising:

[0033] An acquisition module is used to acquire water sampling data of the water body in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters;

[0034] A processing module, used for constructing a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the plurality of water bodies outside the pipe network;

[0035] A determination module, used to determine the source map of the water body in the pipe network based on the fingerprint maps of multiple water bodies outside the pipe network;

[0036] The determination module is also used to determine the tracing result of the water body in the pipe network from the tracing map based on the second hydrogen and oxygen isotope parameters of the water body in the pipe network.

[0037] Optionally, the processing module is further used to perform correction processing on multiple groups of first hydrogen and oxygen isotope parameters of any one of the multiple water bodies outside the pipe network;

[0038] The determination module is further used to determine the average values ​​of the plurality of groups of first hydrogen and oxygen isotope parameters, wherein the average values ​​include: the average value of hydrogen isotopes and the average value of oxygen isotopes;

[0039] The processing module is also used to construct a fingerprint map of the water body outside the pipeline network based on the multiple groups of first hydrogen and oxygen isotope parameters and the average value.

[0040] Optionally, the acquisition module is also used to obtain standard values ​​and measured values ​​of hydrogen and oxygen isotopes of multiple standard water bodies;

[0041] The processing module is further used to construct a fitting equation according to the standard values ​​and measured values ​​of the hydrogen and oxygen isotopes of the plurality of standard water bodies;

[0042] The determination module is further used to determine the fitting coefficient of the fitting equation;

[0043] The processing module is also used to input the multiple groups of first hydrogen and oxygen isotope parameters into the fitting equation for correction when the fitting coefficient meets the threshold, so as to obtain multiple groups of first hydrogen and oxygen isotope parameters after correction.

[0044] Optionally, the determination module is further used to determine the standard deviation of the multiple groups of first hydrogen and oxygen isotope parameters according to the multiple groups of first hydrogen and oxygen isotope parameters and the average value, and the standard value includes: a hydrogen isotope standard deviation and an oxygen isotope standard deviation;

[0045] The processing module is further used to construct a two-dimensional coordinate system with hydrogen isotopes as horizontal coordinates and oxygen isotopes as vertical coordinates;

[0046] The determination module is further used to determine the coordinate point of the water body outside the pipe network in the two-dimensional coordinate system according to the average value;

[0047] The determination module is also used to determine, in the two-dimensional coordinate system, a first rectangular area corresponding to the water body outside the pipeline network based on the coordinate point and the standard deviation, and use the first rectangular area as the fingerprint map of the water body outside the pipeline network, the center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

[0048] Optionally, the determination module is further configured to determine, for any two fingerprints among the multiple fingerprints of the water bodies outside the pipe network, a corresponding second rectangular area based on the two fingerprints, where the second rectangular area is a minimum rectangular area containing the two fingerprints;

[0049] The determination module is further used to determine a source map of the water body in the pipe network based on the multiple first rectangular areas and the multiple second rectangular areas.

[0050] Optionally, the determination module is further used to determine the coordinate point of the water body in the pipe network on the two-dimensional coordinate system according to the second hydrogen and oxygen isotope parameter of the water body in the pipe network;

[0051] The determination module is further used to determine, based on the coordinate point and the traceability map, a target rectangular area where the coordinate point is located in the traceability map;

[0052] The determination module is further used to determine a tracing result of the water body in the pipe network based on the target rectangular area, and the tracing result is used to indicate at least one type of water body outside the pipe network included in the water body in the pipe network.

[0053] Optionally, the determination module is further used to determine a plurality of water body types outside the drainage network corresponding to the drainage network based on the spatial position of the drainage network;

[0054] The acquisition module is further used to acquire the water body samples outside the pipe network corresponding to the multiple water body types outside the pipe network;

[0055] The determination module is also used to determine corresponding water body sampling data, wherein different types of water bodies outside the pipe network correspond to different sampling standards.

[0056] In a third aspect, the present application provides a drainage network water source tracing device based on hydrogen and oxygen isotopes, comprising:

[0057] Memory;

[0058] processor;

[0059] Wherein, the memory stores computer-executable instructions;

[0060] The processor executes the computer-executable instructions stored in the memory to implement the method for tracing the source of water in the drainage network based on hydrogen and oxygen isotopes as described in the above-mentioned first aspect and various possible implementation methods of the first aspect.

[0061] In a fourth aspect, the present application provides a computer storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes as described in the first aspect and various possible implementation methods of the first aspect.

[0062] The present application provides a method, device and equipment for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes. The method obtains water sampling data of the water body in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters; constructing a fingerprint map of each water body outside the drainage network according to the first hydrogen and oxygen isotope parameters of multiple water bodies outside the drainage network; determining the tracing map of the water body in the drainage network based on the fingerprint maps of multiple water bodies outside the drainage network; determining the tracing result of the water body in the drainage network from the tracing map based on the second hydrogen and oxygen isotope parameters of the water body in the drainage network, thereby improving the efficiency and accuracy of tracing the source of water in the drainage network. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0064] Figure 1 Schematic diagram of the process of tracing the source of water in the drainage network based on hydrogen and oxygen isotopes provided in this application Figure 1 ;

[0065] Figure 2 The fingerprint provided for this application is shown in FIG. Figure 1 ;

[0066] Figure 3 The fingerprint provided for this application is shown in FIG. Figure 2 ;

[0067] Figure 4 Schematic diagram of the process of tracing the source of water in the drainage network based on hydrogen and oxygen isotopes provided in this application Figure 2 ;

[0068] Figure 5 Schematic diagram of the traceability provided for this application Figure 1 ;

[0069] Figure 6 Schematic diagram of the traceability provided for this application Figure 2 ;

[0070] Figure 7 Schematic diagram of the traceability provided for this application Figure 3 ;

[0071] Figure 8 Schematic diagram of the process of tracing the source of water in the drainage network based on hydrogen and oxygen isotopes provided in this application Figure 3 ;

[0072] Fig. 9 A schematic diagram of the structure of the drainage network water source tracing device based on hydrogen and oxygen isotopes provided in this application;

[0073] Fig.10 A schematic diagram of the structure of the drainage network water source tracing equipment based on hydrogen and oxygen isotopes provided in this application.

[0074] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0076] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein.

[0077] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0078] my country's urban water environment governance faces severe challenges. Illegal discharge and overflow pollution in drainage pipe networks have become obstacles to improving sewage treatment efficiency and water quality. The mixing of rainwater and sewage pipe networks and the damage of pipe networks cause sewage to be discharged directly into water bodies, while clean water mistakenly enters sewage pipes. These phenomena not only increase the risk of nitrogen and phosphorus pollutants, but may also cause sewage overflow incidents. In view of this, it is crucial to trace the source of water from the drainage network, identify the mixing, misconnection and leakage problems of the drainage network, and take effective remediation measures to improve the effectiveness of water environment governance.

[0079] Among the existing drainage network detection technologies, geophysical detection and three-dimensional fluorescence spectroscopy numerical diagnosis methods are often used. Geophysical detection technology usually involves the use of pipeline closed-circuit television, that is, sending a robot equipped with a camera into the pipeline to obtain and analyze the video inside the pipeline in real time to identify defects such as cracks, blockages, corrosion or misconnections. The three-dimensional fluorescence spectroscopy numerical diagnosis technology focuses on distinguishing and identifying water bodies from different sources by analyzing the luminescence characteristics of fluorescent substances at different wavelengths. This method can reveal the composition of specific organic matter in water samples, thereby helping to diagnose mixed, misconnected and leaking problems in drainage networks.

[0080] However, although geophysical detection technology plays an important role in the inspection of drainage pipe networks, the complexity of its operation process makes comprehensive inspection expensive and inefficient. In addition, the three-dimensional fluorescence spectrum digital diagnosis technology has a high extraction cost of fluorescent substances, and its concentration and characteristics are easily affected by biogeochemical processes in drainage pipes, which leads to reduced diagnostic specificity and stability, thus affecting the efficiency and accuracy of diagnostic results. Therefore, these technologies need further optimization and improvement in practical applications.

[0081] In response to the above problems, the present application proposes a method for tracing the source of water coming into a drainage network based on hydrogen and oxygen isotopes. The method constructs a fingerprint map of each water body by utilizing the isotope data of water bodies outside the network; analyzes the fingerprint maps of multiple water bodies outside the network to determine the tracing map of water bodies within the network; and determines the source of water bodies in the drainage network in the tracing map in combination with the isotope parameters of water bodies within the network, thereby improving the efficiency and accuracy of tracing the source of water coming into the drainage network.

[0082] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0083] Figure 1 A schematic diagram of a method for tracing the source of water from a drainage network based on hydrogen and oxygen isotopes provided for an application example Figure 1 .like Figure 1As shown, the method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes provided in this embodiment includes:

[0084] S101. Acquire water sampling data of water bodies in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters.

[0085] Among them, water samples from the drainage network are collected at the outlet of the drainage network, and multiple water samples from outside the drainage network that may affect the network are collected at the same time. The collected water samples are subjected to necessary pretreatment, such as filtration and sterilization, to eliminate impurities that may affect isotope determination. High-precision isotope analysis instruments are used to determine the hydrogen and oxygen isotope parameters in the water samples.

[0086] By effectively obtaining the hydrogen and oxygen isotope parameters of water bodies inside and outside the drainage network, a scientific and accurate method is provided for the tracing of the drainage network, identification of pollution sources and treatment, thereby improving the efficiency and effectiveness of water environment treatment.

[0087] S102. Construct a fingerprint map of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network.

[0088] Wherein, water samples are collected from multiple water bodies outside the pipe network, and their first hydrogen and oxygen isotope parameters are determined, and the first hydrogen and oxygen isotope parameters include: a first hydrogen isotope parameter and a first oxygen isotope parameter. The average value and standard deviation are calculated for multiple groups of first hydrogen isotope parameters and first oxygen isotope parameters of each water body outside the pipe network. In a two-dimensional coordinate system, hydrogen isotopes are used as the horizontal coordinate and oxygen isotopes are used as the vertical coordinate. The coordinate points of the water body outside the pipe network in the two-dimensional coordinate system are determined according to the average values ​​of multiple groups of first hydrogen isotope parameters and first oxygen isotope parameters, and the length of the rectangular area is determined by the standard deviation of the first hydrogen isotope parameter, and the width of the rectangular area is determined by the standard deviation of the first oxygen isotope parameter. According to the above-determined length and width, the rectangular area corresponding to the water body outside the pipe network in the two-dimensional coordinate system is determined to obtain a fingerprint spectrum.

[0089] Specific, for example Figure 2 As shown, Figure 2 The three rectangles A, B, and C in the figure represent fingerprints of multiple water bodies outside the pipe network. Figure 2 As shown in rectangle B, the center point of the rectangle is the average value of multiple groups of first hydrogen isotope parameters and first oxygen isotope parameters of the water body outside the pipe network; the length of the rectangle is the standard deviation of the first hydrogen isotope parameter, and the width is the standard deviation of the first oxygen isotope parameter. Similarly, the construction process of rectangles A and C is similar to that of rectangle B, which will not be repeated here.

[0090] One possible implementation method is to assume that there are multiple water bodies outside the pipe network, such as catering wastewater, groundwater, and river water. For multiple sets of first hydrogen isotope parameters and first oxygen isotope parameters of catering wastewater, groundwater, and river water, the average values ​​and standard deviations of multiple sets of first hydrogen isotope parameters and first oxygen isotope parameters can be calculated. Based on the obtained average values ​​and standard deviations of multiple sets of first hydrogen isotope parameters and first oxygen isotope parameters, a two-dimensional coordinate system is constructed. The specific construction process is as follows: Figure 3 As shown in the rectangle corresponding to groundwater, firstly, a two-dimensional coordinate system is constructed with hydrogen isotopes as the horizontal coordinates and oxygen isotopes as the vertical coordinates; secondly, Figure 2 In the process of constructing the fingerprint map, the coordinate points of the catering wastewater, groundwater and river water in the two-dimensional coordinate system are determined according to the average values ​​of the first hydrogen isotope parameter and the first oxygen isotope parameter of the catering wastewater, groundwater and river water; then, the length of the rectangular area is determined by the standard deviation of the first hydrogen isotope parameter, and the width of the rectangular area is determined by the standard deviation of the first oxygen isotope parameter to obtain the corresponding rectangular area; based on the length, width and coordinate points determined above, the corresponding rectangle of groundwater is constructed. Similarly, the construction process of the catering wastewater corresponding rectangle and the river water corresponding rectangle is similar to that of the groundwater corresponding rectangle, which will not be repeated here. Thus, the following is obtained: Figure 3 The fingerprint spectra corresponding to catering wastewater, groundwater and river water are shown.

[0091] Based on the first hydrogen and oxygen isotope parameters of water bodies outside multiple pipe networks, the constructed fingerprint map can provide a powerful tool for the management and maintenance of drainage pipe networks, help to achieve rapid and accurate identification of water sources, and thus improve the efficiency and effectiveness of water environment management.

[0092] S103: Determine the source map of the water body in the pipe network based on the fingerprint maps of multiple water bodies outside the pipe network.

[0093] Among them, based on the fingerprint maps of multiple water bodies outside the pipeline network, two first rectangles are randomly selected from the multiple first rectangles in the fingerprint map for pairing; the two right angles farthest apart from the two first rectangles are determined, and based on the two right angles, line segments are extended to both sides, and a second rectangle is constructed by extending in opposite directions, and the second rectangle is the minimum rectangle containing the two first rectangles; based on the multiple first rectangles and the multiple second rectangles, a source map of the water body in the official website is determined, and the first rectangle in the source map indicates the contribution area of ​​the water body of a single source type; the second rectangle indicates the contribution area of ​​the water body of different source types.

[0094] Based on the fingerprint maps of water bodies outside multiple pipe networks, the traceability maps of water bodies within the pipe network are determined, which can effectively identify and track the pollution sources within the drainage network, provide accurate data support for the protection and management of the water environment, thereby improving the management efficiency and the scientific nature of water resources management.

[0095] S104. Based on the second hydrogen and oxygen isotope parameters of the water in the pipe network, determine the tracing result of the water in the pipe network from the tracing map.

[0096] Among them, based on the second hydrogen and oxygen isotope parameters of the water body in the pipeline network, the isotope parameters of the water body in the pipeline network are matched with each fingerprint map in the traceability map; in the two-dimensional isotope coordinate system, the coordinate points of the water body in the pipeline network are determined according to the isotope parameters of the water body in the pipeline network; based on the position of the coordinate point, the target rectangular area of ​​the water body in the pipeline network in the traceability map is identified; considering the position of the coordinate point and the target rectangular area comprehensively, the final traceability result of the water body in the pipeline network is determined.

[0097] Based on the second hydrogen and oxygen isotope parameters of the water in the pipeline network, the tracing results of the water in the pipeline network can be effectively determined from the tracing map, which helps to accurately identify the pollution sources in the drainage network and improve the efficiency and effectiveness of water environment management.

[0098] This embodiment proposes a method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes. The method obtains water sampling data of the water body in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters; constructing a fingerprint map of each water body outside the drainage network based on the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the drainage network; determining a tracing map of the water body in the network based on the fingerprint maps of the multiple water bodies outside the drainage network; and determining the tracing result of the water body in the network from the tracing map based on the second hydrogen and oxygen isotope parameters of the water body in the network, thereby improving the efficiency and accuracy of tracing the source of water in the drainage network.

[0099] Figure 4 This is a schematic diagram of a method for tracing the source of water from a drainage network based on hydrogen and oxygen isotopes provided in an embodiment of the present application. Figure 2 This embodiment is in Figure 1 Based on the examples, the method for tracing the source of water in the drainage network based on hydrogen and oxygen isotopes is described in detail. Figure 4 As shown, the method comprises:

[0100] S401. Obtain water in the drainage network discharged from a drainage outlet of the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters.

[0101] Step S401 is the same as step S101 and will not be described again here.

[0102] S402: Based on the spatial position of the drainage network, determine a plurality of water body types outside the drainage network corresponding to the drainage network.

[0103] Among them, the spatial location and surrounding environment of the drainage network are analyzed through the geographic information system and other relevant map data; all potential external water bodies related to the spatial location of the drainage network, such as rivers, lakes, groundwater bodies, etc., are identified; the possibility of interaction between different water body types and the drainage network is evaluated, including natural flow, human activities and other factors; according to the identified water body types and their possibility of interaction with the network, a detailed water sampling plan is formulated.

[0104] S403, obtaining water samples outside the pipe network corresponding to multiple water body types outside the pipe network, and determining corresponding water body sampling data, wherein the water body sampling data includes: hydrogen and oxygen isotope parameters.

[0105] Among them, select appropriate sampling points from the identified water bodies to ensure that the sampling points can represent the characteristics of the water body. According to the collection requirements, sample the identified water bodies. Different types of water bodies outside the pipe network have different corresponding sampling standards. For example, the sampling standards for different types of water bodies outside the pipe network are as follows:

[0106]

[0107] Optionally, the collected water sample is filtered using a 0.22 μm aqueous phase needle filter to remove impurities in the water. The filtrate is then injected into a pre-cleaned and dried crimp-top sampling bottle using a bottom-inlet method until the filtrate overflows, thereby achieving the purpose of driving out all the air in the bottle.

[0108] Tighten the cap of the clamp-on injection bottle and confirm the airtightness of the cap by shaking to prevent the filtrate from coming into direct contact with oxygen and moisture in the outside air, which would cause an exchange reaction between hydrogen and oxygen stable isotopes and change the hydrogen and oxygen isotope parameters of the filtrate sample.

[0109] The crimp-top sampling bottles containing the filtrate and without airtightness problems are placed in a 4°C incubator for temporary storage to avoid changes in the hydrogen and oxygen isotope parameters due to evaporation of the filtrate. After being transported back to the laboratory, they are immediately stored in a 4°C environment and the hydrogen and oxygen isotope parameter testing is completed within 72 hours to determine the hydrogen and oxygen isotope parameters of the water bodies outside the pipe network corresponding to multiple types of water bodies outside the pipe network.

[0110] S404. Construct a fingerprint map of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network.

[0111] Step S404 is the same as step S102 and will not be described again.

[0112] S405. For any two fingerprints among the fingerprints of the water bodies outside the multiple pipe networks, a corresponding second rectangular area is determined based on the two fingerprints, where the second rectangular area is the minimum rectangular area containing the two fingerprints.

[0113] Among them, for the fingerprint maps of multiple water bodies outside the pipe network, any two of the fingerprint maps of the water bodies outside the pipe network are selected for comparison and combination, and based on the two first rectangles of the two fingerprint maps, the right-angled sides of the two first rectangles that converge the farthest are determined, and line segments are extended from both ends of the two right-angled sides that converge the farthest to both ends to construct a minimum second rectangular area that can simultaneously contain the two first rectangles.

[0114] S406: Determine a source map of the water body in the pipe network according to the multiple first rectangular areas and the multiple second rectangular areas.

[0115] According to the plurality of first rectangular areas and the plurality of second rectangular areas, a traceability map of the water body in the pipe network is determined, such as Figure 5 shown.

[0116] A possible implementation is based on Figure 3 Any two fingerprints of the fingerprints corresponding to catering wastewater, groundwater, and river water are used to determine the corresponding second rectangular area based on the two fingerprints. The source map of the water body in the pipe network is determined based on multiple first rectangular areas and multiple second rectangular areas, such as Figure 6 shown.

[0117] Constructing a traceability map of water bodies in the pipeline network is of great significance for understanding the origin, transmission path and possible pollution sources of the water bodies, and provides scientific and effective support for the management of the drainage network and the protection of the water environment.

[0118] S407. Determine the coordinate points of the water body in the pipe network on the two-dimensional coordinate system according to the second hydrogen and oxygen isotope parameters of the water body in the pipe network.

[0119] S408: Based on the coordinate point and the traceability map, determine the target rectangular area where the coordinate point is located in the traceability map.

[0120] Among them, according to the second hydrogen and oxygen isotope parameters of the water body in the pipe network, the second hydrogen and oxygen isotope parameters corresponding to the water body in the pipe network are determined, and the coordinate points corresponding to the water body in the pipe network in the two-dimensional coordinate system are drawn on the two-dimensional coordinate system. According to the coordinate points corresponding to the water body in the pipe network in the two-dimensional coordinate system and the traceability map, the target rectangular area where the coordinate points corresponding to the water body in the pipe network in the two-dimensional coordinate system are located in the traceability map is determined, such as Figure 7 As shown, points D, E, and F are the coordinate points of the water body in the pipe network.

[0121] S409: Based on the target rectangular area, determine the tracing result of the water body in the pipe network, where the tracing result is used to indicate at least one type of water body outside the pipe network included in the water body in the pipe network.

[0122] Among them, the target rectangular area where the coordinate points of the water body in the pipeline network fall in the two-dimensional coordinate system is analyzed, the target rectangular area is matched with the known fingerprint map of the water body outside the pipeline network, and at least one type of water body outside the pipeline network that is consistent with the isotopic characteristics of the water body in the pipeline network is identified.

[0123] Optionally, a possible implementation method is to use the second hydrogen and oxygen isotope parameters in the drainage network system and the first hydrogen and oxygen isotope parameters of each source type of water outside the drainage network system as prior information, and use the chemical mass balance as a constraint to generate a large number of posterior distributions of the contribution ratios of each source type of water that meet the constraint conditions using the Markov chain Monte Carlo algorithm. The average value of the posterior distribution of the contribution ratio is used as the final quantitative result of the contribution rate of each source type of water to the water in the drainage network.

[0124] This embodiment proposes a method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes. The method determines the type of external water body that affects the network according to the geographical location of the network, samples the identified external water body, and determines its hydrogen and oxygen isotope parameters; collects water samples at the drain outlet and determines its hydrogen and oxygen isotope parameters; uses the isotope data of the external water body to construct respective fingerprint maps, compares the fingerprint maps, determines the minimum rectangular area containing all potential sources, and constructs a tracing map; based on the isotope parameters and tracing map of the water body in the network, the source of the water body in the network is clarified, thereby improving the efficiency of tracing the source of water in the drainage network.

[0125] Figure 8 This is a schematic diagram of a method for tracing the source of water from a drainage network based on hydrogen and oxygen isotopes provided in an embodiment of the present application. Figure 3 This embodiment is in Figure 1 Based on the embodiment, a possible implementation method of constructing a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of multiple water bodies outside the pipe network is described in detail. Figure 8 As shown, the method comprises:

[0126] S801. Obtain standard values ​​and measured values ​​of hydrogen and oxygen isotopes of multiple standard water bodies.

[0127] S802. Construct a fitting equation based on the standard values ​​and measured values ​​of hydrogen and oxygen isotopes of multiple standard water bodies, and determine the fitting coefficient of the fitting equation.

[0128] Among them, a high-precision isotope analysis instrument is used to measure the hydrogen and oxygen isotope parameters of the standard water samples to obtain the actual measurement values. According to the known standard values ​​and measurement values ​​of the hydrogen and oxygen isotope parameters of each standard water sample, a fitting equation is constructed and the fitting coefficient of the fitting equation is determined.

[0129] S803. When the fitting coefficient meets the threshold, for any one of the multiple water bodies outside the pipe network, multiple groups of first hydrogen and oxygen isotope parameters are input into the fitting equation for correction to obtain multiple groups of first hydrogen and oxygen isotope parameters after correction, and the average values ​​of the multiple groups of first hydrogen and oxygen isotope parameters are determined, and the average values ​​include: hydrogen isotope average value and oxygen isotope average value.

[0130] Among them, when the fitting coefficient meets the threshold, all isotope measurement data of each water body outside the pipe network are corrected to eliminate the influence of measurement errors and environmental factors. For any of the multiple water bodies outside the pipe network, multiple groups of first hydrogen and oxygen isotope parameters are input into the fitting equation for correction, and the corrected multiple groups of hydrogen and oxygen isotope parameters are statistically analyzed to calculate the average value, including the hydrogen isotope average value and the oxygen isotope average value.

[0131] S804. Determine standard deviations of the multiple groups of first hydrogen and oxygen isotope parameters according to the multiple groups of first hydrogen and oxygen isotope parameters and the average values, where the standard values ​​include: a hydrogen isotope standard deviation and an oxygen isotope standard deviation.

[0132] Among them, based on the multiple groups of first hydrogen and oxygen isotope parameters and the average value, the hydrogen isotope standard deviation and the oxygen isotope standard deviation of the multiple groups of first hydrogen and oxygen isotope parameters are calculated.

[0133] S805. Construct a two-dimensional coordinate system with hydrogen isotopes as the horizontal coordinate and oxygen isotopes as the vertical coordinate, and determine the coordinate points of the water body outside the pipe network in the two-dimensional coordinate system based on the average value.

[0134] A coordinate system is defined in a two-dimensional space, wherein the horizontal axis, i.e., the X-axis, represents hydrogen isotopes, and the vertical axis, i.e., the Y-axis, represents oxygen isotopes. The coordinate point of the water body outside the pipe network in the two-dimensional coordinate system is determined according to the average hydrogen isotope value and the average oxygen isotope value of any one of the multiple water bodies outside the pipe network.

[0135] S806. Based on the coordinate point and the standard deviation, determine the first rectangular area corresponding to the water body outside the pipe network in the two-dimensional coordinate system, and use the first rectangular area as the fingerprint of the water body outside the pipe network. The center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

[0136] Among them, taking the coordinate point as the center, the length of the rectangular area is determined according to the hydrogen isotope standard deviation, and the width of the rectangular area is determined according to the oxygen isotope standard deviation, and the first rectangular area is constructed to obtain the fingerprint map of the water body outside the pipeline network.

[0137] This embodiment proposes a method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes. The method constructs a fitting equation based on the standard values ​​and measured values ​​of hydrogen and oxygen isotopes of multiple standard water bodies; when the fitting coefficient meets the threshold, the isotope parameters of the water body outside the network are corrected to obtain the corrected data; the average value and the standard deviation of the corrected isotope parameters, including the standard deviation of hydrogen isotopes and oxygen isotopes, are calculated; and a two-dimensional coordinate system is constructed based on the average value and the standard deviation, and a rectangular area representing the water body outside the network is drawn in the two-dimensional coordinate system to obtain a fingerprint map, thereby improving the accuracy of tracing the source of water in the drainage network and enhancing the reliability of water body tracing.

[0138] Fig. 9 A schematic diagram of the structure of a drainage network water source tracing device based on hydrogen and oxygen isotopes provided in this application, such as Fig. 9 As shown, the drainage network water source tracing device 900 based on hydrogen and oxygen isotopes provided in this embodiment includes:

[0139] The acquisition module 901 is used to acquire water sampling data of the water body in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters;

[0140] A processing module 902 is used to construct a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network;

[0141] A determination module 903, configured to determine a source traceability map of the water body in the pipe network based on the fingerprint maps of multiple water bodies outside the pipe network;

[0142] The determination module 903 is also used to determine the tracing result of the water body in the pipe network from the tracing map based on the second hydrogen and oxygen isotope parameters of the water body in the pipe network.

[0143] Optionally, the processing module 902 is further used to perform correction processing on multiple groups of first hydrogen and oxygen isotope parameters of any one of the multiple water bodies outside the pipe network;

[0144] The determination module 903 is further used to determine the average values ​​of the plurality of groups of first hydrogen and oxygen isotope parameters, wherein the average values ​​include: the average value of hydrogen isotopes and the average value of oxygen isotopes;

[0145] The processing module 902 is further used to construct a fingerprint of the water body outside the pipe network according to the multiple groups of first hydrogen and oxygen isotope parameters and the average value.

[0146] Optionally, the acquisition module 901 is further used to acquire standard values ​​and measured values ​​of hydrogen and oxygen isotopes of multiple standard water bodies;

[0147] The processing module 902 is further used to construct a fitting equation according to the standard values ​​and measured values ​​of the hydrogen and oxygen isotopes of the plurality of standard water bodies;

[0148] The determination module 903 is further used to determine the fitting coefficient of the fitting equation;

[0149] The processing module 902 is further used to input the multiple groups of first hydrogen and oxygen isotope parameters into the fitting equation for correction when the fitting coefficient meets the threshold, so as to obtain multiple groups of first hydrogen and oxygen isotope parameters after correction.

[0150] Optionally, the determination module 903 is further used to determine the standard deviation of the multiple groups of first hydrogen and oxygen isotope parameters according to the multiple groups of first hydrogen and oxygen isotope parameters and the average value, and the standard value includes: a hydrogen isotope standard deviation and an oxygen isotope standard deviation;

[0151] The processing module 902 is further used to construct a two-dimensional coordinate system with hydrogen isotopes as horizontal coordinates and oxygen isotopes as vertical coordinates;

[0152] The determination module 903 is further used to determine the coordinate point of the water body outside the pipe network in the two-dimensional coordinate system according to the average value;

[0153] The determination module 903 is also used to determine, in the two-dimensional coordinate system, a first rectangular area corresponding to the water body outside the pipeline network based on the coordinate point and the standard deviation, and use the first rectangular area as the fingerprint map of the water body outside the pipeline network, the center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

[0154] Optionally, the determination module 903 is further configured to determine, for any two fingerprints of the multiple fingerprints of the water bodies outside the pipe network, a corresponding second rectangular area based on the two fingerprints, where the second rectangular area is a minimum rectangular area containing the two fingerprints;

[0155] The determination module 903 is further used to determine a source map of the water body in the pipe network according to the multiple first rectangular areas and the multiple second rectangular areas.

[0156] Optionally, the determination module 903 is further used to determine the coordinate point of the water body in the pipe network on the two-dimensional coordinate system according to the second hydrogen and oxygen isotope parameter of the water body in the pipe network;

[0157] The determination module 903 is further configured to determine, based on the coordinate point and the traceability map, a target rectangular area where the coordinate point is located in the traceability map;

[0158] The determination module 903 is further used to determine a tracing result of the water body in the pipe network based on the target rectangular area, and the tracing result is used to indicate at least one type of water body outside the pipe network included in the water body in the pipe network.

[0159] Optionally, the determination module 903 is further used to determine a plurality of water body types outside the drainage network corresponding to the drainage network based on the spatial position of the drainage network;

[0160] The acquisition module 901 is further used to acquire the water body samples outside the pipe network corresponding to the multiple water body types outside the pipe network;

[0161] The determination module 903 is also used to determine corresponding water body sampling data, wherein different types of water bodies outside the pipe network correspond to different sampling standards.

[0162] The present embodiment provides a drainage network water source tracing device based on hydrogen and oxygen isotopes, which can execute the drainage network water source tracing method based on hydrogen and oxygen isotopes provided in the above method embodiment. Its implementation principle and technical effects are similar, and will not be described in detail in the present embodiment.

[0163] Fig.10 This is a schematic diagram of the structure of a drainage network water source tracing device based on hydrogen and oxygen isotopes provided in this application. Fig.10 As shown, the present application provides a drainage network water source tracing device based on hydrogen and oxygen isotopes. The drainage network water source tracing device 1000 based on hydrogen and oxygen isotopes includes: a receiver 1001, a transmitter 1002, a processor 1003 and a memory 1004.

[0164] Receiver 1001, used for receiving instructions and data;

[0165] A transmitter 1002, used for sending instructions and data;

[0166] Memory 1004, used to store computer-executable instructions;

[0167] The processor 1003 is used to execute the computer-executable instructions stored in the memory 1004 to implement the various steps performed by the drainage network water source tracing method based on hydrogen and oxygen isotopes in the above embodiment. For details, please refer to the relevant description in the above embodiment of the drainage network water source tracing method based on hydrogen and oxygen isotopes.

[0168] Optionally, the memory 1004 may be independent or integrated with the processor 1003 .

[0169] When the memory 1004 is independently provided, the electronic device further includes a bus for connecting the memory 1004 and the processor 1003 .

[0170] This embodiment provides a drainage network water source tracing device based on hydrogen and oxygen isotopes, which can execute the drainage network water source tracing method based on hydrogen and oxygen isotopes provided in the above method embodiment. Its implementation principle and technical effects are similar, and this embodiment will not be repeated here.

[0171] The present application also provides a computer storage medium, in which computer execution instructions are stored. When a processor executes the computer execution instructions, a method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes as performed by the above-mentioned drainage network water tracing device based on hydrogen and oxygen isotopes is implemented.

[0172] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0173] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0174] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes, characterized in that: The method comprises: Acquire water sampling data of water in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters; Constructing a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network; For any two fingerprints of the plurality of fingerprints of the water bodies outside the pipe network, based on the two fingerprints, a corresponding second rectangular area is determined, where the second rectangular area is a minimum rectangular area including the two fingerprints; Determine a source map of the water body in the pipe network according to the plurality of first rectangular areas and the plurality of second rectangular areas; Based on the second hydrogen and oxygen isotope parameters of the water in the pipe network, determining the tracing result of the water in the pipe network from the tracing map; The number of first hydrogen and oxygen isotope parameters of each water body outside the pipe network is multiple groups, and the fingerprint spectrum of each water body outside the pipe network is constructed according to the first hydrogen and oxygen isotope parameters of the multiple water bodies outside the pipe network, including: For any one of the multiple water bodies outside the pipeline network, calibrate multiple groups of first hydrogen and oxygen isotope parameters of the water body outside the pipeline network, and determine the average values ​​of the multiple groups of first hydrogen and oxygen isotope parameters, where the average values ​​include: hydrogen isotope average value and oxygen isotope average value; Determine the standard deviation of the plurality of first hydrogen and oxygen isotope parameters according to the plurality of first hydrogen and oxygen isotope parameters and the average value, wherein the standard value includes: a hydrogen isotope standard deviation and an oxygen isotope standard deviation; A two-dimensional coordinate system is constructed with hydrogen isotopes as the horizontal coordinate and oxygen isotopes as the vertical coordinate, and the coordinate points of the water body outside the pipe network in the two-dimensional coordinate system are determined according to the average value; Based on the coordinate point and the standard deviation, a first rectangular area corresponding to the water body outside the pipeline network is determined in the two-dimensional coordinate system, and the first rectangular area is used as the fingerprint spectrum of the water body outside the pipeline network, the center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

2. The method according to claim 1, characterized in that: The correction processing of the plurality of groups of first hydrogen and oxygen isotope parameters of the water body outside the pipe network includes: Obtain standard values ​​and measured values ​​of hydrogen and oxygen isotopes in multiple standard water bodies; Constructing a fitting equation according to the standard values ​​and measured values ​​of the hydrogen and oxygen isotopes of the plurality of standard water bodies, and determining a fitting coefficient of the fitting equation; When the fitting coefficient meets the threshold value, the multiple groups of first hydrogen and oxygen isotope parameters are input into the fitting equation for correction to obtain multiple groups of corrected first hydrogen and oxygen isotope parameters.

3. The method according to claim 1, characterized in that The determining the tracing result of the water body in the pipe network from the tracing map based on the second hydrogen and oxygen isotope parameter of the water body in the pipe network includes: Determining coordinate points of the water body in the pipe network on the two-dimensional coordinate system according to the second hydrogen and oxygen isotope parameters of the water body in the pipe network; Based on the coordinate point and the traceability map, determining a target rectangular area where the coordinate point is located in the traceability map; Based on the target rectangular area, a tracing result of the water body in the pipe network is determined, and the tracing result is used to indicate at least one type of water body outside the pipe network included in the water body in the pipe network.

4. The method according to claim 1, characterized in that The step of obtaining water body sampling data of a plurality of water bodies outside the drainage network includes: Based on the spatial position of the drainage pipe network, determining a plurality of water body types outside the pipe network corresponding to the drainage pipe network; The off-pipeline water body samples corresponding to the multiple off-pipeline water body types are obtained, and the corresponding water body sampling data are determined, wherein different off-pipeline water body types correspond to different sampling standards.

5. A drainage network water source tracing device based on hydrogen and oxygen isotopes, characterized in that: The device comprises: An acquisition module is used to acquire water sampling data of the water body in the drainage network discharged from the drainage outlet of the drainage network and multiple water bodies outside the drainage network, wherein the water sampling data includes: hydrogen and oxygen isotope parameters; A processing module, used for constructing a fingerprint spectrum of each water body outside the pipe network according to the first hydrogen and oxygen isotope parameters of the plurality of water bodies outside the pipe network; A determination module, for determining, for any two fingerprints of the multiple fingerprints of the water bodies outside the pipe network, a corresponding second rectangular area based on the two fingerprints, wherein the second rectangular area is a minimum rectangular area containing the two fingerprints; and determining a traceability map of the water body in the pipe network based on the multiple first rectangular areas and the multiple second rectangular areas; The determination module is further used to determine the tracing result of the water body in the pipe network from the tracing map based on the second hydrogen and oxygen isotope parameter of the water body in the pipe network; The processing module is further used to perform correction processing on multiple groups of first hydrogen and oxygen isotope parameters of any one of the multiple water bodies outside the pipe network; The determination module is further used to determine the average values ​​of the multiple groups of first hydrogen and oxygen isotope parameters, wherein the average values ​​include: the average value of hydrogen isotopes and the average value of oxygen isotopes; The determination module is further used to determine the standard deviation of the multiple groups of first hydrogen and oxygen isotope parameters according to the multiple groups of first hydrogen and oxygen isotope parameters and the average value, wherein the standard value includes: a hydrogen isotope standard deviation and an oxygen isotope standard deviation; The processing module is further used to construct a two-dimensional coordinate system with hydrogen isotopes as horizontal coordinates and oxygen isotopes as vertical coordinates; The determination module is further used to determine the coordinate point of the water body outside the pipe network in the two-dimensional coordinate system according to the average value; The determination module is also used to determine, in the two-dimensional coordinate system, a first rectangular area corresponding to the water body outside the pipeline network based on the coordinate point and the standard deviation, and use the first rectangular area as the fingerprint map of the water body outside the pipeline network, the center point of the first rectangular area is the coordinate point, the length of the first rectangular area is the hydrogen isotope standard deviation, and the width of the first rectangular area is the oxygen isotope standard deviation.

6. A drainage network water source tracing device based on hydrogen and oxygen isotopes, characterized in that: include: Memory; processor; Wherein, the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method for tracing the source of water in the drainage network based on hydrogen and oxygen isotopes as described in any one of claims 1-4.

7. A computer storage medium, characterized in that: The computer storage medium stores computer execution instructions, which, when executed by a processor, are used to implement the method for tracing the source of water in a drainage network based on hydrogen and oxygen isotopes as described in any one of claims 1 to 4.

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