Checking method for improving plain urban water environment

Abstract

The invention provides a checking method taking plain urban water environment improvement as a target, which aims at improving river water quality, and determines a plurality of influence factors associated with the river water quality and checking contents and checking methods corresponding to the influence factors; checking the checking information corresponding to the checking content of each influence factor by adopting a checking method corresponding to each influence factor to obtain an initial checking result; and analyzing each initial checking result to obtain an engineering analysis result with the plain urban water environment improvement as the target. According to the method, a standard investigation and analysis method for improving the plain urban water environment is formed; on one hand, the family bottom of an urban rainwater drainage system can be found out; and on the other hand, the problem of the whole transmission system of the current rainwater from rainfall to river surge can be found out, a foundation is laid for effective engineering measures for improving the water quality of the water environment, and a set of scientific research data of an urban rainwater drainage system can be formed by utilizing each initial checking result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river water environment management, in particular to a method for investigation aiming at improving the water environment of a plain city. BACKGROUND

[0002] With the deepening of urbanization construction process, the disadvantages of rapid urban expansion are increasingly evident. Rapid expansion leads to the fact that the urban drainage system is not planned in an orderly and unified manner, and the rainwater and sewage are not effectively separated, and the drainage system pipeline is laid, which results in the frequent occurrence of black and smelly water phenomenon in the city, causes river pollution and other problems. In order to carry out the water environment improvement measures of the city, it is particularly important to find out the details of the urban rainwater drainage system. At present, most of the related investigation focuses on local detail investigation method, and does not conduct systematic problem factor analysis for systematic investigation in a goal-oriented manner. The investigation results formed do not have a set of systematic methods as the basis for engineering practice. SUMMARY

[0003] The purpose of the present application is to provide a method for investigation aiming at improving the water environment of a plain city, to find out the details of the urban rainwater drainage system, to effectively analyze the problem of the urban water system according to the investigation results, to be the basis for the improvement of the existing urban water system related facilities, to be the basic step for expanding the effective investment of the city, to provide guidance for subsequent similar research projects, to provide a large amount of engineering data for related scientific research work, to effectively integrate related field scientific research work and real data, and to effectively guide the research direction in the related field.

[0004] The method provided by the present application is a method for investigation aiming at improving the water environment of a plain city, which comprises the following steps: taking improving the water quality of a river as a target, and deducing a plurality of influence factors affecting the quality of the urban water environment, wherein the plurality of influence factors comprise: city basic data, source point source mixed into the urban rainwater drainage system, urban non-point source pollution overflow into the river, municipal rainwater access to sewage, culvert, pollution source discharge into the river, plant facilities, rainwater system node water quality; for each influence factor, determine the investigation content matched with the influence factor; the investigation information corresponding to each investigation content of the influence factor is investigated by using the corresponding investigation method, and the initial investigation result corresponding to the influence factor is obtained; each initial investigation result is analyzed, and the engineering analysis result of improving the water environment of the plain city is obtained, and a set of systematic and complete investigation method is formed, which indicates the direction for similar engineering investigation.

[0005] The method finally obtains a set of city data and urban rainwater drainage system data, which provides basic data for the operation and maintenance of the urban rainwater drainage system, the improvement of the urban rainwater drainage facilities, and the implementation of the engineering measures aiming at improving the water environment, and can also use the investigation results as a set of scientific research data of the urban rainwater drainage system, and integrate the engineering data with the scientific research in the field to promote the development of related technologies in the field.

[0006] Further, the investigation contents corresponding to the city type basic data include: oblique photogrammetry data, population and industrial economic data, land status and planning data, river channel building data, historical relics and ancient wood data, wherein: the investigation information corresponding to the oblique photogrammetry data includes but is not limited to: the present situation of topography, landmark buildings and other visual present situation of urban street view; the investigation information corresponding to the population and industrial economic data includes but is not limited to: the partition of urban town sewage regional catchment, the number of recent and long-term permanent population and floating population in each region, the production and manufacturing situation of various industries and the type of pollutants; the investigation information corresponding to the land status and planning data includes but is not limited to: the present situation of land use type, planning land type; the investigation information corresponding to the river channel building data includes but is not limited to: the structure situation within the river channel blue-green line range; the investigation information corresponding to the historical relics and ancient wood data includes but is not limited to: the type, location distribution and quantity of historical relics and ancient wood. The investigation method corresponding to the city type basic data includes: field investigation, information collection investigation; the investigation results of the city type basic data includes but is not limited to: city oblique photogrammetry results, population economic and industrial economic data results, land use and planning statistical results, river channel building distribution results, historical relics and ancient wood distribution census results; the result form of the investigation results of the city type basic data includes but is not limited to: Excel, CAD, text and the like, such as: city oblique photogrammetry plan, population economic and industrial economic investigation table, land use and planning statistical chart, river channel building distribution chart, historical relics and ancient wood distribution census chart. Form the data of population, pollution load, historical relics and ancient wood, and analyze the data combined with the investigation results of the city type basic data to obtain the corresponding city type basic data analysis results; the city type basic data analysis results include but are not limited to: city pollution load total amount analysis. The city pollution load total amount analysis provides basis for present situation grasping and post engineering practice effect analysis, and has important indicative significance for the operation capacity, treatment capacity and analysis of external water of the sewage plant.

[0007] Further, the investigation content corresponding to the situation of the source point source mixed into the urban rainwater drainage system includes: the collection situation of domestic pollution sources and the collection situation of industrial pollution sources. The collection situation of domestic pollution sources includes: the situation of source rainwater pipes and combined pipe networks and the situation of source pollution sources. The collection situation of industrial pollution sources includes: the situation of industrial pollution source drainage systems and the related characteristics and discharge situation of industrial pollution sources. The investigation information corresponding to the situation of source rainwater pipes and combined pipe networks includes but is not limited to: the position of rainwater pipes and combined pipes, the direction of rainwater pipes, the information of connecting wells, pipe diameter, material, buried depth, and accessory information. The investigation information corresponding to the situation of source pollution sources includes but is not limited to: the attribute of pollutants and the discharge amount of pollutants. The investigation information corresponding to the related characteristics and discharge situation of industrial pollution sources includes but is not limited to: the attribute of pollutants and the discharge amount of pollutants. The investigation method corresponding to the situation of the source point source mixed into the urban rainwater drainage system includes: field investigation and collection investigation. The investigation results of the situation of the source point source mixed into the urban rainwater drainage system include but are not limited to: the distribution results of point source pollution, the results of drainage pipe networks of drainage units, the investigation results of industrial wastewater characteristics, and the investigation results of industrial wastewater discharge. The result forms of the investigation results of the situation of the source point source mixed into the urban rainwater drainage system include but are not limited to: Excel, CAD, and text, such as: the chart of the distribution situation of point source pollution, the chart of pipe network systems of drainage units, the investigation system chart of industrial wastewater, and the statistical table of industrial wastewater investigation. Data analysis is performed on the investigation results of the situation of the source point source mixed into the urban rainwater drainage system to obtain corresponding first data analysis results. The first data analysis results include: analysis of missing point source pollution load, analysis of point source pollution load into factories and rivers, and analysis of industrial pollution load. The production situation and pollution production situation of urban areas are mastered, and the load of domestic pollution sources and industrial pollution sources in dry seasons and rainy seasons, into factories and rivers is analyzed to determine the influence of pollution load into rivers in dry and rainy seasons on water quality.

[0008] Further, the investigation content corresponding to the urban non-point source pollution overflow into the river situation includes: agricultural markets, open-air catering, auto repair, garbage transfer stations, and agricultural non-point sources. Each investigation content corresponding to the urban non-point source pollution overflow into the river situation includes, but is not limited to: pollution source location, pollution nature, non-point source pollution source type, area, red line range, facility condition, external drainage network, internal drainage condition, pollution direction condition, and on-site photos. The investigation method corresponding to the urban non-point source pollution overflow into the river situation includes: on-site investigation and information collection. The investigation results of the urban non-point source pollution overflow into the river situation include, but are not limited to: non-point source pollution distribution results. The result form of the investigation results of the urban non-point source pollution overflow into the river situation includes, but is not limited to: Excel, CAD, and text, such as: non-point source pollution distribution map and non-point source pollution statistical table. Data analysis is performed in combination with the investigation results of the urban non-point source pollution overflow into the river situation to obtain corresponding second data analysis results. The second data analysis results include: analysis of non-point source pollution into the plant and into the river load in dry and rainy seasons. The non-point source pollution situation is analyzed, and the pollution load into the plant and into the river in dry and rainy seasons is analyzed to determine the different pollution degree regions of non-point source pollution and the influence of non-point source pollution on river water quality.

[0009] Further, the municipal rainwater access sewage situation corresponding to the investigation content includes: municipal sewage pipe network misconnection, dark connection branch pipe, interception well, wherein: the municipal sewage pipe network misconnection and dark connection branch pipe corresponding to the investigation information includes but is not limited to: misconnection point, water source, drainage direction, pipe network size, elevation, pipe material and other basic parameters, the interception well corresponding to the investigation information includes but is not limited to: interception pipe and overflow pipe investigation (pipe bottom elevation, pipe diameter), interception well investigation (interception well size, buried depth, weir top elevation, weir width, interception wall top and bottom elevation, side wall position, interception multiple). The investigation method of municipal rainwater access sewage situation includes: field investigation and data collection, three-dimensional laser, closed circuit television system (CCTV), pipe periscope (QV), sonar detection; the investigation result of municipal rainwater access sewage situation includes but is not limited to: rain and sewage drainage pipe network result, misconnection investigation result, interception system investigation result; the result form of municipal rainwater access sewage situation investigation result includes but is not limited to: Excel, CAD, text and the like, such as: rain and sewage drainage pipe network distribution map, misconnection distribution map, misconnection statistical table, interception system distribution map, interception system investigation table, form a pipe network system one map and table basic database, and obtain the misconnection, interception of the rainwater access sewage situation affecting the river water quality, combined with the municipal rainwater access sewage situation investigation result, data analysis is carried out, and the corresponding third data analysis result is obtained; the third data analysis result includes: misconnection point pollution load analysis, dark connection point pollution load analysis, overflow into river pollution source analysis, analyzes the pollution load problem of dark connection and misconnection, interception system pollution load in dry and rainy season, and the above cases lead to and influence the degree of river.

[0010] Further, the corresponding investigation content of the culvert includes: culvert body condition, culvert outlet condition, and culvert siltation condition, wherein: the investigation information of the culvert body condition includes but is not limited to: body size, spatial position distribution, culvert material, length, width, height, number of chambers (single culvert, double culvert, and triple culvert), inner bottom elevation, top elevation, slope, intercept weir (including but not limited to weir top elevation and weir width), intercept pipe (including but not limited to pipe bottom elevation and pipe diameter), intercept wall (including but not limited to wall top and wall bottom elevation and side wall position), the investigation information of the culvert outlet condition includes but is not limited to: drainage type (rainwater, sewage, combined flow, and intercept), pipe diameter, elevation, size, material, and outlet flap of the outlet and upstream pipeline of the outlet; the investigation information of the culvert siltation condition includes but is not limited to: water depth in the culvert and siltation depth. The corresponding investigation method of the culvert includes: field investigation and data collection, three-dimensional laser, closed-circuit television system (CCTV), and pipe periscope (QV); the investigation results of the culvert include but are not limited to: culvert investigation results, culvert siltation investigation results, and culvert outlet investigation results, and the result form of the investigation results of the culvert includes but is not limited to: Excel, CAD, and text, such as: culvert distribution map, culvert size statistical table, culvert siltation investigation chart, culvert outlet distribution map, and culvert outlet statistical table, to form the statistical results of the distribution, outlet, and siltation of the culvert. Data analysis is performed in combination with the investigation results of the culvert to obtain corresponding fourth data analysis results; the fourth data analysis results include: analysis of pollution load entering the culvert and analysis of release of pollution load of present bottom mud, to obtain the pollution load entering the culvert, provide data support for subsequent culvert treatment, and analyze other pollution sources entering the culvert and the bottom mud in the culvert accumulated for many years.

[0011] Further, the pollution source river discharge situation corresponds to the investigation content, including: river open channel situation, river discharge outlet situation, river bottom mud situation, and water conservancy facilities in the river situation. The river open channel situation corresponds to the investigation information, including but not limited to: river, branch flow, open channel, small lake and pond distribution, size, river bottom elevation, normal water level, flood level, river discharge outlet situation corresponds to the investigation information, including but not limited to: upstream pipeline and discharge outlet coordinates, elevation, specification, material, type (sewage, rainwater, combined flow, interception), pipe bottom elevation and water quality flow, whether the drainage outlet has a flap valve, flap valve top and bottom elevation, and flap valve material. The water conservancy facilities in the river situation corresponds to the investigation information, including but not limited to: drainage pump station, water gate and weir and other water conservancy facilities data, water conservancy facilities data including: type, location, belonging street, operation situation and flow and other information, and different depth pollutants in the river; the river bottom mud situation corresponds to the investigation information, including but not limited to: detecting different depth pollutants, bottom mud monitoring mainly detects silt moisture content, total nitrogen, total phosphorus, heavy metals (copper, zinc, lead, cadmium, nickel, chromium, mercury, arsenic), pH, organic matter and other indicators; the pollution source river discharge situation corresponds to the investigation method, including: field investigation and information collection, bottom mud detection, and the pollution source river discharge situation investigation result includes but is not limited to: river open channel result, river discharge outlet investigation result, discharge outlet tracing result, river bottom mud detection result, and water conservancy facilities in the river investigation result; the pollution source river discharge situation investigation result includes but is not limited to: Excel, CAD, text and the like, such as: river open channel distribution map, river discharge outlet and upstream pipeline distribution map, river discharge outlet statistical table, river sewage and combined flow discharge outlet pollution source discharge path diagram, river bottom mud detection analysis diagram and report, and water conservancy facilities in the river distribution map and statistical table. Data analysis is carried out combined with the pollution source river discharge situation investigation result, to obtain the corresponding fifth data analysis result; the fifth data analysis result includes but is not limited to: river internal source pollution load release analysis, river pollution load analysis, and river water environmental capacity analysis, analyzing river water environmental capacity under different hydrodynamic conditions, providing the latest complete data for river discharge outlet pollution into river supervision, and providing data support for subsequent water conservancy optimal operation.

[0012] Further, the corresponding troubleshooting content of the plant station facility includes: sewage treatment plant operation, pump station facility operation, and decentralized treatment facility operation. The corresponding troubleshooting information of the sewage treatment plant operation includes, but is not limited to: internal structure basic parameters (such as structure size, elevation, pump operation parameters, pipe size, elevation, etc.), plant operation capacity (including, but not limited to, service population, design scale, current operation situation, carbon source dosage and dosage position), sewage treatment process (including, but not limited to, process flow, process pollution load reduction capacity), and pollution load treatment (including, but not limited to, each single body sewage water quality, effluent sewage water quality). The corresponding troubleshooting information of the pump station facility operation includes, but is not limited to: pump body internal structure basic parameters (including, but not limited to, structure size, elevation, pump operation parameters, pipe size, elevation, etc.), pump station operation capacity (including, but not limited to, service population, design scale, current operation situation). The corresponding troubleshooting information of the decentralized treatment facility operation includes, but is not limited to: structure basic parameters (including, but not limited to, structure size, elevation, pump operation parameters, pipe size, elevation, etc.), facility operation capacity (including, but not limited to, service population, design scale, current operation situation), sewage treatment process (including, but not limited to, process flow, process pollution load reduction capacity), and pollution load treatment (including, but not limited to, inflow water quality, effluent water quality). The corresponding troubleshooting method of the plant station facility includes: on-site investigation and data collection, and plant internal water quality detection. The plant station facility troubleshooting result includes, but is not limited to: plant operation situation result, and the result form of the plant station facility troubleshooting result includes, but is not limited to: Excel, text, etc. For example: plant operation situation report, which provides a basis for later analysis and water plant expansion. Data analysis is performed in combination with the plant station facility troubleshooting result to obtain corresponding sixth data analysis result. The sixth data analysis result includes: dry season and rainy season plant operation capacity analysis, dry season and rainy season inflow concentration analysis, sewage treatment plant inflow concentration analysis, operation capacity, and pollution load reduction analysis.

[0013] Furthermore, the inspection contents corresponding to the water quality of rainwater system nodes include: source water quality detection data, municipal rainwater system node water quality detection data, river inlet water quality detection data, and river and stream water quality detection data; source rainwater water quality detection data, municipal rainwater system node water quality detection data, river inlet water quality detection data, and river and stream water quality detection data; the corresponding inspection information includes but is not limited to: Chemical Oxygen Demand (COD) at the pipeline network, five-day biochemical oxygen demand (BOD5, where BOD stands for Biochemical Oxygen Demand), ammonia nitrogen, total phosphorus, total nitrogen, water volume, and rainy season rainfall indicators; the inspection methods corresponding to the water quality of rainwater system nodes include: water quality testing; the inspection results of rainwater system node water quality include but are not limited to: current water quality detection results, and the output formats of rainwater system node water quality inspection results include but are not limited to: Excel, CAD, text, etc., such as current water quality distribution map, water quality data monitoring table, dry season water quality and water volume distribution map. Data analysis was conducted in conjunction with the results of the rainwater system node water quality inspections to obtain the corresponding seventh data analysis results; the seventh data analysis results include: dry and rainy season drainage system water quality and quantity analysis. Using the test results to reversely verify and support the above-mentioned inspection results, the forward inspection combined with the reverse water quality inspection to effectively improve the inspection accuracy, provide a strong basis for the analysis of the effects before and after the project, and serve as a basis for the dynamic adjustment of engineering measures. The analysis also analyzes the discharge of pollution sources in the dry season and the impact of pollution sources in different zones during the rainy season, forming a set of scientific research data on urban drainage systems.

[0014] Furthermore, by combining the above eight aspects of integrated analysis, the final engineering analysis results for improving the water environment in plain cities are as follows: analysis of pollution source loads entering factories and rivers during dry and rainy seasons, analysis of the impact of urban hydraulic scheduling, comparative analysis of water environment capacity and pollution load entering rivers, and analysis of water quality and quantity of drainage systems during dry and rainy seasons. The analysis of pollution source loads entering factories and rivers during dry and rainy seasons is mainly based on the location and discharge of pollution sources into rainwater channels confirmed by preliminary investigations, and then the pollution source load entering rivers is analyzed; the analysis of the impact of urban hydraulic scheduling is mainly based on the current operation of hydraulic facilities, the analysis of river water dynamics, and the determination of the degree of impact of water dynamics on river water environment capacity; the comparative analysis of water environment capacity and pollution load entering rivers is mainly based on the analysis of the pollution load entering rivers based on the current water environment capacity of rivers and streams combined with the pollution load of rivers and streams, and the impact of different scheduling methods on the water environment is summarized and analyzed according to the analysis of the impact of urban hydraulic scheduling. The water environment capacity and pollution load entering rivers are compared and analyzed under different scheduling conditions to determine the environmental carrying capacity of rivers and streams. The water quality and quantity analysis of the drainage system in the dry and rainy seasons mainly analyzes the pollution load borne by the drainage system under different weather conditions, determines the location of the pollution source, and studies and analyzes the changes in the pollution load during the transmission process of the urban sewage pipe network.

[0015] The application provides a checking method for the purpose of improving the water environment of a plain city, determines a plurality of influence factors related to the water quality of a river and a checking content and a checking method corresponding to each influence factor for the purpose of improving the water quality of the river, checks the checking information corresponding to the checking content of each influence factor by using the checking method corresponding to each influence factor, and obtains initial checking results; and analyzes each initial checking result to obtain engineering analysis results for the purpose of improving the water environment of the plain city. The method forms a set of standard checking and analyzing methods for the purpose of improving the water environment of the plain city, can find out the details of the urban rainwater drainage system on the one hand, and can find out the problems of the whole transmission system from rainfall to the river on the other hand, lays a foundation for effective engineering measures for improving the water environment and the water quality, and can form a set of scientific research data of the urban rainwater drainage system by using each initial checking result. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0017] Figure 1 A flow chart of a checking method for the purpose of improving the water environment of a plain city provided by an embodiment of the present application; Figure 2 A system diagram of a checking method for the purpose of improving the water environment of a plain city provided by an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described clearly and completely in combination with embodiments. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present application.

[0019] The drainage system is not orderly planned in the early stage of urban development, and the rainwater and sewage are not effectively separated, resulting in the combined flow of rainwater and sewage in the city, and the frequent black and odorous phenomenon of water body. In order to improve the water environment, it is particularly important to find out the details of the urban rainwater drainage system. At present, most of the related investigations focus on local detail investigation methods, and are not goal-oriented and systematic investigation methods. For example, in the related technology, the topological structure of the drainage pipe network can be based on the investigation, classified analysis is carried out, and the visualization diagram of the drainage pipe network is taken as the final goal. The investigation results formed are still lack of a set of methods as the basis for engineering practice. Based on this, the embodiment of the present application provides an investigation method with the improvement of the water environment of the plain city as the goal. The technology is applied to the preliminary investigation of the urban water environment improvement and reconstruction, and the basic data of the urban drainage system can be obtained synchronously, which is convenient for later operation and maintenance. A large amount of engineering data can also promote the related scientific analysis in the field of water environment.

[0020] In order to facilitate the understanding of the present embodiment, first, a kind of investigation method with the improvement of the water environment of the plain city as the goal is introduced, as shown in Figure 1 The method comprises the following steps: Step S102, taking the improvement of river water quality as the goal, deducing a plurality of influence factors affecting the urban water environment; The river water quality is generally a general term for the water quality of small rivers, waterways or urban rivers. The urban drainage system is connected with these waterways, farmland irrigation and the like, and the water quality of the urban drainage system directly affects the river water quality and indirectly relates to the ecological environment, the health of residents and the urban landscape. In actual implementation, the river water quality improvement and regulation range is delimited, and the investigation boundary is determined in combination with the boundary of the urban drainage system discharging to the river. In the present embodiment, it is clear that the improvement of river water quality in the boundary is the investigation target.

[0021] According to the investigation target, each type of influence factor affecting the river water quality and the water environment improvement is determined, including: city basic data, source point source mixed into the urban rainwater drainage system, urban non-point source pollution overflow into the river, municipal rainwater access to sewage, culvert, pollution source discharge into the river, plant facilities, and supplemented by rainwater system node water quality evidence related situation and influence degree of each type of influence factor; Step S104, for each influence factor, determining the investigation content matched with the influence factor, and the investigation information and the investigation method corresponding to each investigation content, respectively; According to each type of influence factor, a plurality of investigation contents matched with the target are determined: The city basic data correspond to oblique photogrammetry data, population and industrial economic data, land status and planning data, river channel occupation building data, historical relics and ancient wood data; The investigation contents corresponding to the situation of the source point source mixing into the urban rainwater drainage system include: collection of domestic pollution sources, collection of industrial pollution sources, wherein: the collection of domestic pollution sources includes: source rainwater pipe and combined pipe network situation, source pollution source situation; the collection of industrial pollution sources includes: industrial pollution source drainage system situation, industrial pollution source related characteristics and discharge situation; the investigation information corresponding to the source rainwater pipe and combined pipe network situation includes but is not limited to: the position of rainwater pipe and combined pipe, the direction of rainwater pipe and the connection well information, pipe diameter, material, buried depth, and other pipe network characteristic information, the investigation information corresponding to the source pollution source situation includes but is not limited to: pollutant attribute, pollutant discharge amount; the investigation information corresponding to the industrial pollution source related characteristics and discharge situation includes but is not limited to: pollutant attribute, pollutant discharge amount; The investigation contents corresponding to the situation of the urban non-point source pollution overflow into the river include: agricultural product markets, open-air catering, vehicle repair, garbage transfer stations, agricultural non-point sources, wherein: the investigation information corresponding to each investigation content of the urban non-point source pollution overflow into the river includes but is not limited to: approximate position of pollution source, pollution nature, non-point source pollution source type, area, red line range, facility situation, external drainage pipe network, internal drainage situation, pollution direction situation, and on-site photos.

[0022] The investigation contents corresponding to the situation of the municipal rainwater access to sewage include: municipal sewage pipe network mis-mixing connection situation, dark connection branch pipe situation, interception well situation, wherein: the investigation information corresponding to the municipal sewage pipe network mis-mixing connection situation and dark connection branch pipe situation includes but is not limited to: mis-mixing point, water source, drainage direction, pipe network size, elevation, pipe material and other basic parameters, the investigation information corresponding to the interception well situation includes but is not limited to: interception pipe and overflow pipe investigation (pipe bottom elevation, pipe diameter), interception well investigation (interception well size, buried depth, etc., weir top elevation of interception weir, weir width, wall top and wall bottom elevation of interception wall, position of side wall, interception multiple).

[0023] The investigation contents corresponding to the culvert include: culvert body situation, culvert discharge situation, culvert siltation situation, wherein: the investigation information corresponding to the culvert body situation includes but is not limited to: body size, spatial position distribution, culvert material, length, width, height, number of chambers (single culvert, double culvert, triple culvert), inner bottom elevation, top elevation, slope, interception weir (including but not limited to weir top elevation, weir width), interception pipe (including but not limited to pipe bottom elevation of interception pipe, pipe diameter), interception wall (including but not limited to wall top and wall bottom elevation, position of side wall), the investigation information corresponding to the culvert discharge situation includes but is not limited to: drainage port type (rainwater, sewage, combined flow, interception), pipe diameter, elevation, size, material of pipe line upstream of the drainage port and the drainage port, and flap door, the investigation information corresponding to the culvert siltation situation includes but is not limited to: water depth in the culvert, siltation depth; The investigation contents corresponding to the pollution source river discharge conditions include: river open channel conditions, river discharge outlet conditions, river bottom mud conditions, and water engineering facilities in the river conditions; wherein: the investigation information corresponding to the river open channel conditions includes but is not limited to the distribution, size, river bottom elevation, normal water level, flood water level of the river, branch flow, open channel, small lake and pond; the investigation information corresponding to the river discharge outlet conditions includes but is not limited to the coordinates, elevation, specification, material, type (sewage, rainwater, combined flow, interception), pipe bottom elevation and water quality and flow of the upstream pipeline and discharge outlet. Whether the drainage outlet has a flap valve, the elevation of the top and bottom of the flap valve, and the material of the flap valve. The investigation information corresponding to the water engineering facilities in the river conditions includes but is not limited to the data of water engineering facilities such as drainage pump stations, sluices and weirs, and the data of water engineering facilities include type, location, belonging street, operation condition and flow information; the investigation information corresponding to the river bottom mud conditions includes but is not limited to: detection of different depth pollutants, and the bottom mud monitoring mainly detects the indexes of silt moisture content, total nitrogen, total phosphorus, heavy metals (copper, zinc, lead, cadmium, nickel, chromium, mercury, arsenic), pH, organic matter, etc. The investigation contents corresponding to the plant station facilities include: operation conditions of sewage treatment plants, operation conditions of pump station facilities, and operation conditions of decentralized treatment facilities; wherein: the investigation information corresponding to the operation conditions of sewage treatment plants includes but is not limited to basic parameters (such as structure size, elevation, pump operation parameters, pipeline size, elevation, etc.) inside the structure, plant operation capacity (including but not limited to service population, design scale, current operation condition, carbon source dosage and dosage position), sewage treatment process (including but not limited to process flow, process pollution load reduction capacity), and pollution load treatment (including but not limited to water quality of each single body into the plant sewage and effluent sewage); the investigation information corresponding to the operation conditions of pump station facilities includes but is not limited to basic parameters (including but not limited to structure size, elevation, pump operation parameters, pipeline size, elevation, etc.) inside the pump body structure, pump station operation capacity (including but not limited to service population, design scale, current operation condition); the investigation information corresponding to the operation conditions of decentralized treatment facilities includes but is not limited to basic parameters (including but not limited to structure size, elevation, pump operation parameters, pipeline size, elevation, etc.), facility operation capacity (including but not limited to service population, design scale, current operation condition), sewage treatment process (including but not limited to process flow, process pollution load reduction capacity), and pollution load treatment (including but not limited to water quality of inflow and effluent); The investigation contents corresponding to the rainwater system node water quality include: source water quality detection data, municipal rainwater system node water quality detection data, river inlet water quality detection data and river water quality detection data; the investigation information corresponding to the source rainwater water quality detection data, municipal rainwater system node water quality detection data, river inlet water quality detection data and river water quality detection data includes but is not limited to chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, water quantity and rainfall quantity indicators at the pipe network site, etc. The investigation method corresponding to the investigation content of the city type basic data includes: field investigation, and information collection investigation; the investigation method corresponding to the investigation content of the source and point source mixed into the urban rainwater drainage system includes: field investigation, and information collection investigation; the investigation method corresponding to the investigation content of the urban non-point source pollution overflow into the river includes: field investigation, and information collection investigation; the investigation method corresponding to the investigation content of the municipal rainwater access to sewage includes: field investigation, information collection investigation, three-dimensional laser, closed-circuit television system (CCTV), pipe periscope (QV), and sonar detection; the investigation method corresponding to the investigation content of the culvert includes: field investigation, information collection investigation, three-dimensional laser, closed-circuit television system (CCTV), and pipe periscope (QV) technology detection; the investigation method corresponding to the investigation content of the pollution source discharge into the river includes: field investigation, information collection investigation, and sediment detection; the investigation method corresponding to the investigation content of the plant and station facility includes: field investigation, information collection investigation, and internal water quality detection of the plant and station; and the investigation method corresponding to the investigation content of the rainwater system node water quality includes: water quality detection.

[0024] In step S106, according to the investigation method corresponding to the influence factor, the investigation information corresponding to each investigation content of the influence factor is investigated respectively to obtain the initial investigation result corresponding to the influence factor; According to the investigation method applied to each investigation content, the investigation result is obtained, a complete set of urban rainwater drainage system data is acquired, which can be used for subsequent operation and maintenance, and provides basic data for carrying out engineering measures with the goal of improving the water environment; The initial investigation result includes: city type basic data investigation result, source and point source mixed into the urban rainwater drainage system investigation result, urban non-point source pollution overflow into the river investigation result, municipal rainwater access to sewage investigation result, culvert investigation result, pollution source discharge into the river investigation result, plant and station facility investigation result, and rainwater system node water quality investigation result.

[0025] Specifically, the investigation information corresponding to each investigation content of the city type basic data is investigated by using the investigation method corresponding to the city type basic data to obtain the city type basic data investigation result. The obtained city type basic data investigation result includes but is not limited to urban oblique photogrammetry result, population economic and industrial economic data result, land use and planning statistical result, river channel occupation building distribution result, historical relic and ancient tree distribution survey result, and the result form includes but is not limited to Excel, CAD, text and the like, such as urban oblique photogrammetry plan, population economic and industrial economic survey table, land use and planning statistical chart, river channel occupation building distribution chart, and historical relic and ancient tree distribution survey chart.

[0026] The source point source mixed into the urban rainwater drainage system is checked by using the corresponding checking method of the source point source mixed into the urban rainwater drainage system, and the checking information corresponding to each checking content of the source point source mixed into the urban rainwater drainage system is checked to obtain the checking result of the source point source mixed into the urban rainwater drainage system. The checking result of the source point source mixed into the urban rainwater drainage system includes but is not limited to: point source pollution distribution result, drainage unit drainage pipe network result, industrial wastewater characteristic investigation result, industrial wastewater discharge investigation result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: point source pollution distribution chart, drainage unit pipe network system chart, industrial wastewater investigation system chart, and industrial wastewater investigation statistical table. The pollution source leakage and mixing into the river can be judged combined with the result, and the basic information for developing measures such as supplementing the sewage pipe network is provided, so as to avoid the pollution source into the river affecting the river water quality.

[0027] The city surface source pollution overflow into the river situation is checked by using the corresponding checking method of the city surface source pollution overflow into the river situation, and the checking information corresponding to each checking content of the city surface source pollution overflow into the river situation is checked to obtain the checking result of the city surface source pollution overflow into the river situation. The checking result of the city surface source pollution overflow into the river situation includes but is not limited to: surface source pollution distribution result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: surface source pollution distribution chart and surface source pollution statistical table. The surface source pollution into the river situation can be judged combined with the result, and the basic information for developing measures such as collecting surface source pollution in the rainy season is provided, so as to avoid the pollution source into the river affecting the river water quality.

[0028] The municipal rainwater access to sewage situation is checked by using the corresponding checking method of the municipal rainwater access to sewage situation, and the checking information corresponding to each checking content of the municipal rainwater access to sewage situation is checked to obtain the checking result of the municipal rainwater access to sewage situation. The checking result of the municipal rainwater access to sewage situation includes but is not limited to: rain, sewage drainage pipe network result, wrong mixing investigation result, interception system investigation result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: rain, sewage drainage pipe network distribution chart, wrong mixing distribution chart, wrong mixing statistical table, interception system distribution chart and interception system investigation table. The sewage mixing into the river and the interception system leading to the sewage into the river situation can be judged combined with the result, and the basic information for developing measures such as rainwater and sewage wrong mixing reconstruction and interception system reconstruction is provided, so as to avoid the pollution source into the river affecting the river water quality.

[0029] The corresponding investigation method of the culvert is adopted to investigate the investigation information corresponding to each investigation content of the culvert, and the culvert investigation result is obtained; the culvert investigation result includes but is not limited to: culvert investigation result, culvert siltation investigation result, culvert outlet investigation result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: culvert distribution map, culvert size statistical table, culvert siltation investigation chart, culvert outlet distribution map, and culvert outlet statistical table; the final river entry of the sewage culvert into the rainwater culvert can be judged combined with the result, and basic information is provided for developing culvert outlet regulation and other measures, so as to avoid the influence of sewage into the river on the water quality of the river.

[0030] The corresponding investigation method of the pollution source river discharge situation is adopted to investigate the investigation information corresponding to each investigation content of the pollution source river discharge situation, and the pollution source river discharge situation investigation result is obtained; wherein, the pollution source river discharge situation investigation result includes but is not limited to: river open channel result, river outlet investigation result, outlet tracing result, river bottom mud detection result, and river water conservancy facility investigation result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: river open channel distribution map, river outlet and upstream pipeline distribution map, river outlet statistical table, river sewage and combined outlet pollution source discharge path diagram, river bottom mud detection analysis diagram and report, and river water conservancy facility distribution map and statistical table; the pollution direct discharge or combined discharge into the river and the water conservancy facility operation capacity situation can be judged combined with the result, and basic information is provided for developing sewage, combined outlet regulation, pump gate transformation or water conservancy scheduling rule change and other measures, so as to avoid the influence of sewage into the river on the water quality of the river.

[0031] The corresponding investigation method of the plant station facility is adopted to investigate the investigation information corresponding to each investigation content of the plant station facility, and the plant station facility investigation result is obtained; the plant station facility investigation result includes but is not limited to: plant station operation situation result, and the result form includes but is not limited to Excel, text and the like, such as: plant station operation situation report, plant station plane distribution map, and plant station process flow chart; the sewage treatment capacity and treatment standard situation can be judged combined with the result, and basic information is provided for developing sewage plant transformation and other measures, so as to avoid the insufficient operation capacity of the sewage plant leading to the influence of sewage into the river on the water quality of the river.

[0032] The corresponding investigation method of the rainwater system node water quality is adopted to investigate the investigation information corresponding to each investigation content of the rainwater system node water quality, and the rainwater system node water quality investigation result is obtained; the rainwater system node water quality investigation result includes but is not limited to: present water quality detection result, and the result form includes but is not limited to Excel, CAD, text and the like, such as: present water quality distribution map, water quality data monitoring table, and dry season water quality and quantity distribution map; the approximate position of the pollution source can be judged combined with the result, and basic information is provided for developing pollution source collection, so as to avoid the influence of pollution source missing into the river on the water quality of the river.

[0033] The results of the investigation can form a map of the rainwater pipe network system and a database of the rainwater drainage system, and obtain the pollution sources from the pollution sources affecting the water quality of the river to the end of the river drainage, such as missing connection, wrong mixed connection, interception, hidden connection, overflow into the river, and form related investigation results. Provide basic data for subsequent measures to improve water environment, such as filling in blank areas from source to end, wrong mixed connection reconstruction, overflow pollution control, interception system reconstruction, inventory pipe network reconstruction, gate station reconstruction, water conservancy scheduling rule update, and plant facility reconstruction. The water quality of the rainwater system node can also form the basic data of the water quality of the existing pipe network system under different time periods and working conditions, analyze the change gradient of the pipe network pollution into the river in dry season and rainy season, and support the investigation results of the pollution load into the river point, find out the location of the pollution source, and comprehensively analyze the pollution source into the river. Provide support for the stripping of the pollution source into the river. Provide a strong basis for the effect analysis before and after the project, and dynamically adjust the engineering measures as the basis; Step S108, analyzing each initial investigation result to obtain engineering analysis results for improving water environment in plain cities. According to the analysis of the investigation results, the relevant conclusions are obtained, the engineering data are fused and scientifically analyzed and verified, and a set of analysis conclusions consistent with objective facts are formed; According to the analysis of the city type basic data investigation results, the total amount of urban pollution load is obtained; according to the analysis of the investigation results of the mixing of source points into the urban rainwater drainage system, the missing connection point source pollution load analysis, the entry into the plant and the river point source pollution load analysis, and the industrial pollution load analysis are obtained; according to the analysis of the investigation results of the overflow of urban non-point source pollution into the river, the analysis of the dry and rainy season non-point source pollution into the plant and the river is obtained; according to the analysis of the investigation results of the municipal rainwater connection into the sewage, the wrong connection point pollution load analysis, the hidden connection point pollution load analysis, and the overflow into the river pollution source analysis are obtained; according to the analysis of the investigation results of the hidden culvert, the culvert pollution load analysis and the present bottom mud pollution load release analysis are obtained; according to the analysis of the investigation results of the pollution source drainage into the river, the river source pollution load release analysis, the river pollution load analysis, and the river water environment capacity analysis are obtained; according to the analysis of the investigation results of the plant facility, the dry and rainy season plant operation capacity analysis and the dry and rainy season plant concentration analysis are obtained; according to the analysis of the investigation results of the water quality of the rainwater system node, the dry and rainy season drainage system water quality and quantity analysis are obtained; Finally, the above analysis is fused, the city class module is used for analyzing the total pollution load of each region of the city, the plant station facility module is used for analyzing the influent concentration of the sewage treatment plant, the operation capacity and the pollution load reduction, the total pollution load distribution of the city is analyzed, the total pollution load distribution of the city and the river pollution load analysis data are judged, the pollution source into the plant and into the river load analysis in dry and rainy seasons is obtained, the river water dynamic condition is analyzed by using the pollution source discharge into the river condition, the river water environmental capacity under different working conditions is judged, and the city water regulation influence analysis data is formed to obtain the city water regulation influence analysis, the pollution load of each type of the city is analyzed by using the source point source mixing into the city rainwater drainage system, the city non-point source pollution overflow into the river, the municipal rainwater access to the sewage, and the culvert condition, the river pollution load analysis, the comparison of the pollution into the river and the water environmental capacity, the water environmental capacity and the pollution load into the river comparison analysis data are formed, the water environmental capacity and the pollution load into the river comparison analysis, the dry season and rainy season drainage system water quality and quantity analysis are obtained, and the subsequent can improve the transformation measures according to the river pollution load stripping degree and the key stripping area and position.

[0034] The investigation data is used as the research data for improving the water environment of the city water system, the regional pollution load into the river pollution characteristics are analyzed according to the characteristics of each city, the method basis is provided for the subsequent similar research project, and the stripping direction of the pollution source into the river in the dry and rainy seasons of each type of city is effectively determined.

[0035] The corresponding investigation results and investigation conclusions are obtained according to the above steps, and finally a set of investigation method for improving the water quality of the river is formed.

[0036] The method confirms the investigation content according to various influencing factors, finds out the reasons for poor river water quality, and formulates a systematic investigation, which is not a large and wide or local investigation. The investigation data is more systematic, more targeted, and realizes effective investment; the investigation results of the above projects are used to form a set of engineering data conversion research and analysis results in the field of water environment, form a set of investigation method, provide effective scientific basis for developing engineering measures to improve the water environment, effectively determine the stripping direction of the pollution source into the river in the dry and rainy seasons of each type of city, provide guidance for the subsequent similar research project, provide a large amount of engineering supporting data for related scientific research work, effectively integrate related field scientific research work and practical data, and effectively guide the direction of related field scientific research.

[0037] Reference Figure 2A system diagram of a method for checking out a plain city water environment improvement target, according to a city water system improvement purpose module 1, confirming and deducing existing influencing factors module 2, developing system checking out content module 3; using the checking out method module 4 to check out, according to the checking out result output checking out achievement module 5, synchronously carrying out checking out data statistical analysis module 6, carrying out city water system analysis module 7, finally combining the analysis result to obtain the key work and using the output engineering practice module 8 to output the engineering; the city water system improvement purpose module 1 is a river water quality improvement module 9, and a river pollution source investigation 10 is carried out. This diagram shows various influencing factors that need to be checked out, each influencing factor corresponds to checking out content, checking out information, and corresponding checking out methods to obtain corresponding checking out achievements. The checking out achievements of each influencing factor are analyzed to obtain related conclusions, the city rainwater drainage system is investigated, the visualization diagram of the drainage network is obtained, which is used as supporting data for river water quality improvement measures, and a set of checking out methods for river water quality improvement is formed. For details, please refer to the related description in the foregoing embodiments, which will not be repeated here.

[0038] This way can form a system analysis of the checking out results, and provide a targeted and powerful argument for the implementation of the work. According to the river water quality improvement module purpose, the city river pollution load distribution is investigated, and the problem of poor river water quality is found out, which provides essential basis for reducing river pollution load and other engineering measures; the system checking out for the purpose of city water system improvement is not large and wide or local checking out, the checking out data is more systematic and more targeted, and effective investment is achieved; the underground drainage system is investigated during the rapid expansion of the city, and the problems of pollution source collection omission, rain season overflow pollution into the river, sewage misconnection into the river, and station operation are investigated, the city water system relationship is clarified, the city water system operation problem is found out, and the basis for building a perfect city rainwater and sewage separation system is provided; a complete current city rainwater system database is formed, including city basic data, source drainage collection system, city surface source pollution overflow into the river, process transmission municipal pipe culvert system, end rainwater drainage river and sewage into plant system, river bottom mud pollution distribution, and station operation, etc., which provides present situation data support for later city water system construction and improvement, city reconstruction and updating, etc.

[0039] This way responds to the technical points of the relevant department's notice on strengthening the construction and operation and maintenance of city domestic sewage pipe network, investigates the city rainwater drainage system, effectively analyzes the city water system problem, and is the basis for the improvement of existing city water system related facilities and the foundation step for expanding effective city investment.

[0040] In summary, the method can produce the following beneficial effects: (1) The method is a systematic investigation for the purpose of improving urban water environment. According to the purpose of river water quality improvement module, the distribution of urban pollution load into river is found out, the problem of poor river water quality is found out, and a set of investigation method for the purpose of water environment improvement is formed; (2) The method finds out the problems of the underground drainage system in the process of urban rapid expansion, such as pollution source collection omission, rain season overflow pollution into river, sewage misconnection into river, and plant operation problems, which affect the river water quality. The method provides basic data for the purpose of water environment improvement, makes the related measures more targeted and accurate to solve the problems, and expands the effective investment.

[0041] (3) The method obtains the basic data of urban rainwater drainage system, forms a set of visualized diagram and complete present situation of urban rainwater system database, including city basic data, source drainage collection system, urban non-point source pollution overflow into river, process transfer municipal pipe culvert system, end rainwater drainage river and sewage into plant system, river sediment pollution distribution, plant operation, etc. The method provides complete present situation data support for subsequent urban rainwater drainage system operation and management or urban renewal measures.

[0042] (4) The method combines with engineering department to form targeted data analysis results, provides basis for present situation understanding and post engineering practice effect analysis, provides huge engineering supporting data for water environment improvement field research work, effectively integrates water environment improvement field research work and engineering data, and effectively guides water environment improvement field research direction as basis.

[0043] (5) The water quality detection data reverse statistical analysis module is for rainwater dry and branch pipe rainwater quality detection, forms the basic data of present situation pipe network system water quality under different time periods and working conditions, analyzes the change gradient of rainwater pipe network water quality in dry season and rain season, reversely demonstrates the pollution load into river point, finds out the pollution source position, and improves the investigation accuracy through mutual supporting of forward investigation and reverse water quality detection. The method provides strong basis for engineering before and after effect analysis, as dynamic adjustment of engineering measures basis, and forms a set of urban rainwater drainage system research data; (6) The method establishes investigation data statistical analysis and urban rainwater system analysis module, uses the investigation data as research data for urban sewage system water environment improvement, analyzes regional pollution load into river pollution characteristics according to the characteristics of each city, provides method basis for subsequent similar research engineering, and effectively determines the stripping direction of various urban dry and rain season into river pollution sources.

[0044] (7) The method can be applied to the current problem investigation with the goal of improving the water environment, the investigation of the urban rainwater drainage system, the preliminary investigation of the engineering data support of scientific research in related fields, the preliminary investigation of the measures related to the improvement of the water environment, the preliminary investigation of the urban rainwater drainage system reconstruction or urban renewal, and the preliminary investigation of the related fields such as the improvement of the water environment.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for investigating and improving the water environment in plain cities, characterized in that: The method comprises: With the goal of improving river water quality, the authors deduce multiple factors influencing the quality of urban water environments. These factors include: basic city data, point source mixing into the urban rainwater drainage system, urban non-point source pollution overflow into rivers, municipal rainwater access to sewage, culverts, pollution source discharge into rivers, and plant and station facilities. The factors are supplemented by water quality at rainwater system nodes to demonstrate their relevance and degree of impact. For each of the influencing factors, determine the investigation content that matches the influencing factor, as well as the investigation information and investigation method corresponding to each of the investigation contents; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation results corresponding to the influencing factor; wherein, the initial investigation results include: the investigation results of basic urban data, the investigation results of the mixing of point sources into the urban rainwater drainage system, the investigation results of the overflow of urban non-point source pollution into the river, the investigation results of the connection of municipal rainwater to sewage, the investigation results of culverts, the investigation results of the discharge of pollution sources into the river, the investigation results of plant and station facilities, and the investigation results of water quality at rainwater system nodes; Analyze each of the initial investigation results to obtain engineering analysis results for improving the water environment in plain cities.

2. The method according to claim 1, characterized in that The investigation contents of the basic urban data include: oblique photogrammetry data, population and industrial economic data, land status and planning data, data on buildings encroaching on river channels, and data on historical relics and ancient trees; the investigation methods of the basic urban data include: on-site investigation and fund collection survey; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the investigation method corresponding to the city-class basic data, investigation information corresponding to each investigation content of the city-class basic data is investigated to obtain the city-class basic data investigation results: wherein the city-class basic data investigation results include: urban oblique photogrammetry results, population and industrial economic data results, land use and planning statistics results, distribution results of buildings encroaching on river channels, and historical relics and ancient tree distribution census results. The city-class basic data investigation results may be in the form of, but not limited to, Excel, CAD, and text; Perform data analysis on the city-level basic data investigation results to obtain city-level basic data analysis results; wherein the corresponding city-level basic data analysis results include but are not limited to: total urban pollution load analysis.

3. The method according to claim 1, characterized in that The investigation contents corresponding to the situation of point sources mixing into the urban rainwater drainage system include: the collection of domestic pollution sources and industrial pollution sources; wherein, the collection of domestic pollution sources includes: the source rainwater pipe and combined pipe network, the source pollution source; the collection of industrial pollution sources includes: the industrial pollution source drainage system, the relevant characteristics and emission conditions of the industrial pollution sources; the investigation information corresponding to the collection of domestic pollution sources includes but is not limited to: the location of the rainwater pipe and combined pipe, the direction of the rainwater pipe and the connection well information, pipe diameter, material, burial depth, pipe network characteristic information related to the accessories, pollutant properties, and pollutant emission; the investigation methods corresponding to the situation of point sources mixing into the urban rainwater drainage system include: on-site investigation and fund collection survey; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Adopting the investigation method corresponding to the situation of the source point source mixing into the urban rainwater drainage system, investigating the investigation information corresponding to each investigation content of the situation of the source point source mixing into the urban rainwater drainage system, and obtaining the investigation results of the situation of the source point source mixing into the urban rainwater drainage system: wherein, the investigation results of the situation of the source point source mixing into the urban rainwater drainage system include: point source pollution distribution results, drainage unit drainage network results, industrial wastewater characteristic investigation results, industrial wastewater discharge investigation results, and the results format of the investigation results of the situation of the source point source mixing into the urban rainwater drainage system includes but is not limited to: Excel, CAD, text; Data analysis is performed on the results of the investigation of the source point source mixing into the urban rainwater drainage system to obtain the corresponding first data analysis results; wherein, the first data analysis results include: leakage point source pollution load analysis, factory and river point source pollution load analysis, and industrial pollution load analysis.

4. The method according to claim 1, wherein The investigation contents corresponding to the overflow of urban non-point source pollution into the river include: farmers' markets, open-air restaurants, auto repair shops, garbage transfer stations, and agricultural non-point sources. The investigation information corresponding to each of the investigation contents of the overflow of urban non-point source pollution into the river includes but is not limited to: location of the pollution source, nature of the pollution, type of non-point source pollution source, area, red line range, facility conditions, external drainage network, internal drainage conditions, pollution destination, and on-site photos. The investigation methods corresponding to the overflow of urban non-point source pollution into the river include: on-site investigation and fund collection survey. According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the investigation method corresponding to the urban non-point source pollution overflow into the river, the investigation information corresponding to each investigation content of the urban non-point source pollution overflow into the river is investigated to obtain the urban non-point source pollution overflow into the river investigation results; wherein the urban non-point source pollution overflow into the river investigation results include: non-point source pollutant distribution results; the results of the urban non-point source pollution overflow into the river are in the form of including but not limited to: Excel, CAD, and text; Data analysis is performed on the results of the investigation of the urban non-point source pollution overflow into the river to obtain a corresponding second data analysis result; wherein, the second data analysis result includes: analysis of the non-point source pollution load entering the factory and the river in the dry and rainy seasons.

5. The method according to claim 1, wherein The inspection contents corresponding to the municipal rainwater connection to sewage include: the municipal sewage network mis-connection, concealed branch pipe connection, and interception well condition; the inspection information corresponding to the municipal sewage network mis-connection and concealed branch pipe condition includes but is not limited to: the mis-connection point, water source, drainage direction, pipe network size, elevation, and pipe material; the inspection information corresponding to the interception well condition includes but is not limited to: interception pipe and overflow pipe investigation, interception well investigation; the inspection methods corresponding to the municipal rainwater connection to sewage include: on-site investigation, collection survey, 3D laser, closed-circuit television system, pipeline periscope, and sonar detection; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the investigation method corresponding to the municipal rainwater connection to sewage situation, the investigation information corresponding to each investigation content of the municipal rainwater connection to sewage situation is investigated to obtain the municipal rainwater connection to sewage situation investigation results; the municipal rainwater connection to sewage situation investigation results include: rainwater and sewage drainage pipe network results, wrong mixed connection investigation results, and interception system investigation results; the corresponding results of the municipal rainwater connection to sewage situation investigation results include but are not limited to: Excel, CAD, text; Data analysis is performed on the results of the investigation into the connection of municipal rainwater to sewage to obtain corresponding third data analysis results; wherein, the third data analysis results include: wrong connection point pollution load analysis, dark connection point pollution load analysis, and overflow into river pollution source analysis.

6. The method according to claim 1, characterized in that The inspection contents corresponding to the culvert include: the condition of the culvert body, the condition of the culvert outlet, and the condition of the culvert siltation; the inspection information corresponding to the culvert body condition includes but is not limited to: the body size, spatial location distribution, culvert material, length, width, height, number of culvert chambers (, inner bottom elevation, top elevation, slope, intercepting weir, intercepting pipe, intercepting wall); the inspection information corresponding to the culvert outlet condition includes but is not limited to: the type of drainage outlet, the diameter, elevation, size, material of the drainage outlet and the upstream pipeline of the drainage outlet, and the drainage outlet flap; the inspection information corresponding to the culvert siltation condition includes but is not limited to: the water depth in the culvert and the siltation depth; the inspection methods corresponding to the culvert include: on-site investigation, collection survey, 3D laser, closed-circuit television system, pipeline periscope; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the inspection method corresponding to the hidden culvert, the inspection information corresponding to each inspection content of the hidden culvert is inspected to obtain the hidden culvert inspection results; the hidden culvert inspection results include: hidden culvert inspection results, hidden culvert siltation inspection results, and hidden culvert outlet inspection results; the output format of the hidden culvert inspection results includes but is not limited to: Excel, CAD, and text; Data analysis is performed on the culvert inspection results to obtain corresponding fourth data analysis results; the fourth data analysis results include: culvert pollution load analysis and current sediment pollution load release analysis.

7. The method according to claim 1, characterized in that The inspection contents corresponding to the pollution source discharge into the river include: the open channel conditions of the river, the river outlet conditions, the river bottom sediment conditions, and the hydraulic facilities in the river; the inspection information corresponding to the open channel conditions of the river includes but is not limited to: the distribution, size, river bottom elevation, normal water level, and flood level of the river, tributaries, open channels, and small lakes; the inspection information corresponding to the river outlet conditions includes but is not limited to: the coordinates, elevation, specifications, materials, types, pipe bottom elevations and water quality flow of the upstream pipelines and outlets, whether there is a flap gate at the outlet, and the top and bottom elevations of the flap gate, and the material of the flap gate; the investigation information corresponding to the hydraulic facilities in the river includes but is not limited to: hydraulic facility data of drainage pump stations, sluices and weirs; the hydraulic facility data includes: type, location, street location, operation status, flow rate, and pollutants at different depths in the river; the investigation information corresponding to the river sediment includes but is not limited to: silt moisture content, total nitrogen, total phosphorus, heavy metals, pH, and organic matter of pollutants at different depths; the investigation methods corresponding to the pollution source discharge into the river include: on-site investigation, collection survey, and sediment testing; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the investigation method corresponding to the pollution source discharge into the river, the investigation information corresponding to each investigation content of the pollution source discharge into the river is investigated to obtain the pollution source discharge into the river investigation results; wherein the pollution source discharge into the river investigation results include: river and creek open channel investigation results, river and creek outlet investigation results, outlet source tracing results, river and creek bottom sediment detection results, and in-river hydraulic facility investigation results; the pollution source discharge into the river investigation results may be in the form of, but not limited to, Excel, CAD, or text; Data analysis is performed on the results of the investigation of the pollution source discharge into the river to obtain the corresponding fifth data analysis result; the fifth data analysis result includes: analysis of the release of endogenous pollution load in the river, analysis of the pollution load entering the river, and analysis of the water environment capacity of the river.

8. The method according to claim 1, characterized in that The inspection contents corresponding to the plant and station facilities include: the operation status of the sewage treatment plant, the operation status of the pump station facilities, and the operation status of the distributed treatment facilities; the inspection information corresponding to the operation status of the sewage treatment plant includes but is not limited to: the basic internal parameters of the structure, the plant and station operation capacity, the sewage treatment process, and the pollution load treatment; the inspection information corresponding to the operation status of the pump station facilities includes but is not limited to: the basic internal parameters of the pump body structure and the pump station operation capacity; the inspection information corresponding to the operation status of the distributed treatment facilities includes but is not limited to: the basic parameters of the structure, the facility operation capacity, the sewage treatment process, and the pollution load treatment; the inspection methods corresponding to the plant and station facilities include: on-site investigation, capital collection survey, and water quality testing inside the plant and station; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the inspection method corresponding to the plant and station facilities, the inspection information corresponding to each inspection content of the plant and station facilities is inspected to obtain the plant and station facility inspection results; the plant and station facility inspection results include: plant and station operation status results; the plant and station facility inspection results are in the form of Excel or text; Perform data analysis on the plant and station facility inspection results to obtain a corresponding sixth data analysis result; the sixth data analysis result includes: plant and station operation capacity analysis in the dry season and rainy season, and plant inlet concentration analysis in the dry season and rainy season.

9. The method according to claim 1, characterized in that The inspection contents corresponding to the water quality of the rainwater system nodes include: source rainwater quality test data, municipal rainwater system node water quality test data, river inlet water quality test data, and river and stream water quality test data; the inspection information corresponding to the source rainwater quality test data, the municipal rainwater system node water quality test data, the river inlet water quality test data, and the river and stream water quality test data includes: chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, water volume, and rainy season rainfall indicators at the pipe network; the inspection methods corresponding to the water quality of the rainwater system nodes include: water quality testing; According to the investigation method corresponding to the influencing factor, the investigation information corresponding to each investigation content of the influencing factor is investigated respectively to obtain the initial investigation result corresponding to the influencing factor, including: Using the inspection method corresponding to the water quality of the rainwater system node, the inspection information corresponding to each inspection content of the water quality of the rainwater system node is inspected to obtain the rainwater system node water quality inspection results; the rainwater system node water quality inspection results include: current water quality detection results; the output format of the rainwater system node water quality inspection results includes but is not limited to: Excel, CAD, text; Data analysis is performed on the water quality inspection results of the rainwater system nodes to obtain the corresponding seventh data analysis results; the seventh data analysis results include: water quality and water quantity analysis of the drainage system in the dry season and rainy season.

10. The method according to any one of claims 2 to 9, characterized in that: The engineering analysis results obtained based on each of the initial investigation results include: analysis of pollution loads entering factories and rivers in dry and rainy seasons, analysis of water environment capacity and pollution load entering rivers, analysis of water quality and quantity of drainage systems in dry and rainy seasons, and analysis of the impact of urban hydraulic scheduling.

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