Regenerated water resource supply management method and system for urban water network

Abstract

The invention discloses a regenerated water resource supply management method and system for an urban water network, and relates to the technical field of water resource supply management. Comprising the following steps: module setting: setting a life module, an irrigation module and a factory module, and delineating a range based on the life module, the irrigation module and the factory module to obtain a life range item, an irrigation range item and a factory range item; and node setting: based on the living range item, the irrigation range item and the factory range item, respectively setting nodes through a setting method to obtain at least two living node items, at least two irrigation node items and at least two factory node items. According to the method, firstly, a city is divided into a life module, an irrigation module and a factory module, a plurality of nodes are arranged, regional supply is established based on life node items, irrigation node items and factory node items, the regional supply is connected with a city supply mechanism, supply regions are connected with one another, and the regional supply supplies water to supply ranges.

Description

Technical Field

[0001] The present invention relates to the technical field of water resource supply management, and in particular to a method and system for managing the supply of recycled water resources in an urban water network. Background Art

[0002] Urban recycled water resources refer to urban sewage or wastewater that can be reused after treatment and purification. These water resources usually come from domestic sewage, industrial wastewater or rainwater, and undergo multiple treatment processes such as physical, chemical and biological treatment processes to make them meet certain water quality standards to meet specific reuse needs. Urban water network refers to a comprehensive system that uses water resources for water supply, drainage and water environment management in urban areas. It includes water supply pipelines, drainage pipelines and rainwater collection systems. These systems are interconnected to form an efficient and sustainable urban water resources management network.

[0003] The township water resource asset management audit analysis system and method with patent publication number CN114418793B uses urbanization water resource assets, agricultural irrigation water resource assets, water resource assets of water conservancy projects, and river and lake water resource assets in the township water resource asset management audit analysis as the main indicators for verification, and considers the impact of natural climate change cycles on township water resource assets when conducting corresponding audit verification. Therefore, the water resource asset-related data and the natural climate change cycle are bound together, and the township water resource asset audit analysis is conducted on this basis, and the audit analysis results obtained are more accurate and reliable.

[0004] When the above and similar technical solutions are used to manage the supply of water resources, when a part of the water pipeline network is damaged and needs to be repaired, it will cause a temporary water outage at the demand point connected to the water pipeline network, thereby affecting normal life and production. In addition, due to the different supply objects of water resources, the quality requirements of water resources are also different. For example, domestic water requires water quality to meet certain standards, while factory water and irrigation water have different requirements for water quality. When purifying water resources, the supply agency cannot purify the water resources differently according to different standard requirements, and can only purify the water resources according to unified standards and discharge them uniformly, without the option of on-demand configuration. Summary of the invention

[0005] The purpose of the present invention is to provide a method and system for managing the supply of recycled water resources in an urban water network to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a method and system for managing the supply of recycled water resources in an urban water network, comprising:

[0007] Module setting: Set the life module, irrigation module and factory module, and define the scope based on the life module, irrigation module and factory module to obtain the life scope item, irrigation scope item and factory scope item;

[0008] Node setting: Based on the life scope item, irrigation scope item and factory scope item, nodes are set respectively through setting methods to obtain at least two life node items, irrigation node items and factory node items;

[0009] Water quality regulation: Based on the water quality demand standard of the living scope item, the living standard item is obtained, the water quality demand standard of the irrigation scope item and the factory scope item is obtained, and the irrigation standard item and the factory standard item are obtained. The water quality purification degree of the urban supply agency is adjusted through the adjustment method, achieving the effect of on-demand configuration and improving the flexibility of water resource regeneration;

[0010] Regional supply: Supply areas are established based on life node items, irrigation node items and factory node items. The supply areas are connected to the city supply agencies and are connected to each other. Life node items, irrigation node items and factory node items supply water to the supply areas respectively. When the first target area is out of water, the second target area is searched through the search method to branch water supply to the first target area, so as to ensure the normal life and production of the supply area;

[0011] The search method comprises:

[0012] Step 1: Range setting, setting a first search range, obtaining a first range item, taking the node position of the first target area as the starting point, obtaining the node information within the first range item, and obtaining a node quantity set;

[0013] Step 2: Node judgment: Based on the node quantity set, determine whether the nodes in the node quantity set meet the supply standard, set the nodes that meet the supply standard as demand nodes, and obtain the demand node set;

[0014] Step 3: Gap judgment, obtain the water shortage demand of nodes in the first target area, obtain the demand item, obtain the distance data between the nodes in the demand node set and the nodes in the first target area, and obtain the distance ranking item;

[0015] Step 4: Gap filling: Based on the distance sorting item, set the filling threshold, and select the target number of nodes based on the filling threshold until the filling threshold meets the requirement.

[0016] Furthermore, the supply standard includes supply quantity, and the node judgment method includes: standard setting, setting the minimum conservation quantity, obtaining the residual water quantity of nodes in the node set, judging whether the residual water quantity meets the minimum conservation quantity, when the residual water quantity of the node does not meet the minimum conservation quantity, judging the target node as a screening node, when the residual water quantity of the node meets the minimum conservation quantity, judging the target node as a demand node, and obtaining a demand node set.

[0017] Furthermore, the supply standard includes upper and lower level standards, and the node judgment method includes:

[0018] S1: Standard calibration, based on life node items, irrigation node items and factory node items, calibrating the superior-subordinate relationship, where life node items are the highest and factory node items are the lowest;

[0019] S2: Superior-subordinate judgment, obtain the attribute information of the nodes in the first target area and the nodes in the node concentration, and judge the superior-subordinate relationship of the node attributes. When the attribute information of the nodes in the node concentration is lower than the node attribute information of the first target area, the target node is judged to be a eliminated node. When the attribute information of the nodes in the node concentration is higher than the node attribute information of the first target area, the target node is judged to be a demand node, and the demand node set is obtained.

[0020] Furthermore, the module setting method includes:

[0021] M1: module definition, based on the life module, irrigation module and factory module, the module definition is calibrated respectively to obtain the life definition item, irrigation definition item and factory definition item;

[0022] M2: Scope delineation. Based on life definition items, irrigation definition items and factory definition items, multiple scopes are delineated respectively to obtain scope delineation items, and the scope delineation items are divided to obtain life scope items, irrigation scope items and factory scope items.

[0023] Furthermore, the setting method includes:

[0024] N1: Range division, setting a division threshold, and dividing the living range item, irrigation range item, and factory range item based on the division threshold, to obtain multiple living division items, irrigation division items, and factory division items;

[0025] N2: Location selection, setting selection criteria, based on the selection criteria, standard division of life division items, irrigation division items and factory division items, selecting division points as target points, obtaining target point sets, setting nodes based on the target point sets, obtaining life node items, irrigation node items and factory node items.

[0026] Furthermore, the node includes at least one water storage device, which is connected to the city supply agency for supplying water to the water storage device. The water storage device is also connected to a water pipeline within the node for transporting water resources stored in the water storage device.

[0027] Furthermore, the method for obtaining the irrigation standard items and the factory standard items includes:

[0028] X1: first sampling point setting, based on the irrigation scope item and the factory scope item, at least two first sampling points are set respectively to obtain the irrigation sampling item and the factory sampling item;

[0029] X2: Questionnaire sampling, based on the irrigation sampling items and the factory sampling items, obtain water quality requirements, and obtain the first irrigation demand item and the first factory demand item;

[0030] X3: Demand average, obtain the average value of the first irrigation demand item and the first factory demand item, obtain the irrigation average item and the factory average item, use the irrigation average item and the factory average item as the water quality demand standard for the irrigation scope item and the factory scope item, and obtain the irrigation standard item and the factory standard item.

[0031] Furthermore, the method for obtaining the irrigation standard items and the factory standard items also includes: setting a second sampling point, setting at least two second sampling points based on the irrigation scope items and the factory scope items respectively, obtaining water quality requirements based on the sampling results of the second sampling points respectively, obtaining second irrigation demand items and second factory demand items, sorting the second irrigation demand items and the second factory demand items to obtain irrigation sorting items and factory sorting items, selecting the first data of the irrigation sorting items and the factory sorting items, and using the first data as the water quality requirement standard for the irrigation scope items and the factory scope items respectively, to obtain the irrigation standard items and the factory standard items.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The recycled water resource supply management method and system of the urban water network first divides the city into a living module, an irrigation module and a factory module, and according to the judgment of the urban area, respectively delineates the scope of the living module, the irrigation module and the factory module to obtain the living scope item, the irrigation scope item and the factory scope item, and respectively sets the living node item, the irrigation node item and the factory node item based on the living scope item, the irrigation scope item and the factory scope item, and respectively establishes regional supply based on the living node item, the irrigation node item and the factory node item, and the regional supply is connected with the urban supply mechanism, and the supply areas are connected with each other, and the regional supply supplies the supply range with water, and when some of the supply areas are out of water, the remaining supply areas or urban supply mechanisms are searched for branch water supply to ensure the normal life and production in the supply areas.

[0034] At the same time, the hierarchical relationship of regional attributes is obtained. Since the life module has a higher demand for water quality and uses it for daily life, the irrigation module is second and uses it for farmland irrigation, and the factory module has the lowest demand for water quality. Therefore, among the number of nodes obtained within the first search range, when the attribute information of the node is lower than the node attribute information of the first target area, the target node is determined to be a eliminated node; when the attribute information of the node is higher than the node attribute information of the first target area, the target node is determined to be a demand node. The stability of water quality supplied to the region is ensured through the hierarchical supply relationship.

[0035] Moreover, based on the water quality demand standard of the living scope item, the living standard item is obtained, and the water quality demand standards of the irrigation scope item and the factory scope item are obtained separately, and the irrigation standard item and the factory standard item are obtained. According to the living standard item, the irrigation standard item and the factory standard item, the regional supply connected to the urban supply agency is purified separately, realizing the effect of on-demand configuration and improving the flexibility of water resource regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the relationship between module setting, node setting, water quality regulation and regional supply of the present invention;

[0037] Figure 2 It is a schematic diagram of the search method flow of the present invention;

[0038] Figure 3 It is a schematic diagram of node positions of the present invention;

[0039] Figure 4 A schematic diagram of the relationship between the demand node and the screening node of the present invention;

[0040] Figure 5 A schematic diagram of a demand node when the starting point of the present invention belongs to a life scope item node;

[0041] Figure 6 This is a schematic diagram of a demand node when the starting point of the present invention belongs to an irrigation scope item node. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Since the objects of recycled water supply in the city are divided into multiple categories, such as domestic water, irrigation water, factory water, etc., and are supplied uniformly by supply organizations, for example, after purification by a water plant, the water resources are uniformly supplied to water pipelines such as domestic water, irrigation water, and factory water. When a section of the water network fails, the target connected to the water network will be cut off from water. At this time, the failed water network needs to be repaired before the target location can be re-supplied with water. The technical solution provided in the present application first divides the city into multiple modules, and divides the supply objects of urban water resources into multiple levels, namely, living modules, irrigation modules, and factory modules. According to the judgment of the urban area, the scopes of the living modules, irrigation modules, and factory modules are respectively delineated to obtain living scope items, irrigation scope items, and factory scope items. The items set life node items, irrigation node items and factory node items respectively, and regional supplies are established based on the life node items, irrigation node items and factory node items respectively. The regional supplies are connected to the urban supply agency, and the supply areas are connected to each other. The regional supply supplies water to the supply range. When some of the supply areas are out of water, the remaining supply areas or urban supply agencies are searched for branch water supply according to the search method to ensure the normal life and production in the supply area, and based on the water quality demand standard of the living range item, the living standard item is obtained, and the water quality demand standard of the irrigation range item and the factory range item is obtained separately to obtain the irrigation standard item and the factory standard item. According to the living standard item, the irrigation standard item and the factory standard item, the regional supply connected to the urban supply agency is purified separately, thereby achieving the effect of on-demand configuration and improving the flexibility of water resource regeneration.

[0044] like Figure 1-Figure 2As shown, the present invention provides a technical solution: a method and system for managing the supply of recycled water resources of an urban water network, including: module setting: setting a living module, an irrigation module and a factory module, and defining the range based on the living module, the irrigation module and the factory module to obtain a living range item, an irrigation range item and a factory range item; node setting: based on the living range item, the irrigation range item and the factory range item, respectively setting nodes through a setting method to obtain at least two living node items, irrigation node items and factory node items; water quality regulation: based on the water quality demand standard of the living range item, obtaining a living standard item, obtaining the water quality demand standard of the irrigation range item and the factory range item, obtaining an irrigation standard item and a factory standard item, and regulating the water quality purification degree of the urban supply agency through the regulation method, thereby achieving the effect of on-demand configuration and improving the flexibility of water resource regeneration; regional supply: establishing supply areas based on the living node item, the irrigation node item and the factory node item, and the supply areas are connected to the urban supply agency, and the supply areas are mutually connected. The life node item, irrigation node item and factory node item respectively supply water to the supply area. When the first target area is out of water, the second target area is searched by a search method to branch water supply to the first target area to ensure normal life and production in the supply area. The search method includes: step one: range setting, setting the first search range to obtain the first range item, taking the node position of the first target area as the starting point, obtaining the node information in the first range item, and obtaining a node quantity set; step two: node judgment, based on the node quantity set, judging whether the nodes in the node quantity set meet the supply standard, setting the nodes that meet the supply standard as demand nodes, and obtaining a demand node set; step three: gap judgment, obtaining the node water shortage demand of the first target area to obtain the demand item, obtaining the distance data between the nodes in the demand node set and the nodes of the first target area, and obtaining the distance sorting item; step four: gap filling, based on the distance sorting item, setting the filling threshold, selecting the target number of nodes based on the filling threshold, until the filling threshold meets the demand item.

[0045] It should be noted that the city is divided into regions according to the set living modules, irrigation modules and factory modules, and the city is divided into living scope items, irrigation scope items and factory scope items, and multiple nodes are set in the living scope items, irrigation scope items and factory scope items respectively. Since the living modules, irrigation modules and factory modules have different requirements for water quality, the living module has a higher demand for water quality, which is used for daily life, the irrigation module is second, which is used for farmland irrigation, and the factory module has the lowest demand for water quality. According to the water quality requirements of the living modules, irrigation modules and factory modules, the water purification degree of the urban supply agency is adjusted to achieve the effect of on-demand configuration and improve the regeneration flexibility of water resources in the regional supply.

[0046] It should be noted that when performing branch water supply, according to the set first search range, the node position of the first target area where the water outage occurs is taken as the starting point, the node information within the first search range is obtained, and it is determined whether the node can supply the nodes of the first target area. Some nodes that can supply the nodes of the first target area are set as demand nodes, and the distances of the demand nodes from the nodes of the first target area are sorted. First, according to the proximity principle, some nodes are selected to supply the nodes of the first target area.

[0047] The supply standard includes the supply quantity, and the node judgment method includes: standard setting, setting the minimum conservation quantity, obtaining the residual water volume of the nodes in the node quantity set, judging whether the residual water volume meets the minimum conservation quantity, when the residual water volume of the node does not meet the minimum conservation quantity, judging the target node as a screening node, when the residual water volume of the node meets the minimum conservation quantity, judging the target node as a demand node, and obtaining a demand node set.

[0048] It should be noted that since there are multiple nodes in the first scope item, the residual water volume of some nodes may not be able to meet the supply of nodes in the first target area. At this time, the minimum conservation amount is set to 50%. When the residual water volume of the node is lower than the minimum conservation amount, the target node is determined to be a screening node. Conversely, when the residual water volume of the node is higher than the minimum conservation amount, the target node is determined to be a demand node.

[0049] like Figure 3-Figure 4 As shown, in the specific implementation process, a node in a city that serves as a living scope item has a temporary water outage. At this time, taking this node as the starting point, according to the set first search range, it is obtained that there are 10 nodes in the first search range. The 10 nodes belong to the living scope item, the irrigation scope item and the factory scope item respectively. Among these 10 nodes, 6 nodes have residual water volumes above 80%, and two other nodes have residual water volumes between 50% and 80%. The remaining two nodes have residual water volumes below 50%. At this time, the number of demand nodes is 8, and the number of screened nodes is two.

[0050] The supply standard includes superior and subordinate standards, and the node judgment method includes: S1: standard calibration, based on the life node item, irrigation node item and factory node item, calibrate the superior and subordinate relationship, among which the life node item is the highest and the factory node item is the lowest; S2: superior and subordinate judgment, obtain the attribute information of the nodes in the first target area and the nodes in the node concentration, and judge the superior and subordinate relationship of the node attributes. When the attribute information of the nodes in the node concentration is lower than the node attribute information of the first target area, the target node is judged to be a eliminated node. When the attribute information of the nodes in the node concentration is higher than the node attribute information of the first target area, the target node is judged to be a demand node, and a demand node set is obtained.

[0051] It should be noted that due to the different requirements of the life module, irrigation module and factory module on water quality, the life module has a higher demand for water quality, which is used for daily life, followed by the irrigation module, which is used for farmland irrigation, and the factory module has the lowest demand for water quality. Therefore, the superior-subordinate relationship is life node item > irrigation node item > factory node item. Among the number of nodes obtained within the first search range, when the attribute information of the node is lower than the node attribute information of the first target area, the target node is determined to be a eliminated node. When the attribute information of the node is higher than the node attribute information of the first target area, the target node is determined to be a demand node.

[0052] like Figure 5 As shown, in the specific implementation process, a node in a city that is a living scope item has a temporary water outage. At this time, taking this node as the starting point, according to the set first search range, it is obtained that there are 10 nodes in the first search range, and the 10 nodes belong to the living scope item, the irrigation scope item and the factory scope item respectively, and five of them belong to the living scope item, three nodes belong to the irrigation scope item, and two nodes belong to the factory scope item. At this time, the number of required nodes is only five, all of which belong to the nodes of the living scope item.

[0053] like Figure 6 As shown, in the specific implementation process, a node in a city that is an irrigation scope item has a temporary water outage. At this time, taking the node as the starting point, according to the set first search range, it is obtained that there are 10 nodes in the first search range, and the 10 nodes belong to the living scope item, the irrigation scope item and the factory scope item respectively, and five of them belong to the living scope item, three nodes belong to the irrigation scope item, and two nodes belong to the factory scope item. At this time, the number of required nodes is only 8, which belong to the nodes of the living scope item and the irrigation scope item respectively.

[0054] The module setting method includes: M1: module definition, calibrating the module definitions based on the life module, irrigation module and factory module respectively, and obtaining life definition items, irrigation definition items and factory definition items; M2: scope delineation, based on the life definition items, irrigation definition items and factory definition items, delineating multiple scopes respectively, obtaining scope delineation items, and dividing the scope delineation items to obtain life scope items, irrigation scope items and factory scope items.

[0055] It should be noted that the definition of the living module is: residential areas, commercial areas, public service facilities, etc., the definition of the irrigation module is: farmland, green space, parks, landscape areas and other areas that need irrigation, and the definition of the factory module is: industrial parks, manufacturing facilities, etc. According to the definition, the scope is delineated separately, and the city is delineated into living scope items, irrigation scope items and factory scope items.

[0056] The setting method includes: N1: range division, setting a division threshold, and dividing the living range items, irrigation range items and factory range items based on the division threshold to obtain multiple living division items, irrigation division items and factory division items; N2: location selection, setting a selection standard, and based on the selection standard, performing standard division on the living division items, irrigation division items and factory division items, selecting the division points as target points, obtaining a target point set, and setting nodes based on the target point set to obtain living node items, irrigation node items and factory node items.

[0057] It should be noted that the division threshold is set as a square area with a radius of 10km. The living range item, irrigation range item and factory range item are divided according to the division threshold, and the target point is set in the divided area. The target point is the central area of ​​the division threshold, and the node is set at the position of the target point.

[0058] The node includes at least one water storage device, which is connected to the city supply agency for supplying water to the water storage device. The water storage device is also connected to a water pipeline within the node to transport the water resources stored in the water storage device.

[0059] The method for obtaining irrigation standard items and factory standard items includes: X1: first sampling point setting, based on the irrigation scope items and the factory scope items, at least two first sampling points are set respectively to obtain irrigation sampling items and factory sampling items; X2: questionnaire sampling, based on the irrigation sampling items and the factory sampling items, water quality requirements are obtained respectively to obtain the first irrigation demand item and the first factory demand item; X3: demand averaging, obtaining the average value of the first irrigation demand item and the first factory demand item to obtain the irrigation average item and the factory average item, and using the irrigation average item and the factory average item as the water quality requirement standards for the irrigation scope items and the factory scope items to obtain the irrigation standard item and the factory standard item.

[0060] It should be noted that ten sampling points are set in the area of ​​the irrigation scope items and the factory scope items. The sampling content is the demand for water quality. The average value of the water quality demand for the irrigation scope items and the factory scope items is obtained based on the sampling results, and the irrigation standard items and the factory standard items are obtained based on the average value.

[0061] In the specific implementation process, ten sampling points were set in the area of ​​the irrigation scope item to obtain the water quality demand data. The results are shown in Table 1.

[0062] Table 1

[0063]

[0064] As can be seen from Table 1, the results of the ten sampling points within the irrigation range item show that the average values ​​of dissolved solids (TDS) mg / L, salt (chloride) mg / L, pH value, ammonia nitrogen (NH4⁺) mg / L, urea (CO(NH2)2) mg / L, microbial contamination (Escherichia coli) CFU / 100mL, and nitrate (NO3⁻) mg / L are 415, 81, 7.5, 4.3, 10.2, 3, and 19.2, respectively. At this time, the water quality requirements of the irrigation range item are determined based on the results of the average values, and the irrigation standard item is obtained.

[0065] Ten sampling points were set within the area of ​​the factory scope item to obtain the water quality demand data. The results are shown in Table 2.

[0066] Table 2

[0067]

[0068] As can be seen from Table 2, the results of the ten sampling points within the factory scope item show that the average values ​​of dissolved solids (TDS) mg / L, salt (chloride) mg / L, pH value, ammonia nitrogen (NH4⁺) mg / L, urea (CO(NH2)2) mg / L, microbial contamination (Escherichia coli) CFU / 100mL, and nitrate (NO3⁻) mg / L are 435, 86, 7.7, 7.3, 15.2, 6, and 27, respectively. At this time, the water quality requirements of the factory scope item are determined based on the results of the average values, and the factory standard item is obtained.

[0069] The method for obtaining irrigation standard items and factory standard items also includes: setting a second sampling point, setting at least two second sampling points based on the irrigation scope items and the factory scope items, respectively, obtaining water quality requirements based on the sampling results of the second sampling points, obtaining second irrigation demand items and second factory demand items, sorting the second irrigation demand items and the second factory demand items to obtain irrigation sorting items and factory sorting items, selecting the first data of the irrigation sorting items and the factory sorting items, and using the first data as the water quality requirement standard for the irrigation scope items and the factory scope items, respectively, to obtain the irrigation standard items and the factory standard items.

[0070] It should be noted that the first data of the irrigation ranking items and the factory ranking items are taken as the water quality requirement standards for the irrigation scope items and the factory scope items, that is, the highest standard in the data obtained at the second sampling point is used as the irrigation standard item and the factory standard item respectively.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A method for managing the supply of recycled water resources in an urban water network, characterized in that: include: Module setting: Set the life module, irrigation module and factory module, and define the scope based on the life module, irrigation module and factory module to obtain the life scope item, irrigation scope item and factory scope item; Node setting: Based on the life scope item, irrigation scope item and factory scope item, nodes are set respectively through setting methods to obtain at least two life node items, irrigation node items and factory node items; Water quality regulation: Based on the water quality demand standard of the living scope item, the living standard item is obtained, the water quality demand standard of the irrigation scope item and the factory scope item is obtained, and the irrigation standard item and the factory standard item are obtained. The water quality purification degree of the urban supply agency is adjusted through the adjustment method, achieving the effect of on-demand configuration and improving the flexibility of water resource regeneration; Regional supply: Supply areas are established based on life node items, irrigation node items and factory node items. The supply areas are connected to the city supply agencies and are connected to each other. Life node items, irrigation node items and factory node items supply water to the supply areas respectively. When the first target area is out of water, the second target area is searched through the search method to branch water supply to the first target area, so as to ensure the normal life and production of the supply area; The search method comprises: Step 1: Range setting, setting a first search range, obtaining a first range item, taking the node position of the first target area as the starting point, obtaining the node information within the first range item, and obtaining a node quantity set; Step 2: Node judgment: Based on the node quantity set, determine whether the nodes in the node quantity set meet the supply standard, set the nodes that meet the supply standard as demand nodes, and obtain the demand node set; Step 3: Gap judgment, obtain the water shortage demand of nodes in the first target area, obtain the demand item, obtain the distance data between the nodes in the demand node set and the nodes in the first target area, and obtain the distance ranking item; Step 4: Gap filling: Based on the distance sorting item, set the filling threshold, and select the target number of nodes based on the filling threshold until the filling threshold meets the requirement.

2. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The supply standard includes the supply quantity, and the node judgment method includes: standard setting, setting the minimum conservation quantity, obtaining the residual water quantity of the nodes in the node quantity set, judging whether the residual water quantity meets the minimum conservation quantity, when the residual water quantity of the node does not meet the minimum conservation quantity, judging the target node as a screening node, when the residual water quantity of the node meets the minimum conservation quantity, judging the target node as a demand node, and obtaining a demand node set.

3. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The supply standard includes upper and lower level standards, and the node judgment method includes: S1: Standard calibration, based on life node items, irrigation node items and factory node items, calibrating the superior-subordinate relationship, where life node items are the highest and factory node items are the lowest; S2: Superior-subordinate judgment, obtain the attribute information of the nodes in the first target area and the nodes in the node concentration, and judge the superior-subordinate relationship of the node attributes. When the attribute information of the nodes in the node concentration is lower than the node attribute information of the first target area, the target node is judged to be a eliminated node. When the attribute information of the nodes in the node concentration is higher than the node attribute information of the first target area, the target node is judged to be a demand node, and the demand node set is obtained.

4. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The module setting method includes: M1: module definition, based on the life module, irrigation module and factory module, the module definition is calibrated respectively to obtain the life definition item, irrigation definition item and factory definition item; M2: Scope delineation. Based on life definition items, irrigation definition items and factory definition items, multiple scopes are delineated respectively to obtain scope delineation items, and the scope delineation items are divided to obtain life scope items, irrigation scope items and factory scope items.

5. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The setting method comprises: N1: Range division, setting a division threshold, and dividing the living range item, irrigation range item, and factory range item based on the division threshold, to obtain multiple living division items, irrigation division items, and factory division items; N2: Location selection, setting selection criteria, based on the selection criteria, standard division of life division items, irrigation division items and factory division items, selecting division points as target points, obtaining target point sets, setting nodes based on the target point sets, obtaining life node items, irrigation node items and factory node items.

6. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The node includes at least one water storage device, which is connected to the city supply mechanism for supplying water to the water storage device. The water storage device is also connected to a water pipeline within the node for transporting water resources stored in the water storage device.

7. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The method for obtaining the irrigation standard items and the factory standard items includes: X1: first sampling point setting, based on the irrigation scope item and the factory scope item, at least two first sampling points are set respectively to obtain the irrigation sampling item and the factory sampling item; X2: Questionnaire sampling, based on the irrigation sampling items and the factory sampling items, obtain water quality requirements, and obtain the first irrigation demand item and the first factory demand item; X3: Demand average, obtain the average value of the first irrigation demand item and the first factory demand item, obtain the irrigation average item and the factory average item, use the irrigation average item and the factory average item as the water quality demand standard for the irrigation scope item and the factory scope item, and obtain the irrigation standard item and the factory standard item.

8. The method for managing the supply of recycled water resources in an urban water network according to claim 1, characterized in that: The method for obtaining the irrigation standard items and factory standard items also includes: setting a second sampling point, setting at least two second sampling points based on the irrigation scope items and the factory scope items, respectively, obtaining water quality requirements based on the sampling results of the second sampling points, obtaining second irrigation demand items and second factory demand items, sorting the second irrigation demand items and the second factory demand items to obtain irrigation sorting items and factory sorting items, selecting the first data of the irrigation sorting items and the factory sorting items, using the first data as the water quality requirement standard for the irrigation scope items and the factory scope items, respectively, to obtain the irrigation standard items and the factory standard items.

9. A reclaimed water resource supply management system for an urban water network, characterized in that: A method for managing the supply of recycled water resources in an urban water network is used as described in any one of claims 1 to 8.

Images