CN112085317A - Water-shortage city multi-water-source fine matching method for water supply management requirements - Google Patents
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Abstract
A multi-water-source fine matching method for water-deficient cities for water supply management demands comprises the steps of accurately measuring and calculating the water demand for city classification and a multi-water-source fine matching strategy; the accurate measurement of the urban classification water demand is a differential measurement and calculation of the water demand for establishing and distinguishing the near-term water demand and the medium-term water demand and the long-term water demand, establishing the district and establishing the district, and measuring and calculating the water demand of the fitting value and the guarantee value; the multiple water sources fine matching strategy is to use traditional water sources and non-traditional water sources including standard tail water, high-quality reclaimed water, rainwater and sea fresh water in a comprehensive mode, the traditional water sources are preferentially used for domestic water of residents, the standard tail water and the rainwater are utilized to the maximum degree to preferentially ensure ecological water, and the high-quality reclaimed water is preferentially used for greening and urban miscellaneous water such as roads. According to the method, through accurate measurement and calculation of monthly water demand, fine management of urban water consumption can be realized, and a method basis is provided for overall planning and scheduling of multiple water sources in water-deficient cities, particularly decision making of non-traditional water source development and utilization projects.
Description
Technical Field
The invention belongs to the technical field of urban water supply and supply management, and particularly relates to a water-shortage urban multi-water-source fine matching method for water supply management requirements.
Background
In recent years, water resource shortage has become one of three major threats to the survival of the world population. China is a big population country with 20% of the world population, and water resource storage accounts for only 7% of the total global amount. Due to uneven water resource distribution, the per-capita renewable fresh water resource quantity of most cities in China, particularly northern cities, is far lower than the per-capita renewable fresh water resource quantity which can be identified as water resource shortage and is defined by the United nations. Water shortage has even become a major factor affecting the further high-quality development of water-deficient cities, especially severe water-deficient cities that rely entirely on the external regulation of traditional water sources.
In the process of researching and solving the water supply and utilization safety guarantee of water-deficient cities, the development and utilization of non-traditional water resources are increasingly and always concerned by various circles. In recent years, development approaches, mainstream technologies and utilization benefits of non-traditional water resources such as reclaimed water and rainwater are basically determined, and a large amount of research and practice of seawater desalination are also carried out in coastal areas. Therefore, the types of usable non-traditional water resources are increasingly diversified, the development and utilization technology is mature day by day, measure selection is provided for guaranteeing the water supply safety of water-deficient cities, and the problem of water resource restriction of the water-deficient cities is solved in a technical level.
However, from the perspective of the water supply and water management department in a water-deficient city, how to fully exert the macroscopic guidance of water resource planning on the safety guarantee of the water supply and water supply in the city, how to refine and implement the water resource planning indexes into the daily management business of the water supply and water supply in the city and the decision of infrastructure construction projects also becomes the most concerned practical problem in the water supply and water management field.
Therefore, a water-shortage city multi-water-source fine matching method oriented to the water supply management requirements is developed, the macro guidance of city water resource planning is combined with the fine operability of water supply and supply management business, and a method basis is provided for decision making of multi-water-source overall scheduling of water-shortage cities, particularly non-traditional water source development and utilization projects.
Disclosure of Invention
In order to achieve the purpose, the invention aims to provide a water-shortage city multi-water-source fine matching method for water supply management requirements.
As conceived above, the technical scheme of the invention is as follows: a water-deficient city multi-water-source fine matching method for water supply management requirements is characterized by comprising the following steps: the method comprises the steps of accurately measuring and calculating the water demand for city classification and a multi-water-source fine matching strategy; the accurate measurement of the urban classified water demand is to construct and distinguish the difference measurement of the short-term water demand, the medium-term water demand and the long-term water demand, the difference measurement of the water demand of a built area and a built area, the water demand of a fitting value and a guarantee value, and refine the water demand into the urban monthly water demand according to the change rule of the full-classification monthly water demand; the multiple water sources fine matching strategy is to comprehensively use traditional water sources and non-traditional water sources including standard tail water, high-quality reclaimed water, rainwater and seawater according to accurate measurement and calculation of urban classification water demand, the traditional water sources are preferentially used for domestic water of residents, the standard tail water and the rainwater are utilized to the maximum extent to preferentially ensure ecological water, the high-quality reclaimed water is preferentially used for urban miscellaneous water such as greening and roads, and the reclaimed water supply notch is reasonably used when the seawater and the freshwater supplement water demand peaks.
Further, the recent water demand is iterated by adopting data of the past years, the long-term water demand is calculated based on population scale and the growth rate of water consumption projects, the water consumption index of the built-up area is obtained by calculating actual water consumption data of the past years, the water consumption index of the built-up area is determined as the percentage of the water consumption index of the built-up area based on the actual water consumption data, the fitting value water demand refers to the water demand of residential life and public building projects, the fitting value water demand is obtained by iteratively measuring and calculating the water consumption data of the past years and is used for guaranteeing the fit with the actual water consumption data, and the guarantee value is respectively measured and calculated by the population and building area growth rate and the corresponding water consumption index so as to.
Further, the accurate measurement and calculation of the urban classified water demand firstly determines the actual water consumption index of each classified water use path, including establishing an urban resident life water demand increase rule, determining the actual numerical value of a public building coefficient, determining a community per-capita greening area index, determining a water consumption index numerical value of a greening project under construction, determining an urban road watering water consumption index numerical value and determining a construction water consumption index, then calculating urban classified time-sharing water demand, and calculating the recent urban resident life water demand according to the urban resident life water demand increase rule by combining with the average value of the water consumption increase rate gradient change; calculating the recent water demand of the urban public building project according to the actual numerical value of the public building coefficient and by combining the domestic water consumption of residents; calculating the greening water demand of the urban community according to the per-capita greening area index of the community and by combining the urban population and the water quota for the green land cultivation; calculating the water demand of the urban under-construction greening project according to the water consumption index value of the under-construction greening project and by combining the area of the under-construction greening project; calculating the watering water demand of the recent road of the city according to the watering index value of the city road and by combining the area of the city road; calculating the recent construction water consumption of the city by combining construction water projects according to the construction water index; the water demand for the recent greening of the city is added by the water demand for the greening of the urban subdistrict and the water demand for the municipal greening of the city.
Furthermore, the urban resident living water demand growth rule is established according to the urban water consumption and the dynamic data of the resident living water consumption and the water consumption population over the years, the actual numerical value of the public building coefficient is determined according to the urban resident living water consumption and the public building project water consumption over the years, the community per-person greening area index is determined according to the residential community greening area and the resident population of the urban built-up area, the building greening project water index numerical value is determined according to the building greening and maintaining water consumption and the building greenbelt area of the urban over the years, the road watering water index numerical value is determined according to the road watering water consumption and the road maintaining area of the urban over the years, and the construction water index is determined according to the urban construction water consumption over the years; the short-term water demand of the city is refined to the average water demand per month, the peak water demand of the city is refined to the average water demand per day in months, and the long-term water demand of the city is refined to the average water demand per year according to the planned population of the city, the planned land area, the construction project map and the annual plan thereof and by combining the water consumption quota calculation provided by the corresponding planning specification.
Further, the urban municipal greening water demand is the sum of the municipal greening water demand under construction and the water demand of the pipe-supporting greening project.
Further, in the method for measuring and calculating the water demand of urban municipal greening, the water index of the under-construction and municipal greening project is 30% of the water quota specified in the outdoor water supply design standard (GB50013-2018), and the monthly water consumption is calculated through the monthly area increase rate and the water index of the under-construction and greening project.
Further, in the accurate measurement and calculation of the urban classified water demand, the monthly water demand of the residents in the built-up area is measured and calculated through the monthly rate increase of the actual water consumption of the past year, and the monthly rate increase of the residents in the built-up area and the rate increase of the building area are measured and calculated.
Furthermore, the water demand of the pipe-maintaining greening project is calculated by the water quota of the pipe-maintaining greening area and the green land.
Furthermore, the monthly increase rate of the population of the residents in the building area is comprehensively determined by combining the target population number in the planning period through the monthly dynamic change rule of the number of the population living in the building area.
Compared with the prior art and the method, the method has the following advantages:
1. based on the dynamic change characteristic analysis of the actual water consumption and the population data of water consumption over the years, the accurate measurement and calculation of the recent (within five years) water demand of the urban resident life and public building project are realized.
2. Based on the refinement of water use types and the fusion of project planning and construction plans, the accurate measurement and calculation of the water demand of urban greening and partial public construction projects are realized.
3. Based on the integration of the method for measuring and calculating the urban water demand in classification, time division and region division, the detailed calculation of the monthly water demand of the city is realized, and the peak value characteristic of the urban water demand is identified.
4. According to the accurate measurement and calculation result of urban water demand, based on the non-traditional water resource maximized utilization target guidance, the decision-making strategy for guaranteeing the water supply safety of the water-deficient city in which the traditional water resource and the non-traditional water resource are used comprehensively is determined, and a multi-water-resource refined matching mode is formed.
Drawings
FIG. 1 is a schematic diagram of a multiple water source fine matching workflow.
Detailed Description
The detailed implementation method of the multi-water-source refined matching method for the water-deficient city for the water supply management requirements is described in detail according to the attached drawings.
First, collecting basic data. Collecting basic city condition information such as meteorological hydrology, landform, urban water body and underground water, urban infrastructure construction data such as special water-related planning, urban construction plan and project map of urban overall planning and water resource and water environment, and urban water supply service operation data information such as various classified water supply quantity and water use population quantity of urban residents living, public construction, greening, construction, roads, industry and the like for not less than 3 years; the data required by the urban water balance calculation in less than 2 years include but are not limited to conventional water supply, unconventional water supply (standard water outlet, rainwater and the like), discharge amount, water surface evaporation amount, water surface precipitation amount, underground water lateral supply amount, water level, underground water level and the like.
And secondly, determining the actual water consumption index of each classified water consumption path. Establishing a domestic water demand increase rule of urban residents according to the urban water consumption, the domestic water consumption of the residents and the dynamic data of water consumption population all the year round; determining an actual numerical value of a public building coefficient according to the domestic water consumption of urban residents and the water consumption of public building projects in the past year; determining a community per-capita greening area index according to a residential community greening area of a city built-up area and population of residents; determining a water index value (greening water consumption per unit area and unit time) of a greening project according to the greening maintenance water consumption and the greening area of the city in the past year; determining a road water index value (the road watering water consumption per unit area and unit time) according to the road watering water consumption and the road maintenance area of the city in the past year; according to the water consumption for city construction over the years, the construction water index (construction water consumption per unit area and unit time) is determined. The greening water consumption of the built-up area is determined to be 65-85% of the water index of the built-up area according to the measured data.
And thirdly, calculating the time-sharing water demand of the city classification. Calculating the domestic water demand of the recent (within five years) residents in the city according to the domestic water consumption increasing rule of the residents in the city and by combining the average value of the gradient change of the water consumption increasing rate; calculating the recent water demand of the urban public building project according to the actual numerical value of the public building coefficient and by combining the domestic water consumption of residents; calculating the greening water demand of the urban community according to the per-capita greening area index of the urban community and by combining the urban population and the water quota for the green land cultivation; calculating the water demand of the urban under-construction greening project according to the water consumption index value of the urban under-construction greening project and by combining the area of the urban under-construction greening project; the water demand for the pipe-cultivating greening is calculated according to the water quota of the pipe-cultivating greening area and the water consumption of the green land; the water demand for the recent greening of the city is added by the water demand for the greening of the urban subdistrict and the water demand for the municipal greening of the city (the sum of the water demand for the greening under construction and the water demand for the greening project of the support pipe); calculating the watering water demand of the recent road of the city according to the watering index value of the city road and by combining the area of the city road; calculating the recent construction water consumption of the city by combining construction water projects according to the urban construction water index; the recent water demand of the city is refined to the average water demand per month, and the peak value of the water demand is refined to the average water demand per day per month. The long-term water demand of the city is calculated according to the planned population of the city, the planned land area, the construction project map and the annual plan thereof and by combining the water consumption quota provided by the corresponding planning specification, and is refined to the annual average water demand.
And fourthly, determining a multi-water-source matching principle. According to the water demand measurement and calculation results of urban resident life, public construction, greening, construction, roads, industry and the like, on the premise of ensuring that the traditional water source is preferentially used for resident domestic water, the standard tail water and rainwater are maximally utilized to preferentially ensure ecological water, and high-quality regenerated water and sea fresh water are preferentially used for urban miscellaneous water and industrial water for greening, roads and the like; the priority utilization priority of two water sources in different areas is determined after technical and economic comparison so as to realize the aim of maximizing the utilization of non-traditional water resources; in addition, the utilization ratio of the reclaimed water in the residential life and public building projects can be determined through actual water passing experiments of the reclaimed water pipeline.
And fifthly, finely allocating water resources in a classified, time-sharing and regional manner. According to the current situation and the planning of available water resources in cities, the water demand of corresponding categories of the cities is taken as a target, based on the water resource matching principle, the traditional water sources and the non-traditional water sources are considered overall, and the water resources are matched in a classified and time-sharing mode.
And sixthly, repeatedly communicating with urban water supply and water supply management departments and mechanisms to confirm engineering facilities and policy suggestions capable of implementing water resource supply and demand matching schemes.
And seventhly, collecting operation data of the urban water supply management service in an all-around manner, supplementing basic data of a water demand testing method in time, continuously fitting a water consumption and water consumption index dynamic change curve, forming dynamic data of the recent water demand of the city, and gradually reducing the calculation error.
And step eight, proposing a policy and facility guarantee suggestion.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A water-deficient city multi-water-source fine matching method for water supply management requirements is characterized by comprising the following steps: the method comprises the steps of accurately measuring and calculating the water demand for city classification and a multi-water-source fine matching strategy; the accurate measurement of the urban classified water demand is to construct and distinguish the difference measurement of the short-term water demand, the medium-term water demand and the long-term water demand, the difference measurement of the water demand of a built area and a built area, the water demand of a fitting value and a guarantee value, and refine the water demand into the urban monthly water demand according to the change rule of the full-classification monthly water demand; the multiple water sources fine matching strategy is to comprehensively use traditional water sources and non-traditional water sources including standard tail water, high-quality reclaimed water, rainwater and seawater according to accurate measurement and calculation of urban classification water demand, the traditional water sources are preferentially used for domestic water of residents, the standard tail water and the rainwater are utilized to the maximum extent to preferentially ensure ecological water, the high-quality reclaimed water is preferentially used for urban miscellaneous water such as greening and roads, and the reclaimed water supply notch is reasonably used when the seawater and the freshwater supplement water demand peaks.
2. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 1, wherein: the recent water demand is iterated by adopting data of the past years, the long-term water demand is calculated based on population scale and the growth rate of water consumption projects, the water consumption index of the built-up area is obtained by calculating actual water consumption data of the past years, the water consumption index of the built-up area is determined as the percentage of the water consumption index of the built-up area based on the actual water consumption data, the fitting value water demand refers to the water demand of residential life and public building projects, the fitting value water demand is obtained by iteratively measuring and calculating the water consumption data of the past years and is used for guaranteeing the fit with the actual water consumption data, and the guaranteeing value is obtained by respectively measuring and calculating the population and building area growth rate and the corresponding water consumption index so.
3. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 1, wherein: the accurate measurement and calculation of the urban classified water demand firstly determines the actual water consumption index of each classified water use path, including establishing an urban resident life water demand increase rule, determining the actual numerical value of a public building coefficient, determining a community per-capita greening area index, determining a water consumption index numerical value of an under-construction greening project, determining an urban road watering water consumption index numerical value and determining a construction water consumption index, then calculates the urban classified time-sharing water demand, and calculates the recent urban resident life water demand by combining the average value of the gradient change of the water consumption increase rate according to the urban resident life water demand increase rule; calculating the recent water demand of the urban public building project according to the actual numerical value of the public building coefficient and by combining the domestic water consumption of residents; calculating the greening water demand of the urban community according to the per-capita greening area index of the community and by combining the urban population and the water quota for the green land cultivation; calculating the water demand of the urban under-construction greening project according to the water consumption index value of the under-construction greening project and by combining the area of the under-construction greening project; calculating the watering water demand of the recent road of the city according to the watering index value of the city road and by combining the area of the city road; calculating the recent construction water consumption of the city by combining construction water projects according to the construction water index; the water demand for the recent greening of the city is added by the water demand for the greening of the urban subdistrict and the water demand for the municipal greening of the city.
4. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 3, wherein: the urban resident living water demand growth rule is established according to dynamic data of urban water consumption, resident living water consumption and water consumption population over the years, the actual numerical value of the public building coefficient is determined according to the urban resident living water consumption over the years and the public building project water consumption, the community per-capita greening area index is determined according to the residential community greening area and the resident population of the urban built-up area, the building greening project water consumption index numerical value is determined according to the building greening maintenance water consumption and the building greenbelt area of the urban city over the years, the road watering water index numerical value is determined according to the road watering water consumption and the road maintenance area of the urban road over the years, and the construction water consumption index is determined according to the urban construction water consumption over the years; the short-term water demand of the city is refined to the average water demand per month, the peak water demand of the city is refined to the average water demand per day in months, and the long-term water demand of the city is refined to the average water demand per year according to the planned population of the city, the planned land area, the construction project map and the annual plan thereof and by combining the water consumption quota calculation provided by the corresponding planning specification.
5. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 3, wherein: the urban municipal greening water demand is the sum of the municipal greening water demand under construction and the water demand of the pipe-supporting greening project.
6. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 3, wherein: in the method for measuring and calculating the water demand of urban municipal greening, the water consumption index of a greening project under construction is 30% of the water quota specified in the outdoor water supply design standard (GB50013-2018), and the monthly water consumption is calculated through the monthly rate increase of the area of the greening project under construction and the water consumption index.
7. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 1, wherein: in the accurate measurement and calculation of the urban classified water demand, the monthly water demand of residents in the built-up area is measured and calculated through the monthly rate increase of the actual water consumption of the past year, and the monthly rate increase of the population and the rate increase of the building area of the residents in the built-up area are measured and calculated.
8. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 5, wherein: the water demand of the pipe-maintaining greening project is calculated by the water quota of the pipe-maintaining greening area and the water of the green land.
9. The method for finely matching multiple water sources in a water-deficient city facing the demand of water supply management as claimed in claim 7, wherein: and the monthly increase rate of the population of the residents in the region under construction is comprehensively determined by combining the target population number in a planning period through the monthly dynamic change rule of the number of the population living in.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102184490A (en) * | 2011-05-27 | 2011-09-14 | 北京奥特美克科技发展有限公司 | System and system for real-time monitoring and managing urban water resources |
| CN107808211A (en) * | 2017-09-15 | 2018-03-16 | 周亚岐 | A kind of regional water resources needing forecasting method |
| CN108197836A (en) * | 2018-02-07 | 2018-06-22 | 中水珠江规划勘测设计有限公司 | A kind of evaluation method of moist area of southern China municipal water Ecological Civilization Construction |
| US20190130500A1 (en) * | 2017-10-27 | 2019-05-02 | International Business Machines Corporation | Protection of water providing entities from loss due to environmental events |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184490A (en) * | 2011-05-27 | 2011-09-14 | 北京奥特美克科技发展有限公司 | System and system for real-time monitoring and managing urban water resources |
| CN107808211A (en) * | 2017-09-15 | 2018-03-16 | 周亚岐 | A kind of regional water resources needing forecasting method |
| US20190130500A1 (en) * | 2017-10-27 | 2019-05-02 | International Business Machines Corporation | Protection of water providing entities from loss due to environmental events |
| CN108197836A (en) * | 2018-02-07 | 2018-06-22 | 中水珠江规划勘测设计有限公司 | A kind of evaluation method of moist area of southern China municipal water Ecological Civilization Construction |
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Application publication date: 20201215 |