Method for formulating comprehensive water quota for industrial sectors based on dual control indicators of water resources

Abstract

The present invention relates to a water resources management method, and the purpose is to provide a method for formulating comprehensive water quotas for industrial industries based on water resources dual control indicators, so as to provide solid technical support for realizing rigid constraints on regional water resources and strengthening water conservation management. The technical scheme is a method for formulating comprehensive water quotas for industrial industries based on water resources dual control indicators, comprising the following steps: 1: Investigate and collect basic regional information; 2: Determine the comprehensive water quota measurement indicators for industrial industries; 3: Determine the industry classification method for formulating comprehensive water quotas for industrial industries; 4: Determine the water efficiency control rules for industrial water users; 5: Determine the validity period of the comprehensive water quota for industrial industries; 6: Determine the total industrial water consumption indicators in the region; 7: Use the large system decomposition-coordination method to construct a calculation model for the comprehensive water quota for industrial industries based on the dual control indicators of water resources; 8: Use the linear programming method to solve the model and determine the comprehensive water quota for industrial industries.

Description

Technical Field

[0001] The present invention relates to a water resources management method, in particular to a method for formulating comprehensive water use quotas for industrial sectors based on water resources dual control indicators. Background Art

[0002] The state implements a system that combines total water use control with quota management, including total water use indicators and water use intensity indicators, which play a role in constraining and guiding the development and utilization of water resources from a macro level; and from a micro level, it is necessary to measure the water conservation level of various water users, realize the supervision and reasonable regulation of water use behavior, and force the optimization of the scale, structure, and layout of economic and social development through water quota management. The current water quota compilation is mostly based on sample surveys. In the formulation process, the micro-level water quota standards and the macro-level water use total volume and intensity indicators have not been effectively coordinated and connected, resulting in the macro-indicators and micro-indicators not being fully and effectively connected, and it is difficult to form a comprehensive constraint force, which affects the effective play of the rigid constraint of water resources. In addition, the current industrial water quota management system mainly determines water quotas according to individual products, and the existing product water quotas are far from covering all industrial products; in actual production, most industrial water users have several to dozens or even hundreds of products, which makes it very difficult for the industry authorities who take water users as the actual management objects to operate, directly affecting the effective implementation of many water resource management systems such as planned water use and progressive price increases for exceeding quotas. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a method for formulating comprehensive water quotas for industrial industries based on water resources dual control indicators, thereby providing solid technical support for achieving rigid constraints on regional water resources and strengthening water conservation management.

[0004] The technical solution provided by the present invention is: a method for formulating comprehensive water quota for industrial sectors based on water resources dual control indicators, comprising the following steps:

[0005] Step 1: Investigate and collect basic regional data; including regional water consumption and intensity indicators, current dominant industrial sectors, current industrial output value, current industrial water efficiency, etc.

[0006] Step 2: Determine the measurement indicators of the comprehensive water quota of the industrial sector; the comprehensive water quota of the industrial sector is defined as the control indicator of the unit water consumption of water users in a certain industrial sector within a certain period of time, and has the following connotations: first, the water consumption of the industry is determined based on the water users as the basic unit; second, the water consumption of the industry should be in line with the development trend of water conservation, and the water quota of the industry should remain relatively stable within a certain period of time. Considering that the measurement indicators of the comprehensive water quota of the industrial sector should be comprehensive indicators that can intuitively represent the relationship between water resource consumption and economic benefits, and the relevant data are easy to obtain regularly, the water consumption per unit of output value is selected as the measurement indicator of the comprehensive water quota of the industrial sector.

[0007] Step 3: Determine the industry classification method for the formulation of comprehensive water consumption quotas for the industrial sector; based on the major industry categories of the industrial sector in the National Economic Industry Classification (GBT 4754-2017), industries whose total industrial output value accounts for more than 5% of the regional total industrial output value or whose number of enterprises accounts for more than 5% of the number of regional enterprises are determined as dominant industries according to the major industry categories, and other industries in the region are uniformly classified as other non-dominant industries.

[0008] Step 4: Determine the water efficiency control rules for industrial water users; according to whether the industrial water users are stationed in the area, industrial water users are divided into existing industrial water users and incremental industrial water users, among which existing industrial water users are industrial water users who are currently stationed in the area, and incremental industrial water users are industrial water users who are expected to be newly stationed in the area. The water efficiency control rules for existing industrial water users are not lower than the water efficiency of existing water users themselves, and the water efficiency control rules for incremental industrial water users are to comply with the water quota standards promulgated by the government and the comprehensive water quota standards of the industry.

[0009] Step 5: Determine the validity period of the comprehensive water quota for the industrial sector; according to the "Notice of the Ministry of Water Resources on Strict Management of Water Quotas" (Water Resources

[2013] No. 268), "water quotas should be revised at least once every five years in principle", and considering the large annual fluctuations in the total output value of the industrial sector, the frequency of the time interval for revising water quotas should be shortened, so the validity period of the comprehensive water quota for the industrial sector is determined to be 3 years.

[0010] Step 6: Determine the total industrial water consumption index for the region; specifically, the following steps are included:

[0011] (1) The following formula is used to analyze the total amount of regional agricultural water use:

[0012] W a =W xa

[0013] Where: W a is the total amount of regional agricultural water use; W xa The current agricultural water consumption in the region.

[0014] (2) The following formula is used to analyze the total water consumption of regional life and urban public water:

[0015] W s =W xs ×(1+α) 3

[0016] Where: W s W is the total water consumption index for regional life and urban public use; xs is the current domestic and urban public water consumption in the region; α is the average annual growth rate of domestic and urban public water consumption in the region in the past three years.

[0017] (3) The following formula is used to analyze the total amount of water consumption outside the regional river ecological environment:

[0018]

[0019] Where: W c It is the total amount of water used for the ecological environment outside the regional river; It is the amount of water used for the ecological environment outside the river in the i-th year in the past three years.

[0020] (4) The following formula is used to analyze the total amount of regional industrial water use:

[0021] W g =WW a -W s -W c

[0022] Where: W is the total water consumption index of the region; W g It is an indicator of the total industrial water consumption in the region.

[0023] Step 7: Use the large system decomposition-coordination method to build an industrial comprehensive water quota calculation model based on water resources dual control indicators; specifically include the following steps:

[0024] (1) The overall system layer is the coordination layer; the objective function of the overall system layer is to maximize the sum of the expected total industrial output value of the region, and the function expression is as follows:

[0025]

[0026] The constraints include regional industrial water consumption total index constraint, regional industrial water consumption efficiency index constraint, regional industrial scale constraint, etc. The function expression is as follows:

[0027] Regional industrial water consumption index constraints:

[0028] Regional industrial water efficiency index constraints:

[0029] Regional industrial scale constraints:

[0030] Where: G j is the expected total industrial output value of the jth industry in the region; W g,j is the expected industrial water consumption of the jth industry in the region; B is the water consumption control target per unit output value of the region; G x is the current total industrial output value of the region; N is the number of regional industrial categories.

[0031] (2) The objective function of the subsystem layer is to maximize the expected total industrial output value of each industrial sector. The function expression is as follows:

[0032] Obj:maxG j

[0033] The constraints include the total water consumption index constraints of each industrial sector, the comprehensive water consumption quota constraints of each industrial sector, and the total industrial output value constraints of each industrial sector. The function expression is as follows:

[0034] Constraints on total water consumption of each industrial sector:

[0035]

[0036] B xj =W xg,j / G xj

[0037] Constraints on the comprehensive water quota for each industrial sector:

[0038] B xj20％ ≤QA j ≤B xj

[0039]

[0040] Constraints on the total industrial output value of each industrial sector:

[0041] 0.8×β xj ≤β j ≤β xj

[0042] Where: G xj is the current industrial output value of the jth industry; QA j B is the comprehensive water quota for the jth industry; xj is the current water use efficiency of the jth industry; W xg,j B is the current industrial water consumption of the jth industry; xj20％ The water use efficiency of enterprises in the jth industry with a water use efficiency pass rate of 20%; For the jth industryk Current water use efficiency of each enterprise, j M is the number of enterprises in the jth industry; β j is the expected growth rate of total industrial output value of the jth industry in the region; β xj It is the growth rate of the total industrial output value of the jth industry compared with the previous year.

[0043] Step 8: Use linear programming to solve the model and determine the comprehensive water quota for the industrial sector; specifically, the following steps are included:

[0044] (1) The following formula is used to decompose the total industrial water consumption index at the system level:

[0045]

[0046] (2) Calculate the expected total industrial output value of the jth industry at the subsystem level, which specifically includes the following steps:

[0047] ①Give the comprehensive industrial water quota QA for each industry category in the iterative order j,m ;

[0048] ② Use the following formula to calculate the expected total industrial output value of the jth industry:

[0049]

[0050] In the formula: QA j,m The industrial comprehensive water quota given for the j-th industry in the m-th iteration.

[0051] (3) The following formula is used to calculate the expected total industrial output value of the region at the total system level:

[0052]

[0053] Where: G g is the expected total industrial output value of the region.

[0054] (4) The linear programming method is used to solve the model and determine the comprehensive water quota standard for industrial sectors, which specifically includes the following steps:

[0055] ① According to step (1), the total industrial water consumption index is preliminarily decomposed to obtain the total industrial water consumption index of each industry;

[0056] ② According to the decomposed total industrial water consumption index of each industry, the expected total industrial output value of each industry is calculated according to step (2), and the initial value of the industrial comprehensive water consumption quota is iterated until the specified iterative convergence condition is met to obtain the expected total industrial output value of each industry;

[0057] ③ Based on the expected total industrial output value of each industry, the expected total industrial output value of the region is obtained according to step (3), and the total industrial water consumption index is iteratively decomposed until the specified iterative convergence conditions are met to obtain the comprehensive industrial water consumption quota of each industry.

[0058] The beneficial effects of the present invention are as follows: the provided method integrates the basic principles and methods of multiple disciplines such as hydraulics, statistics, and economics, and proposes a method for formulating comprehensive water quotas for industrial industries based on water resources dual control indicators. The formulated comprehensive water quotas for industrial industries can supplement the limitations of the water resources management system combining total control with quota management in the current water resources management, enrich the water quota management indicator system, and help to form a multi-level water control indicator standard system combining macro-level-water total and intensity indicator control, meso-level-industry comprehensive water quota control, and micro-level-product water quota control, providing a more intuitive, convenient, and easy-to-operate "scale" for measuring the water-saving level of various water-using objects, and improving the efficiency of management work such as planned water use management, progressive price increase for exceeding quotas, and water resources demonstration for construction projects. By formulating industrial quota standards linked to total water use and intensity indicators, a clear guiding standard is provided for the realization of regional industrial water use efficiency goals, and the improvement of industrial water use efficiency is promoted, thereby laying a good foundation for implementing the dual control of water consumption total and intensity and establishing a rigid water resource constraint system. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a flow chart of the present invention.

[0060] Figure 2 The present invention is a flowchart of the steps of solving the linear programming method used in solving the industrial comprehensive water quota calculation model based on the dual control indicators of water resources. DETAILED DESCRIPTION

[0061] The idea of ​​the present invention is: based on the basic theoretical methods of water conservancy disciplines, strictly abide by the current national laws and regulations, first propose a measurement indicator for the comprehensive water quota of the industrial industry, and then, based on this indicator, propose an industry category classification method for determining the formulation of the comprehensive water quota of the industrial industry, water efficiency management rules for industrial water users, and the validity period of the comprehensive water quota of the industrial industry. On the basis of analyzing and determining the total industrial water use indicators in the region, finally, the large system decomposition-coordination method is used to construct an industrial industry comprehensive water quota calculation model based on the dual control indicators of water resources, and the model is used to calculate the comprehensive industrial water quotas of various industries in the region.

[0062] The present invention is further described in detail below in conjunction with embodiments.

[0063] like Figure 1As shown, the method for formulating the comprehensive water quota for industrial industries based on the dual control indicators of water resources is shown. Taking region A as an example, the method of the present invention is used to formulate the comprehensive water quota for industrial industries based on the dual control indicators of water resources.

[0064] (1) Investigate and collect basic information about Area A.

[0065] The total water consumption index of area A is 129.8 million m 3 The water consumption per unit output value is 1.28m 3 / 10,000 yuan. The current industrial output value of Region A is 99.61 billion yuan, and the number of industrial enterprises is 656, with the leading industries being electrical machinery and equipment manufacturing, paper and paper products, computer communications and other electronic equipment manufacturing, chemical raw materials and chemical products manufacturing, general equipment manufacturing, textiles, metal products, non-metallic mineral products, rubber and plastic products, etc.

[0066] The current status of total industrial output value, number of enterprises and water use efficiency of different industries in Region A are shown in Table 1.

[0067] Table 1 Current status of total industrial output value, number of enterprises and water use efficiency in different industries in Region A

[0068]

[0069] (2) According to step 2 of the present invention, the comprehensive water quota of the industrial sector is defined as a control indicator of the unit water consumption of water users in a certain industrial sector within a certain period of time, and the water consumption per unit output value is selected as a measurement indicator of the comprehensive water quota of the industrial sector in region A.

[0070] (3) According to step 3 of the present invention, based on the industry categories of the industrial industry in the "National Economic Industry Classification" (GBT 4754-2017), the industry whose total industrial output value accounts for more than 5% of the regional total industrial output value or the number of industry enterprises accounts for more than 5% of the number of regional enterprises is determined as the dominant industry according to the industry category, and other industries in the region are uniformly classified as other non-dominant industries. The industry categories for formulating the comprehensive water consumption quota of the industrial industry in region A are determined to be electrical machinery and equipment manufacturing, paper and paper products manufacturing, computer communication and other electronic equipment manufacturing, chemical raw materials and chemical products manufacturing, general equipment manufacturing, textile industry, metal products industry, non-metallic mineral products industry, rubber and plastic products industry, a total of 9 dominant industries, plus other non-dominant industries, a total of 10 categories.

[0071] (4) According to step 4 of the present invention, industrial water users are divided into existing industrial water users and incremental industrial water users according to whether they are stationed in the area. The water use efficiency control rule for existing industrial water users is not lower than the water use efficiency of existing water users themselves, and the water use efficiency control rule for incremental industrial water users is to comply with both the water use quota standards promulgated by the government and the comprehensive water use quota standards of the industry in which they are located.

[0072] (5) According to step 5 of the present invention, according to the requirement of the Notice of the Ministry of Water Resources on Strict Management of Water Use Quotas (Water Resources

[2013] No. 268) that "water use quotas shall be revised at least once every five years in principle", and considering the large annual variation of the total output value of the industrial sector, the time interval and frequency of water use quota revisions should be shortened, and the validity period of the comprehensive water use quota for the industrial sector is determined to be 3 years.

[0073] (6) According to step 6 of the present invention, the total industrial water consumption index of region A is analyzed as follows:

[0074] ①Analysis of total agricultural water use indicators

[0075] The survey shows that the current agricultural water consumption in area A is 37.28 million m 3 , and then use the regional agricultural water use total index analysis formula W described in step 6 of the present invention a =W xa The total agricultural water use index of region A is 37.28 million m 3 .

[0076] ②Analysis of total water consumption indicators for domestic and urban public use

[0077] The survey shows that the current domestic and urban public water consumption in area A is 52.89 million m 3 , the average annual growth rate of domestic and urban public water consumption in area A in the past three years is 5.8%, and then the regional domestic and urban public water consumption index analysis formula W described in step 6 of the present invention is used s =W xs ×(1+α) 3 The total amount of domestic and urban public water consumption in Region A is 62.64 million m 3 .

[0078] ③Analysis on the total amount of water consumption for the ecological environment outside the river

[0079] The survey found that the water consumption of the ecological environment outside the river in area A in the past three years was 13.81 million m 3 , 12.45 million m 3 , 10.46 million m 3 Then, the total amount of water consumption of the ecological environment outside the regional river channel described in step 6 of the present invention is used as the analysis formula The total amount of water used for ecological environment outside the river channel in region A is 12.24 million m 3 .

[0080] ④Analysis of total industrial water consumption indicators

[0081] The survey shows that the current industrial water consumption in area A is 9.91 million m 3 , and then use the regional industrial water consumption index analysis formula W described in step 6 of the present invention g =WW a -W s -W c Calculation shows that the total industrial water consumption in area A is 17.64 million m 3 .

[0082] (7) According to step 7 of the present invention, a comprehensive water quota calculation model for industrial sectors in region A based on water resources dual control indicators is constructed as follows:

[0083] 1) The overall system layer is the coordination layer; the objective function of the overall system layer is to maximize the sum of the expected total industrial output value of the region, and the function expression is as follows:

[0084]

[0085] The constraints include regional industrial water consumption total index constraint, regional industrial water consumption efficiency index constraint, regional industrial scale constraint, etc. The function expression is as follows:

[0086] Regional industrial water consumption index constraints:

[0087] Regional industrial water efficiency index constraints:

[0088] Regional industrial scale constraints:

[0089] Where: G j is the expected total industrial output value of the jth industry in the region; W g,j is the expected industrial water consumption of the jth industry in the region; B is the water consumption control target per unit output value of the region; G x is the current total industrial output value of the region; N is the number of regional industrial categories.

[0090] 2) The objective function of the subsystem layer is to maximize the expected total industrial output value of each industrial sector. The function expression is as follows:

[0091] Obj:maxG j

[0092] The constraints include the total water consumption index constraints of each industrial sector, the comprehensive water consumption quota constraints of each industrial sector, and the total industrial output value constraints of each industrial sector. The function expression is as follows:

[0093] Constraints on total water consumption of each industrial sector:

[0094]

[0095] B xj =W xg,j / G xj

[0096] Constraints on the comprehensive water quota for each industrial sector:

[0097] B xj20％ ≤QA j ≤B xj

[0098]

[0099] Constraints on the total industrial output value of each industrial sector:

[0100] 0.8×β xj ≤β j ≤β xj

[0101] Where: G xj is the current industrial output value of the jth industry; QA j B is the comprehensive water quota for the jth industry; xj is the current water use efficiency of the jth industry; W xg,j B is the current industrial water consumption of the jth industry; xj20％ The water use efficiency of enterprises in the jth industry with a water use efficiency pass rate of 20%; For the jth industry k Current water use efficiency of each enterprise, j M is the number of enterprises in the jth industry; β j is the expected growth rate of total industrial output value of the jth industry in the region; β xj It is the growth rate of the total industrial output value of the jth industry compared with the previous year.

[0102] (8) According to step 8 of the present invention, Figure 2 As shown in the flow chart, the linear programming method is used to solve the constructed industrial comprehensive water quota calculation model, and the comprehensive water quota standards for different industrial sectors in area A are shown in Table 2.

[0103] Table 2 Comprehensive water quota standards for different industrial sectors in Region A

[0104] Serial number Industry Category Name <![CDATA[Water consumption per unit output value (m 3 / 10,000 yuan)]]> 1 Electrical machinery and equipment manufacturing industry 0.59 2 Paper and paper products industry 1.04 3 Computer, communication and other electronic equipment manufacturing 1.58 4 Chemical raw materials and chemical products manufacturing industry 0.86 5 General equipment manufacturing industry 1.26 6 Textile Industry 1.76 7 Metal products industry 1.04 8 Non-metallic mineral products industry 0.86 9 Rubber and plastic products industry 1.04 10 Other non-dominant industries 0.95 。

Claims

1. The method for formulating comprehensive water quotas for industrial sectors based on water resources dual control indicators includes the following steps: Step 1: Investigate and collect basic regional information; Step 2: Determine the measurement indicators for the comprehensive water quota of industrial sectors; Step 3: Determine the industry classification method for setting comprehensive water consumption quotas for industrial sectors; Step 4: Determine water efficiency control rules for industrial water users; Step 5: Determine the validity period of the comprehensive water quota for industrial sectors; Step 6: Determine the total industrial water consumption index in the region; Step 7: Use the large system decomposition-coordination method to build a comprehensive water quota calculation model for industrial sectors based on water resources dual control indicators; Step 8: Use linear programming method to solve the model and determine the comprehensive water quota for industrial sectors; The determination of the total amount of regional industrial water use is carried out according to the following steps: (1) The following formula is used to analyze the total amount of regional agricultural water use indicators: Where: W a is the total amount of regional agricultural water use; W xa is the current agricultural water consumption in the region; (2) The following formula is used to analyze the total water consumption of regional life and urban public water: Where: W s W is the total water consumption index for regional life and urban public use; xs The current domestic and urban public water consumption in the region; The average annual growth rate of domestic and urban public water consumption in the region in the past three years; (3) The following formula is used to analyze the total amount of water consumption for the ecological environment outside the regional river: Where: W c It is the total amount of water used for the ecological environment outside the regional river; It is the first Annual water consumption for ecological environment outside the river; (4) The following formula is used to analyze the total regional industrial water consumption index: Where: W is the total water consumption index of the region; W g It is an indicator of the total amount of regional industrial water use; The construction of the industrial comprehensive water quota calculation model based on water resources dual control indicators is carried out according to the following steps: (1) The objective function of the overall system layer is: Obj: The constraints are: Regional industrial water consumption index constraints: Regional industrial water efficiency index constraints: Regional industrial scale constraints: Where: is the expected total industrial output value of the jth industry in the region; is the expected industrial water consumption of the jth industry in the region; B is the water consumption control target per unit output value of the region; is the current total industrial output value of the region; N is the number of regional industrial categories; (2) The objective function of the subsystem layer is: Obj: The constraints are: Constraints on total water consumption of each industrial sector: Constraints on the comprehensive water quota for each industrial sector: Constraints on the total industrial output value of each industrial sector: Where: For the Industry status: Total industrial output value; For the Comprehensive water quota for the industry; For the Industry status Water use efficiency; For the Industry status Industrial water consumption; For the Industry status Enterprise water use efficiency pass rate is 20% corresponding to water use efficiency; For the Industry No. Current water use efficiency of each enterprise, For the Industry status Number of enterprises; For the region Expected growth rate of total industrial output value of the industry; For the Industry status: Growth rate of total industrial output value compared to the previous year.

2. The method for formulating comprehensive water quotas for industrial sectors based on water resources dual control indicators according to claim 1 is characterized by: The measurement indicators of the comprehensive water quota of the industrial sector are used to determine the water consumption per unit of output value.

3. The method for formulating comprehensive water quotas for industrial sectors based on water resources dual control indicators according to claim 2 is characterized by: The industry classification method for formulating the comprehensive water consumption quota for the industrial sector is determined as follows: industries whose total industrial output value accounts for more than 5% of the region's total industrial output value or whose number of enterprises accounts for more than 5% of the number of enterprises in the region are identified as dominant industries, and other industries in the region are uniformly classified as other non-dominant industries.

4. The method for formulating comprehensive water quotas for industrial sectors based on water resources dual control indicators according to claim 3 is characterized by: The water use efficiency control rules for the industrial water users are determined as follows: the water use efficiency of existing industrial water users shall not be lower than the water use efficiency of existing water users themselves, and the water use efficiency of incremental industrial water users shall comply with both the water use quota standards promulgated by the government and the comprehensive water use quota standards requirements of the industry in which they are located.

5. The method for formulating comprehensive water quota for industrial sectors based on water resources dual control indicators according to claim 4 is characterized by: The validity period of the comprehensive water quota for industrial sectors is set at 3 years.

6. The method for formulating comprehensive water quotas for industrial sectors based on water resources dual control indicators according to claim 5 is characterized by: The linear programming method is used to solve the constructed model, including the following steps: (1) The following formula is used to decompose the total industrial water consumption index at the system level: (2) Calculation of the expected total industrial output value of the jth industry at the subsystem level includes the following steps: According to the iteration order, the comprehensive industrial water quota for each industry category is given separately ; ② Use the following formula to calculate the expected total industrial output value of the jth industry: Where: The industrial comprehensive water quota given for the jth industry at the mth iteration; (3) The following formula is used to calculate the expected total industrial output value of the region at the total system level: Where: is the expected total industrial output value of the region; (4) The linear programming method is used to solve the model and determine the comprehensive water quota standard for industrial sectors, including the following steps: According to step (1), the total industrial water use index is preliminarily decomposed to obtain the total industrial water use index of each industry; ② According to the decomposed total industrial water consumption index of each industry, the expected total industrial output value of each industry is calculated according to step (2), and the initial value of the industrial comprehensive water consumption quota is iterated until the specified iterative convergence condition is met to obtain the expected total industrial output value of each industry; ③ Based on the expected total industrial output value of each industry, the expected total industrial output value of the region is obtained according to step (3), and the total industrial water consumption index is iteratively decomposed until the specified iterative convergence conditions are met to obtain the comprehensive industrial water consumption quota of each industry.

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