A method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption

Abstract

A method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, including: S1: calculating the influent concentration and benchmark influent concentration, carbon source dosage and benchmark carbon source dosage, phosphorus removal agent dosage and benchmark phosphorus removal agent dosage of sewage treatment plants in the service area; S2: determining the benchmark operation and maintenance costs of the sewage collection and treatment system in the service area; S3: determining the weight coefficient for improving the influent concentration of the sewage treatment plant, the carbon source agent saving weight coefficient and the phosphorus removal agent saving weight coefficient in combination with the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage; S4: determining the reward ratio in combination with the current payment status of the sewage collection and treatment operation and maintenance service fee in the service area and the incentive strength of the relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment; S5: calculating the sewage collection and treatment service fee in the service area according to the sewage collection and treatment system operation and maintenance service fee calculation model.

Description

Technical Field

[0001] The present invention belongs to the field of sewage collection and treatment service fee accounting, and in particular relates to a sewage collection and treatment service fee accounting method, system and model with the goal of improving quality and reducing consumption. Background Art

[0002] In recent years, with the continuous advancement of urban sewage treatment quality improvement and efficiency enhancement, the state and local governments have introduced a series of action plans to vigorously promote the improvement of sewage pipe network efficiency. However, the planning and construction of my country's sewage collection and treatment system has long lagged behind the urbanization process. The pipe network structure and construction quality are uneven, external water intrusion is serious, and long-term high water level and low flow rate operation are common. The concentration of organic matter in the sewage treatment plant influent and the imbalance of carbon-nitrogen ratio and carbon-phosphorus ratio have become the key bottleneck for further improving the efficiency of sewage treatment. In order to strengthen the input-output efficiency of funds, ensure that the sewage treatment quality improvement and efficiency enhancement actions achieve the expected results, and promote the new "pay for performance" model, the Ministry of Housing and Urban-Rural Development and the National Development and Reform Commission have issued a series of relevant policies to focus on the encouragement of the entire sewage collection and treatment system, and to build a performance assessment model and payment system oriented to the efficiency of pollutant collection and treatment.

[0003] For a long time, my country's drainage industry has implemented a "fixed rate payment" for sewage collection and a "pay-as-you-go" charging method for sewage treatment. From the perspective of pipeline operation and maintenance, "efficiency" is still at the fixed rate payment stage based on the length of the pipeline network, and the core indicators required for improving quality and efficiency have not yet been included in the billing elements of pipeline operation and maintenance. From the perspective of sewage treatment plants, sewage treatment capacity (daily treated water volume) and sewage treatment rate cannot represent the level of sewage collection and treatment, and cannot meet the needs of quality improvement, consumption reduction and high-quality development of the drainage industry. It is difficult to mobilize the enthusiasm of sewage collection and treatment units. Only by changing from "pay-as-you-go" to "pay-as-you-go" can we truly promote the progress of improving the quality and efficiency of sewage collection and treatment.

[0004] In summary, the technical problems to be solved by the present invention are: 1. The traditional accounting method for sewage collection and treatment service fees often only focuses on a single link and cannot fully reflect the comprehensive efficiency of the sewage network and sewage treatment. 2. The traditional accounting method lacks flexibility and is difficult to accurately control according to the specific conditions of the service area. 3. The mixing of non-domestic sewage and low-flow sedimentation will lead to an inflated treated water volume, affecting the accuracy of the evaluation results. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, which overcomes the defects of previous performance evaluation methods such as "focusing on plants and neglecting networks" and "separating plants from networks", and fundamentally achieves the goal of improving the quality and efficiency of sewage collection and treatment and high-quality development.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, comprising the following steps: S1: Calculate the influent concentration and benchmark influent concentration, carbon source dosage and benchmark carbon source dosage, phosphorus removal agent dosage and benchmark phosphorus removal agent dosage of the sewage treatment plant in the service area; S2: Determine the baseline operation and maintenance costs of the sewage collection and treatment system in the service area; S3: Determine the weight coefficient for increasing the influent concentration of the sewage treatment plant based on the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; S4: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; S5: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model.

[0007] Preferably, in step S1, the influent concentration c of the sewage treatment plant in the service area is the annual average influent BOD concentration of all sewage treatment plants in the service area for the year. , Daily water intake , the total annual water inflow Q and the number of sewage treatment plants in the area The calculation formula is as follows: ; The baseline influent BOD concentration of the sewage treatment plant in the service area , is the average annual influent concentration of all sewage treatment plants in the area in the previous year, and is calculated by the average daily influent concentration of the sewage treatment plants in the previous year. , daily water intake , Total water intake last year and the number of sewage treatment plants in the area The calculation formula is as follows: ; Preferably, the benchmark operation and maintenance costs of the service area sewage collection and treatment system described in step S2 include the sum of the operation and maintenance costs of the service area sewage collection network and the operation and maintenance costs of the sewage treatment plant.

[0008] Preferably, the weight coefficient of the sewage treatment plant influent concentration improvement in step S3 is , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient The sum is 1, that is ; When the BOD influent concentration of the sewage treatment plant in the service area is less than 100 mg / L and the centralized collection rate of domestic sewage is less than 70%, When the BOD influent concentration of the sewage treatment plant in the service area is greater than 100 mg / L and the centralized collection rate of domestic sewage is greater than 70%, Get the value.

[0009] Preferably, in step S4, the reward ratio The determining factors include the current payment status of sewage collection and treatment operation and maintenance service fees in the service area, and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment; The method to determine the reward ratio ε is: (1) Analyze the current payment status: Through market research and cost-benefit analysis, evaluate whether the current service fee payment level is sufficient to motivate service providers to upgrade technology and optimize management; (2) Assess incentive strength: Understand the policy orientation and support strength of the government or relevant departments in the field of sewage collection and treatment; (3) Determine a reasonable reward ratio ε; the reward ratio ε must be able to reflect the current economic situation and effectively respond to the government's policy orientation, thereby achieving the purpose of encouraging service providers to improve quality and reduce consumption.

[0010] Preferably, in step (3), the process of determining a reasonable reward ratio ε is as follows: collecting operation data of each sewage treatment plant in the service area, the operation data including influent concentration, treatment volume, and operation cost; studying the latest government policies and incentives in the field of sewage collection and treatment; communicating with industry experts and government officials to obtain professional opinions and suggestions; using existing data and policy information to calculate a suitable reward ratio ε through mathematical models or simulation tools.

[0011] Preferably, the sewage collection and treatment system operation and maintenance service fee calculation model in step S5 is: ; Among them, F is the operation and maintenance service fee of the sewage collection and treatment system, ten thousand yuan; The base operating and maintenance cost of the sewage collection and treatment system in the service area is RMB 10,000 per year; is the influent concentration of the sewage treatment plant, mg / L; is the baseline influent concentration of the sewage treatment plant, mg / L; The total amount of carbon source added to the sewage treatment plant, tons / year; The total amount of carbon source added to the sewage treatment plant, tons / year; Total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; The total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption.

[0012] A sewage collection and treatment service fee accounting model with the goal of improving quality and reducing consumption, the calculation formula is as follows: ； in, F is the operation and maintenance service fee of the sewage collection and treatment system, RMB 10,000; The base operating and maintenance cost of the sewage collection and treatment system in the service area is RMB 10,000 per year; is the influent concentration of the sewage treatment plant, mg / L; is the baseline influent concentration of the sewage treatment plant, mg / L; The total amount of carbon source added to the sewage treatment plant, tons / year; The total amount of carbon source added to the sewage treatment plant, tons / year; Total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; The total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption; A sewage collection and treatment service fee accounting system with the goal of improving quality and reducing consumption, comprising: Data collection and preliminary calculation module: calculate the influent concentration and benchmark influent concentration of sewage treatment plants in the service area, the carbon source dosage and benchmark carbon source dosage, the phosphorus removal agent dosage and benchmark phosphorus removal agent dosage; Benchmark operation and maintenance cost calculation module: determine the benchmark operation and maintenance cost of the sewage collection and treatment system in the service area; Weight coefficient determination module: Combined with the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage, the weight coefficient of the influent concentration of the sewage treatment plant is determined. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; Reward ratio determination module: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; Service fee calculation module: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model. A computer device comprising: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the sewage collection and treatment service fee calculation method aimed at improving quality and reducing consumption is implemented.

[0013] The present invention can achieve the following beneficial effects: 1. The present invention proposes a sewage collection and treatment service fee accounting model with the goal of improving quality and reducing consumption. It jointly evaluates the sewage collection and treatment system based on indicators such as the influent concentration of the sewage treatment plant and the key material consumption input of sewage treatment, takes into account the comprehensive efficiency of the sewage pipe network and sewage treatment, and characterizes the comprehensive effect of the system operation and maintenance management level. It can be used for sewage collection and treatment service fee accounting in the "plant-network integration" scenario, and can provide technical support for building a new payment mechanism for sewage collection and treatment systems.

[0014] 2. The present invention proposes a sewage collection and treatment service fee calculation model with the goal of improving quality and reducing consumption, and sets weight coefficients for improving quality and reducing consumption in sewage collection and treatment. Users can combine the current situation and improvement goals of the sewage collection and treatment system in the service area, and flexibly adjust the coefficient values ​​to achieve precise regulation of the quality improvement and consumption reduction effects of the sewage collection and treatment system. The model has the advantages of easy operation and strong implementation.

[0015] 3. The present invention proposes a sewage collection and treatment service fee accounting model with the goal of improving quality and reducing consumption. Indicators such as sewage treatment plant influent concentration, carbon source and phosphorus removal agent dosage are used as accounting points, which effectively avoids the impact of non-domestic sewage mixing and low-flow velocity sedimentation on the evaluation results. At the same time, relevant evaluation indicators are evaluated based on the actual operation data of the service area in the previous year as the benchmark value, which is conducive to the gradual advancement of sewage collection and treatment system efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0017] The preferred solution is Figure 1 As shown, a method for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption includes the following steps: S1: Calculate the influent concentration and benchmark influent concentration, carbon source dosage and benchmark carbon source dosage, phosphorus removal agent dosage and benchmark phosphorus removal agent dosage of the sewage treatment plant in the service area; The influent concentration c of the sewage treatment plant in the service area is the annual average influent BOD concentration of all sewage treatment plants in the service area for the calculation year. , Daily water intake , the total annual water inflow Q and the number of sewage treatment plants in the area The calculation formula is as follows: ; The baseline influent BOD concentration of the sewage treatment plant in the service area , is the average annual influent concentration of all sewage treatment plants in the area in the previous year, and is calculated by the average daily influent concentration of the sewage treatment plants in the previous year. , daily water intake , Total water intake last year and the number of sewage treatment plants in the area The calculation formula is as follows: ; S2: Determine the baseline operation and maintenance costs of the sewage collection and treatment system in the service area; The benchmark operation and maintenance costs of the service area sewage collection and treatment system include the sum of the service area sewage collection pipe network operation and maintenance costs and the sewage treatment plant operation and maintenance costs.

[0018] Assuming that the operation and maintenance cost of the sewage collection network in a certain service area is 5 million yuan / year, and the operation and maintenance cost of the sewage treatment plant is 15 million yuan / year, then the benchmark operation and maintenance cost of the service area is 20 million yuan / year.

[0019] S3: Determine the weight coefficient for increasing the influent concentration of the sewage treatment plant based on the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; The weight coefficient of the sewage treatment plant influent concentration improvement described in step S3 , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient The sum is 1, that is ; When the BOD influent concentration of the sewage treatment plant in the service area is less than 100 mg / L and the centralized collection rate of domestic sewage is less than 70%, When the BOD influent concentration of the sewage treatment plant in the service area is greater than 100 mg / L and the centralized collection rate of domestic sewage is greater than 70%, Get the value.

[0020] Assume that the BOD influent concentration of a service area is 120 mg / L and the centralized collection rate of domestic sewage is 75%.

[0021] According to the conditions, select = 0.4, = 0.3, = 0.3.

[0022] S4: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; In step S4, the reward ratio The determining factors include the current payment status of sewage collection and treatment operation and maintenance service fees in the service area, and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment; The method to determine the reward ratio ε is: (1) Analyze the current payment status: Through market research and cost-benefit analysis, evaluate whether the current service fee payment level is sufficient to motivate service providers to upgrade technology and optimize management; (2) Assess incentive strength: Understand the policy orientation and support strength of the government or relevant departments in the field of sewage collection and treatment; (3) Determine a reasonable reward ratio ε; the reward ratio ε must be able to reflect the current economic situation and effectively respond to the government's policy orientation, thereby achieving the purpose of encouraging service providers to improve quality and reduce consumption.

[0023] The current payment status of sewage collection and treatment operation and maintenance service fees in the service area: This refers to the current payment level of sewage collection and treatment services in the service area. If the existing payment standards are high enough to fully cover operating costs and encourage service quality improvement, then an additional high reward ratio may not be needed. On the contrary, if the existing payment standards are low and insufficient to motivate service providers to make improvements, then a higher reward ratio may be needed to stimulate their enthusiasm.

[0024] The intensity of incentives provided by the relevant competent authorities for improving the quality and reducing consumption of sewage collection and treatment: This refers to the intensity of incentives taken by the government or relevant management departments to promote technological progress in sewage collection and treatment and improve service quality. These measures may include but are not limited to financial subsidies, tax incentives, policy support, etc. If the government's incentives are strong, it means that the government hopes to accelerate improvements in the field of sewage treatment. In this case, setting a higher reward ratio can better match the government's policy goals.

[0025] In step (3), the process of determining a reasonable reward ratio ε is as follows: collect the operating data of each sewage treatment plant in the service area, including influent concentration, treatment volume, and operating cost; study the latest government policies and incentives in the field of sewage collection and treatment; communicate with industry experts and government officials to obtain professional opinions and suggestions; use existing data and policy information to calculate the appropriate reward ratio ε through mathematical models or simulation tools.

[0026] Assume that the current payment status of a service area shows that the current service fee payment level is 21 million yuan / year, which can cover the operating costs but is insufficient for incentives. The government has introduced new incentive policies, including financial subsidies and tax incentives, which are relatively strong. After comprehensive evaluation, the reward ratio ε is determined to be 0.1.

[0027] S5: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model.

[0028] The calculation model of the sewage collection and treatment system operation and maintenance service fee in step S5 is: ; Among them, F is the operation and maintenance service fee of the sewage collection and treatment system, ten thousand yuan; The base operating and maintenance cost of the sewage collection and treatment system in the service area is RMB 10,000 per year; is the influent concentration of the sewage treatment plant, mg / L; is the baseline influent concentration of the sewage treatment plant, mg / L; The total amount of carbon source added to the sewage treatment plant, tons / year; The total amount of carbon source added to the sewage treatment plant, tons / year; Total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; The total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption.

[0029] Assume the baseline operation and maintenance cost of a service area It is 20 million yuan per year.

[0030] Influent concentration in service area The standard influent concentration is 120 mg / L. It is 100 mg / L.

[0031] Total amount of carbon source added The total amount of carbon source added is 500 tons / year. It is 600 tons / year.

[0032] Total amount of phosphorus removal agent added The total amount of phosphorus removal agent added is 300 tons / year. It is 400 tons / year.

[0033] Weight coefficient = 0.4, = 0.3, = 0.3.

[0034] Reward ratio = 0.1.

[0035]

[0036]

[0037]

[0038]

[0039] .

[0040] A sewage collection and treatment service fee accounting model with the goal of improving quality and reducing consumption, the calculation formula is as follows: ； in, F is the operation and maintenance service fee of the sewage collection and treatment system, RMB 10,000; The base operating and maintenance cost of the sewage collection and treatment system in the service area is RMB 10,000 per year; is the influent concentration of the sewage treatment plant, mg / L; is the baseline influent concentration of the sewage treatment plant, mg / L; The total amount of carbon source added to the sewage treatment plant, tons / year; The total amount of carbon source added to the sewage treatment plant, tons / year; Total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; The total amount of phosphorus removal agent added to the sewage treatment plant, tons / year; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption; A sewage collection and treatment service fee accounting system with the goal of improving quality and reducing consumption, comprising: Data collection and preliminary calculation module: calculate the influent concentration and benchmark influent concentration of sewage treatment plants in the service area, the carbon source dosage and benchmark carbon source dosage, the phosphorus removal agent dosage and benchmark phosphorus removal agent dosage; Benchmark operation and maintenance cost calculation module: determine the benchmark operation and maintenance cost of the sewage collection and treatment system in the service area; Weight coefficient determination module: Combined with the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage, the weight coefficient of the influent concentration of the sewage treatment plant is determined. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; Reward ratio determination module: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; Service fee calculation module: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model. A computer device comprising: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the sewage collection and treatment service fee calculation method aimed at improving quality and reducing consumption is implemented.

[0041] The present invention takes into account the sewage pipe network and the entire sewage treatment system and their linkage effects, and proposes a sewage collection and treatment service fee accounting model aimed at improving quality and reducing consumption. It uses the improvement of influent concentration and the saving of chemicals as important parameters for measuring the improvement of quality and reduction of consumption in sewage collection and treatment, and encourages sewage collection and treatment units to improve service efficiency and quality, save cost investment, and maximize environmental and economic benefits, thereby providing support for the formation of a healthy and sustainable development of urban water environment and a virtuous cycle in the sewage collection and treatment industry market.

[0042] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that The following steps are involved: S1: Calculate the influent concentration and benchmark influent concentration, carbon source dosage and benchmark carbon source dosage, phosphorus removal agent dosage and benchmark phosphorus removal agent dosage of the sewage treatment plant in the service area; S2: Determine the baseline operation and maintenance costs of the sewage collection and treatment system in the service area; S3: Determine the weight coefficient for increasing the influent concentration of the sewage treatment plant based on the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; S4: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; S5: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model.

2. According to claim 1, a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that: In step S1, the influent concentration c of the sewage treatment plant in the service area is the annual average influent BOD concentration of all sewage treatment plants in the service area for calculation. , Daily water intake , the total annual water inflow Q and the number of sewage treatment plants in the area The calculation formula is as follows: ； The baseline influent BOD concentration of the sewage treatment plant in the service area , is the average annual influent concentration of all sewage treatment plants in the area in the previous year, and is calculated by the average daily influent concentration of the sewage treatment plants in the previous year. , daily water intake , Total water intake last year and the number of sewage treatment plants in the area The calculation formula is as follows: 。 3. According to claim 1, a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that: The benchmark operation and maintenance costs of the service area sewage collection and treatment system described in step S2 include the sum of the operation and maintenance costs of the service area sewage collection pipe network and the operation and maintenance costs of the sewage treatment plant.

4. According to claim 1, a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that: The weight coefficient of the sewage treatment plant influent concentration improvement described in step S3 , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient The sum is 1, that is ; When the BOD influent concentration of the sewage treatment plant in the service area is less than 100 mg / L and the centralized collection rate of domestic sewage is less than 70%, When the BOD influent concentration of the sewage treatment plant in the service area is greater than 100 mg / L and the centralized collection rate of domestic sewage is greater than 70%, Get the value.

5. According to claim 1, a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that: In step S4, the reward ratio The determining factors include the current payment status of sewage collection and treatment operation and maintenance service fees in the service area, and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment; The method to determine the reward ratio ε is: (1) Analyze the current payment status: Through market research and cost-benefit analysis, evaluate whether the current service fee payment level is sufficient to motivate service providers to upgrade technology and optimize management; (2) Assess incentive strength: Understand the policy orientation and support strength of the government or relevant departments in the field of sewage collection and treatment; (3) Determine a reasonable reward ratio ε; the reward ratio ε must be able to reflect the current economic situation and effectively respond to the government's policy orientation, thereby achieving the purpose of encouraging service providers to improve quality and reduce consumption.

6. A method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption according to claim 5, characterized in that: In step (3), the process of determining a reasonable reward ratio ε is as follows: collect the operating data of each sewage treatment plant in the service area, including influent concentration, treatment volume, and operating cost; study the latest government policies and incentives in the field of sewage collection and treatment; communicate with industry experts and government officials to obtain professional opinions and suggestions; Using existing data and policy information, the appropriate reward ratio ε is calculated through mathematical models or simulation tools.

7. According to claim 1, a method, system and model for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption, characterized in that: The calculation model of the sewage collection and treatment system operation and maintenance service fee in step S5 is: ； Among them, F is the operation and maintenance service fee of the sewage collection and treatment system; Baseline operation and maintenance costs for the sewage collection and treatment system in the service area; is the influent concentration of the sewage treatment plant; It is the baseline influent concentration of the sewage treatment plant; The total amount of carbon source added to the sewage treatment plant; It is the total amount of carbon source baseline dosage for sewage treatment plants; The total amount of phosphorus removal agent added to the sewage treatment plant; It is the total amount of base dosage of phosphorus removal agent in sewage treatment plant; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption.

8. A sewage collection and treatment service fee calculation model with the goal of improving quality and reducing consumption, characterized by: The calculation formula is as follows: ； in, F is the operation and maintenance service fee of the sewage collection and treatment system; Baseline operation and maintenance costs for the sewage collection and treatment system in the service area; is the influent concentration of the sewage treatment plant; It is the baseline influent concentration of the sewage treatment plant; The total amount of carbon source added to the sewage treatment plant; It is the total amount of carbon source baseline dosage for sewage treatment plants; The total amount of phosphorus removal agent added to the sewage treatment plant; It is the total amount of base dosage of phosphorus removal agent in sewage treatment plant; Increase the weight coefficient for the influent concentration of the sewage treatment plant; It is the weight coefficient of carbon source reagent saving in sewage treatment plant; It is the weight coefficient of phosphorus removal agent saving in sewage treatment plants; Reward ratio for improving quality and reducing consumption.

9. A sewage collection and treatment service fee accounting system with the goal of improving quality and reducing consumption, characterized by: include: Data collection and preliminary calculation module: calculate the influent concentration and benchmark influent concentration of sewage treatment plants in the service area, the carbon source dosage and benchmark carbon source dosage, the phosphorus removal agent dosage and benchmark phosphorus removal agent dosage; Benchmark operation and maintenance cost calculation module: determine the benchmark operation and maintenance cost of the sewage collection and treatment system in the service area; Weight coefficient determination module: Combined with the centralized collection rate of urban domestic sewage, the influent concentration of the sewage treatment plant, and the direct discharge and overflow of sewage, the weight coefficient of the influent concentration of the sewage treatment plant is determined. , Carbon source agent saving weight coefficient and phosphorus removal agent saving weight coefficient ; Reward ratio determination module: Determine the reward ratio based on the current payment status of sewage collection and treatment operation and maintenance service fees in the service area and the incentives of relevant competent departments for improving the quality and reducing consumption of sewage collection and treatment. ; Service fee calculation module: Calculate the sewage collection and treatment service fees in the service area based on the sewage collection and treatment system operation and maintenance service fee calculation model.

10. A computer device, characterized in that: include: one or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, a method for calculating sewage collection and treatment service fees with the goal of improving quality and reducing consumption as described in any one of claims 1 to 9 is implemented.

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