Method, device and computer equipment for determining negotiated discharge limit value of refractory wastewater

Abstract

The present application relates to a method, device and computer equipment for determining the negotiated indirect emission limit of difficult-to-degrade wastewater. The method includes: obtaining the concentration data of each pollutant at the inlet of the sewage treatment plant, the treatment concentration data of each pollutant discharged by the sewage treatment plant and the average flow rate of wastewater, and the wastewater discharge flow rate of each enterprise, and calculating the emission concentration limit of each pollutant of the sewage treatment plant; calculating the removal efficiency of the sewage treatment plant for each pollutant, and based on the emission concentration limit of each pollutant of the sewage treatment plant, determining the most stringent emission concentration limit of each pollutant of the sewage treatment plant; calculating the maximum influent load of the sewage treatment plant for each pollutant, thereby identifying the allocable influent load of the sewage treatment plant for each pollutant, and calculating the negotiated indirect emission limit of each pollutant based on the allocable influent load of each pollutant and the wastewater discharge flow rate of each enterprise. The use of this method can improve the practicality and accuracy of the determined negotiated indirect emission limit.

Description

Technical Field

[0001] The present application relates to the technical field of artificial intelligence and determination of negotiated indirect discharge limits for refractory wastewater, and in particular to a method, apparatus and computer equipment for determining negotiated indirect discharge limits for wastewater. Background Art

[0002] There are two main destinations for corporate wastewater discharge: direct discharge (abbreviated as "direct discharge"), where pollutants are discharged directly into environmental water bodies. The other is indirect discharge (abbreviated as "indirect discharge"), where wastewater is discharged to downstream sewage treatment plants for treatment, including through centralized sewage treatment facilities within industrial parks or to downstream urban sewage treatment plants. To reduce carbon emissions, allowing companies to negotiate and agree on indirect emission limits with downstream sewage treatment plants based on the types and properties of pollutants discharged and the treatment capacity of downstream sewage treatment plants is a powerful measure to promote a win-win situation for both the environment and the economy. Therefore, determining negotiated indirect emission limits is a current research focus.

[0003] Traditionally, negotiated indirect emission limits are determined by testing the maximum acceptable pollutant concentration at the sewage treatment plant. This involves continuously adjusting the pollutant concentration in the wastewater discharged by upstream enterprises and testing the maximum acceptable concentration of that pollutant at the downstream sewage treatment plant to determine the negotiated emission concentration limit. This method requires constant adjustment of the upstream enterprise's wastewater discharge concentration, resulting in long testing cycles and operational difficulties, which in turn leads to low accuracy in determining negotiated indirect emission limits. Summary of the Invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for determining negotiated indirect emission limits of pollutants and wastewater in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for determining the negotiated discharge limit value of refractory wastewater. The method comprises:

[0006] Obtaining concentration data of each pollutant at the inlet of the sewage treatment plant, treated concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculating the discharge concentration limit of each pollutant by the sewage treatment plant based on the wastewater discharge flow rate of each enterprise;

[0007] Calculating the removal efficiency of the sewage treatment plant for each pollutant based on the concentration data of each pollutant and the treatment concentration data of each pollutant, and determining the most stringent discharge concentration limit of each pollutant by the sewage treatment plant based on the discharge concentration limit of each pollutant by the sewage treatment plant;

[0008] Calculate the maximum influent load of the sewage treatment plant for each pollutant based on the most stringent discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant;

[0009] Based on the maximum influent load of the sewage treatment plant for each pollutant, the allocable influent load of the sewage treatment plant for each pollutant is identified, and based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise, the negotiated indirect emission limit of each pollutant is calculated.

[0010] Optionally, the calculation of the discharge concentration limit of each pollutant of the sewage treatment plant based on the wastewater discharge flow of each enterprise includes:

[0011] Collect the emission standard concentration limit values ​​of the pollutants, and set the emission standard concentration limit values ​​of the pollutants for which no emission standard concentration limit values ​​exist as zero;

[0012] Collecting the product value of the benchmark water discharge volume and the product production capacity, and determining the wastewater flow value of each enterprise based on the relationship between the wastewater discharge flow of each enterprise and the product value;

[0013] Based on the emission standard concentration limit of each pollutant and the wastewater flow value of each enterprise, the emission concentration limit of each pollutant of the sewage treatment plant is calculated through the emission concentration limit algorithm.

[0014] Optionally, determining the strictest emission concentration limit for each pollutant of the sewage treatment plant based on the emission concentration limit for each pollutant of the sewage treatment plant includes:

[0015] Collecting emission standard limits of each of the pollutants, and identifying the relationship between the emission concentration limit of each of the pollutants and the emission standard limit of each of the pollutants;

[0016] Based on the size relationships, the most stringent emission concentration limit for each pollutant of the sewage treatment plant is determined.

[0017] Optionally, the calculation of the maximum influent load of the sewage treatment plant for each pollutant based on the strictest discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant includes:

[0018] Determining the discharge load of each pollutant based on the most stringent discharge concentration limit of each pollutant set by the sewage treatment plant and the average flow rate of wastewater discharged by the sewage treatment plant;

[0019] Based on the discharge load of each of the pollutants and the removal efficiency of the sewage treatment plant for each pollutant, the maximum influent load of the sewage treatment plant for each pollutant is calculated.

[0020] Optionally, the identifying the allocable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of the sewage treatment plant for each pollutant includes:

[0021] The safety factor of each pollutant is collected, and based on the maximum influent load of each pollutant and the safety factor of each pollutant, the allocable influent load of the sewage treatment plant to each pollutant is calculated.

[0022] Optionally, the calculation of the negotiated indirect emission limit for each pollutant based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise includes:

[0023] Collecting pollutant emission inventories from each enterprise, and identifying the number of enterprises corresponding to each pollutant based on the pollutant emission inventories of each enterprise;

[0024] Based on the number of enterprises corresponding to each of the pollutants, the allocable influent load of each of the pollutants, and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit for each pollutant is calculated separately through the indirect emission limit algorithm.

[0025] On the second aspect, the present application also provides a device for determining negotiated indirect emission limits of pollutants and wastewater.

[0026] The device comprises:

[0027] an acquisition module, configured to obtain concentration data of each pollutant at the inlet of the sewage treatment plant, treated concentration data of each pollutant discharged by the sewage treatment plant, an average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculate the discharge concentration limit of each pollutant by the sewage treatment plant based on the wastewater discharge flow rate of each enterprise;

[0028] a determination module, configured to calculate the removal efficiency of the sewage treatment plant for each pollutant based on the concentration data of each pollutant and the treatment concentration data of each pollutant, and determine the most stringent emission concentration limit of the sewage treatment plant for each pollutant based on the emission concentration limit of the sewage treatment plant for each pollutant;

[0029] a first calculation module, configured to calculate a maximum influent load of the sewage treatment plant for each pollutant based on the most stringent discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and an average flow rate of wastewater discharged from the sewage treatment plant;

[0030] The second calculation module is used to identify the allocable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of the sewage treatment plant for each pollutant, and calculate the negotiated indirect emission limit of each pollutant based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise.

[0031] Optionally, the acquisition module is specifically configured to:

[0032] Collect the emission standard concentration limit values ​​of the pollutants, and set the emission standard concentration limit values ​​of the pollutants for which no emission standard concentration limit values ​​exist as zero;

[0033] Collecting the product value of the benchmark water discharge volume and the product production capacity, and determining the wastewater flow value of each enterprise based on the relationship between the wastewater discharge flow of each enterprise and the product value;

[0034] Based on the emission standard concentration limit of each pollutant, the wastewater flow value of each enterprise, and the emission concentration limit algorithm, the emission concentration limit of each pollutant of the sewage treatment plant is calculated.

[0035] Optionally, the determining module is specifically configured to:

[0036] Collecting emission standard limits of each of the pollutants, and identifying the relationship between the emission concentration limit of each of the pollutants and the emission standard limit of each of the pollutants;

[0037] Based on the size relationships, the most stringent emission concentration limit for each pollutant of the sewage treatment plant is determined.

[0038] Optionally, the first calculation module is specifically configured to:

[0039] Determining the discharge load of each pollutant based on the most stringent discharge concentration limit of each pollutant set by the sewage treatment plant and the average flow rate of wastewater discharged by the sewage treatment plant;

[0040] Based on the discharge load of each of the pollutants and the removal efficiency of the sewage treatment plant for each pollutant, the maximum influent load of the sewage treatment plant for each pollutant is calculated.

[0041] Optionally, the second calculation module is specifically configured to:

[0042] The safety factor of each pollutant is collected, and based on the maximum influent load of each pollutant and the safety factor of each pollutant, the allocable influent load of the sewage treatment plant to each pollutant is calculated.

[0043] Optionally, the second calculation module is specifically configured to:

[0044] Collecting pollutant emission inventories from each enterprise, and identifying the number of enterprises corresponding to each pollutant based on the pollutant emission inventories of each enterprise;

[0045] Based on the number of enterprises corresponding to each of the pollutants, the allocable influent load of each of the pollutants, and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit for each pollutant is calculated separately through the indirect emission limit algorithm.

[0046] In a third aspect, the present application provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the methods described in the first aspect when executing the computer program.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of any one of the methods in the first aspect.

[0048] In a fifth aspect, the present application provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0049] The above-mentioned method, device and computer equipment for determining the negotiated discharge limit value of difficult-to-degrade wastewater obtains the concentration data of each pollutant at the water inlet of the sewage treatment plant, the treatment concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculates the discharge concentration limit value of each pollutant by the sewage treatment plant based on the concentration limit value of each pollutant discharge standard and the discharge flow rate data of the wastewater of each enterprise; calculates the removal efficiency of each pollutant by the sewage treatment plant based on the concentration data of each pollutant and the treatment concentration data of each pollutant, and calculates the removal efficiency of each pollutant by the sewage treatment plant based on the sewage treatment plant. The most stringent emission concentration limit for each pollutant at the sewage treatment plant is determined based on the emission concentration limit of each pollutant at the sewage treatment plant; the maximum influent load of each pollutant at the sewage treatment plant is calculated based on the most stringent emission concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant; based on the maximum influent load of each pollutant at the sewage treatment plant, the allocable influent load of the sewage treatment plant for each pollutant is identified, and based on the allocable influent load of each pollutant and the wastewater discharge flow rate of each enterprise, the negotiated indirect emission limit for each pollutant is calculated. This solution comprehensively considers the treatment capacity of the sewage treatment system and the concentration data of each pollutant at the sewage treatment plant inlet, so that enterprises do not need to treat their wastewater to the indirect emission standard limit, but can discharge it into the sewage treatment plant when the negotiated indirect emission limit is reached, thereby comprehensively reducing the wastewater treatment costs of enterprises. Furthermore, the plan reversely calculates the influent load of each pollutant entering the sewage treatment plant based on the most stringent emission concentration limit for each pollutant, thereby determining the negotiated indirect emission limit for each pollutant, ensuring that wastewater discharged from the sewage treatment plant does not affect the aquatic environmental quality of the receiving water body. Finally, this plan comprehensively considers the sewage treatment plant's treatment capacity, factors affecting treatment costs such as the most stringent emission concentration limit, and factors affecting environmental quality before determining the negotiated indirect emission limit for each pollutant, thereby improving the practicality and accuracy of the determined negotiated indirect emission limits. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic flow chart of a method for determining indirect emission limits for refractory wastewater through negotiation in one embodiment;

[0051] Figure 2 A schematic diagram of a process for determining an example of negotiating indirect discharge limits for refractory wastewater in one embodiment;

[0052] Figure 3 This is a structural block diagram of a device for determining indirect emission limits for refractory wastewater according to an embodiment;

[0053] Figure 4 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0055] The method for determining the negotiated indirect emission limit of pollutants and wastewater provided in the embodiment of the present application can be applied to the application environment of determining the negotiated indirect emission limit of wastewater. The method can be applied to a terminal, a server, or a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. Among them, the terminal can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, etc. Among them, the terminal comprehensively considers the processing capacity of the sewage treatment system and the concentration data of each pollutant at the inlet of the sewage treatment plant, so that the enterprise does not need to treat the wastewater to the indirect emission standard limit, but can discharge it into the sewage treatment plant when the negotiated indirect emission limit is reached, thereby comprehensively reducing the enterprise's wastewater treatment costs. In addition, the scheme reversely deduces the influent load of each pollutant entering the sewage treatment plant based on the most stringent emission concentration limit of each pollutant, thereby determining the negotiated indirect emission limit of each pollutant, ensuring that the wastewater discharged by the sewage treatment plant does not affect the water environment quality of the receiving water body. Finally, this plan determines the negotiated indirect emission limits for each pollutant by comprehensively considering the treatment capacity of the sewage treatment system, the most stringent emission concentration limits and other factors affecting treatment costs, as well as factors affecting environmental quality, thereby improving the practicality and accuracy of the determined negotiated indirect emission limits.

[0056] In one embodiment, Figure 1 As shown, a method for determining the negotiated indirect discharge limit of wastewater is provided, which is described by taking the application of the method to a terminal as an example, and includes the following steps:

[0057] Step S101, obtain the concentration data of each pollutant at the water inlet of the sewage treatment plant, the treatment concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculate the discharge concentration limit of each pollutant of the sewage treatment plant based on the wastewater discharge flow rate of each of the said enterprises.

[0058] In this embodiment, the terminal collects wastewater samples from the water inlet of the sewage treatment plant and detects the concentration data of each pollutant in the wastewater. Then, the terminal receives the wastewater discharge flow of each enterprise sent by each enterprise client, wherein each enterprise is an enterprise upstream of the sewage treatment plant. Then, the terminal receives the pollutant treatment data transmitted by the sewage treatment plant, obtains the treatment concentration data of each pollutant discharged by the sewage treatment plant, and the average flow rate of wastewater discharged by the sewage treatment plant. The sewage treatment plant is a sewage treatment plant. Then, based on the wastewater discharge flow of each of the said enterprises, the terminal calculates the discharge concentration limit of each pollutant of the sewage treatment plant. The pollutants are substances produced and discharged by each enterprise that pollute water sources and the environment. The specific calculation process will be described in detail later. The wastewater in the sewage treatment plant includes pollutants that are difficult to degrade and pollutants that are easily degradable. The pollutants that are difficult to degrade include but are not limited to heavy metal pollutants and difficult-to-degrade organic matter.

[0059] Step S102, based on the concentration data of each pollutant and the treatment concentration data of each pollutant, calculate the removal efficiency of the sewage treatment plant for each pollutant, and based on the emission concentration limit of each pollutant by the sewage treatment plant, determine the most stringent emission concentration limit of each pollutant by the sewage treatment plant.

[0060] In this embodiment, the terminal calculates the sewage treatment plant's removal efficiency for each pollutant based on the concentration data and treatment concentration data for each pollutant. The terminal then compares the sewage treatment plant's discharge concentration limits for each pollutant with the standard concentration limits for each pollutant to determine the plant's most stringent discharge concentration limits for each pollutant. The specific calculation and comparison processes will be described in detail later.

[0061] Specifically, the pollutant removal efficiency is calculated using the concentration of the pollutant and the concentration of the corresponding pollutant at the outlet. The calculation formula is as follows:

[0062]

[0063] Where:

[0064] R j is the removal efficiency of the sewage treatment plant for the jth pollutant, %;

[0065] is the average concentration of the jth pollutant;

[0066] for It is necessary to collect the concentration data of the jth pollutant in multiple samples at the water inlet. The sample collection method is recommended to be obtained by daily sampling, such as sampling at the same sampling point for 10 to 30 consecutive days. For enterprises that have installed automatic monitoring facilities at the water inlet, they can use automatic monitoring data or conduct actual manual sampling monitoring to obtain data. The average value of the pollutant concentration of the samples over 10 to 30 days is used to obtain I j , mg / L;

[0067] The average concentration of pollutants at the effluent of the sewage treatment plant is obtained by collecting the concentration data of the jth pollutant from multiple samples at the effluent and calculating the average concentration of the pollutant at the effluent, in mg / L.

[0068] for It is necessary to collect the concentration data of the jth pollutant in multiple samples at the outlet. It is recommended to collect samples daily and keep the time period and method of collecting water samples at the water inlet consistent with that at the water inlet to avoid the result errors caused by the inconsistent time period between manual monitoring and automatic monitoring. The outlet should also be manually monitored and water samples collected for 10 days, and the results should be

[0069] Step S103 , calculating the maximum influent load of the sewage treatment plant for each pollutant based on the strictest discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant.

[0070] In this embodiment, the terminal calculates the maximum influent load of the sewage treatment plant for each pollutant based on the plant's strictest discharge concentration limit, the plant's removal efficiency for each pollutant, and the average wastewater flow rate discharged from the plant. The maximum influent load is the maximum influent load of the pollutant that the sewage treatment plant can process while meeting the strictest discharge concentration limit. The specific calculation process will be described in detail later.

[0071] Step S104: Based on the maximum influent load of the sewage treatment plant for each pollutant, the allocable influent load of the sewage treatment plant for each pollutant is identified, and based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise, the negotiated indirect emission limit of each pollutant is calculated.

[0072] In this embodiment, the terminal identifies the allocable inlet load of the sewage treatment plant for each pollutant based on the maximum inlet load of the sewage treatment plant for each pollutant, and calculates the negotiated indirect emission limit for each pollutant based on the allocable inlet load of each pollutant and the wastewater discharge flow of each enterprise. Among them, the allocable inlet load changes with the change of the safety factor specified by the staff, wherein the safety factor is used to adjust the actual inlet load of the sewage treatment plant for each pollutant, to take into account the errors caused by the accuracy of the data, and the fact that the sewage treatment plant may continue to connect enterprises that discharge this pollutant in the future, and to reserve a portion of the maximum allowable inlet load for allocation, and determine the allocable inlet load by setting a certain proportion of the safety factor. The negotiated indirect emission limit is the emission limit of each pollutant discharged to the sewage treatment plant.

[0073] Based on the above scheme, by comprehensively considering the treatment capacity of the sewage treatment system and the concentration data of each pollutant at the sewage treatment plant's inlet, the negotiated indirect emission limits between the enterprise and the sewage treatment plant were determined. This eliminates the need for the enterprise to treat its wastewater to the indirect emission standard limit. Instead, it can discharge it into the sewage treatment plant once it reaches the negotiated indirect emission limit, thereby reducing the enterprise's wastewater treatment costs. Furthermore, this scheme reversely calculates the influent load of each pollutant entering the sewage treatment plant based on the most stringent emission concentration limit for each pollutant to determine the negotiated indirect emission limit for each pollutant, ensuring that wastewater discharged from the sewage treatment plant does not affect the aquatic environmental quality of the receiving water body. Finally, this scheme comprehensively considers factors influencing treatment costs, such as the treatment capacity of the sewage treatment system, enterprise wastewater discharge flow data, and the most stringent emission concentration limit, as well as factors affecting environmental quality, before determining the negotiated indirect emission limit for each pollutant, thereby improving the practicality and accuracy of the determined negotiated indirect emission limits.

[0074] Optionally, based on the wastewater discharge flow of each enterprise, the emission concentration limit of each pollutant of the sewage treatment plant is calculated, including: collecting the emission standard concentration limit of each pollutant, and setting the emission standard concentration limit of pollutants that do not have emission standard concentration limits as zero; collecting the product value of the benchmark discharge volume and the product production capacity, and determining the wastewater flow value of each enterprise based on the relationship between the wastewater discharge flow of each enterprise and the product value; based on the emission standard concentration limit of each pollutant, the wastewater flow value of each enterprise, and the emission concentration limit algorithm, the emission concentration limit of each pollutant of the sewage treatment plant is calculated.

[0075] In this embodiment, the terminal collects the emission standard concentration limit for each pollutant and sets the emission standard concentration limit for pollutants for which no emission standard concentration limit exists as zero. The terminal collects the product of the unit product baseline discharge volume and the product production capacity and determines the wastewater flow rate for each enterprise based on the relationship between the wastewater discharge flow rate and the product value. The terminal then calculates the emission concentration limit for each pollutant at the sewage treatment plant using the emission concentration limit algorithm based on the emission standard concentration limit for each pollutant and the wastewater flow rate data for each enterprise.

[0076] Specifically, based on the principle that the total amount of emissions does not increase, the calculation formula for the discharge concentration limit at the sewage treatment plant outlet is as follows:

[0077]

[0078] Where:

[0079] C j,折算 is the converted discharge concentration limit of the jth water pollutant of the sewage treatment plant, mg / L;

[0080] Q i The wastewater flow rate of the i-th enterprise is m 3 / d;

[0081] For Q i , the actual wastewater flow rate Q discharged by the enterprise into the sewage treatment plant should be 实际 , compared with the product of the benchmark discharge volume per unit product and the product production capacity specified in the applicable discharge standards when the enterprise handles wastewater on its own:

[0082] If Q 实际 >Unit product base displacement × product capacity, then Q i =Base displacement per unit product × product production capacity

[0083] If Q 实际 <Unit product base displacement × product capacity, then Q i =Q 实际

[0084] C ij,标准 The discharge concentration limit of the jth water pollutant in the discharge standard applicable to the i-th enterprise when it treats its own wastewater, mg / L. If there is no provision in the discharge standard or it is stipulated as "not detectable", C ij,标准 Take zero;

[0085] m is the number of enterprises discharging wastewater into the sewage treatment plant, dimensionless.

[0086] Based on the above scheme, by calculating the emission concentration limit of each pollutant of the sewage treatment plant, the accuracy of identifying the treatment upper limit of each pollutant in sewage treatment is improved.

[0087] Optionally, based on the emission concentration limit of each pollutant at the sewage treatment plant, the most stringent emission concentration limit of each pollutant at the sewage treatment plant is determined, including: collecting the emission standard limit of each pollutant, and identifying the relationship between the emission concentration limit of each pollutant and the emission standard limit of each pollutant; based on each size relationship, determining the most stringent emission concentration limit of each pollutant at the sewage treatment plant.

[0088] In this embodiment, the terminal collects the emission standard limits for each pollutant from the sewage treatment plant and identifies the relationship between the emission concentration limit for each pollutant and the emission standard limit for each pollutant. Based on these relationships, the terminal then determines the sewage treatment plant's most stringent emission concentration limit for each pollutant.

[0089] Specifically, C j′ The most stringent discharge concentration limit implemented by sewage treatment plants, mg / L;

[0090] For C j′ , the national or local water pollutant discharge standard limits (C j,标准 ) and the emission concentration limit calculated based on the principle of no increase in total amount (C j,折算 ) for comparison:

[0091] If C j,标准 ≥C j,折算 , then C j′ =C j,折算

[0092] If C j,标准 <C j,折算 , then C j′ =C j,标准

[0093] Based on the above scheme, by identifying the relationship between the emission concentration limit of each pollutant and the emission standard limit of each pollutant, the most stringent emission concentration limit of each pollutant for the sewage treatment plant is determined, thereby improving the accuracy of the determined most stringent emission concentration limit of each pollutant for the sewage treatment plant.

[0094] Optionally, the maximum influent load of the sewage treatment plant on each pollutant is calculated based on the most stringent emission concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged from the sewage treatment plant, including: determining the emission load of each pollutant based on the most stringent emission concentration limit of the sewage treatment plant for each pollutant and the average flow rate of wastewater discharged from the sewage treatment plant; calculating the maximum influent load of the sewage treatment plant on each pollutant based on the emission load of each pollutant and the removal efficiency of the sewage treatment plant for each pollutant.

[0095] In this embodiment, the terminal determines the discharge load of each pollutant based on the sewage treatment plant's most stringent discharge concentration limit for each pollutant and the average wastewater flow rate discharged by the sewage treatment plant. The terminal then calculates the maximum influent load of the sewage treatment plant for each pollutant based on the discharge load of each pollutant and the sewage treatment plant's removal efficiency for each pollutant.

[0096] Specifically, the maximum allowable influent load of a sewage treatment plant is the maximum pollutant load that the sewage treatment plant can accept at its inlet without violating the discharge concentration limits implemented by the sewage treatment plant. The calculation formula is as follows:

[0097]

[0098] Where:

[0099] L j is the maximum allowable influent load of the sewage treatment plant based on the most stringent discharge limit, g / d;

[0100] C j′ The most stringent discharge concentration limit implemented by sewage treatment plants, mg / L;

[0101] is the average flow rate of wastewater at the sewage treatment plant outlet, m 3 / d;

[0102] for The monitoring of wastewater flow should be consistent with the sampling period of pollutant inlet and outlet concentrations when calculating pollutant removal efficiency. If water samples are collected from the inlet and outlet for 10 consecutive days to obtain pollutant concentrations, the average daily wastewater flow rate of the 10 days should be used as the

[0103] R j is the removal efficiency of the sewage treatment plant for the jth pollutant, %.

[0104] Based on the above scheme, while meeting the requirements of the national or local water pollutant emission standards implemented, that is, the pollutant concentration at the sewage treatment plant outlet should be less than the emission limit requirements specified in the water pollutant emission standards, the maximum water inlet load of the sewage treatment plant for each pollutant is calculated to ensure that the sewage discharged from the sewage treatment plant does not affect the water environment quality of the receiving water body.

[0105] Optionally, based on the maximum influent load of the sewage treatment plant for each pollutant, identify the allocable influent load of the sewage treatment plant for each pollutant, including:

[0106] The safety factor of each pollutant is collected, and based on the maximum influent load of each pollutant and the safety factor of each pollutant, the allocable influent load of the sewage treatment plant for each pollutant is calculated.

[0107] In this embodiment, the terminal collects the safety factor of each pollutant, and calculates the allocable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of each pollutant and the safety factor of each pollutant.

[0108] Specifically, the calculation formula for the allocable pollutant influent load is as follows:

[0109] Lj′=Lj×(1-SF) Formula (4)

[0110] Where:

[0111] L j′ is the influent load that can be allocated to the jth pollutant of the sewage treatment plant, g / d;

[0112] SF is the safety factor;

[0113] This coefficient can be adjusted according to the actual situation of the wastewater received by the enterprise, and the recommended value is 10% to 20%.

[0114] Based on the above scheme, by adjusting the allocable influent load corresponding to each pollutant actually entering the sewage treatment plant, the sewage treatment plant's treatment operability for each pollutant and the fault tolerance rate of the influent load for each pollutant are improved.

[0115] Optionally, the negotiated indirect emission limit for each pollutant is calculated based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise, including: collecting the pollutant emission list of each enterprise, and identifying the number of enterprises corresponding to each pollutant based on the pollutant emission list of each enterprise; based on the number of enterprises corresponding to each pollutant, the allocable influent load of each pollutant, and the wastewater discharge flow of each enterprise, the negotiated indirect emission limit for each pollutant is calculated separately through the indirect emission limit algorithm.

[0116] In this embodiment, the terminal collects the pollutant emission inventory of each enterprise and, based on each enterprise's pollutant emission inventory, identifies the number of enterprises corresponding to each pollutant. The terminal then calculates the negotiated indirect emission limit for each pollutant using an indirect emission limit algorithm based on the number of enterprises corresponding to each pollutant, the allocable influent load for each pollutant, and the wastewater discharge flow rate of each enterprise. The pollutant emission inventory includes the name of each pollutant actually emitted by the enterprise and the emission data for each pollutant.

[0117] Specifically, the calculation formula for the negotiated indirect emission limit is as follows:

[0118]

[0119] Where:

[0120] C j,协商The indirect emission concentration limit of the jth pollutant negotiated between the enterprise and the sewage treatment plant, mg / L;

[0121] Q kj is the wastewater flow of the enterprise that discharges the jth pollutant, m 3 / d;

[0122] n is the number of enterprises that emit the jth pollutant and are received by the sewage treatment plant.

[0123] For wastewater with multiple negotiated indirect emission limits, the negotiated indirect emission limits for each pollutant should be calculated one by one.

[0124] Based on the above plan, by comprehensively considering the treatment capacity of the sewage treatment system, the influencing factors of treatment costs such as the most stringent emission concentration limit, and the influencing factors of environmental quality, the negotiated indirect emission limits of each pollutant are determined, which improves the practicality and accuracy of the determined negotiated indirect emission limits.

[0125] This application also provides an example of determining the negotiated indirect discharge limit for refractory wastewater, such as Figure 2 As shown, the specific processing process includes the following steps:

[0126] Step S201 , obtaining the concentration data of each pollutant at the inlet of the sewage treatment plant, the treated concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise.

[0127] Step S202 : collecting the emission standard concentration limit of each pollutant, and setting the emission standard concentration limit of the pollutant for which no emission standard concentration limit exists as zero.

[0128] Step S203: collecting the product value of the benchmark water discharge volume and the product capacity, and determining the wastewater flow value of each enterprise based on the relationship between the wastewater discharge flow of each enterprise and the product value.

[0129] Step S204 , based on the emission standard concentration limit of each pollutant and the wastewater flow value of each enterprise, the emission concentration limit algorithm is used to calculate the emission concentration limit of each pollutant of the sewage treatment plant.

[0130] Step S205 : calculating the removal efficiency of each pollutant by the sewage treatment plant based on the concentration data of each pollutant and the treatment concentration data of each pollutant.

[0131] Step S206 , collecting the emission standard limit values ​​of each pollutant, and identifying the relationship between the emission concentration limit value of each pollutant and the emission standard limit value of each pollutant.

[0132] Step S207: Based on the magnitude relationships, the strictest emission concentration limit of each pollutant in the sewage treatment plant is determined.

[0133] Step S208 : determining the discharge load of each pollutant based on the strictest discharge concentration limit of each pollutant by the sewage treatment plant and the average flow rate of wastewater discharged by the sewage treatment plant.

[0134] Step S209 : calculating the maximum influent load of the sewage treatment plant for each pollutant based on the discharge load of each pollutant and the removal efficiency of the sewage treatment plant for each pollutant.

[0135] In step S210 , the safety factor of each pollutant is collected, and based on the maximum influent load of each pollutant and the safety factor of each pollutant, the allocable influent load of the sewage treatment plant for each pollutant is calculated.

[0136] Step S211: Collect the pollutant emission inventory of each enterprise, and identify the number of enterprises corresponding to each pollutant based on the pollutant emission inventory of each enterprise.

[0137] Step S212 , based on the number of enterprises corresponding to each pollutant, the allocable influent load of each pollutant, and the wastewater discharge flow of each enterprise, the negotiated indirect emission limit value for each pollutant is calculated using an indirect emission limit value algorithm.

[0138] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order limit for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0139] Based on the same inventive concept, embodiments of the present application also provide a device for determining a wastewater negotiation limit value for implementing the aforementioned method for determining a wastewater negotiation limit value for non-degradable wastewater. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more embodiments of the device for determining a wastewater negotiation limit value provided below can be found in the limitations of the method for determining a wastewater negotiation limit value above and will not be repeated here.

[0140] In one embodiment, Figure 3As shown, a device for determining a negotiated inter-discharge limit value for refractory wastewater is provided, comprising: an acquisition module 310, a determination module 320, a first calculation module 330, and a second calculation module 340, wherein:

[0141] An acquisition module 310 is configured to acquire concentration data of each pollutant, treatment concentration data of each pollutant discharged by a sewage treatment plant, an average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculate the discharge concentration limit of each pollutant by the sewage treatment plant based on the wastewater discharge flow rate of each enterprise;

[0142] a determination module 320 for calculating the removal efficiency of the sewage treatment plant for each pollutant based on the concentration data of each pollutant and the treatment concentration data of each pollutant, and determining the most stringent discharge concentration limit of the sewage treatment plant for each pollutant based on the discharge concentration limit of the sewage treatment plant for each pollutant;

[0143] A first calculation module 330 is configured to calculate the maximum influent load of the sewage treatment plant for each pollutant based on the most stringent discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant;

[0144] The second calculation module 340 is used to identify the allocable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of the sewage treatment plant for each pollutant, and calculate the negotiated indirect emission limit of each pollutant based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise.

[0145] Optionally, the acquisition module 310 is specifically configured to:

[0146] Collect the emission standard concentration limit values ​​of the pollutants, and set the emission standard concentration limit values ​​of the pollutants for which no emission standard concentration limit values ​​exist as zero;

[0147] Collecting the actual wastewater flow rate discharged into the sewage treatment plant by each of the enterprises, as well as the product of the unit product benchmark discharge volume and the product production capacity, and determining the wastewater flow rate value of each of the enterprises based on the relationship between the actual wastewater flow rate of each of the enterprises and the product value;

[0148] Based on the emission standard concentration limit of each pollutant and the wastewater flow value of each enterprise, the emission concentration limit of each pollutant of the sewage treatment plant is calculated through the emission concentration limit algorithm.

[0149] Optionally, the determining module 320 is specifically configured to:

[0150] Collect the emission standard limits of each pollutant of the sewage treatment plant, and identify the relationship between the emission concentration limit of each pollutant of the sewage treatment plant and the emission standard limit of each pollutant of the sewage treatment plant;

[0151] Based on the size relationships, the most stringent emission concentration limit for each pollutant of the sewage treatment plant is determined.

[0152] Optionally, the first calculation module 330 is specifically configured to:

[0153] Determining the discharge load of each pollutant based on the most stringent discharge concentration limit of each pollutant set by the sewage treatment plant and the average flow rate of wastewater discharged by the sewage treatment plant;

[0154] Based on the discharge load of each of the pollutants and the removal efficiency of the sewage treatment plant for each pollutant, the maximum influent load of the sewage treatment plant for each pollutant is calculated.

[0155] Optionally, the second calculation module 340 is specifically configured to:

[0156] The safety factor of each pollutant is collected, and based on the maximum influent load of each pollutant and the safety factor of each pollutant, the allocable influent load of the sewage treatment plant to each pollutant is calculated.

[0157] Optionally, the second calculation module 340 is specifically configured to:

[0158] Collecting pollutant emission inventories from each enterprise, and identifying the number of enterprises corresponding to each pollutant based on the pollutant emission inventories of each enterprise;

[0159] Based on the number of enterprises corresponding to each of the pollutants, the allocable influent load of each of the pollutants, and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit for each pollutant is calculated separately through the indirect emission limit algorithm.

[0160] Each module in the aforementioned apparatus for determining a negotiated inter-discharge limit for refractory wastewater may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor within a computer device in the form of hardware, or may be stored in a memory within the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0161] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 4As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for determining the negotiated emission limit value of pollutants is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the computer device housing, or an external keyboard, touchpad or mouse.

[0162] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0163] In one embodiment, a computer device is provided, comprising a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps of any one of the methods in the first aspect are implemented.

[0164] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0165] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of any one of the methods of the first aspect when executed by a processor.

[0166] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0167] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0168] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0169] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for determining the negotiated discharge limit value of refractory wastewater, characterized in that: The method comprises: The concentration data of each pollutant at the inlet of the sewage treatment plant, the treatment concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise are obtained, and based on the wastewater discharge flow rate of each enterprise, the discharge concentration limit of each pollutant of the sewage treatment plant is calculated; the calculation formula of the discharge concentration limit is: ； In the above formula: Said is the calculated discharge concentration limit of the jth water pollutant of the sewage treatment plant, mg / L; Said is the wastewater flow value of the i-th enterprise, m 3 / d; For the , the actual wastewater flow rate discharged by the enterprise into the sewage treatment plant , compared with the product of the benchmark discharge per unit product and the product capacity specified in the applicable discharge standards when the enterprise handles wastewater on its own: if >Base displacement per unit product × product capacity, then =Base displacement per unit product × product capacity; if <Unit product base displacement × product capacity, then = ; Said The discharge concentration limit of the jth water pollutant in the discharge standard applicable to the i-th enterprise when it treats its own wastewater, mg / L. If there is no provision in the discharge standard or it is stipulated as "not to be detected", Take zero; The m is the number of enterprises discharging wastewater into the sewage treatment plant, dimension one; Based on the concentration data of each of the pollutants and the treatment concentration data of each of the pollutants, the removal efficiency of the sewage treatment plant for each pollutant is calculated, and based on the discharge concentration limit of each pollutant by the sewage treatment plant, the most stringent discharge concentration limit of each pollutant by the sewage treatment plant is determined; Based on the strictest discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant, the maximum influent load of the sewage treatment plant for each pollutant is calculated; the maximum influent load calculation formula is: ； In the above formula: Said is the maximum permissible influent load of the sewage treatment plant based on the most stringent discharge limit, g / d; Said The most stringent discharge concentration limit implemented by sewage treatment plants, mg / L; Said is the average flow rate of wastewater at the sewage treatment plant outlet, m 3 / d; Said The sampling period of pollutant inlet and outlet concentrations is consistent with that when calculating pollutant removal efficiency; Said is the removal efficiency of the sewage treatment plant for the jth pollutant, %; Based on the maximum influent load of the sewage treatment plant for each pollutant, the allocable influent load of the sewage treatment plant for each pollutant is identified; the calculation formula of the allocable influent load is: ； In the above formula: Said is the influent load that can be allocated to the jth pollutant of the sewage treatment plant, g / d; Said is the safety factor; Based on the allocable influent load of each of the pollutants and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit of each of the pollutants is calculated; the calculation formula of the negotiated indirect emission limit is: ； In the above formula: Said The indirect discharge concentration limit of the jth pollutant negotiated between the enterprise and the sewage treatment plant, mg / L; Said is the wastewater flow rate of the enterprise that discharges the jth pollutant, m 3 / d; Said The number of enterprises emitting the jth pollutant received by the sewage treatment plant.

2. The method according to claim 1, characterized in that The calculation of the discharge concentration limit of each pollutant of the sewage treatment plant based on the wastewater discharge flow of each enterprise includes: Collecting the emission standard concentration limit values ​​of each of the pollutants, and setting the emission standard concentration limit values ​​of pollutants for which no emission standard concentration limit values ​​exist as zero; Collect the product value of the benchmark drainage volume and the product capacity, and determine the wastewater flow value of each enterprise based on the relationship between the wastewater discharge flow of each enterprise and the product value; Based on the emission standard concentration limit of each of the pollutants and the wastewater flow value of each of the enterprises, the emission concentration limit of each pollutant of the sewage treatment plant is calculated through the emission concentration limit algorithm.

3. The method according to claim 1, characterized in that The determining of the most stringent emission concentration limit value of each pollutant by the sewage treatment plant based on the emission concentration limit value of each pollutant by the sewage treatment plant comprises: Collect the emission standard limit values ​​of each of the pollutants, and identify the relationship between the emission concentration limit value of each of the pollutants and the emission standard limit value of each of the pollutants; Based on the size relationships, the most stringent emission concentration limit for each pollutant of the sewage treatment plant is determined.

4. The method according to claim 3, characterized in that The calculation of the maximum influent load of the sewage treatment plant for each pollutant based on the most stringent discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant includes: Determining the discharge load of each of the pollutants based on the most stringent discharge concentration limit of each pollutant by the sewage treatment plant and the average flow rate of wastewater discharged by the sewage treatment plant; Based on the discharge load of each of the pollutants and the removal efficiency of the sewage treatment plant for each of the pollutants, the maximum influent load of the sewage treatment plant for each of the pollutants is calculated.

5. The method according to claim 4, characterized in that The step of identifying the allocatable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of the sewage treatment plant for each pollutant comprises: The safety factor of each of the pollutants is collected, and based on the maximum influent load of each of the pollutants and the safety factor of each of the pollutants, the allocatable influent load of the sewage treatment plant for each of the pollutants is calculated.

6. The method according to claim 5, characterized in that The negotiated indirect emission limit value of each pollutant is calculated based on the allocable influent load of each pollutant and the wastewater discharge flow of each enterprise, including: Collecting pollutant emission inventories of each enterprise, and identifying the number of enterprises corresponding to each pollutant based on the pollutant emission inventories of each enterprise; Based on the number of enterprises corresponding to each of the pollutants, the allocable influent load of each of the pollutants, and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit for each pollutant is calculated separately through the indirect emission limit algorithm.

7. A device for determining the limit of indirect discharge of wastewater by negotiation, characterized in that: The device comprises: The acquisition module is used to obtain the concentration data of each pollutant at the inlet of the sewage treatment plant, the treatment concentration data of each pollutant discharged by the sewage treatment plant, the average flow rate of wastewater discharged by the sewage treatment plant, and the wastewater discharge flow rate of each enterprise, and calculate the discharge concentration limit of each pollutant of the sewage treatment plant based on the wastewater discharge flow rate of each enterprise; the calculation formula of the discharge concentration limit is: ; In the above formula: is the calculated discharge concentration limit of the jth water pollutant of the sewage treatment plant, mg / L; is the wastewater flow value of the i-th enterprise, m 3 / d; for the , the actual wastewater flow rate discharged by the enterprise into the sewage treatment plant , compared with the product of the benchmark discharge per unit product and the product capacity specified in the applicable discharge standard when the enterprise treats wastewater by itself: If >Base displacement per unit product × product capacity, then = unit product base displacement × product capacity; if <Base displacement per unit product × product capacity, then = ; The discharge concentration limit of the jth water pollutant in the discharge standard applicable to the i-th enterprise when it treats its own wastewater, mg / L. If there is no provision in the discharge standard or it is stipulated as "not to be detected", Take zero; m is the number of enterprises that discharge wastewater into the sewage treatment plant, dimension one; A determination module, for calculating the removal efficiency of each pollutant by the sewage treatment plant based on the concentration data of each pollutant and the treatment concentration data of each pollutant by the sewage treatment plant, and determining the most stringent emission concentration limit of each pollutant by the sewage treatment plant based on the emission concentration limit of each pollutant by the sewage treatment plant; The first calculation module is used to calculate the maximum influent load of the sewage treatment plant for each pollutant based on the most stringent discharge concentration limit of the sewage treatment plant, the removal efficiency of the sewage treatment plant for each pollutant, and the average flow rate of wastewater discharged by the sewage treatment plant; the maximum influent load calculation formula is: ; In the above formula: is the maximum allowable influent load of the sewage treatment plant based on the most stringent discharge limit, g / d; The most stringent discharge concentration limit implemented by sewage treatment plants, mg / L; is the average flow rate of wastewater at the sewage treatment plant outlet, m 3 / d; described The sampling period of pollutant inlet and outlet concentrations is consistent with that when calculating pollutant removal efficiency; is the removal efficiency of the sewage treatment plant for the jth pollutant, %; The second calculation module is used to identify the allocable influent load of the sewage treatment plant for each pollutant based on the maximum influent load of the sewage treatment plant for each pollutant; the calculation formula of the allocable influent load is: ; In the above formula: is the influent load that can be allocated to the jth pollutant of the sewage treatment plant, g / d; is the safety factor; Based on the allocable influent load of each of the pollutants and the wastewater discharge flow of each of the enterprises, the negotiated indirect emission limit of each of the pollutants is calculated; the calculation formula of the negotiated indirect emission limit is: ; In the above formula: The indirect discharge concentration limit of the jth pollutant negotiated between the enterprise and the sewage treatment plant, mg / L; is the wastewater flow rate of the enterprise that discharges the jth pollutant, m 3 / d; described The number of enterprises emitting the jth pollutant received by the sewage treatment plant.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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