Waste liquid treatment method for urea hydrolysis system

Abstract

The invention discloses a waste liquid treatment method for a urea hydrolysis system. The waste liquid treatment method comprises the following steps: presetting a discharge period, discharging waste liquid to a storage tank according to the discharge period, obtaining related information of the current waste liquid before treatment, and generating a to-be-treated grade of the waste liquid according to the related information; a waste liquid treatment module of the current waste liquid is selected according to the to-be-treated grade, the current waste liquid is conveyed to the corresponding waste liquid treatment module, a treatment strategy of the current waste liquid is generated, and the treatment strategy comprises treatment parameters of a plurality of waste liquid treatment sub-modules; the method comprises the following steps: processing according to a processing strategy, setting an inspection time length, acquiring actual related information in the inspection time length, generating a processing evaluation value in the inspection time length, judging whether a correction instruction corresponding to a processing parameter is generated or not according to the processing evaluation value, timely finding and adjusting the processing strategy, and improving the processing efficiency of the waste liquid. Therefore, the purpose of environmental protection or resource reutilization is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of waste liquid treatment, and in particular to a waste liquid treatment method for a urea hydrolysis system. Background Art

[0002] How to deal with the waste liquid generated by the urea hydrolysis system is a major problem. Moreover, with the increasing standards for the discharge and recycling of waste liquid from power plants, the requirements for waste liquid treatment are also getting higher and higher. Therefore, there is an urgent need for a waste liquid treatment method for the urea hydrolysis system to improve the treatment accuracy and efficiency of the waste liquid and achieve the goals of environmental protection and resource recycling. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a waste liquid treatment method for a urea hydrolysis system, which generates a level to be treated through relevant information of the waste liquid, and selects a corresponding waste liquid treatment module. The waste liquid treatment module sets the current waste liquid treatment strategy, obtains the actual relevant information after treatment and generates a treatment evaluation value. The treatment strategy is corrected according to the treatment evaluation value, and the treatment strategy is discovered and adjusted in time to improve the waste liquid treatment efficiency, thereby achieving the purpose of environmental protection or resource recycling.

[0004] In some embodiments of the present application, a method for treating waste liquid in a urea hydrolysis system is provided, comprising: Pre-set the discharge cycle, discharge the waste liquid into the storage tank according to the discharge cycle, obtain the relevant information of the current waste liquid before treatment, and generate the treatment level of the waste liquid based on the relevant information; Selecting a waste liquid treatment module for the current waste liquid according to the level to be treated, transporting the current waste liquid to the corresponding waste liquid treatment module and generating a treatment strategy for the current waste liquid, the treatment strategy including treatment parameters of multiple waste liquid treatment submodules; Process according to the processing strategy and set the inspection time, obtain the actual relevant information within the inspection time and generate a processing evaluation value within the inspection time, and determine whether to generate a correction instruction for the corresponding processing parameters based on the processing evaluation value.

[0005] In some embodiments of the present application, generating a level of waste liquid to be processed based on relevant information includes: Obtaining relevant information about the current waste liquid, including waste liquid flow, main components, and component content; Generate a predicted processing time according to the current waste liquid flow rate, and establish multiple predicted time intervals based on the predicted processing time; Based on the recovery cost prediction model and the recovery effect prediction model, the main components of the current waste liquid and the corresponding component contents are predicted to generate a first predicted recovery cost and a first predicted recovery effect for each prediction time interval; generating a second predicted recovery cost based on the first predicted recovery cost in each predicted time interval, comparing the second predicted recovery cost with a corresponding preset recovery cost threshold, and generating a first evaluation value to be processed based on the comparison result; Arrange the first predicted recovery effects of each predicted time interval in chronological order of the predicted time intervals, compare the first predicted recovery effect at the end of the arrangement with a preset recovery effect threshold, and generate a second evaluation value to be processed based on the comparison result; Generate a compensation coefficient for the second evaluation value to be processed according to the change trend and fluctuation degree of the arranged plurality of first predicted recovery effects; generating a comprehensive evaluation value to be processed according to the first evaluation value to be processed, the second evaluation value to be processed, and the compensation coefficient; The calculation formula of the comprehensive evaluation value to be processed is: ; Wherein, P0 is the comprehensive evaluation value to be processed, P1 is the first evaluation value to be processed, a1 is the weight coefficient of the first evaluation value to be processed, P2 is the second evaluation value to be processed, a2 is the weight coefficient of the second evaluation value to be processed, and b is the compensation coefficient; The treatment level of the current waste liquid is set according to the comprehensive treatment evaluation value.

[0006] In some embodiments of the present application, selecting a waste liquid treatment module for the current waste liquid according to the level to be treated includes: Pre-set comprehensive pending evaluation value thresholds; When the comprehensive evaluation value to be processed is less than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the second level, and the waste liquid treatment module of the waste liquid is selected as the secondary waste liquid treatment module; When the comprehensive evaluation value to be processed is greater than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the first level, and the waste liquid treatment module of the current waste liquid is selected as the first level waste liquid treatment module.

[0007] In some embodiments of the present application, a treatment strategy for current wastewater is generated, including: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, a primary waste liquid treatment reference library is selected, wherein the primary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset primary treatment strategy; Perform similarity analysis on the comprehensive evaluation value of the current waste liquid to be treated and multiple preset comprehensive evaluation values ​​of the waste liquid to be treated in the first-level waste liquid treatment reference library, and use the preset first-level treatment strategy corresponding to the preset comprehensive evaluation value of the waste liquid to be treated with the greatest similarity as the first-level waste liquid treatment module to generate the treatment strategy for the current waste liquid; If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, a secondary waste liquid treatment reference library is selected, wherein the secondary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset secondary treatment strategy; A similarity analysis is performed on the comprehensive evaluation value of the current waste liquid to be processed and multiple preset comprehensive evaluation values ​​to be processed in the secondary waste liquid treatment reference library, and the preset secondary treatment strategy corresponding to the preset comprehensive evaluation value to be processed with the greatest similarity is used as the secondary waste liquid treatment module to generate the current waste liquid treatment strategy.

[0008] In some embodiments of the present application, obtaining actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for a corresponding processing parameter based on the processing evaluation value include: If the waste liquid treatment module of the current waste liquid is a first-level waste liquid treatment module, first standard related information of the current waste liquid and a preset recycling cost threshold are set according to the first preset standard corresponding to the first-level waste liquid treatment module; A plurality of first time intervals of interest are set according to the waste liquid treatment submodule included in the treatment strategy set by the primary waste liquid treatment module, and first standard-related information and a preset recovery cost threshold of the current waste liquid are divided into a plurality of first standard-related sub-information and a plurality of preset recovery cost sub-thresholds according to the plurality of first time intervals of interest, wherein the first standard-related sub-information, the preset recovery cost sub-thresholds, and the first time intervals of interest have a one-to-one correspondence; Presetting a first inspection duration, wherein the first inspection duration includes at least a first focus time interval; Taking the first inspection duration as a time reference line, setting multiple data collection nodes according to a first preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a first actual related information change curve graph of the current waste liquid during the first inspection duration, wherein the first actual related information change relationship graph includes change curves of the multiple actual related information; The first standard-related sub-information corresponding to the first time interval of interest included in the first inspection duration is collected according to the data collection node and mapped onto the time reference line, thereby obtaining a first standard-related information change curve graph of the current waste liquid during the first inspection duration, wherein the first standard-related information change curve graph includes a plurality of corresponding change curves of the first standard-related sub-information; Comparing the actual relevant information and the corresponding first standard-related sub-information change curves in the first actual relevant information change relationship graph and the first standard-related information change curve graph to obtain a first curve similarity evaluation value and a first information difference evaluation value; Obtaining the actual recovery cost within the first inspection period, generating an actual recovery cost difference based on the actual recovery cost and a preset recovery cost sub-threshold within the first inspection period, and generating a recovery cost evaluation value within the first inspection period based on the actual recovery cost difference; generating a first processing evaluation value according to the first curve similarity evaluation value, the first information difference evaluation value, and the recovery cost evaluation value; generating a first standard processing evaluation value based on the first standard-related sub-information in the first inspection duration and a preset recovery cost sub-threshold; If the first processing evaluation value is greater than the first standard processing evaluation value, no correction instruction for the processing parameter is generated; If the first processing evaluation value is less than the first standard processing evaluation value, a correction instruction for the corresponding processing parameter is generated.

[0009] In some embodiments of the present application, the calculation formula of the first processing evaluation value is: ; Where D1 is the first processing evaluation value, w1 is the weight coefficient of the first information difference evaluation value, d1 is the first processing evaluation conversion coefficient, and n1 is the total number of data collection nodes within the first inspection time. is the comprehensive information difference between all actual relevant information at the i-th data collection node and the corresponding first standard related sub-information, w2 is the first curve similarity evaluation value, d2 is the second processing evaluation conversion coefficient, is the slope of the change curve of the v1th actual relevant information at the i-th data collection node, is the slope of the change curve of the first standard-related sub-information corresponding to the v1th actual relevant information at the i-th data collection node, m1 is the total number of actual relevant information in the primary waste liquid treatment module, w3 is the weight coefficient of the recovery cost evaluation value, d3 is the third treatment evaluation conversion coefficient, The actual recovery cost difference.

[0010] In some embodiments of the present application, obtaining actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for a corresponding processing parameter based on the processing evaluation value, further includes: If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, setting the second standard related information of the current waste liquid according to the second preset standard corresponding to the secondary waste liquid treatment module; A plurality of second time intervals of interest are set for the waste liquid treatment submodule included in the treatment strategy set by the secondary waste liquid treatment module, and the second standard-related information of the current waste liquid is divided into a plurality of second standard-related sub-information according to the plurality of second time intervals of interest, and the second standard-related sub-information corresponds one-to-one to the second time intervals of interest; Presetting a second inspection duration, wherein the second inspection duration includes at least a second focus time interval; Taking the second inspection duration as a time reference line, setting multiple data collection nodes according to a second preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a second actual related information change curve graph of the current waste liquid during the second inspection duration, wherein the second actual related information change relationship graph includes change curves of the multiple actual related information; The second standard-related sub-information corresponding to the second time interval of interest included in the second inspection duration is collected according to the data collection node, and mapped onto the time reference line, thereby obtaining a second standard-related information change curve graph of the current waste liquid during the second inspection duration, wherein the second standard-related information change curve graph includes a plurality of corresponding change curves of the second standard-related sub-information; Comparing the change curves of the actual relevant information and the corresponding second standard-related sub-information in the second actual relevant information change relationship graph and the second standard-related information change curve graph to obtain a second curve similarity evaluation value and a second information difference evaluation value; generating a second processing evaluation value according to the second curve similarity evaluation value and the second information difference evaluation value; generating a second standard processing evaluation value based on the second standard related sub-information in the second inspection duration; If the second processing evaluation value is greater than the second standard processing evaluation value, no correction instruction for the processing parameter is generated; If the second processing evaluation value is less than the second standard processing evaluation value, a correction instruction for the processing parameter is generated.

[0011] In some embodiments of the present application, the calculation formula of the second processing evaluation value is: ; Where D2 is the second processing evaluation value, n2 is the total number of data collection nodes within the second inspection time, is the comprehensive information difference between all actual relevant information at the sth data collection node and the corresponding second standard related sub-information, is the slope of the change curve of the v2th actual relevant information at the sth data collection node, is the slope of the change curve of the second standard-related sub-information corresponding to the v2th actual-related information at the sth data collection node.

[0012] In some embodiments of the present application, generating a correction instruction corresponding to a processing parameter includes: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, calculating a first evaluation value difference between the first treatment evaluation value and the first standard treatment evaluation value, setting a correction instruction for the treatment parameter of the corresponding waste liquid treatment submodule according to the first evaluation value difference, and predicting an increase in the recovery cost corresponding to the correction instruction; Generate a comprehensive recovery cost for the first inspection period based on the predicted recovery cost increase and the actual recovery cost of the first inspection period. If the comprehensive recovery cost is greater than a preset recovery cost sub-threshold for the first inspection period, stop processing and transfer the current waste liquid to the secondary waste liquid treatment module. If the current waste liquid treatment module is a secondary waste liquid treatment module, the second evaluation value difference between the second treatment evaluation value and the second standard treatment evaluation value is calculated, and the correction instruction of the treatment parameter of the corresponding waste liquid treatment submodule is set according to the second evaluation value difference.

[0013] In some embodiments of the present application, the method further comprises: A plurality of inspection time periods are set according to the difference in the evaluation values, and whether to generate a correction instruction is determined according to the actual relevant information after processing in each inspection time period, until the current waste liquid meets the corresponding preset standard.

[0014] Compared with the prior art, the waste liquid treatment method for a urea hydrolysis system in the embodiment of the present application has the following advantages: The level of waste to be treated is generated through the relevant information of the waste liquid, and the corresponding waste liquid treatment module is selected. The waste liquid treatment module sets the current waste liquid treatment strategy, obtains the actual relevant information after treatment and generates a treatment evaluation value. The treatment strategy is modified according to the treatment evaluation value, and the treatment strategy is discovered and adjusted in time to improve the waste liquid treatment efficiency, thereby achieving the purpose of environmental protection or resource reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a flow chart of a waste liquid treatment method for a urea hydrolysis system in an embodiment of the present application. DETAILED DESCRIPTION

[0016] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0020] like Figure 1 As shown, a waste liquid treatment method for a urea hydrolysis system according to an embodiment of the present application includes: Step S101: pre-set a discharge cycle, discharge the waste liquid into a storage tank according to the discharge cycle, obtain relevant information of the current waste liquid before treatment, and generate a treatment level of the waste liquid based on the relevant information; Step S102: selecting a waste liquid treatment module for the current waste liquid according to the level to be treated, transporting the current waste liquid to the corresponding waste liquid treatment module and generating a treatment strategy for the current waste liquid, the treatment strategy including treatment parameters of multiple waste liquid treatment submodules; Step S103: Process according to the processing strategy and set the inspection time, obtain the actual relevant information within the inspection time and generate a processing evaluation value within the inspection time, and determine whether to generate a correction instruction for the corresponding processing parameter based on the processing evaluation value.

[0021] In this embodiment, the waste liquid treatment module refers to the pretreatment of waste liquid before recycling or discharge. The waste liquid treatment submodule includes but is not limited to precipitation, filtration, chemical treatment, etc., to remove harmful substances such as ammonia and urea to ensure that environmental protection and emission standards are met.

[0022] In this embodiment, the transport instructions include transporting to the waste liquid recovery module and the wastewater pool. The storage tank, waste liquid treatment module, waste liquid recovery module, wastewater pool and desalted water flushing system are connected, thereby realizing the recovery and discharge of waste liquid treatment and achieving the goals of environmental protection and energy conservation and emission reduction.

[0023] In some embodiments of the present application, generating a level of waste liquid to be processed based on relevant information includes: Obtaining relevant information about the current waste liquid, including waste liquid flow, main components, and component content; Generate a predicted processing time according to the current waste liquid flow rate, and establish multiple predicted time intervals based on the predicted processing time; Based on the recovery cost prediction model and the recovery effect prediction model, the main components of the current waste liquid and the corresponding component contents are predicted to generate a first predicted recovery cost and a first predicted recovery effect for each prediction time interval; generating a second predicted recovery cost based on the first predicted recovery cost in each predicted time interval, comparing the second predicted recovery cost with a corresponding preset recovery cost threshold, and generating a first evaluation value to be processed based on the comparison result; Arrange the first predicted recovery effects of each predicted time interval in chronological order of the predicted time intervals, compare the first predicted recovery effect at the end of the arrangement with a preset recovery effect threshold, and generate a second evaluation value to be processed based on the comparison result; Generate a compensation coefficient for the second evaluation value to be processed according to the change trend and fluctuation degree of the arranged plurality of first predicted recovery effects; generating a comprehensive evaluation value to be processed according to the first evaluation value to be processed, the second evaluation value to be processed, and the compensation coefficient; The calculation formula of the comprehensive evaluation value to be processed is: ; Wherein, P0 is the comprehensive evaluation value to be processed, P1 is the first evaluation value to be processed, a1 is the weight coefficient of the first evaluation value to be processed, P2 is the second evaluation value to be processed, a2 is the weight coefficient of the second evaluation value to be processed, and b is the compensation coefficient; The treatment level of the current waste liquid is set according to the comprehensive treatment evaluation value.

[0024] In this embodiment, b=b0*b1*b2, when the change trend is an upward trend, that is, the multiple first predicted recovery effects are getting better and better, b1=1, when the change trend is a downward trend, that is, the multiple first predicted recovery effects are getting worse and worse, b1=-1, when the fluctuation degree is greater, b2 is smaller, when the fluctuation degree is smaller, b2 is larger, b0 is the compensation conversion coefficient, when b2 is smaller, the compensation coefficient is smaller, when b2 is larger, the compensation coefficient is larger, and the value range of the compensation coefficient is (-1, 1).

[0025] In this embodiment, the preset recovery cost threshold refers to the maximum usage cost when recycling waste liquid. When the second predicted recovery cost is smaller than the preset recovery cost threshold, the first evaluation value to be processed is larger. The preset recovery effect threshold refers to the minimum recovery effect that meets the recovery standard. When the last first predicted recovery effect is greater than the preset recovery effect threshold, the second evaluation value to be processed is larger.

[0026] In this embodiment, the recycling cost and recycling effect of the relevant information of the current waste liquid are predicted to generate a comprehensive evaluation value for processing. Whether the current waste liquid can be recycled is judged based on the comprehensive evaluation value for processing. The level of processing of the current waste liquid is determined based on the judgment result, laying the foundation for the subsequent selection of the waste liquid treatment module and the formulation of the treatment strategy, thereby improving the efficiency of waste liquid treatment.

[0027] In some embodiments of the present application, selecting a waste liquid treatment module for the current waste liquid according to the level to be treated includes: Pre-set comprehensive pending evaluation value thresholds; When the comprehensive evaluation value to be processed is less than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the second level, and the waste liquid treatment module of the waste liquid is selected as the secondary waste liquid treatment module; When the comprehensive evaluation value to be processed is greater than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the first level, and the waste liquid treatment module of the current waste liquid is selected as the first level waste liquid treatment module.

[0028] In this embodiment, the secondary waste liquid treatment module is a waste liquid purification module, which treats the waste liquid to the discharge standard, and the primary waste liquid treatment module is a waste liquid recovery module, which treats the waste liquid to the recycling standard, thereby improving resource utilization efficiency and waste liquid treatment efficiency on the basis of environmental protection.

[0029] In some embodiments of the present application, a treatment strategy for current wastewater is generated, including: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, a primary waste liquid treatment reference library is selected, wherein the primary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset primary treatment strategy; Perform similarity analysis on the comprehensive evaluation value of the current waste liquid to be treated and multiple preset comprehensive evaluation values ​​of the waste liquid to be treated in the first-level waste liquid treatment reference library, and use the preset first-level treatment strategy corresponding to the preset comprehensive evaluation value of the waste liquid to be treated with the greatest similarity as the first-level waste liquid treatment module to generate the treatment strategy for the current waste liquid; If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, a secondary waste liquid treatment reference library is selected, wherein the secondary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset secondary treatment strategy; A similarity analysis is performed on the comprehensive evaluation value of the current waste liquid to be processed and multiple preset comprehensive evaluation values ​​to be processed in the secondary waste liquid treatment reference library, and the preset secondary treatment strategy corresponding to the preset comprehensive evaluation value to be processed with the greatest similarity is used as the secondary waste liquid treatment module to generate the current waste liquid treatment strategy.

[0030] In this embodiment, the first-level waste liquid treatment reference library is constructed based on the historical comprehensive evaluation value of the waste liquid to be treated of the first-level waste liquid treatment module and the corresponding multiple historical treatment strategies, and the historical treatment strategies meet the recovery cost requirements and the waste liquid meets the recovery standards. The second-level waste liquid treatment reference library is constructed based on the historical comprehensive evaluation value of the waste liquid to be treated of the second-level waste liquid treatment module and the corresponding multiple historical treatment strategies, and the waste liquid after the historical treatment strategies meets the emission standards.

[0031] In this embodiment, the similarity is maximum, that is, the difference between the preset comprehensive evaluation value to be processed and the comprehensive evaluation value to be processed is minimum, and the treatment strategy for the current waste liquid is screened out based on the similarity, thereby improving the setting efficiency and accuracy of the waste liquid treatment strategy.

[0032] In some embodiments of the present application, obtaining actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for a corresponding processing parameter based on the processing evaluation value include: If the waste liquid treatment module of the current waste liquid is a first-level waste liquid treatment module, first standard related information of the current waste liquid and a preset recycling cost threshold are set according to the first preset standard corresponding to the first-level waste liquid treatment module; A plurality of first time intervals of interest are set according to the waste liquid treatment submodule included in the treatment strategy set by the primary waste liquid treatment module, and first standard-related information and a preset recovery cost threshold of the current waste liquid are divided into a plurality of first standard-related sub-information and a plurality of preset recovery cost sub-thresholds according to the plurality of first time intervals of interest, wherein the first standard-related sub-information, the preset recovery cost sub-thresholds, and the first time intervals of interest have a one-to-one correspondence; Presetting a first inspection duration, wherein the first inspection duration includes at least a first focus time interval; Taking the first inspection duration as a time reference line, setting multiple data collection nodes according to a first preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a first actual related information change curve graph of the current waste liquid during the first inspection duration, wherein the first actual related information change relationship graph includes change curves of the multiple actual related information; The first standard-related sub-information corresponding to the first time interval of interest included in the first inspection duration is collected according to the data collection node and mapped onto the time reference line, thereby obtaining a first standard-related information change curve graph of the current waste liquid during the first inspection duration, wherein the first standard-related information change curve graph includes a plurality of corresponding change curves of the first standard-related sub-information; Comparing the actual relevant information and the corresponding first standard-related sub-information change curves in the first actual relevant information change relationship graph and the first standard-related information change curve graph to obtain a first curve similarity evaluation value and a first information difference evaluation value; Obtaining the actual recovery cost within the first inspection period, generating an actual recovery cost difference based on the actual recovery cost and a preset recovery cost sub-threshold within the first inspection period, and generating a recovery cost evaluation value within the first inspection period based on the actual recovery cost difference; generating a first processing evaluation value according to the first curve similarity evaluation value, the first information difference evaluation value, and the recovery cost evaluation value; generating a first standard processing evaluation value based on the first standard-related sub-information in the first inspection duration and a preset recovery cost sub-threshold; If the first processing evaluation value is greater than the first standard processing evaluation value, no correction instruction for the processing parameter is generated; If the first processing evaluation value is less than the first standard processing evaluation value, a correction instruction for the corresponding processing parameter is generated.

[0033] In this embodiment, the first standard related information refers to multiple related information that the current waste liquid meets the recycling standard after treatment. The first focus time interval is set according to the number of waste liquid treatment sub-modules included in the treatment strategy set by the first-level waste liquid treatment module. If the waste liquid treatment sub-module requires a longer processing time, the corresponding waste liquid treatment sub-module sets two or more first focus time intervals.

[0034] In this embodiment, by dividing multiple first time intervals of interest, and corresponding first standard-related sub-information and preset recovery cost sub-threshold values ​​for each first time interval of interest, the actual relevant information and the actual recovery cost are compared with the first standard-related sub-information and the preset recovery cost sub-threshold value, thereby laying the foundation for the subsequent generation of the first processing evaluation value of the first inspection time, improving the processing efficiency of the processing strategy and the evaluation accuracy of the recovery effect, timely discovering and adjusting the processing parameters corresponding to the processing strategy, achieving the waste liquid recovery standard, and improving energy utilization efficiency.

[0035] In some embodiments of the present application, the calculation formula of the first processing evaluation value is: ; Where D1 is the first processing evaluation value, w1 is the weight coefficient of the first information difference evaluation value, d1 is the first processing evaluation conversion coefficient, and n1 is the total number of data collection nodes within the first inspection time. is the comprehensive information difference between all actual relevant information at the i-th data collection node and the corresponding first standard related sub-information, w2 is the first curve similarity evaluation value, d2 is the second processing evaluation conversion coefficient, is the slope of the change curve of the v1th actual relevant information at the i-th data collection node, is the slope of the change curve of the first standard-related sub-information corresponding to the v1th actual relevant information at the i-th data collection node, m1 is the total number of actual relevant information in the primary waste liquid treatment module, w3 is the weight coefficient of the recovery cost evaluation value, d3 is the third treatment evaluation conversion coefficient, The actual recovery cost difference.

[0036] In this embodiment, the first processing evaluation conversion coefficient, the second processing evaluation conversion coefficient and the third processing evaluation conversion coefficient respectively refer to coefficients for converting the first information difference evaluation value, the first curve similarity evaluation value and the recovery cost evaluation value into the same dimension as the first processing evaluation value. When the first information difference evaluation value, the first curve similarity evaluation value and the recovery cost evaluation value are larger, the corresponding first processing evaluation value is larger.

[0037] In some embodiments of the present application, obtaining actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for a corresponding processing parameter based on the processing evaluation value, further includes: If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, setting the second standard related information of the current waste liquid according to the second preset standard corresponding to the secondary waste liquid treatment module; A plurality of second time intervals of interest are set for the waste liquid treatment submodule included in the treatment strategy set by the secondary waste liquid treatment module, and the second standard-related information of the current waste liquid is divided into a plurality of second standard-related sub-information according to the plurality of second time intervals of interest, and the second standard-related sub-information corresponds one-to-one to the second time intervals of interest; Presetting a second inspection duration, wherein the second inspection duration includes at least a second focus time interval; Taking the second inspection duration as a time reference line, setting multiple data collection nodes according to a second preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a second actual related information change curve graph of the current waste liquid during the second inspection duration, wherein the second actual related information change relationship graph includes change curves of the multiple actual related information; The second standard-related sub-information corresponding to the second time interval of interest included in the second inspection duration is collected according to the data collection node, and mapped onto the time reference line, thereby obtaining a second standard-related information change curve graph of the current waste liquid during the second inspection duration, wherein the second standard-related information change curve graph includes a plurality of corresponding change curves of the second standard-related sub-information; Comparing the change curves of the actual relevant information and the corresponding second standard-related sub-information in the second actual relevant information change relationship graph and the second standard-related information change curve graph to obtain a second curve similarity evaluation value and a second information difference evaluation value; generating a second processing evaluation value according to the second curve similarity evaluation value and the second information difference evaluation value; generating a second standard processing evaluation value based on the second standard related sub-information in the second inspection duration; If the second processing evaluation value is greater than the second standard processing evaluation value, no correction instruction for the processing parameter is generated; If the second processing evaluation value is less than the second standard processing evaluation value, a correction instruction for the processing parameter is generated.

[0038] In this embodiment, the second standard related information refers to multiple related information that the current waste liquid meets the emission standards after treatment. The second focus time interval is set according to the number of waste liquid treatment sub-modules included in the treatment strategy set by the secondary waste liquid treatment module. If the waste liquid treatment sub-module requires a longer processing time, the corresponding waste liquid treatment sub-module sets two or more second focus time intervals.

[0039] In this embodiment, by dividing the time intervals into multiple second time intervals of interest, and corresponding second standard-related sub-information to each second time interval of interest, the actual relevant information is compared with the first standard-related sub-information, thereby laying the foundation for the subsequent generation of the second processing evaluation value of the second inspection time, improving the processing efficiency of the processing strategy and the evaluation accuracy of the emission effect, timely discovering and adjusting the processing parameters corresponding to the processing strategy, realizing the emission standards of the waste liquid, and achieving the purpose of environmental protection.

[0040] In some embodiments of the present application, the calculation formula of the second processing evaluation value is: ; Where D2 is the second processing evaluation value, n2 is the total number of data collection nodes within the second inspection time, is the comprehensive information difference between all actual relevant information at the sth data collection node and the corresponding second standard related sub-information, is the slope of the change curve of the v2th actual relevant information at the sth data collection node, is the slope of the change curve of the second standard-related sub-information corresponding to the v2th actual-related information at the sth data collection node.

[0041] In some embodiments of the present application, generating a correction instruction corresponding to a processing parameter includes: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, calculating a first evaluation value difference between the first treatment evaluation value and the first standard treatment evaluation value, setting a correction instruction for the treatment parameter of the corresponding waste liquid treatment submodule according to the first evaluation value difference, and predicting an increase in the recovery cost corresponding to the correction instruction; Generate a comprehensive recovery cost for the first inspection period based on the predicted recovery cost increase and the actual recovery cost of the first inspection period. If the comprehensive recovery cost is greater than a preset recovery cost sub-threshold for the first inspection period, stop processing and transfer the current waste liquid to the secondary waste liquid treatment module. If the current waste liquid treatment module is a secondary waste liquid treatment module, the second evaluation value difference between the second treatment evaluation value and the second standard treatment evaluation value is calculated, and the correction instruction of the treatment parameter of the corresponding waste liquid treatment submodule is set according to the second evaluation value difference.

[0042] In some embodiments of the present application, the method further comprises: A plurality of inspection time periods are set according to the difference in the evaluation values, and whether to generate a correction instruction is determined according to the actual relevant information after processing in each inspection time period, until the current waste liquid meets the corresponding preset standard.

[0043] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. A method for treating waste liquid in a urea hydrolysis system, characterized in that: include: Pre-set the discharge cycle, discharge the waste liquid into the storage tank according to the discharge cycle, obtain the relevant information of the current waste liquid before treatment, and generate the treatment level of the waste liquid based on the relevant information; Selecting a waste liquid treatment module for the current waste liquid according to the level to be treated, transporting the current waste liquid to the corresponding waste liquid treatment module and generating a treatment strategy for the current waste liquid, the treatment strategy including treatment parameters of multiple waste liquid treatment submodules; Process according to the processing strategy and set the inspection time, obtain the actual relevant information within the inspection time and generate a processing evaluation value within the inspection time, and determine whether to generate a correction instruction for the corresponding processing parameters based on the processing evaluation value.

2. The waste liquid treatment method for a urea hydrolysis system according to claim 1, wherein: Generate the corresponding wastewater treatment level based on relevant information, including: Obtaining relevant information about the current waste liquid, including waste liquid flow, main components, and component content; Generate a predicted processing time according to the current waste liquid flow rate, and establish multiple predicted time intervals based on the predicted processing time; Based on the recovery cost prediction model and the recovery effect prediction model, the main components of the current waste liquid and the corresponding component contents are predicted to generate a first predicted recovery cost and a first predicted recovery effect for each prediction time interval; generating a second predicted recovery cost based on the first predicted recovery cost in each predicted time interval, comparing the second predicted recovery cost with a corresponding preset recovery cost threshold, and generating a first evaluation value to be processed based on the comparison result; Arrange the first predicted recovery effects of each predicted time interval in chronological order of the predicted time intervals, compare the first predicted recovery effect at the end of the arrangement with a preset recovery effect threshold, and generate a second evaluation value to be processed based on the comparison result; Generate a compensation coefficient for the second evaluation value to be processed according to the change trend and fluctuation degree of the arranged plurality of first predicted recovery effects; generating a comprehensive evaluation value to be processed according to the first evaluation value to be processed, the second evaluation value to be processed, and the compensation coefficient; The calculation formula of the comprehensive evaluation value to be processed is: ； Wherein, P0 is the comprehensive evaluation value to be processed, P1 is the first evaluation value to be processed, a1 is the weight coefficient of the first evaluation value to be processed, P2 is the second evaluation value to be processed, a2 is the weight coefficient of the second evaluation value to be processed, and b is the compensation coefficient; The treatment level of the current waste liquid is set according to the comprehensive treatment evaluation value.

3. The waste liquid treatment method for a urea hydrolysis system according to claim 2, wherein: Select the wastewater treatment module for the current wastewater according to the level to be treated, including: Pre-set comprehensive pending evaluation value thresholds; When the comprehensive evaluation value to be processed is less than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the second level, and the waste liquid treatment module of the waste liquid is selected as the secondary waste liquid treatment module; When the comprehensive evaluation value to be processed is greater than the comprehensive evaluation value threshold, the level of the waste liquid to be processed is set to the first level, and the waste liquid treatment module of the current waste liquid is selected as the first level waste liquid treatment module.

4. The waste liquid treatment method for a urea hydrolysis system according to claim 3, wherein: Generate current wastewater treatment strategies, including: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, a primary waste liquid treatment reference library is selected, wherein the primary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset primary treatment strategy; Perform similarity analysis on the comprehensive evaluation value of the current waste liquid to be treated and multiple preset comprehensive evaluation values ​​of the waste liquid to be treated in the first-level waste liquid treatment reference library, and use the preset first-level treatment strategy corresponding to the preset comprehensive evaluation value of the waste liquid to be treated with the greatest similarity as the first-level waste liquid treatment module to generate the treatment strategy for the current waste liquid; If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, a secondary waste liquid treatment reference library is selected, wherein the secondary waste liquid treatment reference library includes a plurality of preset comprehensive evaluation values ​​to be treated, and each preset comprehensive evaluation value to be treated is associated with a preset secondary treatment strategy; A similarity analysis is performed on the comprehensive evaluation value of the current waste liquid to be processed and multiple preset comprehensive evaluation values ​​to be processed in the secondary waste liquid treatment reference library, and the preset secondary treatment strategy corresponding to the preset comprehensive evaluation value to be processed with the greatest similarity is used as the secondary waste liquid treatment module to generate the current waste liquid treatment strategy.

5. The waste liquid treatment method for a urea hydrolysis system according to claim 4, wherein: Acquiring actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for the corresponding processing parameters based on the processing evaluation value, including: If the waste liquid treatment module of the current waste liquid is a first-level waste liquid treatment module, first standard related information of the current waste liquid and a preset recycling cost threshold are set according to the first preset standard corresponding to the first-level waste liquid treatment module; A plurality of first time intervals of interest are set according to the waste liquid treatment submodule included in the treatment strategy set by the primary waste liquid treatment module, and first standard-related information and a preset recovery cost threshold of the current waste liquid are divided into a plurality of first standard-related sub-information and a plurality of preset recovery cost sub-thresholds according to the plurality of first time intervals of interest, wherein the first standard-related sub-information, the preset recovery cost sub-thresholds, and the first time intervals of interest have a one-to-one correspondence; Presetting a first inspection duration, wherein the first inspection duration includes at least a first focus time interval; Taking the first inspection duration as a time reference line, setting multiple data collection nodes according to a first preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a first actual related information change curve graph of the current waste liquid during the first inspection duration, wherein the first actual related information change relationship graph includes change curves of the multiple actual related information; The first standard-related sub-information corresponding to the first time interval of interest included in the first inspection duration is collected according to the data collection node and mapped onto the time reference line, thereby obtaining a first standard-related information change curve graph of the current waste liquid during the first inspection duration, wherein the first standard-related information change curve graph includes a plurality of corresponding change curves of the first standard-related sub-information; Comparing the actual relevant information and the corresponding first standard-related sub-information change curves in the first actual relevant information change relationship graph and the first standard-related information change curve graph to obtain a first curve similarity evaluation value and a first information difference evaluation value; Obtaining the actual recovery cost within the first inspection period, generating an actual recovery cost difference based on the actual recovery cost and a preset recovery cost sub-threshold within the first inspection period, and generating a recovery cost evaluation value within the first inspection period based on the actual recovery cost difference; generating a first processing evaluation value according to the first curve similarity evaluation value, the first information difference evaluation value, and the recovery cost evaluation value; generating a first standard processing evaluation value based on the first standard-related sub-information in the first inspection duration and a preset recovery cost sub-threshold; If the first processing evaluation value is greater than the first standard processing evaluation value, no correction instruction for the processing parameter is generated; If the first processing evaluation value is less than the first standard processing evaluation value, a correction instruction for the corresponding processing parameter is generated.

6. The method for treating waste liquid in a urea hydrolysis system according to claim 5, wherein: The calculation formula of the first processing evaluation value is: ； Where D1 is the first processing evaluation value, w1 is the weight coefficient of the first information difference evaluation value, d1 is the first processing evaluation conversion coefficient, and n1 is the total number of data collection nodes within the first inspection time. is the comprehensive information difference between all actual relevant information at the i-th data collection node and the corresponding first standard related sub-information, w2 is the first curve similarity evaluation value, d2 is the second processing evaluation conversion coefficient, is the slope of the change curve of the v1th actual relevant information at the i-th data collection node, is the slope of the change curve of the first standard-related sub-information corresponding to the v1th actual relevant information at the i-th data collection node, m1 is the total number of actual relevant information in the primary waste liquid treatment module, w3 is the weight coefficient of the recovery cost evaluation value, d3 is the third treatment evaluation conversion coefficient, The actual recovery cost difference.

7. The method for treating waste liquid in a urea hydrolysis system according to claim 6, wherein: Acquiring actual relevant information within the inspection time and generating a processing evaluation value within the inspection time, and determining whether to generate a correction instruction for the corresponding processing parameters based on the processing evaluation value, further comprising: If the waste liquid treatment module of the current waste liquid is a secondary waste liquid treatment module, setting the second standard related information of the current waste liquid according to the second preset standard corresponding to the secondary waste liquid treatment module; A plurality of second time intervals of interest are set for the waste liquid treatment submodule included in the treatment strategy set by the secondary waste liquid treatment module, and the second standard-related information of the current waste liquid is divided into a plurality of second standard-related sub-information according to the plurality of second time intervals of interest, and the second standard-related sub-information corresponds one-to-one to the second time intervals of interest; Presetting a second inspection duration, wherein the second inspection duration includes at least a second focus time interval; Taking the second inspection duration as a time reference line, setting multiple data collection nodes according to a second preset time interval, collecting and processing multiple actual related information according to the data collection nodes, and mapping them onto the time reference line, thereby obtaining a second actual related information change curve graph of the current waste liquid during the second inspection duration, wherein the second actual related information change relationship graph includes change curves of the multiple actual related information; The second standard-related sub-information corresponding to the second time interval of interest included in the second inspection duration is collected according to the data collection node, and mapped onto the time reference line, thereby obtaining a second standard-related information change curve graph of the current waste liquid during the second inspection duration, wherein the second standard-related information change curve graph includes a plurality of corresponding change curves of the second standard-related sub-information; Comparing the change curves of the actual relevant information and the corresponding second standard-related sub-information in the second actual relevant information change relationship graph and the second standard-related information change curve graph to obtain a second curve similarity evaluation value and a second information difference evaluation value; generating a second processing evaluation value according to the second curve similarity evaluation value and the second information difference evaluation value; generating a second standard processing evaluation value based on the second standard related sub-information in the second inspection duration; If the second processing evaluation value is greater than the second standard processing evaluation value, no correction instruction for the processing parameter is generated; If the second processing evaluation value is less than the second standard processing evaluation value, a correction instruction for the processing parameter is generated.

8. The method for treating waste liquid in a urea hydrolysis system according to claim 7, wherein: The calculation formula of the second processing evaluation value is: ； Where D2 is the second processing evaluation value, n2 is the total number of data collection nodes within the second inspection time, is the comprehensive information difference between all actual relevant information at the sth data collection node and the corresponding second standard related sub-information, is the slope of the change curve of the v2th actual relevant information at the sth data collection node, is the slope of the change curve of the second standard-related sub-information corresponding to the v2th actual-related information at the sth data collection node.

9. The method for treating waste liquid in a urea hydrolysis system according to claim 8, wherein: Generate correction instructions corresponding to processing parameters, including: If the waste liquid treatment module of the current waste liquid is a primary waste liquid treatment module, calculating a first evaluation value difference between the first treatment evaluation value and the first standard treatment evaluation value, setting a correction instruction for the treatment parameter of the corresponding waste liquid treatment submodule according to the first evaluation value difference, and predicting an increase in the recovery cost corresponding to the correction instruction; Generate a comprehensive recovery cost for the first inspection period based on the predicted recovery cost increase and the actual recovery cost of the first inspection period. If the comprehensive recovery cost is greater than a preset recovery cost sub-threshold for the first inspection period, stop processing and transfer the current waste liquid to the secondary waste liquid treatment module. If the current waste liquid treatment module is a secondary waste liquid treatment module, the second evaluation value difference between the second treatment evaluation value and the second standard treatment evaluation value is calculated, and the correction instruction of the treatment parameter of the corresponding waste liquid treatment submodule is set according to the second evaluation value difference.

10. The waste liquid treatment method for a urea hydrolysis system according to claim 9, further comprising: A plurality of inspection time periods are set according to the difference in the evaluation values, and whether to generate a correction instruction is determined according to the actual relevant information after processing in each inspection time period, until the current waste liquid meets the corresponding preset standard.

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