A coupling control system for deep denitrification of sewage

Abstract

The present invention provides a coupling control system for deep denitrification of sewage, which relates to the technical field of sewage denitrification. The system comprises: real-time monitoring of sewage according to preset sewage quality monitoring indicators to obtain current parameter data of sewage; obtaining historical parameter data of sewage and analyzing sewage quality in combination with current parameter data, extracting sewage quality parameter characteristics, and determining main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period; setting a coupling control strategy, selecting and enabling the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitoring the sewage denitrification effect in real time, and optimizing the control parameters of the coupling control strategy according to the sewage denitrification effect; and effectively ensuring the deep denitrification effect of sewage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage denitrification, and in particular to a coupling control system for deep sewage denitrification. Background Art

[0002] Deep denitrification of sewage refers to reducing the remaining nitrogen content in sewage to meet emission standards. The existing deep denitrification process of sewage mainly achieves deep denitrification of sewage by optimizing the biological denitrification process, but the optimization process is unknown and the optimization control is difficult, which affects the effect of deep denitrification of sewage; coupling control refers to correlating and influencing multiple control loops to jointly control one or more control objects, which is conducive to accurately and efficiently improving the overall performance of the controlled object.

[0003] Therefore, the present invention provides a coupling control system for deep denitrification of sewage. Summary of the invention

[0004] The present invention provides a coupling control system for deep denitrification of sewage, which monitors sewage in real time according to preset sewage quality monitoring indicators to obtain current parameter data of the sewage; obtains historical parameter data of the sewage and performs sewage quality analysis in combination with current parameter data, extracts sewage quality parameter characteristics, and determines main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period; sets a coupling control strategy, selects and enables the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitors the denitrification effect of sewage in real time, and optimizes the control parameters of the coupling control strategy according to the denitrification effect of sewage; and effectively ensures the deep denitrification effect of sewage.

[0005] The present invention provides a coupling control system for deep denitrification of sewage, comprising:

[0006] The sewage monitoring module is used to monitor the sewage in real time according to the preset sewage quality monitoring indicators and obtain the current parameter data of the sewage;

[0007] The sewage analysis module is used to obtain the historical parameter data of sewage and analyze the sewage water quality in combination with the current parameter data, extract the characteristics of sewage water quality parameters, and determine the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period;

[0008] The coupling control module is used to set the coupling control strategy, select and enable the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitor the sewage denitrification effect in real time, and optimize the control parameters of the coupling control strategy according to the sewage denitrification effect.

[0009] According to the present invention, a sewage deep denitrification coupling control system and a sewage monitoring module include:

[0010] A monitoring sensor unit is used to select a monitoring sensor for sewage quality according to preset sewage quality monitoring indicators to monitor sewage in real time, wherein the preset sewage quality monitoring indicators include: dissolved oxygen monitoring indicator, chemical oxygen demand monitoring indicator, biochemical oxygen demand monitoring indicator, nitrate monitoring indicator, nitrite monitoring indicator, ammonia nitrogen monitoring indicator, pH monitoring indicator, total phosphorus monitoring indicator, total nitrogen monitoring indicator, sludge concentration monitoring indicator and carbon source concentration monitoring indicator;

[0011] The parameter data unit is used to obtain the real-time monitoring data of the monitoring sensor, perform data preprocessing and data aggregation on the real-time monitoring data according to the monitoring period, and determine the current parameter data of the sewage.

[0012] According to the present invention, a sewage deep denitrification coupling control system and a sewage analysis module include:

[0013] A sewage data collection unit, used for acquiring historical parameter data of the sewage based on current parameter data of the sewage;

[0014] A sewage water quality analysis unit, used for analyzing sewage water quality based on historical parameter data of sewage and current parameter data of sewage;

[0015] Determine the qualified parameter range of sewage water quality based on the historical parameter data of sewage. If the current parameter data of sewage are all within the qualified parameter range, the sewage water quality is determined to be qualified.

[0016] Extracting sewage water quality parameter characteristics according to the preset sewage water quality analysis strategy and the historical parameter data of sewage, and determining the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period, wherein the preset sewage water quality analysis strategy includes: statistical analysis strategy, correlation analysis strategy, time series analysis strategy, cluster analysis strategy and principal component analysis strategy;

[0017] If the current parameter data of the sewage is not within the qualified parameter range, the sewage quality is judged to be abnormal, the current parameter data of the sewage that is not within the qualified parameter range is located, recorded as the abnormal parameter data of the sewage in the current period, and abnormal control is performed.

[0018] According to a coupling control system for deep denitrification of sewage provided by the present invention, the sewage water quality analysis unit also includes:

[0019] The sewage analysis block is used to obtain the sewage type according to the sewage source, wherein the sewage type includes: industrial sewage type and domestic sewage type;

[0020] Obtain the main pollutants in the sewage according to the sewage type and determine the impact characteristics of the main pollutants on the current parameter data of the sewage, and extract the sewage water quality parameter characteristics in combination with the preset sewage water quality analysis strategy corresponding to the sewage type and the historical parameter data, wherein the impact characteristics include: no impact characteristics, enhanced impact characteristics and weakened impact characteristics;

[0021] The sewage denitrification impact block is used to determine the influencing parameter data of sewage denitrification and the weight of the influencing parameter data on the sewage denitrification effect according to the sewage water quality parameter characteristics, the historical parameter data of the sewage and the historical denitrification data;

[0022] An influencing parameter data block is used to determine the current influencing parameter data and current influencing weight of sewage denitrification in the current period according to the influencing parameter data of sewage denitrification and the current parameter data of sewage;

[0023] Set an impact weight threshold, and remove the current impact parameter data whose current impact weight is not higher than the impact weight threshold;

[0024] The current influencing parameter data with the largest current influencing weight is selected from the current influencing parameter data after data elimination, marked as the main influencing parameter data for sewage denitrification in the current period, and the remaining current influencing parameter data is marked as the auxiliary influencing parameter data for sewage denitrification in the current period.

[0025] A coupled control system for deep denitrification of sewage provided by the present invention also includes:

[0026] The influencing parameter data adjustment block is used to determine the denitrification scenario according to the sewage quality, denitrification process and denitrification period, and to adjust the scenario of the main influencing parameter data and the auxiliary influencing parameter data;

[0027] The user demand adjustment block is used to monitor the user's denitrification control demand and make user adjustments to the main influencing parameter data and the auxiliary influencing parameter data according to the user's denitrification control demand.

[0028] According to the present invention, a coupling control system for deep denitrification of sewage is provided, and the coupling control module includes:

[0029] A coupling control strategy unit, used to set a coupling control strategy according to historical denitrification data of sewage and enable a coupling control strategy corresponding to the main influencing parameter data and a coupling control strategy corresponding to the auxiliary influencing parameter data, wherein the coupling control strategy includes: a coupling control strategy based on influencing parameter data, a coupling control strategy based on fuzzy control, a coupling control strategy based on predictive control, and a coupling control strategy based on optimization control;

[0030] Select and enable the coupling control strategy based on fuzzy control and the coupling control strategy based on predictive control according to the characteristics of sewage water quality parameters;

[0031] Obtain the sewage quality and denitrification effect of the current period, and enable the coupling control strategy based on optimization control;

[0032] According to the current parameter data of the sewage, the control parameters of the coupling control strategy are set to perform deep denitrification on the sewage, wherein the control parameters of the coupling control strategy include: inlet flow control parameters, internal reflow ratio control parameters, external reflow ratio control parameters and inlet distribution ratio control parameters;

[0033] The denitrification process division unit is used to obtain the denitrification process of the current period, divide the denitrification process into processes, and obtain the denitrification process sub-processes, wherein the denitrification process sub-processes include: pre-anaerobic zone sub-process, anaerobic zone sub-process, anoxic zone sub-process, aerobic zone sub-process, post-anoxic zone sub-process and post-aerobic sub-process;

[0034] The sewage denitrification analysis unit is used to monitor the sewage denitrification effect in real time and conduct denitrification analysis on the sewage denitrification effect process by process according to the denitrification process sub-process, wherein the sewage denitrification effect includes: sewage denitrification quality effect and sewage denitrification efficiency effect;

[0035] The denitrification effect calculation unit is used to obtain the inlet flow data, internal reflow ratio data, external reflow ratio data, inlet distribution ratio data, inlet nitrogen concentration data and outlet nitrogen concentration data of each denitrification process sub-process according to the real-time monitoring results and the control parameters of the coupling control strategy, and perform unified quantitative processing on the data to obtain the denitrification quality effect of the sewage in the current period;

[0036] According to the denitrification analysis results of each process, the denitrification time data of each denitrification process sub-process is obtained to obtain the denitrification efficiency effect of the sewage in the current period;

[0037] According to the historical denitrification data of sewage, the quality influence weight of sewage denitrification quality effect on sewage denitrification effect and the efficiency influence weight of sewage denitrification efficiency effect on sewage denitrification effect are set to determine the sewage denitrification effect score value for the current period;

[0038] ; Wherein, F represents the sewage denitrification effect score value in the current period; represents the quality impact weight; Represents the efficiency impact weight; si1 represents the quantitative value of the inlet water allocation ratio data of the i1th denitrification process sub-process; p1i1 represents the quantitative value of the inlet nitrogen concentration data of the i1th denitrification process sub-process; p2i1 represents the quantitative value of the effluent nitrogen concentration data of the i1th denitrification process sub-process; q represents the quantitative value of the inlet flow data of the current period; b1i1 represents the quantitative value of the internal reflux ratio data of the i1th denitrification process sub-process; b2i1 represents the quantitative value of the external reflux ratio data of the i1th denitrification process sub-process; P1 represents the quantitative value of the preset denitrification concentration data; T1 represents the preset denitrification time data; ti1 represents the denitrification time data of the i1th denitrification process sub-process; n1 represents the number of denitrification process sub-processes in the current period;

[0039] A control optimization unit, used to optimize the control parameters of the coupling control strategy according to the sewage denitrification effect;

[0040] If the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold, it is determined that there is no need to optimize the control parameters of the coupling control strategy;

[0041] If the sewage denitrification effect score value in the current period is lower than the preset denitrification score threshold, the control parameters of the coupling control strategy are optimized until the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold.

[0042] According to a coupling control system for deep denitrification of sewage provided by the present invention, the control optimization unit comprises:

[0043] The sewage denitrification early warning block is used to obtain the final effluent nitrogen concentration data of the current period if the sewage denitrification effect score value of the current period is not lower than the preset denitrification score threshold;

[0044] If the final effluent nitrogen concentration data of the current period is lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification quality of the current period is abnormal, and sewage denitrification quality abnormality warning data is generated;

[0045] If the final effluent nitrogen concentration data of the current period is not lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification efficiency of the current period is abnormal, and sewage denitrification efficiency abnormal warning data is generated;

[0046] The abnormal control block is used to perform abnormal control based on the abnormal warning data of sewage denitrification quality and the abnormal warning data of sewage denitrification efficiency.

[0047] A coupled control system for deep denitrification of sewage provided by the present invention also includes:

[0048] The sewage denitrification visual module is used to visualize the sewage denitrification process and the current parameter data of the sewage in the current period;

[0049] The coupling control visualization module is used to visualize the coupling control strategy enabled in the current period.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] By monitoring the sewage in real time according to the preset sewage quality monitoring indicators, the current parameter data of the sewage is obtained; the historical parameter data of the sewage is obtained and combined with the current parameter data to analyze the sewage quality, extract the sewage quality parameter characteristics, and determine the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period; set the coupling control strategy, select and enable the coupling control strategy according to the main influencing parameter data and auxiliary influencing parameter data, monitor the sewage denitrification effect in real time, and optimize the control parameters of the coupling control strategy according to the sewage denitrification effect; effectively ensure the deep denitrification effect of sewage.

[0052] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0053] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0055] Figure 1 It is a structural schematic diagram of a coupling control system for deep denitrification of sewage provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0057] Embodiment 1:

[0058] The embodiment of the present invention provides a coupling control system for deep denitrification of sewage, such as Figure 1 As shown, including:

[0059] The sewage monitoring module is used to monitor the sewage in real time according to the preset sewage quality monitoring indicators and obtain the current parameter data of the sewage;

[0060] The sewage analysis module is used to obtain the historical parameter data of sewage and analyze the sewage water quality in combination with the current parameter data, extract the characteristics of sewage water quality parameters, and determine the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period;

[0061] The coupling control module is used to set the coupling control strategy, select and enable the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitor the sewage denitrification effect in real time, and optimize the control parameters of the coupling control strategy according to the sewage denitrification effect.

[0062] In this embodiment, the preset sewage water quality monitoring index refers to a preset index for monitoring sewage water quality.

[0063] In this embodiment, the current parameter data refers to data used to represent the sewage quality determined by performing data preprocessing and data aggregation processing on the real-time monitoring data according to the monitoring period.

[0064] In this embodiment, the historical parameter data refers to the parameter data of sewage acquired in a historical period.

[0065] In this embodiment, the sewage quality analysis refers to an analysis of the sewage quality based on the historical parameter data and current parameter data of the sewage.

[0066] In this embodiment, the sewage water quality parameter characteristics refer to the characteristics of the current parameter data of the sewage determined based on the historical parameter data and the preset sewage water quality analysis strategy.

[0067] In this embodiment, the main influencing parameter data refers to the parameter data that mainly affects the denitrification of sewage in the current period.

[0068] In this embodiment, the auxiliary influencing parameter data refers to parameter data that has an impact on wastewater denitrification in the current period and the impact cannot be ignored.

[0069] In this embodiment, the coupling control strategy refers to a strategy for controlling specific parameter data of the wastewater denitrification process.

[0070] In this embodiment, the sewage denitrification effect includes the sewage denitrification quality effect and the sewage denitrification efficiency effect, which are used to represent the sewage denitrification result, and are usually represented according to the nitrogen concentration data in the sewage after the sewage denitrification is completed and the time taken for the sewage denitrification.

[0071] In this embodiment, the control parameter refers to the parameter data required for the coupling control strategy to achieve wastewater denitrification.

[0072] In this embodiment, deep denitrification of sewage refers to reducing the remaining nitrogen content in the sewage, for example, reducing the remaining nitrogen content in the sewage to below a1.

[0073] The working principle and beneficial effects of the above technical solution are: by real-time monitoring of sewage according to preset sewage quality monitoring indicators, the current parameter data of sewage is obtained; the historical parameter data of sewage is obtained and combined with the current parameter data to analyze the sewage quality, extract the sewage quality parameter characteristics, and determine the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period; set the coupling control strategy, select and enable the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitor the sewage denitrification effect in real time, and optimize the control parameters of the coupling control strategy according to the sewage denitrification effect; effectively ensure the deep denitrification effect of sewage.

[0074] Embodiment 2:

[0075] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, a sewage monitoring module, including:

[0076] A monitoring sensor unit is used to select a monitoring sensor for sewage quality according to preset sewage quality monitoring indicators to monitor sewage in real time, wherein the preset sewage quality monitoring indicators include: dissolved oxygen monitoring indicator, chemical oxygen demand monitoring indicator, biochemical oxygen demand monitoring indicator, nitrate monitoring indicator, nitrite monitoring indicator, ammonia nitrogen monitoring indicator, pH monitoring indicator, total phosphorus monitoring indicator, total nitrogen monitoring indicator, sludge concentration monitoring indicator and carbon source concentration monitoring indicator;

[0077] The parameter data unit is used to obtain the real-time monitoring data of the monitoring sensor, perform data preprocessing and data aggregation on the real-time monitoring data according to the monitoring period, and determine the current parameter data of the sewage.

[0078] In this embodiment, the preset sewage water quality monitoring indicators refer to preset indicators for monitoring sewage water quality, such as dissolved oxygen monitoring indicators, chemical oxygen demand monitoring indicators, biochemical oxygen demand monitoring indicators, nitrate monitoring indicators, nitrite monitoring indicators, ammonia nitrogen monitoring indicators, pH monitoring indicators, total phosphorus monitoring indicators, total nitrogen monitoring indicators, sludge concentration monitoring indicators and carbon source concentration monitoring indicators.

[0079] In this embodiment, the monitoring sensor refers to a sensor used to monitor sewage, such as an electrochemical dissolved oxygen sensor for monitoring dissolved oxygen.

[0080] In this embodiment, the real-time monitoring data refers to the data obtained by the monitoring sensor through real-time monitoring of sewage according to preset sewage quality monitoring indicators.

[0081] In this embodiment, the monitoring period refers to a period obtained by segmenting the real-time monitoring time, such as an a1 monitoring period, a current monitoring period, or a historical monitoring period.

[0082] In this embodiment, the current parameter data refers to data determined by preprocessing and aggregating the real-time monitoring data according to the monitoring period, and is used to represent the water quality of the sewage, such as dissolved oxygen parameter data, nitrite parameter data, and ammonia nitrogen parameter data.

[0083] The working principle and beneficial effects of the above technical solution are: by monitoring the sewage in real time according to the preset sewage quality monitoring indicators, the current parameter data of the sewage is obtained, laying a data foundation for the subsequent deep denitrification of sewage.

[0084] Embodiment 3:

[0085] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, and a sewage analysis module, including:

[0086] A sewage data collection unit, used for acquiring historical parameter data of the sewage based on current parameter data of the sewage;

[0087] A sewage water quality analysis unit, used for analyzing sewage water quality based on historical parameter data of sewage and current parameter data of sewage;

[0088] Determine the qualified parameter range of sewage water quality based on the historical parameter data of sewage. If the current parameter data of sewage are all within the qualified parameter range, the sewage water quality is determined to be qualified.

[0089] Extracting sewage water quality parameter characteristics according to the preset sewage water quality analysis strategy and the historical parameter data of sewage, and determining the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period, wherein the preset sewage water quality analysis strategy includes: statistical analysis strategy, correlation analysis strategy, time series analysis strategy, cluster analysis strategy and principal component analysis strategy;

[0090] If the current parameter data of the sewage is not within the qualified parameter range, the sewage quality is judged to be abnormal, the current parameter data of the sewage that is not within the qualified parameter range is located, recorded as the abnormal parameter data of the sewage in the current period, and abnormal control is performed.

[0091] In this embodiment, the historical parameter data refers to the parameter data of sewage obtained during a historical period.

[0092] In this embodiment, the sewage quality analysis refers to an analysis performed based on historical parameter data of the sewage and current parameter data of the sewage, and is used to determine whether the sewage quality is abnormal.

[0093] In this embodiment, the qualified parameter range refers to a range determined based on historical parameter data of the sewage, that is, when the current parameter data of the sewage is within the qualified parameter range, the sewage quality is determined to be qualified.

[0094] In this embodiment, if the current parameter data of the sewage is not within the qualified parameter range, for example, the dissolved oxygen parameter data in the current parameter data is not within the corresponding qualified parameter range, it is determined that the sewage water quality is abnormal.

[0095] In this embodiment, abnormal parameter data refers to current parameter data that is not within the qualified parameter range, for example, dissolved oxygen parameter data that is not within the corresponding qualified parameter range.

[0096] The working principle and beneficial effects of the above technical solution are: by obtaining the historical parameter data of sewage and combining it with the current parameter data to analyze the sewage water quality, extracting the sewage water quality parameter characteristics, and determining the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period, it is beneficial to the subsequent coupling control of the deep denitrification of sewage, thereby optimizing the deep denitrification effect of sewage.

[0097] Embodiment 4:

[0098] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, a sewage water quality analysis unit, and further includes:

[0099] A sewage analysis block is used to obtain sewage types according to sewage sources, wherein sewage types include industrial sewage types and domestic sewage types;

[0100] Obtain the main pollutants in the sewage according to the sewage type and determine the impact characteristics of the main pollutants on the current parameter data of the sewage, and extract the sewage water quality parameter characteristics in combination with the preset sewage water quality analysis strategy corresponding to the sewage type and the historical parameter data, wherein the impact characteristics include: no impact characteristics, enhanced impact characteristics and weakened impact characteristics;

[0101] The sewage denitrification impact block is used to determine the influencing parameter data of sewage denitrification and the weight of the influencing parameter data on the sewage denitrification effect according to the sewage water quality parameter characteristics, the historical parameter data of the sewage and the historical denitrification data;

[0102] An influencing parameter data block is used to determine the current influencing parameter data and current influencing weight of sewage denitrification in the current period according to the influencing parameter data of sewage denitrification and the current parameter data of sewage;

[0103] Set an impact weight threshold, and remove the current impact parameter data whose current impact weight is not higher than the impact weight threshold;

[0104] The current influencing parameter data with the largest current influencing weight is selected from the current influencing parameter data after data elimination, marked as the main influencing parameter data for sewage denitrification in the current period, and the remaining current influencing parameter data is marked as the auxiliary influencing parameter data for sewage denitrification in the current period.

[0105] In this embodiment, the sewage source, for example, an industrial sewage source, a domestic sewage source.

[0106] In this embodiment, the sewage type is used to distinguish sewage, and different types of sewage include different parameter data. For example, the chemical oxygen demand concentration in industrial sewage type sewage is high, and the total phosphorus concentration in production sewage type sewage is low.

[0107] In this embodiment, the main pollutants refer to pollutants that affect the quality of sewage, such as nitrogen substances, ammonia substances and phosphorus substances.

[0108] In this embodiment, the impact characteristics refer to the impact of the main pollutants on the current parameter data of the sewage, such as no impact characteristics, enhanced impact characteristics, and weakened impact characteristics.

[0109] In this embodiment, the preset sewage water quality analysis strategy refers to a preset strategy for analyzing sewage water quality.

[0110] In this embodiment, the sewage water quality parameter characteristics refer to the characteristics used to represent the current parameter data of the sewage determined based on the historical parameter data and the preset sewage water quality analysis strategy, which are used for subsequent simplified analysis of the current parameter data of the sewage.

[0111] In this embodiment, the influencing parameter data refers to the data in the parameter data of sewage that affects the denitrification of sewage. For example, the dissolved oxygen parameter data affects the denitrification of sewage, and the dissolved oxygen parameter data is the influencing parameter data.

[0112] In this embodiment, the current influencing parameter data refers to the data in the current parameter data of the sewage in the current period that affects the denitrification of sewage. For example, if the dissolved oxygen parameter data in the current period affects the denitrification of sewage, then the dissolved oxygen parameter data is the current influencing parameter data.

[0113] In this embodiment, the current impact weight refers to the impact weight of the current impact parameter data in the current period on wastewater denitrification.

[0114] In this embodiment, the influence weight threshold refers to the weight threshold used for subsequent selection of primary influence parameter data and selection of secondary influence parameter data.

[0115] In this embodiment, the main influencing parameter data refers to the current influencing parameter data that mainly affects the denitrification of sewage in the current period.

[0116] In this embodiment, the auxiliary influencing parameter data refers to the current influencing parameter data that has an impact on wastewater denitrification in the current period and the impact cannot be ignored.

[0117] The working principle and beneficial effect of the above technical solution are: by determining the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period, it is beneficial to the subsequent deep denitrification of sewage.

[0118] Embodiment 5:

[0119] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, further comprising:

[0120] The influencing parameter data adjustment block is used to determine the denitrification scenario according to the sewage quality, denitrification process and denitrification period, and to adjust the scenario of the main influencing parameter data and the auxiliary influencing parameter data;

[0121] The user demand adjustment block is used to monitor the user's denitrification control demand and make user adjustments to the main influencing parameter data and the auxiliary influencing parameter data according to the user's denitrification control demand.

[0122] In this embodiment, the denitrification scenario refers to a scenario for representing sewage denitrification determined according to sewage quality, denitrification process and denitrification period, such as a sewage denitrification scenario in summer and a sewage denitrification scenario of a mixture of multiple sewages.

[0123] In this embodiment, the scene adjustment refers to the adjustment of the main influencing parameter data and the auxiliary influencing parameter data according to the denitrification scene.

[0124] In this embodiment, the user's denitrification control demand refers to the user's control demand for a certain parameter data in the sewage denitrification process, for example, the user's control demand for dissolved oxygen parameter data in addition to the denitrification demand in the sewage denitrification process.

[0125] In this embodiment, user adjustment refers to adjustment of the main influencing parameter data and the auxiliary influencing parameter data according to the user's denitrification control requirements.

[0126] The working principle and beneficial effect of the above technical solution are: by performing scene adjustment and user adjustment on the main influencing parameter data and the auxiliary influencing parameter data, it is conducive to more accurate deep denitrification of sewage in the subsequent stage.

[0127] Embodiment 6:

[0128] The embodiment of the present invention provides a coupling control system for deep denitrification of sewage, and the coupling control module includes:

[0129] A coupling control strategy unit, used to set a coupling control strategy according to historical denitrification data of sewage and enable a coupling control strategy corresponding to the main influencing parameter data and a coupling control strategy corresponding to the auxiliary influencing parameter data, wherein the coupling control strategy includes: a coupling control strategy based on influencing parameter data, a coupling control strategy based on fuzzy control, a coupling control strategy based on predictive control, and a coupling control strategy based on optimization control;

[0130] Select and enable the coupling control strategy based on fuzzy control and the coupling control strategy based on predictive control according to the characteristics of sewage water quality parameters;

[0131] Obtain the sewage quality and denitrification effect of the current period, and enable the coupling control strategy based on optimization control;

[0132] According to the current parameter data of the sewage, the control parameters of the coupling control strategy are set to perform deep denitrification on the sewage, wherein the control parameters of the coupling control strategy include: inlet flow control parameters, internal reflow ratio control parameters, external reflow ratio control parameters and inlet distribution ratio control parameters;

[0133] The denitrification process division unit is used to obtain the denitrification process of the current period, divide the denitrification process into processes, and obtain the denitrification process sub-processes, wherein the denitrification process sub-processes include: pre-anaerobic zone sub-process, anaerobic zone sub-process, anoxic zone sub-process, aerobic zone sub-process, post-anoxic zone sub-process and post-aerobic sub-process;

[0134] The sewage denitrification analysis unit is used to monitor the sewage denitrification effect in real time and conduct denitrification analysis on the sewage denitrification effect process by process according to the denitrification process sub-process, wherein the sewage denitrification effect includes: sewage denitrification quality effect and sewage denitrification efficiency effect;

[0135] The denitrification effect calculation unit is used to obtain the inlet flow data, internal reflow ratio data, external reflow ratio data, inlet distribution ratio data, inlet nitrogen concentration data and outlet nitrogen concentration data of each denitrification process sub-process according to the real-time monitoring results and the control parameters of the coupling control strategy, and perform unified quantitative processing on the data to obtain the denitrification quality effect of the sewage in the current period;

[0136] According to the denitrification analysis results of each process, the denitrification time data of each denitrification process sub-process is obtained to obtain the denitrification efficiency effect of the sewage in the current period;

[0137] According to the historical denitrification data of sewage, the quality influence weight of sewage denitrification quality effect on sewage denitrification effect and the efficiency influence weight of sewage denitrification efficiency effect on sewage denitrification effect are set to determine the sewage denitrification effect score value for the current period;

[0138] ; Wherein, F represents the sewage denitrification effect score value in the current period; represents the quality impact weight; Represents the efficiency impact weight; si1 represents the quantitative value of the inlet water allocation ratio data of the i1th denitrification process sub-process; p1i1 represents the quantitative value of the inlet nitrogen concentration data of the i1th denitrification process sub-process; p2i1 represents the quantitative value of the effluent nitrogen concentration data of the i1th denitrification process sub-process; q represents the quantitative value of the inlet flow data of the current period; b1i1 represents the quantitative value of the internal reflux ratio data of the i1th denitrification process sub-process; b2i1 represents the quantitative value of the external reflux ratio data of the i1th denitrification process sub-process; P1 represents the quantitative value of the preset denitrification concentration data; T1 represents the preset denitrification time data; ti1 represents the denitrification time data of the i1th denitrification process sub-process; n1 represents the number of denitrification process sub-processes in the current period;

[0139] A control optimization unit, used to optimize the control parameters of the coupling control strategy according to the sewage denitrification effect;

[0140] If the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold, it is determined that there is no need to optimize the control parameters of the coupling control strategy;

[0141] If the sewage denitrification effect score value in the current period is lower than the preset denitrification score threshold, the control parameters of the coupling control strategy are optimized until the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold.

[0142] In this embodiment, the historical denitrification data refers to data obtained by denitrifying sewage during a historical period.

[0143] In this embodiment, the coupling control strategy refers to a strategy for controlling specific parameter data of the sewage denitrification process, such as a coupling control strategy based on influencing parameter data, a coupling control strategy based on fuzzy control, a coupling control strategy based on predictive control, and a coupling control strategy based on optimization control.

[0144] In this embodiment, the coupling control strategy based on the influencing parameter data, for example, is a coupling control strategy based on the dissolved oxygen influencing parameter data.

[0145] In this embodiment, a coupling control strategy based on fuzzy control and a coupling control strategy based on predictive control are selected and enabled according to the characteristics of sewage water quality parameters. For example, if the characteristics of sewage water quality parameters change regularly, the coupling control strategy based on predictive control is enabled; if the characteristics of sewage water quality parameters change chaotically, the coupling control strategy based on fuzzy control is enabled.

[0146] In this embodiment, the sewage quality and the sewage denitrification effect of the current period are obtained, and a coupling control strategy based on optimization control is enabled, that is, a coupling control strategy based on the sewage denitrification effect of the current period.

[0147] In this embodiment, the control parameter refers to the parameter data required for controlling the coupling control strategy to achieve sewage denitrification, which is set according to the current parameter data of the sewage.

[0148] In this embodiment, the denitrification process refers to a process for denitrifying wastewater.

[0149] In this embodiment, the denitrification process sub-process refers to the sub-process determined by the process division of the denitrification process, which is used for subsequent more accurate analysis of the denitrification process, such as the pre-anaerobic zone sub-process, the anaerobic zone sub-process, the anoxic zone sub-process, the aerobic zone sub-process, the post-anoxic zone sub-process and the post-aerobic sub-process.

[0150] In this embodiment, the process-by-process denitrification analysis refers to the denitrification analysis performed sequentially according to the denitrification process sub-processes, for example, the denitrification analysis is performed on the pre-anaerobic zone sub-process first, and then the denitrification analysis is performed on the anaerobic zone sub-process.

[0151] In this embodiment, the influent flow data refers to the flow data of sewage entering the denitrification process sub-process, that is, the sewage flow data of sewage denitrification treatment performed in each denitrification process sub-process.

[0152] In this embodiment, the internal reflux ratio data refers to the ratio data of the nitrification liquid flow data to the inlet water flow data.

[0153] In this embodiment, the external reflow ratio data refers to the ratio data of the reflow sludge flow data to the inflow water flow data.

[0154] In this embodiment, the water inlet distribution ratio data refers to the ratio data of the wastewater flow data processed by each denitrification process sub-process.

[0155] In this embodiment, the influent nitrogen concentration data refers to the nitrogen concentration data in the wastewater entering the denitrification process sub-process.

[0156] In this embodiment, the effluent nitrogen concentration data refers to the nitrogen concentration data in the sewage after the denitrification process sub-process completes the denitrification of the sewage.

[0157] In this embodiment, unified quantitative processing of the data is performed to facilitate subsequent unified analysis of the data and further determine the denitrification effect of the sewage.

[0158] In this embodiment, the denitrification time data refers to the time data used by the denitrification process sub-process to complete the denitrification of sewage.

[0159] In this embodiment, the sewage denitrification quality effect refers to the effect on the sewage denitrification quality in the current period; the sewage denitrification efficiency effect refers to the effect on the sewage denitrification efficiency in the current period.

[0160] In this embodiment, the quality impact weight refers to the impact weight of the sewage denitrification quality effect on the sewage denitrification effect; the efficiency impact weight refers to the impact weight of the sewage denitrification efficiency effect on the sewage denitrification effect.

[0161] In this embodiment, the wastewater denitrification effect score value refers to a numerical value used to quantify the wastewater denitrification effect.

[0162] In this embodiment, the preset denitrification score threshold refers to a score value used to determine whether the wastewater denitrification effect is qualified and whether the coupling control strategy needs to be optimized.

[0163] The working principle and beneficial effects of the above technical solution are: by setting the coupling control strategy, selecting and enabling the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, real-time monitoring of the sewage denitrification effect, and optimizing the control parameters of the coupling control strategy according to the sewage denitrification effect, the deep denitrification effect of the sewage is effectively ensured.

[0164] Embodiment 7:

[0165] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, and a control optimization unit, comprising:

[0166] The sewage denitrification early warning block is used to obtain the final effluent nitrogen concentration data of the current period if the sewage denitrification effect score value of the current period is not lower than the preset denitrification score threshold;

[0167] If the final effluent nitrogen concentration data of the current period is lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification quality of the current period is abnormal, and sewage denitrification quality abnormality warning data is generated;

[0168] If the final effluent nitrogen concentration data of the current period is not lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification efficiency of the current period is abnormal, and sewage denitrification efficiency abnormal warning data is generated;

[0169] The abnormal control block is used to perform abnormal control based on the abnormal warning data of sewage denitrification quality and the abnormal warning data of sewage denitrification efficiency.

[0170] In this embodiment, the final effluent nitrogen concentration data refers to the nitrogen concentration data after denitrification of sewage in the current period.

[0171] In this embodiment, the preset effluent nitrogen concentration data refers to the nitrogen concentration data required to complete the preset sewage denitrification process. For example, the nitrogen concentration data after the sewage denitrification is completed is not higher than the p1 concentration.

[0172] In this embodiment, the abnormal wastewater denitrification quality warning data refers to the warning data generated when it is determined that the wastewater denitrification quality in the current period is abnormal.

[0173] In this embodiment, the abnormal warning data of sewage denitrification efficiency refers to the warning data generated when it is determined that the sewage denitrification efficiency in the current period is abnormal.

[0174] The working principle and beneficial effect of the above technical solution are: by judging whether the sewage denitrification effect in the current period is abnormal and performing abnormal control, it is helpful to further ensure the deep denitrification of sewage.

[0175] Embodiment 8:

[0176] The embodiment of the present invention provides a coupled control system for deep denitrification of sewage, further comprising:

[0177] The sewage denitrification visual module is used to visualize the sewage denitrification process and the current parameter data of the sewage in the current period;

[0178] The coupling control visualization module is used to visualize the coupling control strategy enabled in the current period.

[0179] In this embodiment, the current parameter data of the sewage in the current period is visualized and displayed according to the sequence of the sewage denitrification process.

[0180] In this embodiment, the visualization result can be set with corresponding access permissions, and the visualization of corresponding content is performed according to the access permissions.

[0181] The working principle and beneficial effect of the above technical solution are: by visually displaying the sewage denitrification process and coupling the control strategy, it is beneficial to the user experience.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coupling control system for deep denitrification of sewage, characterized in that: include: The sewage monitoring module is used to monitor the sewage in real time according to the preset sewage quality monitoring indicators and obtain the current parameter data of the sewage; The sewage analysis module is used to obtain the historical parameter data of sewage and analyze the sewage water quality in combination with the current parameter data, extract the characteristics of sewage water quality parameters, and determine the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period; The coupling control module is used to set the coupling control strategy, select and enable the coupling control strategy according to the main influencing parameter data and the auxiliary influencing parameter data, monitor the sewage denitrification effect in real time, and optimize the control parameters of the coupling control strategy according to the sewage denitrification effect; Wherein, the coupling control module includes: A coupling control strategy unit, used to set a coupling control strategy according to historical denitrification data of sewage and enable a coupling control strategy corresponding to the main influencing parameter data and a coupling control strategy corresponding to the auxiliary influencing parameter data, wherein the coupling control strategy includes: a coupling control strategy based on influencing parameter data, a coupling control strategy based on fuzzy control, a coupling control strategy based on predictive control, and a coupling control strategy based on optimization control; Select and enable the coupling control strategy based on fuzzy control and the coupling control strategy based on predictive control according to the characteristics of sewage water quality parameters; Obtain the sewage quality and denitrification effect of the current period, and enable the coupling control strategy based on optimization control; According to the current parameter data of the sewage, the control parameters of the coupling control strategy are set to perform deep denitrification on the sewage, wherein the control parameters of the coupling control strategy include: inlet flow control parameters, internal reflow ratio control parameters, external reflow ratio control parameters and inlet distribution ratio control parameters; The denitrification process division unit is used to obtain the denitrification process of the current period, divide the denitrification process into processes, and obtain the denitrification process sub-processes, wherein the denitrification process sub-processes include: pre-anaerobic zone sub-process, anaerobic zone sub-process, anoxic zone sub-process, aerobic zone sub-process, post-anoxic zone sub-process and post-aerobic sub-process; The sewage denitrification analysis unit is used to monitor the sewage denitrification effect in real time and conduct denitrification analysis on the sewage denitrification effect process by process according to the denitrification process sub-process, wherein the sewage denitrification effect includes: sewage denitrification quality effect and sewage denitrification efficiency effect; The denitrification effect calculation unit is used to obtain the inlet flow data, internal reflow ratio data, external reflow ratio data, inlet distribution ratio data, inlet nitrogen concentration data and outlet nitrogen concentration data of each denitrification process sub-process according to the real-time monitoring results and the control parameters of the coupling control strategy, and perform unified quantitative processing on the data to obtain the denitrification quality effect of the sewage in the current period; According to the denitrification analysis results of each process, the denitrification time data of each denitrification process sub-process is obtained to obtain the denitrification efficiency effect of the sewage in the current period; According to the historical denitrification data of sewage, the quality influence weight of sewage denitrification quality effect on sewage denitrification effect and the efficiency influence weight of sewage denitrification efficiency effect on sewage denitrification effect are set to determine the sewage denitrification effect score value for the current period; A control optimization unit, used to optimize the control parameters of the coupling control strategy according to the sewage denitrification effect; If the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold, it is determined that there is no need to optimize the control parameters of the coupling control strategy; If the sewage denitrification effect score value in the current period is lower than the preset denitrification score threshold, the control parameters of the coupling control strategy are optimized until the sewage denitrification effect score value in the current period is not lower than the preset denitrification score threshold.

2. A coupled control system for deep denitrification of sewage according to claim 1, characterized in that: Sewage monitoring module, including: A monitoring sensor unit is used to select a monitoring sensor for sewage quality according to preset sewage quality monitoring indicators to monitor sewage in real time, wherein the preset sewage quality monitoring indicators include: dissolved oxygen monitoring indicator, chemical oxygen demand monitoring indicator, biochemical oxygen demand monitoring indicator, nitrate monitoring indicator, nitrite monitoring indicator, ammonia nitrogen monitoring indicator, pH monitoring indicator, total phosphorus monitoring indicator, total nitrogen monitoring indicator, sludge concentration monitoring indicator and carbon source concentration monitoring indicator; The parameter data unit is used to obtain the real-time monitoring data of the monitoring sensor, perform data preprocessing and data aggregation on the real-time monitoring data according to the monitoring period, and determine the current parameter data of the sewage.

3. A coupled control system for deep denitrification of sewage according to claim 1, characterized in that: Wastewater analysis module, including: A sewage data collection unit, used for acquiring historical parameter data of the sewage based on current parameter data of the sewage; A sewage water quality analysis unit, used for analyzing sewage water quality based on historical parameter data of sewage and current parameter data of sewage; Determine the qualified parameter range of sewage water quality based on the historical parameter data of sewage. If the current parameter data of sewage are all within the qualified parameter range, the sewage water quality is determined to be qualified. Extracting sewage water quality parameter characteristics according to the preset sewage water quality analysis strategy and the historical parameter data of sewage, and determining the main influencing parameter data and auxiliary influencing parameter data of sewage denitrification in the current period, wherein the preset sewage water quality analysis strategy includes: statistical analysis strategy, correlation analysis strategy, time series analysis strategy, cluster analysis strategy and principal component analysis strategy; If the current parameter data of the sewage is not within the qualified parameter range, the sewage quality is judged to be abnormal, the current parameter data of the sewage that is not within the qualified parameter range is located, recorded as the abnormal parameter data of the sewage in the current period, and abnormal control is performed.

4. A coupled control system for deep denitrification of sewage according to claim 3, characterized in that: The sewage water quality analysis unit also includes: A sewage analysis block is used to obtain sewage types according to sewage sources, wherein sewage types include industrial sewage types and domestic sewage types; Obtain the main pollutants in the sewage according to the sewage type and determine the impact characteristics of the main pollutants on the current parameter data of the sewage, and extract the sewage water quality parameter characteristics in combination with the preset sewage water quality analysis strategy corresponding to the sewage type and the historical parameter data, wherein the impact characteristics include: no impact characteristics, enhanced impact characteristics and weakened impact characteristics; The sewage denitrification impact block is used to determine the influencing parameter data of sewage denitrification and the weight of the influencing parameter data on the sewage denitrification effect according to the sewage water quality parameter characteristics, the historical parameter data of the sewage and the historical denitrification data; An influencing parameter data block is used to determine the current influencing parameter data and current influencing weight of sewage denitrification in the current period according to the influencing parameter data of sewage denitrification and the current parameter data of sewage; Set an impact weight threshold, and remove the current impact parameter data whose current impact weight is not higher than the impact weight threshold; The current influencing parameter data with the largest current influencing weight is selected from the current influencing parameter data after data elimination, marked as the main influencing parameter data for sewage denitrification in the current period, and the remaining current influencing parameter data is marked as the auxiliary influencing parameter data for sewage denitrification in the current period.

5. A coupled control system for deep denitrification of sewage according to claim 4, characterized in that: Also includes: The influencing parameter data adjustment block is used to determine the denitrification scenario according to the sewage quality, denitrification process and denitrification period, and to adjust the scenario of the main influencing parameter data and the auxiliary influencing parameter data; The user demand adjustment block is used to monitor the user's denitrification control demand and make user adjustments to the main influencing parameter data and the auxiliary influencing parameter data according to the user's denitrification control demand.

6. A coupled control system for deep denitrification of sewage according to claim 1, characterized in that: Denitrification effect calculation unit, used for: ; Wherein, F represents the sewage denitrification effect score value in the current period; represents the quality impact weight; Represents the efficiency impact weight; si1 represents the quantitative value of the inlet allocation ratio data of the i1th denitrification process sub-process; p1i1 represents the quantitative value of the inlet nitrogen concentration data of the i1th denitrification process sub-process; p2i1 represents the quantitative value of the effluent nitrogen concentration data of the i1th denitrification process sub-process; q represents the quantitative value of the inlet flow data of the current period; b1i1 represents the quantitative value of the internal reflux ratio data of the i1th denitrification process sub-process; b2i1 represents the quantitative value of the external reflux ratio data of the i1th denitrification process sub-process; P1 represents the quantitative value of the preset denitrification concentration data; T1 represents the preset denitrification time data; ti1 represents the denitrification time data of the i1th denitrification process sub-process; n1 represents the number of denitrification process sub-processes in the current period.

7. A coupled control system for deep denitrification of sewage according to claim 6, characterized in that: Control optimization unit, including: The sewage denitrification early warning block is used to obtain the final effluent nitrogen concentration data of the current period if the sewage denitrification effect score value of the current period is not lower than the preset denitrification score threshold; If the final effluent nitrogen concentration data of the current period is lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification quality of the current period is abnormal, and sewage denitrification quality abnormality warning data is generated; If the final effluent nitrogen concentration data of the current period is not lower than the preset effluent nitrogen concentration data, it is determined that the sewage denitrification efficiency of the current period is abnormal, and sewage denitrification efficiency abnormal warning data is generated; The abnormal control block is used to perform abnormal control based on the abnormal warning data of sewage denitrification quality and the abnormal warning data of sewage denitrification efficiency.

8. A coupled control system for deep denitrification of sewage according to claim 1, characterized in that: Also includes: The sewage denitrification visual module is used to visualize the sewage denitrification process and the current parameter data of the sewage in the current period; The coupling control visualization module is used to visualize the coupling control strategy enabled in the current period.

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