Intelligent wastewater treatment system

Abstract

The invention belongs to the technical field of wastewater treatment, and relates to an intelligent wastewater treatment system which is characterized in that wastewater is purified stage by stage through a multi-stage treatment module, water quality parameters are detected in real time by using a water quality detection and sorting module, and pollution types are accurately identified by combining correlation calculation and a feature vector matching algorithm; the substandard wastewater is stored in a partitioned manner according to pollution types through an intelligent buffer storage module, and an electric partition plate is linked based on a dynamic capacity adjustment formula to realize self-adaptive adjustment of the cavity capacity; and the wastewater reflux judgment module compares the rechecked pollution type with the initial type, and dynamically matches the reflux path of the treatment unit corresponding to the pollution type. The problems that secondary reaction is easily caused and dynamic change of pollution types cannot be handled due to extensive identification of the pollution types and mixed storage in a buffer chamber in a traditional process are solved, the pollution types are accurately judged through wastewater backflow reinspection and dynamic partition storage, and the judgment accuracy and the treatment efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment and relates to an intelligent wastewater treatment system. Background Art

[0002] In the process of textile industrial production, a large amount of wastewater is generated. These textile wastewaters contain various pollutants, such as dyes, auxiliaries, fiber impurities, etc. If directly discharged without effective treatment, they will cause serious pollution to natural environments such as water bodies and soils, disrupt the ecological balance, and affect the growth of animals and plants and human health. Therefore, proper treatment of textile wastewater has become a key link in the sustainable development of the textile industry. With the increasingly strict environmental protection requirements, it is of great practical significance to develop an efficient, energy-saving and environmentally friendly textile wastewater treatment system.

[0003] In the prior art, there are numerous patented technologies for wastewater treatment. For example, an acidic wastewater treatment system and method with the Chinese patent publication number CN104058515A, the system includes an acidic wastewater regulating tank, a lift pump, a first-stage first neutralization tank, a first-stage oxidation tank, a first-stage second neutralization tank, a flocculation tank, a first-stage inclined plate thickener, a second-stage first neutralization tank, a second-stage oxidation tank, a second-stage second neutralization tank, a flocculation tank, a second-stage inclined plate thickener, a mechanical acceleration clarifier and a clear water tank connected in sequence, which reduces the treatment cost of acidic wastewater, comprehensively utilizes waste, and realizes optimal automation and recycling of water resources.

[0004] A desulfurized wastewater treatment system control method and a desulfurized wastewater treatment system with the Chinese patent publication number CN118771512A, which obtain the desulfurized wastewater inlet flow rate and the desulfurized wastewater return port flow rate, determine the desulfurized wastewater flow rate according to the desulfurized wastewater inlet flow rate and the desulfurized wastewater return port flow rate; obtain the desulfurized wastewater inlet concentration and the desulfurized wastewater return port concentration, and determine the initial desulfurized wastewater concentration according to the desulfurized wastewater inlet concentration and the desulfurized wastewater return concentration; obtain the desulfurized wastewater treatment target concentration and the live steam pressure; determine the live steam consumption according to the desulfurized wastewater flow rate, the initial desulfurized wastewater concentration, the desulfurized wastewater treatment target concentration and the live steam pressure; generate a live steam valve control instruction according to the live steam consumption, and control the action of the live steam valve through the live steam valve control instruction to adjust the live steam input amount to be the same as the live steam consumption.

[0005] However, the prior art still has certain limitations, specifically manifested as follows: 1) Most of the buffer tanks in the prior art are single cavities, which cannot classify and store unqualified wastewater according to the pollution type, and the chamber capacity is fixed. When the real-time wastewater flow fluctuates, it is easy to have the problem of insufficient utilization rate of the buffer chamber capacity, resulting in the interruption of the treatment process or waste of resources, and affecting the stability and economy of the system operation.

[0006] 2) In the prior art, the identification of pollution types is rough, and the targetedness of the return flow treatment is insufficient. Traditional water quality detection only judges whether the standard is met, and does not construct a pollution type feature vector based on the combination of exceeded parameters, making it impossible to accurately identify specific pollution types. This results in the inability to select corresponding treatment units for specific pollution types during the return flow treatment, and only full-process repeated treatment can be carried out, leading to low treatment efficiency, increased consumption of chemicals and energy.

[0007] 3) In the prior art, the return flow path is fixed and cannot cope with the dynamic changes of pollution types. The static wastewater in the buffer chamber is not periodically re-inspected, and the return flow path is not dynamically adjusted according to the re-inspection results. If the pollution type changes during the storage of wastewater, the fixed return flow path will not be able to effectively treat the new pollution type, resulting in repeated non-compliance of water quality and extended treatment cycles. Summary of the Invention

[0008] In view of this, to solve the problems of rough identification of pollution types and fixed return flow paths in the prior art, the present invention provides an intelligent wastewater treatment system, which realizes real-time water quality monitoring, pollution type identification, dynamic adjustment of buffer capacity and precise return flow treatment through multi-module collaboration, improving the system's adaptability and treatment effect.

[0009] The object of the present invention can be achieved through the following technical solutions: An intelligent wastewater treatment system includes the following modules: A multi-stage treatment module for transporting wastewater to a wastewater treatment reaction tank and sequentially performing multi-stage purification treatment on the wastewater through the wastewater treatment reaction tank.

[0010] A water quality detection and sorting module for real-time detecting the water quality parameters of the purified wastewater, performing fusion comparison and analysis with a preset standard water quality parameter threshold, determining whether the wastewater meets the discharge standard, and identifying the pollution type of the non-compliant wastewater based on the combination of exceeded parameters.

[0011] An intelligent buffer storage module for dividing the storage chamber of the wastewater buffer into multiple independent chambers, generating multi-type buffer chambers according to the pollution type of the wastewater, transporting the non-compliant wastewater to the corresponding type of buffer chamber, and dynamically adjusting the capacity of the corresponding buffer chamber based on the real-time input flow rate of the non-compliant wastewater.

[0012] A wastewater return flow judgment module for periodically re-inspecting the water quality parameters of the static wastewater stored in the buffer chamber, identifying the re-inspection pollution type of the static wastewater according to the re-inspection parameters, and determining the pollution type that the static wastewater needs to be returned for treatment based on the re-inspection pollution type.

[0013] A wastewater return flow treatment module for generating a return flow path according to the pollution type that the static wastewater needs to be returned for treatment, and re-returning the static wastewater along the return flow path for treatment until the water quality meets the standard and is discharged.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention adopts multiple types of independent buffer chambers and a dynamic capacity adjustment formula to solve the capacity management problems caused by the mixed storage of wastewater with different pollution types and flow fluctuations, realizes the classified storage of unqualified wastewater and the adaptive adjustment of the capacity of the buffer chambers, improves the storage efficiency and the system operation stability, and avoids the waste of the buffer chamber capacity.

[0015] (2) Based on the comparative analysis of the static wastewater re-inspection results and the pollution types, the present invention dynamically generates the reflux paths corresponding to single or multiple types of pollution and preferentially selects the high-priority treatment units, solves the problems of fixed reflux paths and inability to cope with the changes in pollution types, ensures the effective treatment of new pollution types, shortens the treatment cycle, and improves the water quality compliance rate.

[0016] (3) Through the similarity matching between the exceeded parameter feature vectors and the pollution type database, the present invention solves the problem of rough pollution type identification, accurately locates the pollution sources of unqualified wastewater, provides a clear guidance for the subsequent reflux treatment, improves the treatment pertinence, and reduces the ineffective consumption of chemicals and energy.

[0017] (4) The present invention uses a comprehensive scoring method of correlation calculation and weighted summation, combines the normalization processing of the differences between each water quality parameter and the standard value and the weight coefficients, solves the problem of inaccurate determination results of the traditional threshold comparison method, scientifically quantifies the comprehensive water quality status, realizes the accurate determination of the discharge standard, and ensures the compliance and reliability of wastewater discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal treatment units of the multi-stage treatment module of the present invention.

[0021] Figure 3 It is a dynamic capacity adjustment logic diagram of the electric regulating baffle of the intelligent buffer storage module of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figure 1 As shown, the present invention provides an intelligent wastewater treatment system, including: a multi-stage treatment module, a water quality detection and sorting module, an intelligent buffer storage module, a wastewater reflux judgment module, and a wastewater reflux treatment module.

[0024] The multi-stage treatment module is connected to the water quality detection and sorting module, the water quality detection and sorting module is connected to the intelligent buffer storage module, the intelligent buffer storage module is connected to the wastewater reflux judgment module, the wastewater reflux judgment module is connected to the wastewater reflux treatment module, and the wastewater reflux treatment module is connected to the multi-stage treatment module.

[0025] The multi-stage treatment module is used to transport wastewater to the wastewater treatment reaction tank, and the wastewater is sequentially subjected to multi-stage purification treatment through the wastewater treatment reaction tank.

[0026] Specifically, refer to Figure 2 As shown, the wastewater treatment reaction tank includes a physical treatment unit, a chemical treatment unit, a biological treatment unit, and a deep treatment unit.

[0027] The physical treatment unit mainly uses methods such as grids and sedimentation to remove suspended solid particles in the wastewater.

[0028] Specifically, taking the grid as an example, it is installed at the front end of the wastewater treatment system and can intercept larger suspended substances in the wastewater, such as branches and garbage, to prevent these large particulate matters from clogging or damaging subsequent treatment equipment. Sedimentation is to use the gravity effect to make the suspended particles in the wastewater naturally settle in the sedimentation tank, thereby separating from the water.

[0029] The chemical treatment unit adjusts the pH value of the wastewater or removes dissolved pollutants by adding chemical agents.

[0030] It should be noted that when adjusting the pH value, if the wastewater is too acidic, alkaline agents can be added for neutralization; if the wastewater is too alkaline, acidic agents are added for adjustment. For removing dissolved pollutants, the coagulation sedimentation method can be used, adding coagulants to make the dissolved pollutants in the wastewater coagulate into larger particles, and then removing them by sedimentation or filtration.

[0031] The biological treatment unit uses the metabolic function of microorganisms to degrade organic pollutants in the wastewater. Common biological treatment methods include the activated sludge method and the biofilm method.

[0032] Specifically, in the activated sludge process, wastewater is fully mixed with activated sludge containing a large number of microorganisms in an aeration tank. Under the action of oxygen, the microorganisms decompose the organic pollutants in the wastewater into carbon dioxide, water, and their own cell substances. In the biofilm process, microorganisms are attached to the surface of a solid carrier to form a biofilm. When the wastewater flows through the biofilm, the organic pollutants are adsorbed and decomposed by the microorganisms.

[0033] The advanced treatment unit uses membrane separation to further remove residual pollutants. Membrane separation technologies include microfiltration, ultrafiltration, nanofiltration, and reverse osmosis, etc.

[0034] Specifically, microfiltration and ultrafiltration can remove tiny particles, colloids, and macromolecular organic matters in the wastewater; nanofiltration and reverse osmosis can remove even finer ions, small molecular organic matters, etc.

[0035] It should be noted that in the above entire multi-stage treatment process, each unit does not operate independently, but cooperates and works together. The wastewater is treated successively through these units, gradually removing various pollutants, and realizing the transformation from sewage to up-to-standard water.

[0036] The water quality detection and sorting module is used to detect the water quality parameters of the purified wastewater in real time, conduct a fusion comparison and analysis with the preset standard water quality parameter thresholds, determine whether the wastewater meets the discharge standards, and identify the pollution types of the unqualified wastewater based on the combination of exceeded parameters.

[0037] The specific method for the water quality detection and sorting module to determine whether the wastewater meets the discharge standards is as follows: taking the preset standard water quality parameter thresholds as the reference sequence, taking the actually detected water quality parameters as the comparison sequence, calculating the correlation degree between each water quality parameter and the corresponding standard water quality parameter, obtaining a comprehensive score based on the weighted sum of the correlation degrees, and determining whether it meets the discharge standards based on the comparison result between the calculated comprehensive score and the preset comprehensive score threshold.

[0038] Specifically, the detection of the water quality parameters uses various professional sensors and detection equipment to detect multiple water quality parameters of the purified wastewater in real time. For example, a turbidity sensor is used to detect the residual amount of suspended solids after the physical treatment unit, a pH sensor is used to detect the acidity and alkalinity of the wastewater after the chemical treatment unit, a BOD sensor is used to detect the concentration of organic matters with biochemical oxygen demand after the biological treatment unit, and a heavy metal ion concentration sensor is used to detect the concentration of heavy metal ions after the advanced treatment unit, etc.

[0039] The method for calculating the correlation degree between each water quality parameter and the corresponding standard water quality parameter is: comparing each water quality parameter with the corresponding standard water quality parameter threshold to obtain the difference between each water quality parameter and the corresponding standard water quality parameter , , is the number for each water quality parameter.

[0040] Normalize the said difference to obtain a normalized difference , where is the standard water quality parameter threshold corresponding to the i-th water quality parameter.

[0041] According to the normalized difference, use a preset correlation degree calculation formula to calculate the correlation degree between each water quality parameter and the corresponding standard water quality parameter. The correlation degree calculation formula is: where represents the correlation degree between the -th water quality parameter and the corresponding standard water quality parameter. When is closer to 1, it indicates that the compliance degree of this parameter is higher.

[0042] The method for obtaining a comprehensive score based on weighted summation of the correlation degree is as follows: Multiply the correlation degree between each water quality parameter and the corresponding standard water quality parameter by its corresponding weight coefficient to obtain a weighted correlation degree, and add up all the weighted correlation degrees to obtain a comprehensive score.

[0043] Specifically, the weight coefficient is determined by the analytic hierarchy process. Build a hierarchical structure with the target layer being to determine the weight coefficient of water quality parameters, the criterion layer combining the core requirements of wastewater treatment, and selecting key influencing factors as criteria, such as the harm degree of pollutants, treatment cost, environmental risk, etc. Each water quality parameter of the purified wastewater is listed in the scheme layer. For each factor in the criterion layer, make pairwise comparisons and use the 1-9 scale method. For example, if the harm degree of pollutants is slightly more important than the treatment cost, then in the judgment matrix, the element corresponding to the harm degree of pollutants and the treatment cost is assigned a value of 3, and vice versa, the element corresponding to the treatment cost and the harm degree of pollutants is assigned a value of 1 / 3. Finally, construct a criterion layer judgment matrix A. Similarly, with each factor in the criterion layer as the benchmark, make pairwise comparisons of the water quality parameters in the scheme layer respectively. For each criterion, a corresponding scheme layer judgment matrix B will be obtained. For each row element of the judgment matrix, first calculate its geometric mean, and then normalize it to obtain the weight. Multiply the criterion layer weight by the scheme layer weights under each criterion to finally obtain the corresponding weight coefficient.

[0044] The method for the water quality detection and sorting module to identify the pollution type of unqualified wastewater based on the combination of exceeded parameters includes the following steps: Obtain a set of feature vectors for multiple pollution types. The set of feature vectors is the reference exceeded ratio of multiple key parameters, and establish a pollution type database.

[0045] Compare and analyze the water quality parameters of the purified wastewater with the preset standard water quality parameter thresholds, identify the exceeded parameters and their exceeded ratios, and form a set of exceeded parameter feature vectors.

[0046] The feature vector set of the excessive-standard parameters is matched with the feature vector sets of various pollution types in the pollution type database to obtain the similarity between the feature vector set of the excessive-standard parameters and the feature vector sets of various pollution types, and the pollution types with similarity higher than the set similarity threshold are selected as the pollution types of the substandard wastewater.

[0047] The pollution type database stores the characteristic parameter combinations of 6 types of pollution types. Among them, the suspended solid pollution type corresponds to the physical treatment unit, the heavy metal pollution type and the pH pollution type correspond to the chemical-physical treatment unit, the organic matter pollution type and the nutrient type pollution correspond to the biological treatment unit, and the trace heavy metal ion pollution type corresponds to the advanced treatment unit. For each type of pollution type, there is a corresponding feature vector set. The feature vector consists of the exceeding ratio ranges of 3-5 key parameters corresponding to each pollution type. For different pollution types, the key parameters are different. For example, the key parameters of heavy metal pollution may include the contents of heavy metal elements such as lead, mercury, cadmium, and arsenic.

[0048] Specifically, the excessive-standard parameter refers to the parameter whose actual detected value of the water quality of the purified wastewater exceeds the preset standard water quality parameter threshold.

[0049] It should be noted that for each excessive-standard parameter, its exceeding ratio is the ratio of the difference between the detected value of the water quality parameter of the purified wastewater and the preset standard water quality parameter threshold to the preset standard water quality parameter threshold.

[0050] Among them, the similarity analysis method between the feature vector set of the excessive-standard parameters and the feature vector sets of various pollution types is calculated by cosine similarity, and the similarity threshold is set to 0.8.

[0051] The intelligent buffer storage module is used to divide the storage chamber of the wastewater buffer into multiple independent chambers, generate multiple types of buffer chambers according to the pollution type of the wastewater, transport the substandard wastewater to the corresponding type of buffer chamber, and dynamically adjust the capacity of the corresponding buffer chamber based on the real-time input flow of the substandard wastewater.

[0052] Specifically, the buffer chamber is divided into multiple independent chambers by an electric regulating partition, including the treatment processes of multiple-stage treatment modules corresponding to the heavy metal pollution chamber, the organic matter pollution chamber, the acid-base imbalance chamber, etc. Each chamber is equipped with an independent inlet valve and outlet valve. The electric regulating partition uses a high molecular composite material, and its surface is treated with a nano-coating. Its corrosion resistance meets the requirements of complex environments containing heavy metal ions, and it can be driven by a motor to move horizontally to flexibly adjust the volume of each chamber.

[0053] It should be noted that electromagnetic flowmeters are equipped at the inlets and outlets of each chamber to collect the input flow and output flow in real time. Ultrasonic level gauges are installed on the side walls of the chambers to monitor the liquid level height in real time and convert it into the remaining capacity.

[0054] Refer to Figure 3 As shown, the specific content of dynamically adjusting the capacity of the corresponding buffer chamber is as follows: Compare the real-time input flow rate of the unqualified wastewater with the output flow rate of the corresponding buffer chamber. When the real-time input flow rate of the wastewater is less than the output flow rate of the corresponding buffer chamber, the corresponding electric regulating partition of the buffer chamber does not need to be adjusted. On the contrary, take the real-time input flow rate, the remaining capacity of the buffer chamber, the output flow rate of the buffer chamber, and the expected target capacity as input parameters, and calculate the required adjustment capacity of the buffer chamber for transporting unqualified wastewater through the dynamic capacity adjustment formula.

[0055] Among them, when the real-time input flow rate of the chamber is greater than the output flow rate of the chamber, it is determined that there is a risk of capacity overload in the current chamber, and then the dynamic adjustment process is started.

[0056] The dynamic capacity adjustment operation formula is: , where is the required adjustment capacity of the buffer chamber for transporting unqualified wastewater, is the flow rate adjustment coefficient, is the remaining capacity adjustment coefficient, t is the unit time interval, is the real-time input flow rate, is the remaining capacity of the buffer chamber, is the output flow rate of the buffer chamber, is the expected target capacity.

[0057] Specifically, is used to measure the influence degree of the difference between the real-time input flow rate and the output flow rate on the capacity adjustment of the buffer chamber, and its value range is between 0 and 1, and 0.5 is set. is used to measure the effect degree of the difference between the remaining capacity of the buffer chamber and the expected target capacity on the capacity adjustment, and its value is between 0 and 1, and 0.5 is set. t is a time measure, and 1 hour is set to determine the time range for calculating the influence of the flow rate difference. is the ideal capacity value of the buffer chamber preset in advance, expressed in volume units.

[0058] Take the ratio of the required adjustment capacity of the buffer chamber for transporting unqualified wastewater to the standard area of the electric regulating partition as the basic adjustment distance of the electric regulating partition of the corresponding buffer chamber; Compare the remaining capacity of its adjacent buffer chamber with the preset safety capacity threshold. When the remaining capacity is greater than the preset safety capacity threshold, take the product of the basic adjustment distance and the set scaling coefficient as the preliminary moving distance on both sides of the corresponding electric regulating partition.

[0059] Specifically, the set scaling coefficient is the ratio of the remaining capacity of the adjacent buffer chamber to the preset safety capacity threshold.

[0060] Compare the sum of the preliminary moving distances on both sides of the electrically adjustable partition with the basic adjustment distance. If the sum of the preliminary moving distances on both sides is less than the basic adjustment distance, obtain the remaining capacity of the buffer chamber adjacent to its corresponding buffer chamber, and repeat the above steps until the basic adjustment distance is satisfied.

[0061] It should be noted that if the remaining capacities of the adjacent buffer chambers on both sides cannot meet the capacity requirements, such as both adjacent chambers on both sides are close to the safety threshold, trigger the multi-stage partition linkage to achieve cross-chamber capacity redistribution. When all adjacent chambers cannot provide effective capacity, close the inlet valve to slow down the entry of wastewater and quickly drain the wastewater in the buffer chamber at the same time.

[0062] The wastewater reflux judgment module is used to periodically recheck the water quality parameters of the static wastewater stored in the buffer chamber, identify the rechecked pollution type of the static wastewater according to the rechecked parameters, and determine the pollution type that the static wastewater needs to be reflux-treated based on the rechecked pollution type.

[0063] The method for determining the pollution type that the static wastewater needs to be reflux-treated based on the rechecked pollution type is as follows: Compare the rechecked pollution type of the static wastewater with the pollution type of the unqualified wastewater. If there is a same pollution type between the rechecked pollution type and the pollution type of the unqualified wastewater, then use the pollution type of the unqualified wastewater as the pollution type that the static wastewater needs to be reflux-treated. If the rechecked pollution type is different from the pollution type of the unqualified wastewater, then use the rechecked pollution type as the pollution type that the static wastewater needs to be reflux-treated.

[0064] Specifically, at the water outlet of each buffer chamber of the intelligent buffer storage module, install an on-line water quality detection sensor, which shares the sensor type with the water quality detection and sorting module, and is used to periodically recheck the static wastewater.

[0065] It should be noted that when the rechecked pollution type is different from the pollution type of the unqualified wastewater, it may be that the purified wastewater is in a flowing state during detection and is affected by various factors. Therefore, the pollution type detected after a period of static storage is more accurate and used as the judgment standard.

[0066] The wastewater reflux treatment module is used to generate a reflux path according to the pollution type that the static wastewater needs to be reflux-treated, and reflux the static wastewater along the reflux path for re-treatment until the water quality meets the standard and is discharged.

[0067] The steps of generating a reflux path according to the pollution type that the static wastewater needs to be reflux-treated include: When the pollution type that the static wastewater needs to be reflux-treated is a single pollution type, perform wastewater reflux treatment on the treatment unit corresponding to the rechecked pollution type.

[0068] When the types of pollution that require the recirculation treatment of static wastewater are multiple types of pollution, the priorities of the treatment units corresponding to the multiple types of pollution are extracted, and the treatment unit with the highest priority is selected to perform the wastewater recirculation treatment.

[0069] Specifically, when the type of pollution that requires the recirculation treatment of static wastewater is a single type of pollution, the treatment unit corresponding to the type of pollution that requires the recirculation treatment of static wastewater is directly called to perform the wastewater recirculation treatment. For example, if the type of pollution that requires the recirculation treatment of static wastewater is organic pollution, the effluent valve is opened to perform the wastewater recirculation treatment on the biological treatment unit.

[0070] It should be noted that the priorities of the treatment units corresponding to multiple types of pollution are Physical treatment unit > Chemical treatment unit > Biological treatment unit > Advanced treatment unit. For example, when the types of pollution of static wastewater are suspended solid pollution and heavy metal pollution, the suspended solid pollution is removed by precipitation in the physical treatment unit, while the heavy metal pollution undergoes a neutralization reaction in the chemical treatment unit. Since in the treatment process of the wastewater treatment reaction tank, the physical treatment unit is located before the chemical treatment unit, it is determined that the wastewater recirculation treatment is performed on the physical treatment unit.

[0071] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product.

[0072] Those of ordinary skill in the art can realize that the modules and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0073] In addition, in each embodiment of the present application, the functional modules can be integrated into one processing module, or each module can exist physically alone, or two or more modules can be integrated into one module.

[0074] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0075] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent wastewater treatment system, characterized in that: Including: A multi-stage treatment module that conveys wastewater to a wastewater treatment reaction tank, and the wastewater is sequentially subjected to multi-stage purification treatment through the wastewater treatment reaction tank; A water quality detection and sorting module that real-time detects the water quality parameters of the purified wastewater, performs a combined comparison and analysis with a preset standard water quality parameter threshold, determines whether the wastewater meets the discharge standard, and identifies the pollution type of the non-compliant wastewater based on the combination of exceeded parameters; An intelligent buffer storage module that divides the storage chamber of the wastewater buffer into multiple independent chambers, generates multi-type buffer chambers according to the pollution type of the wastewater, conveys the non-compliant wastewater to the corresponding type of buffer chamber, and dynamically adjusts the capacity of the corresponding buffer chamber based on the real-time input flow of the non-compliant wastewater; A wastewater reflux judgment module that periodically re-inspects the water quality parameters of the static wastewater stored in the buffer chamber, identifies the re-inspection pollution type of the static wastewater based on the re-inspection parameters, and determines the pollution type that the static wastewater needs to be reflux-treated based on the re-inspection pollution type; A wastewater reflux treatment module that generates a reflux path according to the pollution type that the static wastewater needs to be reflux-treated, and re-conveys the static wastewater along the reflux path for treatment until the water quality meets the standard and is discharged.

2. An intelligent wastewater treatment system according to claim 1, wherein: The multi-stage treatment module includes a physical treatment unit, a chemical treatment unit, a biological treatment unit, and a deep treatment unit. The physical treatment unit is used to remove suspended solid particles in the wastewater. The chemical treatment unit adjusts the pH value of the wastewater or removes dissolved pollutants by adding chemical agents. The biological treatment unit uses microorganisms to degrade organic pollutants in the wastewater. The deep treatment unit removes residual pollutants through membrane separation.

3. An intelligent wastewater treatment system according to claim 1, wherein: The specific method for determining whether the wastewater meets the discharge standard in the water quality detection and sorting module is: Taking the preset standard water quality parameter threshold as a reference sequence, taking the actually detected water quality parameters as a comparison sequence, calculating the correlation degree between each water quality parameter and the corresponding standard water quality parameter, obtaining a comprehensive score based on the weighted sum of the correlation degrees, and comparing the calculated comprehensive score with the preset comprehensive score threshold to determine whether it meets the discharge standard.

4. An intelligent wastewater treatment system according to claim 3, wherein: The method for calculating the correlation degree between each water quality parameter and the corresponding standard water quality parameter is: Compare each water quality parameter with the corresponding standard water quality parameter threshold to obtain the difference between each water quality parameter and the corresponding standard water quality parameter , , is the number of each water quality parameter; Normalize the difference value to obtain a normalized difference value , where is the standard water quality parameter threshold corresponding to the i-th water quality parameter; According to the normalized difference, calculate the correlation degree between each water quality parameter and the corresponding standard water quality parameter by using a preset correlation degree calculation formula. The correlation degree calculation formula is: , where represents the correlation degree between the water quality parameter and the corresponding standard water quality parameter.

5. An intelligent wastewater treatment system according to claim 3, wherein: The method for obtaining a comprehensive score based on the weighted sum of the correlation degrees is: multiplying the correlation degree between each water quality parameter and the corresponding standard water quality parameter by its corresponding weight coefficient to obtain a weighted correlation degree; adding all the weighted correlation degrees to obtain a comprehensive score.

6. An intelligent wastewater treatment system according to claim 1, wherein: The method for the water quality detection and sorting module to identify the pollution type of the non-compliant wastewater based on the combination of exceeded parameters includes the following steps: Obtain a set of characteristic vectors of multiple pollution types, where the set of characteristic vectors is the reference exceeded ratio of multiple key parameters, and establish a pollution type database; Compare and analyze the water quality parameters of the purified wastewater with the preset standard water quality parameter thresholds, identify the exceeded parameters and their exceeding ratios, and form a set of characteristic vectors of exceeded parameters. Perform similarity matching between the set of characteristic vectors of exceeded parameters and the set of characteristic vectors of each pollution type in the pollution type database to obtain the similarity between the set of characteristic vectors of exceeded parameters and the set of characteristic vectors of each pollution type, and screen out the pollution types with similarity higher than the set similarity threshold as the pollution types of the unqualified wastewater.

7. An intelligent wastewater treatment system according to claim 1, wherein: The specific content of dynamically adjusting the capacity of the corresponding buffer chamber is as follows: Compare the real-time input flow rate of the unqualified wastewater with the output flow rate of the corresponding buffer chamber. When the real-time input flow rate of the wastewater is less than the output flow rate of the corresponding buffer chamber, the corresponding electric regulating partition of the buffer chamber does not need to be adjusted. Otherwise, use the real-time input flow rate, the remaining capacity of the buffer chamber, the output flow rate of the buffer chamber and the desired target capacity as input parameters, and calculate the required adjustment capacity of the buffer chamber for transporting the unqualified wastewater through the dynamic capacity adjustment formula. Take the ratio of the required adjustment capacity of the buffer chamber for transporting the unqualified wastewater to the standard area of the electric regulating partition as the basic adjustment distance of the electric regulating partition of the corresponding buffer chamber. Compare the remaining capacity of its adjacent buffer chamber with the preset safety capacity threshold. When the remaining capacity is greater than the preset safety capacity threshold, take the product of the basic adjustment distance and the set scaling factor as the preliminary moving distance on both sides of the corresponding electric regulating partition. Compare the sum of the preliminary moving distances on both sides of the electric regulating partition with the basic adjustment distance. If the sum of the preliminary moving distances on both sides is less than the basic adjustment distance, obtain the remaining capacity of the buffer chamber close to the corresponding buffer chamber of its adjacent buffer chamber, and repeat the above steps until the basic adjustment distance is satisfied.

8. An intelligent wastewater treatment system according to claim 7, wherein: The dynamic capacity adjustment operation formula is as follows: , where is the capacity to be adjusted for the non-compliant wastewater transfer buffer chamber, is the flow rate adjustment coefficient, is the remaining capacity adjustment coefficient, is the unit time interval, is the real-time input flow rate, is the remaining capacity of the buffer chamber, is the output flow rate of the buffer chamber, is the desired target capacity.

9. An intelligent wastewater treatment system according to claim 1, wherein: The method for determining the pollution type that the static wastewater needs to be recycled based on the re-inspected pollution type is as follows: Compare the re-inspected pollution type of the static wastewater with the pollution type of the unqualified wastewater. If the re-inspected pollution type is the same as the pollution type of the unqualified wastewater, take the pollution type of the unqualified wastewater as the pollution type that the static wastewater needs to be recycled. If the re-inspected pollution type is different from the pollution type of the unqualified wastewater, take the re-inspected pollution type as the pollution type that the static wastewater needs to be recycled.

10. An intelligent wastewater treatment system according to claim 1, wherein: The steps of generating a recycling path according to the pollution type that the static wastewater needs to be recycled include: When the pollution type that the static wastewater needs to be recycled is a single pollution type, perform wastewater recycling on the treatment unit corresponding to the re-inspected pollution type. When the pollution types that the static wastewater needs to be recycled are multiple pollution types, extract the priorities of the treatment units corresponding to the multiple pollution types, and screen out the treatment unit with the highest priority to perform wastewater recycling.

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