Advanced oxidation filtration system and method

Abstract

The application discloses a kind of advanced oxidation filtration system and method, the outlet of solution tank is connected with the inlet of pipeline mixer by first pipeline, the outlet of raw water tank is connected with the inlet of pipeline mixer by second pipeline, the outlet of raw water tank is connected with the inlet of US activated filter by third pipeline, the outlet of pipeline mixer is connected with the inlet of US activated filter by ultraviolet generator, first turbidimeter is arranged on the second pipeline;The water outlet of US activated filter is connected with the inlet of water production tank by fourth pipeline, second turbidimeter is arranged on the fourth pipeline in sequence along water flow direction;Ultrasonic probe is arranged on the US activated filter, and the ultrasonic probe is connected with alternating current power supply by ultrasonic generator main body, and the system and method can be handled at low cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water treatment, and relates to a high-level oxidation and filtration system and method. BACKGROUND

[0002] With the process of urbanization, the urban population is increasing, and the corresponding sewage production is also increasing. The traditional industrial wastewater treatment process generally adopts a combined process of "pretreatment + biochemical treatment + advanced treatment" combined with a "membrane concentration + evaporation crystallization" combined process of concentrated salt water treatment to achieve zero discharge. This method has poor adaptability to water quality changes. When the raw water quality fluctuates greatly, the treatment effect of each treatment unit may be affected, resulting in unstable effluent water quality. Some special pollutants or high-concentration refractory organic matter may not be effectively removed, affecting the overall treatment effect and making it difficult to meet the increasingly stringent environmental protection discharge standards.

[0003] Traditional AOPs use hydroxyl radicals as active intermediates to oxidize and degrade pollutants in wastewater, but their oxidation capacity and reactivity change significantly under different pH conditions, which makes it necessary to strictly control the pH value in actual wastewater treatment, increasing the complexity and cost of the treatment process. The lifetime of hydroxyl radicals is extremely short, usually on the order of nanoseconds. This means that its migration and reaction with pollutants in wastewater are very limited in time, and many times it has been quenched before it has fully exerted its oxidizing effect, resulting in low utilization efficiency of the oxidizing agent, and the need to invest more oxidizing agents to achieve the expected treatment effect, further increasing the treatment cost. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a high-level oxidation and filtration system and method that can reduce the treatment cost.

[0005] To achieve the above purpose, the present application discloses a high-level oxidation and filtration system, comprising a solution tank, a pipeline mixer, a raw water tank, a US activated filter, a product water tank and an alternating current power supply.

[0006] The outlet of the solution tank is connected to the inlet of the pipeline mixer through a first pipeline, the outlet of the raw water tank is connected to the inlet of the pipeline mixer through a second pipeline, the outlet of the raw water tank is connected to the inlet of the US activated filter through a third pipeline, the outlet of the pipeline mixer is connected to the inlet of the US activated filter through an ultraviolet generator, and a first turbidity meter is arranged on the second pipeline.

[0007] The product water outlet of the US activated filter is connected to the inlet of the product water tank through a fourth pipeline, and a second turbidity meter is arranged on the fourth pipeline in the water flow direction.

[0008] An ultrasonic probe is installed on the US activation filter, and the ultrasonic probe is connected to an AC power source via the main body of the ultrasonic generator.

[0009] A further improvement of the advanced oxidation-co-filtration system described in this invention is that:

[0010] Furthermore, a first booster pump is installed on the first pipeline.

[0011] Furthermore, a second booster pump is installed on the second pipeline.

[0012] Furthermore, a third booster pump is installed on the third pipeline.

[0013] Furthermore, the fourth pipe is sequentially equipped with a second turbidity meter, a fourth booster pump, a flow meter, and an oxidation-reduction potential meter along the water flow direction.

[0014] Furthermore, the outlet of the product water tank is connected to the backwash water inlet of the US activation filter via the fifth booster pump.

[0015] Furthermore, it also includes a backwash fan, the outlet of which is connected to the backwash air inlet of the US activation filter.

[0016] Furthermore, a stirrer is installed inside the solution tank.

[0017] This invention discloses an advanced oxidation-co-filtration method, comprising the following steps:

[0018] The persulfate from the solution tank is mixed with the raw water from the raw water tank via a pipeline mixer before entering the UV generator. In the UV generator, UV-induced activation is used to break the O2O bonds in the persulfate, generating sulfate free radicals (SO42-). - The water is first processed by an ultrasonic probe, which then decomposes and oxidizes the organic matter in the raw water. The water then enters the US activation filter, where ultrasonic waves emitted by the probe further induce and activate the incompletely decomposed persulfate in the water, and further oxidize and degrade the organic matter in the raw water.

[0019] Furthermore, it also includes:

[0020] The turbidity data of the raw water is detected by the first turbidity meter, and the turbidity data of the produced water is detected by the second turbidity meter.

[0021] The turbidity data of the raw water and the turbidity data of the produced water are standardized.

[0022] The standardized turbidity data of raw water and product water are input into the trained DQN model to obtain the optimized ultraviolet wavelength λ and ultrasonic frequency f.

[0023] The ultraviolet generator and the main body of the ultrasonic generator are controlled according to the optimized ultraviolet wavelength λ and ultrasonic frequency f.

[0024] The present invention has the following beneficial effects:

[0025] In specific operation, the advanced oxidation synergistic filtration system and method described in this invention employs a connection between an ultraviolet generator and a US activation filter. UV-induced activation of persulfate generates sulfate free radicals, which initially decompose and oxidize organic matter in the raw water. The US activation filter then further induces and activates incompletely decomposed persulfate, generating hydroxyl groups and other active substances, immediately oxidizing and degrading organic pollutants in the raw water. The synergistic effect of these two methods enhances the system's ability to treat pollutants, avoids the addition of excessive oxidants, and reduces costs. It overcomes some limitations of traditional advanced oxidation processes, providing a new approach and method for treating novel pollutants and improving wastewater treatment efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a system diagram of the present invention.

[0028] Figure 2 This is a flowchart of the method of the present invention.

[0029] Among them, 1 is the solution tank, 2 is the stirrer, 31 is the first booster pump, 32 is the second booster pump, 33 is the third booster pump, 34 is the fourth booster pump, 35 is the fifth booster pump, 4 is the pipeline mixer, 5 is the ultraviolet generator, 6 is the AC power supply, 7 is the ultrasonic probe, 8 is the US activation filter, 9 is the flow meter, 10 is the oxidation-reduction potential, 11 is the product water tank, 12 is the raw water tank, 13 is the main body of the ultrasonic generator, 141 is the first turbidity meter, 142 is the second turbidity meter, and 15 is the backwash fan. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this invention generally indicates that the preceding and following objects have an "or" relationship.

[0034] It should be understood that although terms such as first, second, third, etc., may be used in the embodiments of the present invention to describe the preset range, these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from one another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0035] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0038] Example 1

[0039] refer to Figure 1 The advanced oxidation co-filtration system of the present invention includes a solution tank 1, a pipeline mixer 4, a raw water tank 12, a US activation filter 8, a product water tank 11, and an AC power supply 6.

[0040] The outlet of solution tank 1 is connected to the inlet of pipe mixer 4 via a first pipe; the outlet of raw water tank 12 is connected to the inlet of pipe mixer 4 via a second pipe; the outlet of raw water tank 12 is connected to the inlet of US activation filter 8 via a third pipe; and the outlet of pipe mixer 4 is connected to the inlet of US activation filter 8 via ultraviolet generator 5. A first booster pump 31 is installed on the first pipe; a second booster pump 32 and a first turbidity meter 141 are installed on the second pipe; and a third booster pump 33 is installed on the third pipe.

[0041] The outlet of the US activated filter 8 is connected to the inlet of the product water tank 11 via a fourth pipe. The fourth pipe is equipped with a second turbidity meter 142, a fourth booster pump 34, a flow meter 9 and an oxidation-reduction potential 10 in sequence along the water flow direction. The outlet of the backwash fan 15 is connected to the backwash air inlet of the US activated filter 8. The outlet of the product water tank 11 is connected to the backwash water inlet of the US activated filter 8 via a fifth booster pump 35.

[0042] An ultrasonic probe 7 is installed on the US activation filter 8, and the ultrasonic probe 7 is connected to the AC power supply 6 via the ultrasonic generator body 13.

[0043] The solution tank 1 is equipped with a stirrer 2. The solution tank 1 is the place for dissolving and preparing persulfate. The stirrer 2 stirs the solution at a uniform speed to dissolve it. The solution tank 1 must be sealed and protected from light. The persulfate can be any one or more of sodium persulfate (Na2S2O8), potassium persulfate (K2S2O8), and ammonium persulfate ((NH4)2S2O8).

[0044] The function of the ultraviolet generator 5 is to use UV-induced activation to break the O2O bonds in persulfate, generating sulfate free radicals (SO42-). - ·), possessing strong oxidizing properties, it initially decomposes and oxidizes organic matter in raw water. The specific principle is as follows:

[0045]

[0046] It should be noted that the effective wavelength for the initial decomposition is 265-365nm.

[0047] The synergistic filter consists of an ultrasonic probe 7, an AC power supply 6, and an ultrasonic generator body 13. Specifically, the ultrasonic probes 7 are evenly distributed in the water inlet area of ​​the US activation filter 8 and fixed on the inner wall of the US activation filter 8. The ultrasonic probes 7 are connected to the ultrasonic generator body 13 and are equipped with an AC power supply 6.

[0048] The function of the US activation filter 8 is to further induce and activate the incompletely decomposed persulfate in the ultraviolet generator 5 by using the filter and the US ultrasonic generator in a collaborative manner, thereby reducing the operating pressure of the filter media.

[0049] It should be noted that the function of the ultrasonic generator is to induce persulfate to produce hydroxyl groups and other active substances, thereby immediately oxidizing and degrading organic pollutants in the raw water. In this embodiment, the ultrasonic generator operates at a frequency of 30-50Hz, and the specific principle is as follows:

[0050]

[0051] SO4 - ·+OH - →SO4 2- +OH·

[0052] HSO5 - →SO4 - ·+OH·

[0053] Furthermore, the effluent from the US activated filter 8 enters the product water tank 11.

[0054] Example 2

[0055] The advanced oxidation-co-filtration method of the present invention includes the following steps:

[0056] 1) Data collection: The turbidity data of the raw water is detected by the first turbidity meter 141, and the turbidity data of the produced water is detected by the second turbidity meter 142;

[0057] 2) Data preprocessing: Standardize the turbidity data obtained from the detection;

[0058] In practical data processing, different operating conditions may result in different units and magnitudes of data. Z-score standardization can transform these data of different magnitudes to a relatively uniform scale, allowing them to participate equally in subsequent data analysis. That is, for turbidity data x at any given time in the system... i They all Ultimately, z i Used for model training;

[0059] Where μ is the mean of all turbidity data, i.e. σ is the standard deviation of all turbidity data, i.e.

[0060] 3) A random forest regression model was used to predict the effluent turbidity *n* corresponding to ultraviolet wavelength and ultrasonic frequency under different operating conditions and influent conditions. This model was then used to train the random forest regression model to learn the input features, namely the turbidity data *n0* of the raw water and the turbidity data *n* of the produced water, thus establishing a relationship between them. The trained model.

[0061] 41) Set up a state space S, which includes the turbidity data n0 of the raw water and the turbidity data n of the produced water;

[0062] 42) Define motion space A, which includes ultraviolet wavelength λ and ultrasonic frequency f.

[0063] 5) Reinforcement Learning Training: A DQN model is used to optimize ultraviolet (UV) intensity and ultrasonic frequency. During model training, the learning rate α and discount factor γ are adjusted. The trained DQN model is then used to select the optimal UV intensity and frequency in new environments. The model training iteration formula is Q(s...). t ,α t )→Q(s t ,α t )+α(r t +γmax a' Q(s t+1 ,α')-Q(s t ,α tThe Q-value function is updated through multiple iterations, and the UV intensity and frequency are adjusted according to the strategy, which is then used to select the optimal UV intensity and frequency in a new environment.

[0064] 6) Feedback and updates;

[0065] Calculate the removal rate of the system Feedback and updates to the DQN model are provided based on the new rewards to further optimize and adjust the strategy, and to make more accurate optimization decisions in future steps.

[0066] 6) Execute the optimization model;

[0067] The turbidity data of the current raw water and the turbidity data of the produced water are obtained. The turbidity data of the current raw water and the turbidity data of the produced water are input into the trained DQN model to obtain the optimized ultraviolet wavelength λ and ultrasonic frequency f. The ultraviolet generator 5 and the ultrasonic generator body 13 are controlled according to the optimized ultraviolet wavelength λ and ultrasonic frequency f.

[0068] It should be noted that the present invention has the following characteristics:

[0069] This invention utilizes sulfate radicals generated from the decomposition of persulfate, which have high redox potential and longer lifespan. Compared with traditional AOPs with hydroxyl radicals as active intermediates, it has a higher removal rate for recalcitrant organic matter and can more effectively treat high-concentration industrial wastewater, improving the quality of influent water from the source.

[0070] This invention uses an ultraviolet generator 5 connected to a US activation filter 8. The UV-induced activation of persulfate generates sulfate free radicals to initially decompose and oxidize organic matter in the raw water. The US activation filter 8 then further induces and activates the incompletely decomposed persulfate to generate hydroxyl groups and other active substances, which immediately oxidize and degrade organic pollutants in the raw water. The two work synergistically to improve the system's ability to treat pollutants.

[0071] This invention incorporates online monitoring instruments, valves, and control algorithms. It standardizes data based on z-scores, uses a random forest regression model to predict the effluent turbidity corresponding to ultraviolet wavelengths and ultrasonic frequencies under different operating conditions, and utilizes a DQN model for reinforcement learning training to optimize ultraviolet intensity and ultrasonic frequency. It can automatically adjust to the optimal working state according to actual conditions, thereby improving the system's adaptability and processing efficiency.

[0072] Example 3

[0073] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the advanced oxidation-co-filtration method, for example including: detecting turbidity data of raw water using a first turbidimeter 141 and detecting turbidity data of produced water using a second turbidimeter 142; standardizing the turbidity data of the raw water and the produced water; inputting the standardized turbidity data of the raw water and the produced water into a trained DQN model to obtain optimized ultraviolet wavelength λ and ultrasonic frequency f; and controlling an ultraviolet generator 5 and an ultrasonic generator body 13 according to the optimized ultraviolet wavelength λ and ultrasonic frequency f. The memory may include RAM, such as high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device. The processor, network interface, and memory are interconnected via an internal bus, which may be an industry standard architecture bus, a peripheral component interconnection standard bus, an extended industry standard architecture bus, etc., and the bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs; specifically, the program may include program code, which includes computer operation instructions. The memory may include main memory and non-volatile memory, and provides instructions and data to the processor.

[0074] Example 4

[0075] A computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the advanced oxidation-co-filtration method, for example including: detecting turbidity data of raw water using a first turbidimeter 141 and detecting turbidity data of produced water using a second turbidimeter 142; standardizing the turbidity data of the raw water and the produced water; inputting the standardized turbidity data of the raw water and the produced water into a trained DQN model to obtain optimized ultraviolet wavelength λ and ultrasonic frequency f; and controlling an ultraviolet generator 5 and an ultrasonic generator body 13 according to the optimized ultraviolet wavelength λ and ultrasonic frequency f. Specifically, the computer-readable storage medium includes, but is not limited to, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0076] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0077] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0081] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0082] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An advanced oxidation-co-filtration method, characterized in that, Based on the advanced oxidation co-filtration system, the advanced oxidation co-filtration system includes a solution tank (1), a pipeline mixer (4), a raw water tank (12), a US activation filter (8), a product water tank (11), and an AC power supply (6). The outlet of the solution tank (1) is connected to the inlet of the pipe mixer (4) via the first pipe. The outlet of the raw water tank (12) is connected to the inlet of the pipe mixer (4) via the second pipe. The outlet of the raw water tank (12) is connected to the inlet of the US activation filter (8) via the third pipe. The outlet of the pipe mixer (4) is connected to the inlet of the US activation filter (8) via the ultraviolet generator (5). A first turbidity meter (141) is installed on the second pipe. The outlet of the US activated filter (8) is connected to the inlet of the water tank (11) via a fourth pipe. A second turbidity meter (142) is installed on the fourth pipe along the water flow direction. An ultrasonic probe (7) is provided on the US activation filter (8), and the ultrasonic probe (7) is connected to the AC power supply (6) via the ultrasonic generator body (13). Includes the following steps: The persulfate output from the solution tank (1) and the raw water output from the raw water tank (12) are mixed through the pipeline mixer (4) and then enter the ultraviolet generator (5). In the ultraviolet generator (5), the OO bonds in the persulfate are broken by UV-induced activation, generating sulfate free radicals (SO4). - •), and initially decompose and oxidize the organic matter in the raw water, and then enter the US activation filter (8), and use the ultrasonic waves emitted by the ultrasonic probe (7) to further induce and activate the incompletely decomposed persulfate in the water, and further oxidize and degrade the organic matter in the raw water. Also includes: The turbidity data of the raw water is detected by the first turbidity meter (141), and the turbidity data of the produced water is detected by the second turbidity meter (142). The turbidity data of the raw water and the turbidity data of the produced water are standardized. The standardized turbidity data of raw water and product water are input into the trained DQN model to obtain the optimized ultraviolet wavelength λ and ultrasonic frequency f. The ultraviolet generator (5) and the ultrasonic generator body (13) are controlled according to the optimized ultraviolet wavelength λ and ultrasonic frequency f.

2. The advanced oxidation-co-filtration method according to claim 1, characterized in that, A first booster pump (31) is installed on the first pipeline.

3. The advanced oxidation-co-filtration method according to claim 1, characterized in that, A second booster pump (32) is installed on the second pipeline.

4. The advanced oxidation-co-filtration method according to claim 1, characterized in that, A third booster pump (33) is installed on the third pipeline.

5. The advanced oxidation-co-filtration method according to claim 1, characterized in that, The outlet of the product water tank (11) is connected to the backwash water inlet of the US activation filter (8) via the fifth booster pump (35).

6. The advanced oxidation-co-filtration method according to claim 1, characterized in that, It also includes a backwash fan (15), the outlet of which is connected to the backwash air inlet of the US activation filter (8).

7. The advanced oxidation-co-filtration method according to claim 1, characterized in that, A stirrer (2) is installed inside the solution tank (1).

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