Sewage treatment mixing reactor and control method, device and equipment thereof

Abstract

According to the sewage treatment mixing reactor and the control method, device and equipment thereof provided by the invention, the reactor promotes sufficient cross flow of sewage and chemicals in the mixing tank through multiple groups of shearing blades which are arranged in a staggered manner, and achieves a turbulent flow state, so that the contact efficiency of strong oxidizing substances and the sewage is improved; therefore, a static efficient mixing mode is adopted, the uniformity of the reaction liquid is improved, a dynamic mechanical stirring device is not needed, equipment abrasion is reduced, extra power consumption is not needed, and energy consumption is saved. Besides, according to the chemical oxygen demand of the sewage inlet, the content of to-be-degraded organic matters and the types of the added agents, the adding amount of the added agents can be automatically adjusted, the agents and the wastewater are in an efficient mixing state, the treatment efficiency is improved, the device can adapt to different water qualities and various agents, operation is easy, cost is saved, and the device is environmentally friendly and high in practical value.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a wastewater treatment mixed reactor and its control method, apparatus and equipment. Background Technology

[0002] Strong oxidizing agents such as ozone, hydrogen peroxide, and hypochlorous acid are widely used in wastewater treatment due to their high oxidation efficiency. Their core function is to achieve multiple effects, including pollutant degradation, decolorization, deodorization, and disinfection, by disrupting the chemical structure of organic matter. The mixing efficiency of these strong oxidizing agents with wastewater directly determines the treatment efficiency and reagent utilization rate.

[0003] In related technologies, dynamic paddle mechanical agitation of strong oxidizing agents and wastewater is used to improve the mixing efficiency of strong oxidizing substances and wastewater. However, paddle agitation requires additional power, resulting in relatively high energy consumption and increased equipment and maintenance costs. Summary of the Invention

[0004] This application provides a wastewater treatment mixing reactor and its control method, apparatus and equipment to solve the technical problem in the related art that the mixing efficiency of strong oxidizing agents and wastewater is improved by dynamic paddle mechanical stirring, but the paddle stirring requires additional power to drive, the energy consumption is relatively high, and the equipment and maintenance costs are increased.

[0005] The first aspect of this application provides a wastewater treatment mixing reactor, comprising:

[0006] A mixing tank having a mixing chamber, an inlet, and an outlet, wherein the inlet and the outlet are both connected to the mixing chamber;

[0007] Multiple sets of shear blades are disposed on the inner wall of the mixing chamber and spaced apart along the axial direction of the mixing chamber. Multiple shear blades are provided in the same set and spaced apart along the circumference of the mixing chamber. The shear blades of adjacent sets are staggered along the circumference of the mixing chamber.

[0008] In some embodiments, one axial end of the mixing tank is a first end, and the inlet is adjacent to the first end;

[0009] The shearing blade is inclined toward the first end from one end near the inner wall of the mixing chamber to the end near the middle of the mixing chamber.

[0010] In some embodiments, the angle between the tilting direction of the shear blade and the radial direction of the mixing chamber is α, satisfying 20°≤α≤35°.

[0011] In some embodiments, the axis of the mixing chamber is parallel to the vertical direction, and the first end is located at the bottom of the mixing tank; and / or,

[0012] The inlet is equipped with a filter screen, and the outlet is located below the inlet, with the outlet and inlet located on opposite sides of the axis of the mixing tank; and / or,

[0013] The inlet is equipped with an inlet valve, and the outlet is equipped with an outlet valve.

[0014] In some embodiments, at least one set of shear blades is provided between the inlet and the outlet.

[0015] In some embodiments, the shear blade is provided with a plurality of flow channels, each of which extends axially along the mixing chamber.

[0016] In some embodiments, the wastewater treatment mixing reactor further includes a temperature regulating coil, which is arranged around the periphery of the mixing tank for regulating the temperature inside the mixing chamber.

[0017] In some embodiments, the wastewater treatment mixing reactor further includes a chemical oxygen demand (COD) monitor, an influent flow controller, and an influent pressure regulator, all of which are located at the inlet; and / or,

[0018] The mixing tank also has a reagent inlet communicating with the mixing chamber, the reagent inlet being equipped with a reagent pressure regulator, a reagent dosage controller, and a reagent flow controller; and / or,

[0019] The mixing chamber is equipped with an acid-base sensor, a temperature sensor, and a pressure sensor.

[0020] In some embodiments, at least one set of shearing blades is provided between the drug port and the inlet.

[0021] In some embodiments, the mixing tank further has a pressure relief port communicating with the mixing chamber, the pressure relief port being located at the top of the mixing tank and equipped with a pressure relief valve; and / or,

[0022] The mixing tank also has a sludge inlet communicating with the mixing chamber. The sludge inlet is located at the bottom of the mixing tank and is equipped with a sludge valve. The sludge inlet is connected to a drain pipe, which is connected to an emergency sludge storage tank; and / or,

[0023] The mixing tank also has a sampling port connected to the mixing chamber, and the sampling port is equipped with a sampling valve.

[0024] A second aspect of this application provides a method for controlling the feeding of a wastewater treatment mixing reactor, applied to the wastewater treatment mixing reactor described in any one of the first aspects, wherein the mixing tank of the wastewater treatment mixing reactor has a reagent inlet, and the control method includes:

[0025] Obtain the chemical oxygen demand, the content of organic matter to be degraded, and the types of reagents added at the wastewater inlet of the mixing tank;

[0026] The target dosage of the reagent is determined based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of reagent.

[0027] Adjust the dosage of the drug at the drug inlet according to the target dosage.

[0028] In some embodiments, determining the target dosage of the agent based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of agent includes:

[0029] Determine the dosage correction factor based on the content of the organic matter to be degraded;

[0030] Determine the drug type correction factor based on the drug type;

[0031] The target dosage of the agent is determined based on the dosage correction factor, the agent type correction factor, the preset minimum dosage multiple, and the chemical oxygen demand.

[0032] In some embodiments, determining the target dosage of a reagent based on the dosage correction factor, the reagent type correction factor, a preset minimum dosage multiple, and the chemical oxygen demand includes:

[0033]

[0034] Wherein, M2 is the target dosage, M1 is the chemical oxygen demand, K1 is the dosage correction coefficient, K2 is the dosage type correction coefficient, N is the minimum dosage multiple, and N is greater than or equal to 3.

[0035] In some embodiments, determining the dosage correction factor based on the content of the organic matter to be degraded includes:

[0036] If the mass percentage of olefins in the organic matter to be degraded is greater than 90%, then the dosage correction factor is determined to be 0-1.

[0037] If the content of the organic matter to be degraded contains more than 80% aromatic compounds by mass, then the correction factor for the dosage is determined to be 1-2.

[0038] If the mass percentage of organic amines in the organic matter to be degraded is greater than 40%, then the dosage correction factor is determined to be 2-3.

[0039] And / or, determining the drug type correction factor based on the drug type includes:

[0040] If the drug is hypochlorous acid, then the correction factor for the drug type is determined to be 0-1.5;

[0041] If the agent is ozone, then the correction factor for the agent type is determined to be 1.5-2.5;

[0042] If the agent is hydrogen peroxide, then the correction factor for the agent type is determined to be 2-3.

[0043] In some embodiments, the control method further includes:

[0044] Obtain the inlet pressure of the wastewater inlet of the mixing tank;

[0045] Determine the dosing pressure adjustment coefficient based on the type of drug;

[0046] The target feed pressure of the reagent inlet is determined based on the dosing pressure adjustment coefficient and the inlet water pressure using the following formula:

[0047]

[0048] Wherein, P1 is the inlet water pressure, P2 is the target agent feed pressure, and K3 is the dosing pressure adjustment coefficient, with a value range of 1-1.6.

[0049] In some embodiments, determining the dosing pressure adjustment coefficient according to the type of drug includes:

[0050] If the agent is ozone, then the dosing pressure adjustment coefficient is determined to be 1-1.2;

[0051] If the agent is hydrogen peroxide, then the dosing pressure adjustment coefficient is determined to be 1.2-1.4.

[0052] If the agent is hypochlorous acid, then the dosing pressure adjustment coefficient is determined to be 1.4-1.6;

[0053] In some embodiments, the control method further includes:

[0054] Obtain the influent flow rate at the wastewater inlet of the mixing tank and the effective reactant concentration at the reagent inlet;

[0055] The target reagent feed flow rate at the reagent inlet is determined based on the inlet flow rate, the effective reactant concentration, the inlet pressure, and the dosing pressure adjustment coefficient.

[0056] Adjust the feed flow rate of the drug inlet according to the target drug feed flow rate.

[0057] In some embodiments, the formula for calculating the target agent feed flow rate is:

[0058]

[0059] Wherein, Q1 is the influent flow rate, Q2 is the target agent feed flow rate, M2 is the target agent dosage, P2 is the target agent feed pressure, and C... 有效成分 The effective reactant concentration is given, and K4 is the reagent flow rate adjustment coefficient. K4 is positively correlated with P2.

[0060] In some embodiments, the control method further includes:

[0061] Obtain the internal temperature, pH, and pressure of the mixing tank;

[0062] By controlling the heating coil, the valves at the sewage inlet, the chemical outlet, and the pressure relief valve, the temperature inside the tank is kept within a preset temperature range, the pH inside the tank is kept within a preset pH range, and the pressure inside the tank is kept within a preset pressure range.

[0063] A third aspect of this application also provides a control device for a wastewater treatment mixing reactor, the control device comprising:

[0064] The acquisition module is used to acquire the chemical oxygen demand, the content of organic matter to be degraded, and the types of added reagents at the wastewater inlet of the mixing tank.

[0065] The determination module is used to determine the target dosage of the agent based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of agent.

[0066] The control module is used to adjust the dosage of the drug at the drug inlet according to the target dosage.

[0067] A fourth aspect of this application also provides a control device, including: a memory and a processor;

[0068] The memory stores computer-executed instructions;

[0069] The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any of the second aspects.

[0070] The fifth aspect of this application also provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, are used to implement the method as described in any of the second aspects.

[0071] In the wastewater treatment mixing reactor provided in this application, after the wastewater and strong oxidizing agent enter the mixing tank, they flow through multiple sets of shear blades. Because these shear blades are arranged in a staggered pattern, the wastewater and strong oxidizing agent continuously change direction during flow. Simultaneously, the shear blades apply a reverse shear force to the flowing liquid, promoting thorough cross-flow of the wastewater and agent within the mixing tank and achieving a turbulent state. This enhances the contact efficiency between the strong oxidizing agent and the wastewater, reduces localized agent accumulation or incomplete reactions, and thus improves the mixing uniformity of the wastewater and agent, thereby increasing wastewater purification efficiency. In this way, this solution employs a static, high-efficiency mixing method that improves the uniformity of the reaction liquid without requiring dynamic mechanical stirring devices, reducing equipment wear and eliminating the need for additional power consumption, saving energy and lowering equipment and maintenance costs. Attached Figure Description

[0072] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0073] Figure 1 A cross-sectional view of a wastewater treatment mixing reactor provided in an embodiment of this application;

[0074] Figure 2 for Figure 1 A schematic diagram of multiple shear blades in the middle;

[0075] Figure 3 for Figure 1 A schematic diagram of a mixing tank and a shear blade;

[0076] Figure 4 This application provides a schematic diagram of a control method for a wastewater treatment mixed reactor.

[0077] Figure label:

[0078] 1. Mixing tank; 1a. Mixing chamber; 1b. Inlet; 1c. Outlet; 1d. Chemical inlet; 1e. Pressure relief port; 1f. Sludge inlet; 1g. Sampling port; 11. First end; 12. Inlet valve; 13. Outlet valve; 14. Chemical valve; 15. Pressure relief valve; 16. Sludge valve; 17. Sampling valve; 18. Pressure gauge;

[0079] 2. Shear blades; 2a. Flow guide channel;

[0080] 3. Temperature regulating coil;

[0081] 4. Chemical oxygen demand monitor; 41. Inlet flow controller; 42. Inlet pressure regulator;

[0082] 5. Chemical pressure regulator; 51. Chemical dosage controller; 52. Chemical flow controller;

[0083] 6. pH sensor; 61. Temperature sensor; 62. Pressure sensor;

[0084] 7. Bracket.

[0085] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0086] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0087] Strong oxidizing agents such as ozone, hydrogen peroxide, and hypochlorous acid are widely used in wastewater treatment due to their high oxidation efficiency. Their core function lies in breaking down the chemical structure of organic matter to achieve multiple effects, including pollutant degradation, decolorization, deodorization, and disinfection. Their mechanisms of action can be divided into direct oxidation and indirect oxidation. Direct oxidation achieves targeted degradation by attacking unsaturated bonds and reactive groups such as hydroxyl groups in pollutant molecules; indirect oxidation, on the other hand, utilizes the generation of highly reactive intermediates such as hydroxyl radicals to achieve non-selective removal of pollutants. These characteristics give them significant technological advantages in the treatment of high-concentration organic wastewater, the purification of industrial toxic wastewater, and emergency water pollution control.

[0088] However, the mixing efficiency of strong oxidizing substances with wastewater directly determines the treatment efficiency and reagent utilization rate.

[0089] In related technologies, dynamic paddle mechanical agitation of strong oxidizing agents and wastewater is used to improve the mixing efficiency of strong oxidizing substances and wastewater. However, paddle agitation requires additional power, resulting in relatively high energy consumption and increased equipment and maintenance costs.

[0090] Therefore, this application provides a wastewater treatment mixing reactor, which uses multiple sets of shear blades arranged in a staggered manner along the axial direction of the mixing tank to promote the full cross-flow of the solution in the tank to achieve a turbulent state, thereby realizing static and efficient mixing. While improving the uniformity of the reaction liquid, it eliminates the need for dynamic mechanical stirring devices, reduces equipment wear, eliminates the need for additional power consumption, saves energy, and reduces equipment and maintenance costs.

[0091] Please see Figure 1 and Figure 2 The wastewater treatment mixing reactor provided in this application includes a mixing tank 1 and multiple sets of shear blades 2. The mixing tank 1 has a mixing chamber 1a, an inlet 1b and an outlet 1c, and the inlet 1b and the outlet 1c are both connected to the mixing chamber 1a. Multiple sets of shear blades 2 are provided on the inner wall of the mixing chamber 1a and are spaced apart along the axial direction of the mixing chamber 1a. There are multiple shear blades 2 in the same set, and the multiple shear blades 2 in the same set are spaced apart along the circumference of the mixing chamber 1a. The shear blades 2 of adjacent sets are staggered along the circumference of the mixing chamber 1a.

[0092] In this application, after the wastewater and strong oxidizing agent enter the mixing tank 1, they flow through multiple sets of shear blades 2. Because the multiple sets of shear blades 2 are arranged in a staggered pattern, the wastewater and strong oxidizing agent continuously change direction during flow. Simultaneously, the shear blades 2 apply a reverse shear force to the flowing liquid, promoting thorough cross-flow of the wastewater and agent within the mixing tank 1 and achieving a turbulent state. This enhances the contact efficiency between the strong oxidizing substance and the wastewater, reduces localized agent accumulation or incomplete reactions, and thus improves the mixing uniformity of the wastewater and agent, thereby increasing wastewater purification efficiency. Thus, this solution employs a static, high-efficiency mixing method that improves the uniformity of the reaction liquid without requiring dynamic mechanical stirring devices, reducing equipment wear and eliminating the need for additional power consumption, saving energy, and lowering equipment and maintenance costs.

[0093] It should be noted that wastewater and chemicals can be simultaneously fed into mixing tank 1 through inlet 1b, or a separate chemical inlet 1d can be provided on mixing tank 1. Specifically, in this design, mixing tank 1 is simultaneously provided with inlet 1b for introducing wastewater into mixing chamber 1a and chemical inlet 1d for introducing chemicals into mixing chamber 1a. Furthermore, the number of shear blades 2 is set to two or more sets; specifically, in this design, a total of eight sets of shear blades 2 are provided.

[0094] In one embodiment, the mixing tank 1 has a first end 11 in the axial direction, and the inlet 1b is adjacent to the first end 11; the shear blade 2 is inclined towards the first end 11 from one end near the inner wall of the mixing chamber 1a to one end near the middle of the mixing chamber 1a.

[0095] In this embodiment, after the wastewater enters the mixing chamber 1a from the first end 11 of the mixing tank 1, due to the acute guide angle between the shear blade 2 and the first end 11 of the mixing tank 1, the wastewater directly impacts the inclined end face of the shear blade 2 near the first end 11. The shear blade 2 decomposes the kinetic energy of the wastewater into a circumferential rotational force. Simultaneously, under the action of the inclined surface, the wastewater directly receives a reverse driving force away from the first end 11, causing the sediment (such as suspended particles and undissolved chemicals) at the first end 11 to move in the opposite direction with the water flow, eliminating the dead zone at the first end 11, thereby effectively cross-flowing the wastewater and forming turbulence. It should be understood that since the wastewater inflow is greater than the chemical inflow, when the shear blade 2 effectively disturbs the wastewater in the mixing tank 1, it can effectively promote the synchronous flow of the wastewater and the chemical, improving the mixing efficiency of the wastewater and the chemical.

[0096] Furthermore, it should be noted that when the axis of the mixing chamber 1a is parallel to the vertical direction and the first end 11 is located at the bottom of the mixing tank 1, since the shear blades 2 are arranged circumferentially along the inner wall of the mixing tank 1, each shear blade 2 is a local guiding unit. When the sewage flows through the shear blades 2, it is forced to be given a circumferential velocity, forming an annular vortex that rotates along the tank wall. The centrifugal force generated by the vortex causes the fluid in the tank to form a flow field with low pressure at the center and high pressure at the edge, which pushes the fluid at the edge to converge towards the center. It can be superimposed with the upward flow of the solution as a whole to form a spiral upward flow, realizing three-dimensional mixing in the radial (inner and outer) + axial (up and down) directions, while eliminating the dead zone at the bottom of the tank and improving the mixing uniformity.

[0097] It should be understood that when the radial angle between the shear blade 2 and the mixing tank 1 is small, the fluid mainly flows in a swirling motion, with weak upward force, making it difficult to move the sediment at the bottom of the tank and easily forming a dead zone at the end; at the same time, the centrifugal force of the swirling motion is too strong, and the fluid tends to flow along the wall, resulting in insufficient mixing in the central area. On the other hand, when the radial angle between the shear blade 2 and the mixing tank 1 is large, the fluid mainly rises in a straight line, with insufficient swirling intensity, making it difficult to eliminate the radial concentration difference, and easily leading to problems such as insufficient mixing at the far end and localized unevenness in the middle layer.

[0098] Therefore, in one embodiment, please refer to Figure 2 and Figure 3 The angle between the tilt direction of the shear blade 2 and the radial direction of the mixing chamber 1a is α, which satisfies 20°≤α≤35°.

[0099] In this embodiment, the radial angle between the shear blade 2 and the mixing tank 1 is limited to between 20° and 35°. This allows the centrifugal force generated by the swirling flow to push the edge fluid towards the center, while the upward flow carries the bottom fluid upward. The two superimposed flow form a spiral upward flow, achieving three-dimensional full-coverage mixing in both radial and axial directions, thus reducing the proportion of the mixing dead zone volume. It should be noted that in the radial angle between the shear blade 2 and the mixing tank 1, radial refers to the diameter direction passing through the corresponding shear blade 2. Preferably, in one embodiment, the angle α between the tilt direction of the shear blade 2 and the radial direction of the mixing chamber 1a is 27°.

[0100] In one embodiment, the inlet 1b is provided with a filter screen, the outlet 1c is located below the inlet 1b, and the outlet 1c and the inlet 1b are respectively located on both sides of the axis of the mixing tank 1; the inlet 1b is provided with a liquid inlet valve 12, and the outlet 1c is provided with a liquid outlet valve 13.

[0101] In this embodiment, after the filter screen intercepts impurities, the wastewater entering the tank is more uniform in quality, and the fluid flow is unimpeded. The spiral upward flow guided by the shear blades 2 is more stable. Meanwhile, the outlet 1c is located below the inlet 1b; for example, the inlet 1b is located on the side of the tank, and the outlet 1c is located at the center of the bottom of the tank or lower. Since the outlet 1c is located at the lowest point at the bottom, gravity can be used to achieve complete drainage, eliminating the need for an additional vent valve. Furthermore, after water enters through the inlet 1b on the bottom side, it is guided by the shear blades 2 to form a spiral upward flow. The fluid rises from the bottom to the top of the tank and then descends along the tank wall to the bottom outlet 1c, forming an internal circulation flow field. The residence time is longer than in a design where the outlet 1c is located at the top of the tank, thus extending the reaction time. Additionally, it creates a continuous flow of fluid at the bottom. The water flow at the inlet 1b impacts the bottom of the tank, the shear blades 2 drive the fluid upward, and the outlet 1c continuously discharges the bottom fluid, ensuring there is no stagnant area at the bottom of the tank. Impurities are discharged with the water flow, preventing sedimentation.

[0102] Furthermore, it should be understood that control valves are respectively installed at inlet 1b and outlet 1c to flexibly control the liquid inflow and outflow to meet actual needs. Specifically, in one embodiment, both inlet valve 12 and outlet valve 13 are solenoid valves. In this design, outlet 1c is located to the lower right of inlet 1b.

[0103] In one embodiment, at least one set of shear blades 2 is provided between the inlet 1b and the outlet 1c.

[0104] In this embodiment, shear blades 2 are also provided between inlet 1b and outlet 1c to focus on local enhancement of the inlet and outlet flow channels and eliminate local dead zones between the inlet and outlet. Specifically, in this scheme, the number of shear blades 2 on the upper side of inlet 1b is greater than the number of shear blades 2 on the lower side. After sewage flows into inlet 1b, the initial kinetic energy is concentrated in the upper region, at which time the water flow velocity is fast and the impact force is strong. Arranging more sets of shear blades 2 on the upper side can quickly disperse the concentrated water flow with high kinetic energy and avoid the water flow directly rushing to outlet 1c to form a short-circuit flow; when the water flows downward to the lower side, the kinetic energy gradually decreases and the flow velocity slows down. After the initial cross-flow by the shearing of the upper blades, the solution is relatively uniformly mixed. Only a small number of shear blades 2 are needed for secondary mixing to eliminate local dead zones before discharge from the tank. There is no need for too many sets to cause energy waste, and the solution is in a turbulent and mixed state before being discharged.

[0105] In one embodiment, the shear blade 2 is provided with a plurality of flow channels 2a, each flow channel 2a extending along the axial direction of the mixing chamber 1a.

[0106] In this embodiment, guide channels 2a are provided at different positions on the shear blade 2 to reduce unnecessary residence time and optimize the fluid channel, thereby minimizing energy consumption during mixing and achieving rapid homogenization of the solution. Specifically, through the design of the guide channels 2a on the surface of the shear blade 2, the flow path of the liquid in the mixing chamber 1a is further optimized, reducing the liquid stagnation area and shortening the mixing time. At the same time, the guide channels 2a reduce flow resistance, thereby further reducing energy loss and improving mixing efficiency, which is particularly suitable for the mixing requirements of high-viscosity wastewater. It should be noted that, in one embodiment, the two sides of the shear blade 2 on the axial direction of the mixing tank 1 are conical surfaces to guide the swirling flow.

[0107] It should be noted that, in one embodiment, the opening ratio of the flow guiding channel 2a is less than 30% of the surface area of ​​the shear blade 2. The flow guiding channel 2a can be designed as circular, rectangular, or trapezoidal, and its distribution density can be adjusted according to the characteristics of the wastewater. An opening ratio of less than 30% ensures that the shear blade 2 still has sufficient structural strength, while reducing fluid resistance and improving mixing efficiency. For example, when treating high-viscosity wastewater, the channel can reduce the adhesion of liquid to the blade surface, avoiding uneven mixing of the agent and wastewater; when treating low-viscosity wastewater, the channel can shorten the mixing path and increase turbulence intensity.

[0108] In one embodiment, the wastewater treatment mixing reactor further includes a temperature regulating coil 3, which is arranged around the periphery of the mixing tank 1 to regulate the temperature inside the mixing chamber 1a.

[0109] In this embodiment, the temperature-regulating coil 3 controls the temperature within the mixing chamber 1a by heating or cooling the inner wall of the mixing tank 1, ensuring the reaction proceeds under suitable temperature conditions, thereby improving the stability of the reagent and the reaction efficiency. This design adapts to temperature requirements under different seasons or water quality conditions, optimizing the thermodynamic conditions of the reaction. It should be noted that the temperature-regulating coil 3 can exchange heat with the mixing chamber 1a through the heat exchange fluid flowing within it, or the temperature can be adjusted by electric heating; this is not limited to this method.

[0110] In one embodiment, the wastewater treatment mixing reactor further includes a chemical oxygen demand (COD) monitor 4, an influent flow controller 41, and an influent pressure regulator 42, all of which are located at inlet 1b.

[0111] In this embodiment, the chemical oxygen demand monitor 4 is used to detect the chemical oxygen demand (COD) in the wastewater fed into the mixing chamber 1a, and can be a sensor based on colorimetric method or electrochemical principle; the inlet flow controller 41 is used to adjust the wastewater inlet flow rate, and can be an electromagnetic flow meter or a turbine flow meter; the inlet pressure regulator 42 is used to adjust the wastewater inlet pressure, and can be a pressure regulating valve or an electric pressure controller.

[0112] Thus, through the chemical oxygen demand monitor 4, the influent flow controller 41 and the influent pressure regulator 42 at inlet 1b, the COD concentration, flow rate and pressure of the wastewater influent are monitored and adjusted in real time, thereby achieving precise matching of wastewater and reagents, improving the stability and efficiency of the mixing reaction, reducing reagent waste and lowering treatment costs.

[0113] In one embodiment, the mixing tank 1 also has a drug port 1d communicating with the mixing chamber 1a, and the drug port 1d is equipped with a drug pressure regulator 5, a drug dosage controller 51 and a drug flow controller 52.

[0114] In this embodiment, the dosing pressure, dosage, and flow rate of the reagent are monitored and adjusted in real time via the reagent pressure regulator 5, reagent dosage controller 51, and reagent flow controller 52 at reagent inlet 1d. This achieves precise matching between the reagent and the wastewater, improves the stability and efficiency of the mixing reaction, reduces reagent waste, and lowers treatment costs. A reagent valve 14 is also provided at reagent inlet 1d.

[0115] It should be understood that the chemical pressure regulator 5 can be a pressure regulating valve or an electric pressure controller; the chemical dosage controller 51 can be a chemical pump and equipped with multiple chemical tanks (such as acids, alkalis, strong oxidizing substances, etc.), and corresponding filters and control valves are provided. The chemical pump can pump in chemicals simultaneously or in sequence; the chemical flow controller 52 uses an electromagnetic flow meter or a turbine flow meter.

[0116] In one embodiment, the mixing chamber 1a is provided with an acid-base sensor 6, a temperature sensor 61 and a pressure sensor 62.

[0117] In this embodiment, the pH sensor 6 is used to monitor the pH value within the mixing chamber 1a, and a glass electrode pH meter can be used; the temperature sensor 61 is used to monitor the temperature within the mixing chamber 1a, and a thermocouple or infrared temperature sensor 61 can be used; the pressure sensor 62 is used to monitor the pressure within the mixing chamber 1a, and a piezoelectric pressure sensor 62 can be used. In this embodiment, the temperature, pH value, and pressure of the mixing reaction are monitored in real time through the temperature sensor 61, pH sensor, and pressure sensor 62 within the mixing chamber 1a, thereby achieving dynamic optimization of the reaction conditions, which also improves the stability and efficiency of the mixing reaction, reduces reagent waste, and lowers processing costs.

[0118] In one embodiment, at least one set of shear blades 2 is provided between the agent inlet 1d and the inlet 1b.

[0119] In this embodiment, compared to related technologies where the agent inlet 1d is directly aligned with the outlet 1c, or where wastewater flows unevenly within the tank, some agents may be discharged without fully reacting with the wastewater, causing a short circuit. In this application, the agent is dispersed beforehand during the initial contact stage between the wastewater and the agent. Shear action breaks up agent agglomeration and enhances initial mixing, addressing the problems of uneven mixing, agent waste, and low reaction efficiency that arise when wastewater enters the tank first and then the agent is added. Furthermore, after the wastewater flows in from the inlet 1b, it is first dispersed into fine streams by the shear blades 2, forming a turbulent field. After the agent is added, it directly enters the core of the turbulent flow, where it is torn into micron-sized droplets or particles by the high-speed shearing of the wastewater flow, preventing agglomeration and improving the mixing effect. Specifically, the number of shear blades 2 between the agent inlet 1d and the inlet 1b is greater than the number of shear blades 2 between the inlet 1b and the outlet 1c.

[0120] In one embodiment, the mixing tank 1 also has a pressure relief port 1e communicating with the mixing chamber 1a. The pressure relief port 1e is located at the top of the mixing tank 1 and is equipped with a pressure relief valve 15.

[0121] In this embodiment, the additional pressure caused by physical and chemical reactions can be released through the pressure relief port 1e and the pressure relief valve 15, balancing the internal pressure of the mixing tank 1 and ensuring that the tank is at a suitable pressure, thereby improving reaction efficiency. It should be noted that in this solution, a pressure gauge 18 is also provided at the pressure relief port 1e.

[0122] In one embodiment, the mixing tank 1 also has a sludge port 1f that communicates with the mixing chamber 1a. The sludge port 1f is located at the bottom of the mixing tank 1 and is provided with a sludge valve 16. The sludge port 1f is connected to a drain pipe, which is connected to a sludge temporary storage emergency pool.

[0123] In this embodiment, a sludge outlet 1f is located on the lower outer surface of the tank body for periodically discharging impurities from the mixing chamber 1a, preventing sludge accumulation within the mixing chamber 1a. Furthermore, a sewage pump is installed on the drain pipe in this design. It should be noted that the mixing tank 1 also has a sampling port 1g connected to the mixing chamber 1a. The sampling port 1g is equipped with a sampling valve 17. Under suitable reaction conditions, sampling experiments can be conducted through the sampling port 1g to determine the degree of reaction within the tank. Periodic experiments can be performed to ensure the reaction effect and adjust the reagent state in a timely manner. The bottom of the mixing tank 1 is supported by a bracket 7. Specifically, the sampling port 1g is also located on the lower right side of the inlet 1b and above the outlet 1c. The sludge outlet 1f is located on the same side as the inlet 1b and below it.

[0124] To control the reaction rate and effect within the mixing tank, the dosage, pressure, and flow rate of the reagents can be automatically adjusted. This achieves high-efficiency COD removal at low cost and is adaptable to different water qualities and various strong oxidizing agents. This automated control method is easy to operate, cost-effective, environmentally friendly, and highly practical.

[0125] The automated control method for wastewater treatment mixing reactors requires that the mixing tank of the wastewater treatment mixing reactor has a chemical inlet, which is different from the wastewater inlet.

[0126] It should be noted that the device controlling the dosage, pressure, and flow rate of the pesticide can be an integrated electronic device with processing capabilities; or it can be different electronic devices, such as a dosage controller, flow controller, and pressure regulator, which can control the dosage, flow rate, and pressure respectively.

[0127] The following section will focus on integrated electronic devices with processing capabilities as the main execution entity.

[0128] Figure 4 A schematic diagram of a control method for a wastewater treatment mixed reactor provided in this application is shown below. Figure 4 As shown, the control methods include:

[0129] S101. Obtain the chemical oxygen demand, the content of organic matter to be degraded, and the types of reagents added at the wastewater inlet of the mixing tank.

[0130] In this step, for chemical oxygen demand, the integrated equipment obtains the chemical oxygen demand (COD) detected by the COD monitor at the wastewater inlet of the mixing tank.

[0131] The content of organic matter to be degraded can be determined by testing the wastewater in advance and manually inputting the information into the integrated equipment. Alternatively, the content of organic matter to be degraded in the wastewater can be detected by the integrated detector through short sampling at fixed intervals.

[0132] The types of reagents to be added can be manually entered into the integrated device for the current reaction.

[0133] S102. Determine the target dosage of the agent based on the chemical oxygen demand, the content of organic matter to be degraded, and the type of agent.

[0134] In this step, the amount of organic matter to be degraded in the wastewater can affect the dosage of the reagent. Different chemical oxygen demand (COD) levels in the wastewater also affect the dosage, as does the reagent's removal efficiency. It should be noted that the "organic matter to be degraded" content encompasses various concentrations of different organic matter.

[0135] In one implementation, the correlation between chemical oxygen demand (COD), the content of organic matter to be degraded, and the type of reagent can be established in advance based on pre-historical operating data or experimental calibration results.

[0136] In another implementation, a predictive model (such as a backpropagation neural network or a fuzzy neural controller) is trained using historical operational data. The inputs are COD, the content of organic matter to be degraded, and the type of reagent; the output is the target reagent dosage. During actual operation, the reagent dosage is controlled using the predictive model.

[0137] S103. Adjust the dosage of the agent at the agent inlet according to the target dosage.

[0138] In this step, the amount of pesticide flowing into the pesticide inlet is controlled by an integrated device according to the target dosage.

[0139] This solution implements a dynamic dosing strategy for chemicals based on monitoring data from the wastewater inlet. It can automatically adjust reaction conditions according to fluctuations in wastewater quality, ensuring the stability of treatment effects. It can precisely control the amount of chemicals added, reduce waste, and further save operating costs.

[0140] The specific implementation of step S102 is described below. One implementation includes the following steps:

[0141] S1021. Determine the dosage correction coefficient based on the content of organic matter to be degraded.

[0142] In this step, common organic compounds to be degraded in wastewater include olefins, aromatic compounds, and organic amines. Olefins are easily degraded, while aromatic compounds and organic amines are relatively difficult to degrade. Therefore, the dosage of the reagent required varies depending on the content of the organic compounds to be degraded in the wastewater, and a dosage correction factor needs to be determined.

[0143] You can pre-set the corresponding dosage correction coefficient for the organic matter to be degraded in the wastewater. After determining the organic matter to be degraded, you can find the corresponding dosage correction coefficient.

[0144] In some embodiments, if the mass percentage of olefins in the organic matter to be degraded is greater than 90%, then the dosage correction factor is determined to be 0-1. This value is predetermined by the developers and written into the integrated device, and the value can be 0.1, 0.4, 0.8, 0.9, 1, or any range between the above.

[0145] In some embodiments, if the content of aromatic substances in the organic matter to be degraded is greater than 80% by mass, the dosage correction factor is determined to be 1-2. This value is predetermined by the developers and written into the integrated device. The value can be 1.1, 1.4, 1.7, 1.9, 2, or any range between the above two.

[0146] In some embodiments, if the mass percentage of organic amines in the organic matter to be degraded is greater than 40%, then the dosage correction factor is determined to be 2-3. This value is predetermined by the developers and written into the integrated device, and the value can be 2.1, 2.4, 2.7, 2.9, 3, or any range between the above.

[0147] S1022. Determine the drug type correction factor based on the drug type.

[0148] In this step, different reagents have varying removal efficiencies for organic matter, therefore a correction factor needs to be determined based on the reagent type. The mapping relationship between various reagent types and their correction factors is pre-stored in the integrated device and can be directly queried during use.

[0149] The mapping relationship between various types of drugs used and the correction coefficients for drug types can be presented in tabular or other forms, for example:

[0150] If the drug is hypochlorous acid, then the correction factor for the drug type is determined to be 0-1.5;

[0151] If the reagent type is ozone, then the reagent type correction factor is determined to be 1.5-2.5;

[0152] If the agent is hydrogen peroxide, then the agent type correction factor is determined to be 2-3.

[0153] S1023. Determine the target dosage of the agent based on the dosage correction coefficient, the agent type correction coefficient, the preset minimum dosage multiple, and the chemical oxygen demand.

[0154] In one specific implementation, the target dosage of the agent is calculated using the following formula.

[0155]

[0156] Where M2 is the target dosage, M1 is the chemical oxygen demand, K1 is the dosage correction factor, K2 is the type of agent correction factor, N is the minimum dosage multiple, and N is greater than or equal to 3.

[0157] N represents the minimum dosage multiple of the reagent, which is the lower limit of the formula; 10000 represents the critical value for the wastewater COD to enter the high concentration range, i.e., 10000 mg / L. Under this formula, when the COD content is low to medium (0-10000 mg / L), the reagent dosage is approximately (N+K1+K2) to (N+1+K1+K2) times M1; when the COD content is high (10000-20000 mg / L), the reagent dosage is approximately (N+1+K1+K2) to (N+2+K1+K2) times M1.

[0158] When recalcitrant organic matter is present in small amounts, K1 should be low to reduce reagent dosage and save costs. When recalcitrant organic matter is present in large amounts, K1 should be high to increase reagent dosage and ensure treatment effectiveness. When strong oxidizing agents have high oxidation efficiency, K2 should be low to reduce reagent dosage and save costs. When strong oxidizing agents have low oxidation efficiency, K2 should be high to increase reagent dosage and ensure treatment effectiveness.

[0159] By combining parameters such as correction factors, minimum dosage multiple, and COD, the target dosage of the reagent is finally determined. This process utilizes a dynamic control algorithm and is continuously optimized and adjusted based on real-time data feedback.

[0160] In addition to controlling the dosage of the agent, the pressure at the agent inlet can also be automatically controlled to ensure that the agent is mixed evenly in the mixing tank while ensuring the treatment effect.

[0161] In addition to the above method embodiments, the automatic adjustment of the pressure at the drug inlet also includes the following steps:

[0162] S201. Obtain the inlet water pressure of the wastewater inlet of the mixing tank.

[0163] The integrated equipment monitors the inlet pressure of the sewage tank in real time through a pressure sensor installed at the sewage inlet.

[0164] S202. Determine the dosing pressure adjustment coefficient according to the type of drug.

[0165] Different reagents have varying flowability and reaction rates, requiring the pressure adjustment coefficient to be determined based on the reagent type. Reagents with higher viscosity require higher feed pressure to ensure effective mixing. It should be noted that the equipment in the wastewater treatment mixing reactor is fixed; that is, the pipe diameter of the reagent inlet, nozzle structure, pump type, etc., are fixed and do not affect the automated control of the reagents.

[0166] In one specific implementation method, among commonly used reagents (ozone, hydrogen peroxide, hypochlorous acid), the ozone dosing pressure adjustment coefficient is set to 1-1.2; the hydrogen peroxide dosing pressure adjustment coefficient is set to 1.2-1.4; and the hypochlorous acid dosing pressure adjustment coefficient is set to 1.4-1.6. By associating the specific dosing pressure adjustment coefficient with the type of reagent, the dosing pressure adjustment coefficient can be determined as needed.

[0167] S203. Determine the target feed pressure of the reagent at the reagent inlet using the following formula based on the dosing pressure adjustment coefficient and the inlet water pressure:

[0168]

[0169] Wherein, P1 is the inlet water pressure, P2 is the target agent feed pressure, and K3 is the dosing pressure adjustment coefficient, with a value range of 1-1.6.

[0170] To ensure the reagent can be pumped into the mixing tank, P2 should be greater than P1. The value of P2 ranges from 0 to 0.48 MPa. When the wastewater inlet pressure increases, the feed pressure at the reagent dosing inlet should be increased simultaneously to maintain a constant mixing ratio between the reagent and the water flow. When the reagent viscosity is high, a larger K3 value is used to compensate for the flow resistance.

[0171] S203. Adjust the feed pressure at the drug inlet according to the target drug feed pressure.

[0172] The integrated equipment controls the output pressure of the dosing pump to ensure the feed pressure reaches the target chemical feed pressure. Specifically, a closed-loop PID control algorithm controls the variable frequency dosing pump or proportional solenoid valve to achieve automatic pressure stabilization, and a pressure sensor on the chemical inlet pipeline monitors the actual pressure at the chemical inlet in real time to ensure that the requirements are met.

[0173] Through real-time monitoring and feedback control, the system automatically adjusts the dosing pressure, avoiding reagent waste and excessive energy consumption. It enables uniform reagent dosing even under fluctuating wastewater pressure, improving mixing and reaction efficiency, and is suitable for integrated control of different types of reagents and multi-stage dosing systems.

[0174] In addition to controlling the dosage of the agent, the flow rate of the agent outlet can also be automatically controlled to ensure that the agent can be mixed evenly in the mixing tank while ensuring the treatment effect.

[0175] In addition to the above method embodiments, the automatic adjustment of the flow rate at the drug inlet also includes the following steps:

[0176] S301. Obtain the influent flow rate at the wastewater inlet of the mixing tank and the effective reactant concentration at the reagent inlet.

[0177] In this step, the influent flow rate at the wastewater inlet is measured using a flow meter or sensor. The effective reactant concentration is the concentration of the active ingredient in the reagent that contributes to the reaction; this data can be obtained through online concentration sensors or sampling analysis.

[0178] S302. Determine the target reagent feed flow rate at the reagent inlet based on the inlet flow rate, effective reactant concentration, inlet pressure, and dosing pressure adjustment coefficient.

[0179] This step determines the target reagent feed flow rate by comprehensively considering the influent flow rate, effective reactant concentration, influent pressure, and dosing pressure adjustment coefficient.

[0180] In one specific implementation, the formula for calculating the target agent feed flow rate is:

[0181]

[0182] Where Q1 is the influent flow rate, Q2 is the target reagent feed flow rate, M2 is the target reagent dosage, P2 is the target reagent feed pressure, and C... 有效成分 To determine the effective concentration of the reactant, K4 is the reagent flow rate adjustment coefficient, and K4 is positively correlated with P2.

[0183] The positive correlation between K4 and P2 can be linear or non-linear, without specific restrictions. K4 ranges from 0 to 8, and P2 ranges from 0 to 0.48 MPa.

[0184] The value range is approximately 0.2-1.

[0185] The feed flow rate of the target agent can be dynamically determined using the above calculation formula.

[0186] S303. Adjust the feed flow rate of the reagent inlet according to the target reagent feed flow rate.

[0187] After determining the target agent feed flow rate, the integrated equipment automatically adjusts the agent inlet feed flow rate by regulating the agent dosing equipment (such as dosing pumps, flow control valves, etc.). A closed-loop control system monitors the actual agent flow rate and compares it with the target agent feed flow rate. If the actual flow rate is higher than the target flow rate, the pump speed is reduced or the flow control valve opening is decreased; if the actual flow rate is lower than the target flow rate, the pump speed is increased or the flow control valve opening is increased.

[0188] By monitoring key parameters such as influent flow rate, active ingredient concentration, and pressure in real time, the feed flow rate of the reagent can be dynamically adjusted to avoid reagent waste.

[0189] In addition, to ensure efficient and stable operation of the reaction within the mixing tank, the parameters within the tank are automatically controlled, including the following steps:

[0190] S401. Obtain the internal temperature, pH, and pressure of the mixing tank.

[0191] Multiple sensors installed inside the mixing tank collect key operating parameters in real time. A temperature sensor detects the real-time temperature of the mixed liquid to determine the reaction rate and equilibrium state. A pH probe monitors changes in the acidity or alkalinity of the mixture to reflect reactant conversion and neutralization effectiveness. A pressure sensor collects the tank pressure to monitor the system's airtightness and reaction safety.

[0192] S402. By controlling the heating coil, the valve port of the sewage inlet, the valve port of the chemical inlet, and the pressure relief valve port, the temperature inside the tank is kept within the preset temperature range, the pH inside the tank is kept within the preset pH range, and the pressure inside the tank is kept within the preset pressure range.

[0193] When the temperature inside the tank is below the lower limit of the preset temperature range, the heating coil is turned on or its heating power is increased; when the temperature is above the upper limit of the preset temperature range, the heating power is reduced or the flow of cold liquid is increased by controlling the wastewater inlet valve to achieve cooling. This closed-loop regulation keeps the reaction system within the optimal temperature range, improving the reaction rate and stability.

[0194] When the pH exceeds the preset pH range, the influent flow rate is controlled or the dosage of the added reagent is adjusted. The control system can automatically fine-tune based on the PID algorithm to maintain the pH within the preset range.

[0195] When the pressure inside the tank exceeds the safety threshold, the pressure relief valve automatically opens to release pressure; when the pressure is too low, the appropriate working pressure is maintained by adjusting the inlet water flow or closing the pressure relief valve. Reactions under suitable pressure ensure reaction efficiency.

[0196] The following is combined with Figures 1-3 The structure of a wastewater treatment mixed reactor is described, and the automated control process is introduced with a specific example:

[0197] Adjustment and setting of wastewater quality parameters and influent status: The COD monitor at inlet 1b automatically monitors and records the COD index of the wastewater, and the pH sensor inside the tank automatically monitors and records the pH index of the solution inside the tank (the pH of the wastewater inlet can be manually monitored if necessary) to ensure that the wastewater can reach good reaction conditions with strong oxidizing agents, and to adjust the influent pH of the wastewater in time when errors occur. The influent flow controller 41 automatically controls its appropriate influent flow rate, and the influent pressure regulator 42 adjusts its influent pressure range to 0-0.3MPa.

[0198] The liquid inlet method can be automatically selected to mix in air or oxygen bubbles. One function is to promote thorough mixing of wastewater and reagents, accelerating the reaction rate and enhancing mass transfer mixing. For example, when COD pollutant concentrations in wastewater are uneven, or when oxidants tend to accumulate locally after addition, the gas can promote wastewater circulation, allowing the oxidant to fully contact the organic matter and preventing incomplete local reactions. Secondly, it can remove attached pollutants. If the wastewater contains suspended or attached COD, the gas disturbance can remove these pollutants, allowing them to react with the oxidant and improving COD removal efficiency. Thirdly, the gas can promote the efficient conduct of certain oxidation reactions, such as replenishing the oxygen required for reactions. The reaction of some strong oxidizing substances depends on oxygen; the introduction of gas can replenish the oxygen in the system, increasing free radical production and thus enhancing COD removal efficiency.

[0199] The dosing system automatically controls its dosing status: using the pressure, flow rate and dosage calculation formula, based on the above measured parameter information and the type of agent, the dosage is automatically adjusted by the agent dosage controller 51 at the agent inlet 1d, and the agent flow controller 52 and agent pressure regulator 5 adjust the agent flow rate and pressure respectively to promote the dynamic matching of the agent with the wastewater and achieve a better mixing effect.

[0200] The pH sensor inside the tank automatically monitors and records the pH index of the liquid (the pH of the agent can be manually monitored when necessary) to ensure that it meets the good reaction conditions with the sewage. When errors occur, the pH of the added agent can be adjusted in time. The addition method can also be to mix in air or oxygen bubbles, and the mechanism of action is the same as above.

[0201] Monitoring and setting of reaction temperature, pH, and pressure within the tank: Temperature sensor 61, pH sensor, and pressure sensor 62 within the tank are used to monitor the temperature, pH, and pressure of the chemical reaction in real time. The temperature is adjusted to a suitable level using the temperature control coil 3. The appropriate pH and pressure are also adjusted by regulating the wastewater inlet parameters, reagent dosing parameters, and pressure relief valve parameters. If necessary, a 1g sample of the mixed solution can be taken from the sampling port for external experiments. Various indicators (including oxidation effect) under the oxidation reaction are periodically tested to ensure efficient and stable operation of the mixing reactor.

[0202] Wastewater and sludge discharge after treatment: Under suitable reaction conditions, the theoretical reaction time is calculated in advance, and samples are taken at preset intervals through the sampling port to detect the oxidation effect and thus determine the degree of reaction in the tank. The treated wastewater can be continuously discharged to the next treatment unit through outlet 1c. Sludge in the tank is periodically cleaned and discharged to a sludge transport truck or sludge temporary storage tank through sludge inlet 1f to ensure the good working condition of the mixing reactor.

[0203] The following examples are passed Figures 1-3 The wastewater treatment mixed reactor shown is used for the reaction.

[0204] Example 1

[0205] Using the calculation formulas for the target reagent dosage, feed pressure, and feed flow rate described in the above embodiments, the phenolic resin wastewater (COD) Cr The reaction of 1% hydrogen peroxide (10000 mg / L) with 1% hydrogen peroxide was carried out under automated control conditions: an internal pressure of 0.2 MPa, an internal temperature of 60℃, a wastewater influent flow rate of 1 m / s, and a residence time of 60 min. The hydrogen peroxide utilization rate was 66%, and the COD... Cr The removal rate is 85%, the reaction time is 50% shorter than that of traditional stirring, and the power consumption is 0.35 kWh·m³. -3 It can run continuously without dead zones.

[0206] Comparative Example 1

[0207] Take 1 m of wastewater from the same batch as in Example 1 3 Add an equal amount of hydrogen peroxide as in Example 1, place in a mechanically stirred reactor, and react under the conditions of 300 r / min, 60℃, and 120 min. The hydrogen peroxide utilization rate is 55%, and the COD... Cr The removal rate was 74%. Significant short-circuiting was observed at the bottom of the reactor; 20% hydrogen peroxide needed to be added and the reaction time extended by 30 minutes to achieve the effect of Example 1. The power consumption was 0.65 kWh·m³. -3 .

[0208] Example 2

[0209] Using the calculation formulas for the target pesticide dosage, feed pressure, and feed flow rate described in the above embodiments, the pesticide intermediate wastewater (COD) Cr The wastewater concentration was 15000 mg / L, TN was 2000 mg / L, and 2% hydrogen peroxide was added. The reaction was carried out under automated control conditions: tank pressure 0.25 MPa, tank temperature 40℃, wastewater influent flow rate 1 m / s, and a residence time of 60 min. The hydrogen peroxide utilization rate was 61%, and the COD... CrThe removal rate is 80%, the TN removal rate is 45%, the reaction time is shortened by 50%, no mechanical stirring is required, and the power consumption is 0.65 kWh·m³. -3 It operates continuously and stably.

[0210] Comparative Example 2

[0211] Take 1 m of wastewater from the same batch as in Example 2 3 An equal amount of hydrogen peroxide as in Example 2 was added, and the mixture was placed in a mechanically stirred reactor and reacted at 300 r / min, 60℃, and for 120 min. The hydrogen peroxide utilization rate was 46%, and the COD was [not specified]. Cr The removal rate was 62%, and the TN removal rate was 38%. The residual liquid had a strong odor, requiring the addition of 30% hydrogen peroxide and an extension of the reaction time to 4 hours to achieve the effect of Example 2. The power consumption was 0.8 kWh·m³. -3 .

[0212] Example 3

[0213] Using the calculation formulas for the target reagent dosage, feed pressure, and feed flow rate described in the above embodiments, high-salinity wastewater (TDS 3.5%, COD 1.5%) can be effectively treated. Cr The wastewater was treated with 8000 mg / L hydrogen peroxide and 1% hydrogen peroxide at an internal pressure of 0.25 MPa, an internal temperature of 45℃, a feed flow rate of 1.1 m / s, and a residence time of 45 min. The hydrogen peroxide utilization rate was 64%, and the COD... Cr The removal rate is 82%, the reaction time is 50% shorter than that of traditional stirring, and the power consumption is 0.38 kWh·m³. -3 It does not cause salt crystallization blockage and operates stably continuously.

[0214] Comparative Example 3

[0215] Take 1 m of wastewater from the same batch as in Example 3 3 Add an equal amount of hydrogen peroxide as in Example 3, place in a mechanically stirred reactor, and react at 300 r / min, 45°C, and 90 min for oxidant utilization of 49% and COD. Cr The removal rate was 68%, but approximately 3 mm of scale formed on the reactor wall due to salt precipitation, requiring shutdown and cleaning. The reaction solution retained a noticeable color, necessitating the addition of 20% hydrogen peroxide and an extension of the reaction time by 30 minutes to achieve the same effect as in Example 3. Power consumption was 0.7 kWh·m³. -3 .

[0216] Because it eliminates the need for mechanical stirring and additional power, the wastewater treatment mixing reactor significantly reduces energy consumption while ensuring effective mixing. The absence of dynamic stirring equipment reduces the need for additional corrosion protection and sealing measures, lowering investment and maintenance costs. Automated CNC control of wastewater inlet pressure, flow rate, and reagent dosage, pressure, and flow rate ensures optimal reaction conditions within the mixing reactor, improving treatment efficiency.

[0217] This application also provides a control device for a wastewater treatment mixing reactor, the control device comprising:

[0218] The acquisition module is used to acquire the chemical oxygen demand, the content of organic matter to be degraded, and the types of added reagents at the wastewater inlet of the mixing tank.

[0219] The determination module is used to determine the target dosage of the reagent based on the chemical oxygen demand, the content of organic matter to be degraded, and the type of reagent.

[0220] The control module is used to adjust the dosage of the drug at the drug inlet according to the target dosage.

[0221] The acquisition module is also used to acquire the inlet water pressure of the wastewater inlet of the mixing tank;

[0222] The determination module is also used to determine the dosing pressure adjustment coefficient based on the type of reagent; and to determine the target reagent feed pressure at the reagent inlet based on the dosing pressure adjustment coefficient and the inlet water pressure.

[0223] The control module is also used to adjust the feed pressure at the drug inlet according to the feed pressure of the target drug.

[0224] The acquisition module is also used to acquire the influent flow rate at the wastewater inlet of the mixing tank and the effective reactant concentration at the reagent inlet.

[0225] The determination module is also used to determine the target reagent feed flow rate at the reagent inlet based on the inlet water flow rate, effective reactant concentration, inlet water pressure, and dosing pressure adjustment coefficient.

[0226] The control module is also used to adjust the feed flow rate of the drug inlet according to the target drug feed flow rate;

[0227] The acquisition module is also used to acquire the internal temperature, pH, and pressure of the mixing tank.

[0228] The control module is also used to control the heating coil, the valve port of the sewage inlet, the valve port of the chemical inlet, and the pressure relief valve port to keep the temperature inside the tank within a preset temperature range, the pH inside the tank within a preset pH range, and the pressure inside the tank within a preset pressure range.

[0229] This application also provides a control device, which can be the integrated device in the above embodiments, including: a memory and a processor;

[0230] The memory stores the instructions that the computer executes;

[0231] The processor executes computer execution instructions stored in memory, causing the processor to perform any of the methods described in the above method embodiments.

[0232] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any of the above method embodiments.

[0233] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A wastewater treatment mixing reactor, characterized in that, include: A mixing tank having a mixing chamber, an inlet, and an outlet, wherein the inlet and the outlet are both connected to the mixing chamber; Multiple sets of shear blades are disposed on the inner wall of the mixing chamber and spaced apart along the axial direction of the mixing chamber. Multiple shear blades are provided in the same set and spaced apart along the circumference of the mixing chamber. The shear blades of adjacent sets are staggered along the circumference of the mixing chamber.

2. The wastewater treatment mixing reactor according to claim 1, characterized in that, The mixing tank has a first end in the axial direction, and the inlet is adjacent to the first end; The shearing blade is inclined toward the first end from one end near the inner wall of the mixing chamber to the end near the middle of the mixing chamber.

3. The wastewater treatment mixing reactor according to claim 2, characterized in that, The angle between the tilt direction of the shear blade and the radial direction of the mixing chamber is α, which satisfies 20°≤α≤35°.

4. The wastewater treatment mixing reactor according to claim 2, characterized in that, The mixing chamber's axis is parallel to the vertical direction, and the first end is located at the bottom of the mixing tank; and / or, The inlet is equipped with a filter screen, the outlet is located below the inlet, and the outlet and the inlet are respectively located on opposite sides of the axis of the mixing tank; and / or, The inlet is equipped with an inlet valve, and the outlet is equipped with an outlet valve.

5. The wastewater treatment mixing reactor according to any one of claims 1-4, characterized in that, At least one set of shear blades is provided between the inlet and the outlet; And / or, the shear blade is provided with a plurality of flow guiding channels, each of the flow guiding channels extending along the axial direction of the mixing chamber; And / or, the wastewater treatment mixing reactor further includes a temperature regulating coil, which is arranged around the periphery of the mixing tank for regulating the temperature inside the mixing chamber; And / or, the wastewater treatment mixed reactor further includes a chemical oxygen demand (COD) monitor, an influent flow controller, and an influent pressure regulator, all of which are located at the inlet; And / or, the mixing tank further has a reagent port communicating with the mixing chamber, the reagent port being equipped with a reagent pressure regulator, a reagent dosage controller and a reagent flow controller; at least one set of shearing blades is provided between the reagent port and the inlet; And / or, the mixing chamber is equipped with an acid-base sensor, a temperature sensor and a pressure sensor.

6. The wastewater treatment mixing reactor according to any one of claims 1-4, characterized in that, The mixing tank also has a pressure relief port communicating with the mixing chamber, the pressure relief port being located at the top of the mixing tank and equipped with a pressure relief valve; and / or, The mixing tank also has a sludge inlet communicating with the mixing chamber. The sludge inlet is located at the bottom of the mixing tank and is equipped with a sludge valve. The sludge inlet is connected to a drain pipe, which is connected to an emergency sludge storage tank; and / or, The mixing tank also has a sampling port connected to the mixing chamber, and the sampling port is equipped with a sampling valve.

7. A method for controlling a wastewater treatment mixed reactor, characterized in that, Applied to the wastewater treatment mixing reactor according to any one of claims 1-6, wherein the mixing tank of the wastewater treatment mixing reactor has a reagent inlet, the control method includes: Obtain the chemical oxygen demand, the content of organic matter to be degraded, and the types of reagents added at the wastewater inlet of the mixing tank; The target dosage of the reagent is determined based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of reagent. Adjust the dosage of the drug at the drug inlet according to the target dosage.

8. The control method according to claim 7, characterized in that, The step of determining the target reagent dosage based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of reagent includes: Determine the dosage correction factor based on the content of the organic matter to be degraded; Determine the drug type correction factor based on the drug type; The target dosage of the agent is determined based on the dosage correction factor, the agent type correction factor, the preset minimum dosage multiple, and the chemical oxygen demand.

9. The control method according to claim 8, characterized in that, The step of determining the target dosage of the agent based on the dosage correction coefficient, the agent type correction coefficient, the preset minimum dosage multiple, and the chemical oxygen demand includes: Wherein, M2 is the target dosage, M1 is the chemical oxygen demand, K1 is the dosage correction coefficient, K2 is the dosage type correction coefficient, N is the minimum dosage multiple, and N is greater than or equal to 3.

10. The control method according to claim 8 or 9, characterized in that, The step of determining the dosage correction coefficient based on the content of the organic matter to be degraded includes: If the mass percentage of olefins in the organic matter to be degraded is greater than 90%, then the dosage correction factor is determined to be 0-1. If the content of the organic matter to be degraded contains more than 80% aromatic compounds by mass, then the correction factor for the dosage is determined to be 1-2. If the mass percentage of organic amines in the organic matter to be degraded is greater than 40%, then the dosage correction factor is determined to be 2-3. And / or, determining the drug type correction factor based on the drug type includes: If the drug is hypochlorous acid, then the correction factor for the drug type is determined to be 0-1.5; If the agent is ozone, then the correction factor for the agent type is determined to be 1.5-2.5; If the agent is hydrogen peroxide, then the correction factor for the agent type is determined to be 2-3.

11. The control method according to any one of claims 7-9, characterized in that, The control method further includes: Obtain the inlet pressure of the wastewater inlet of the mixing tank; The dosing pressure adjustment coefficient is determined according to the type of agent; if the agent is ozone, the dosing pressure adjustment coefficient is determined to be 1-1.2; if the agent is hydrogen peroxide, the dosing pressure adjustment coefficient is determined to be 1.2-1.4; if the agent is hypochlorous acid, the dosing pressure adjustment coefficient is determined to be 1.4-1.

6. The target feed pressure of the reagent inlet is determined based on the dosing pressure adjustment coefficient and the inlet water pressure using the following formula: Wherein, P1 is the inlet water pressure, P2 is the target agent feed pressure, and K3 is the dosing pressure adjustment coefficient, with a value range of 1-1.6; Adjust the feed pressure of the drug inlet according to the target drug feed pressure.

12. The control method according to claim 11, characterized in that, The control method further includes: Obtain the influent flow rate at the wastewater inlet of the mixing tank and the effective reactant concentration at the reagent inlet; The target reagent feed flow rate at the reagent inlet is determined based on the inlet flow rate, the effective reactant concentration, the inlet pressure, and the dosing pressure adjustment coefficient. Adjust the feed flow rate of the agent inlet according to the target agent feed flow rate; The formula for calculating the feed flow rate of the target agent is as follows: Wherein, Q1 is the influent flow rate, Q2 is the target agent feed flow rate, M2 is the target agent dosage, P2 is the target agent feed pressure, and C... 有效成分 The effective reactant concentration is given, and K4 is the reagent flow rate adjustment coefficient. K4 is positively correlated with P2.

13. The control method according to any one of claims 7-9, characterized in that, The control method further includes: Obtain the internal temperature, pH, and pressure of the mixing tank; By controlling the heating coil, the valves at the sewage inlet, the chemical inlet, and the pressure relief valve, the temperature inside the tank is kept within a preset temperature range, the pH inside the tank is kept within a preset pH range, and the pressure inside the tank is kept within a preset pressure range.

14. A control device for a wastewater treatment mixing reactor, characterized in that, The control device includes: The acquisition module is used to acquire the chemical oxygen demand, the content of organic matter to be degraded, and the types of added reagents at the wastewater inlet of the mixing tank. The determination module is used to determine the target dosage of the agent based on the chemical oxygen demand, the content of the organic matter to be degraded, and the type of agent. The control module is used to adjust the dosage of the drug at the drug inlet according to the target dosage.

15. A control device, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 7-13.

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