A high-efficiency neutralization system for alkali water in a mixing station

Abstract

The utility model discloses a kind of mixing station alkaline water efficient neutralization system, including alkaline water pool, conveying pipe fitting, gas supply system, micro-nano bubble generator, reactor and neutral water pool, this micro-nano bubble generator is used to make micro-nano bubble with carbon dioxide transported by gas supply system, and make micro-nano bubble and alkaline water mixed to form gas-liquid mixture liquid conveyed by conveying pipe fitting, and communicate between micro-nano bubble generator and neutral water pool by reactor, reactor has longer reaction pipeline, so that gas-liquid mixture liquid is fully contacted in flowing process, further promote the absorption and reaction of carbon dioxide, so that effluent PH value is stably in neutral range and can be directly discharged into neutral water pool, meet environmental protection discharge requirement, the mixing station alkaline water efficient neutralization system designed in the technical scheme is realized efficient, economic, environmentally-friendly neutralization treatment by micro-nano bubble technology and optimization reaction path.

Description

Technical Field

[0001] This utility model relates to the field of wastewater neutralization treatment technology, specifically to a high-efficiency neutralization system for alkaline water in a mixing plant. Background Technology

[0002] After each shift, the tank trucks at the mixing plant need to be cleaned, generating a large amount of slurry. Although some of this slurry is recycled for production, the excess must be treated by a filter press before being discharged into a clear water tank. However, the filtered water contains a high degree of alkalinity. According to discharge standards, this type of wastewater, due to its high pH, ​​cannot meet the requirements for external discharge and needs to be neutralized. Existing neutralization systems in China mainly involve introducing carbon dioxide into a spray tower or adding an aeration device at the bottom of the reaction tank to allow the alkaline water and carbon dioxide to fully contact and react. While this achieves the purpose of neutralization, this method has disadvantages such as insufficient gas-liquid contact area, low contact efficiency, slow reaction speed, low carbon dioxide utilization rate, and high operating costs. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problems of insufficient gas-liquid contact area, low contact efficiency, slow reaction speed, low carbon dioxide utilization rate, and high operating cost in the existing neutralization treatment method of alkaline water and carbon dioxide by aeration or spraying.

[0004] To solve the above-mentioned technical problems, this utility model provides an efficient alkaline water neutralization system for a mixing plant, including an alkaline water tank, a conveying pipe, an air supply system, a micro / nano bubble generator, a reactor, and a neutral water tank. The alkaline water tank is used to store alkaline water that has been filtered after cleaning the mixing plant's tank trucks. One end of the conveying pipe is connected to the alkaline water tank and is used to convey the alkaline water in the alkaline water tank. The air supply system is used to supply carbon dioxide to the micro / nano bubble generator. The water inlet of the micro / nano bubble generator is connected to the other end of the conveying pipe, and its air inlet is connected to the air supply system. The micro / nano bubble generator is used to generate micro / nano bubbles from the carbon dioxide conveyed by the air supply system and mix the micro / nano bubbles with the alkaline water conveyed by the conveying pipe to form a gas-liquid mixture. The micro / nano bubble generator and the neutral water tank are connected through a reactor, which has a reaction pipeline that accommodates the gas-liquid mixture and allows the alkaline water and carbon dioxide to react fully.

[0005] As a preferred embodiment, the micro-nano bubble generator is configured as a single group or multiple groups; the air inlet end of each group of the micro-nano bubble generator is connected to at least one air inlet pipe, and the air inlet pipe is connected to the air supply pipeline of the air supply system.

[0006] As a preferred embodiment, multiple sets of micro-nano bubble generators are connected in series between the conveying pipe and the reactor, and the multiple sets of micro-nano generators are connected to each other through the reactor. The gas supply system is connected to the multiple sets of micro-nano bubble generators through the air inlet pipe.

[0007] As a preferred embodiment, multiple sets of micro-nano bubble generators are connected in parallel between the conveying pipe and the reactor, and the gas supply system is connected to the multiple sets of micro-nano bubble generators through the air inlet pipe.

[0008] As a preferred embodiment, the reactor is configured with multiple sets of winding reaction pipes, which are connected in series or in parallel. The inlet of the reactor is connected to the outlet of the micro / nano bubble generator, and the inlet of the neutral water tank is connected to the outlet of the reactor.

[0009] As a preferred embodiment, the gas supply system includes a carbon dioxide gas source, a flow valve, and a solenoid valve. The flow valve and the solenoid valve are connected in series on the inlet pipe between the carbon dioxide gas source and the micro / nano bubble generator. The flow valve is used to regulate the flow rate of carbon dioxide delivery, and the solenoid valve is used to control the opening and closing of the carbon dioxide delivery pipeline.

[0010] As a preferred embodiment, the reactor is a container that extends the mixing and transit time of alkaline water and micro / nano bubbles. The interior of the container is provided with a flow channel composed of bending components, which are multiple sets of baffles arranged inside the container. The multiple sets of baffles are arranged in an alternating manner to form a meandering flow channel.

[0011] As a preferred embodiment, a back pressure valve is also included; the back pressure valve is installed on the pipeline between the micro / nano bubble generator and the reactor, or on the pipeline between the reactor and the neutral water tank; the back pressure valve is used to maintain the pressure in the pipeline to promote the dissolution of carbon dioxide in alkaline water.

[0012] As a preferred embodiment, the system further includes detection components installed in the alkaline water tank and the neutral water tank respectively. The detection components include a level gauge and a pH meter. The level gauge is installed in the alkaline water tank or the neutral water tank. At least two pH meters are provided. One pH meter is installed in the alkaline water tank to detect the initial pH value of the alkaline water to be transported. The other pH meter is installed at the outlet of the neutral water tank or the reactor to detect the pH value of the water after the reaction.

[0013] As a preferred embodiment, the conveying pipe includes a water pump and a water delivery pipeline connected together. One end of the water delivery pipeline is connected to an alkaline water tank, and the other end is connected to the water inlet of a micro-nano bubble generator. The water pump is used to provide power for the delivery of alkaline water.

[0014] As a preferred embodiment, the system further includes a sequential system for secondary neutralization of water in a neutral water tank that does not meet the pH standard, and a control device electrically connected to a pH meter, a flow valve, a solenoid valve, and the sequential system. The sequential system includes at least one sequential delivery pipeline and a sequential control component. The two ends of the sequential delivery pipeline are connected to the neutral water tank and the micro / nano bubble generator, respectively. The sequential control component is used to control the opening and closing of the sequential delivery pipeline. When the sequential control component is turned on, the water in the neutral water tank is delivered to the micro / nano bubble generator for secondary neutralization through the sequential delivery pipeline.

[0015] Compared with the prior art, the technical solution of this utility model has the following advantages: 1. The alkaline water high-efficiency neutralization system for mixing plants provided by this utility model uses a micro-nano bubble generator to generate carbon dioxide into micro-nano bubbles, which are then mixed with alkaline water to form a gas-liquid mixture. This significantly increases the contact area between carbon dioxide and alkaline water, thereby accelerating the neutralization reaction rate. Compared with traditional aeration or spraying methods, micro-nano bubbles significantly improve gas-liquid mass transfer efficiency, shorten reaction time, and improve treatment efficiency. Furthermore, a reactor connects the micro-nano bubble generator and the neutral water tank. The reactor has a long reaction pipeline, allowing the gas-liquid mixture to fully contact during flow, thus improving the gas-liquid mixture's efficiency. Sufficient residence time is provided to further promote the absorption and reaction of carbon dioxide, ensuring that the alkaline water and carbon dioxide react fully and ultimately reach the required neutral pH value. This allows the effluent pH value to be stabilized within the neutral range and directly discharged into the neutral water tank, meeting environmental emission requirements. The high-efficiency neutralization system for alkaline water in the mixing plant designed in this technical solution overcomes the shortcomings of existing technologies, such as slow reaction speed, low carbon dioxide utilization rate, and high operating cost, through micro-nano bubble technology and optimized reaction path. It achieves efficient, economical, and environmentally friendly neutralization treatment, suitable for the high-frequency alkaline water treatment needs of the mixing plant, and improves the flexibility and reliability of the overall wastewater treatment.

[0016] 2. In the high-efficiency neutralization system for alkaline water in the mixing plant provided by this utility model, multiple sets of micro-nano bubble generators are connected in series between the conveying pipe and the reactor. When multiple sets of micro-nano bubble generators work in series, the alkaline water undergoes multiple micro-nano bubble mixing and reactor circulation processes. Each time it passes through a set of micro-nano bubble generators, a large number of micro-nano CO2 bubbles are regenerated, continuously increasing the gas-liquid contact area and extending the reaction time. These micro-nano bubbles have a very large specific surface area, and their tiny size allows them to penetrate deep into the liquid, avoiding incomplete local reactions and neutralizing the OH- in the alkaline water. -The full reaction with CO2 helps the reaction to proceed in depth, ultimately ensuring that the pH of the effluent meets the standard. This generator series layout design can achieve staged reaction and deep neutralization, enhance the efficiency of gas-liquid reaction, and more accurately control the pH value within the neutral target range.

[0017] 3. In the high-efficiency neutralization system for alkaline water in the mixing plant provided by this utility model, when multiple sets of micro-nano bubble generators work in parallel, the alkaline water is evenly distributed to each set of micro-nano bubble generators. The parallel structure allows multiple sets of micro-nano bubble generators to process alkaline water simultaneously. Each set of micro-nano bubble generators processes the gas-liquid mixture independently and consistently. The composition and concentration of the gas-liquid mixture entering the reactor are more uniform among the sets, and the pH value of the effluent after the reaction fluctuates less. Since each set of micro-nano bubble generators is an independent module, if one set fails to work properly, the other sets can still operate normally, preventing the entire system from paralyzing and ensuring production continuity. The system has strong fault tolerance and high operational stability. This parallel layout design of the generators improves the uniformity of gas-liquid mixing, enhances the pH stability of the effluent, significantly increases the processing throughput, and is suitable for high-flow-rate scenarios.

[0018] 4. In the alkaline water high-efficiency neutralization system of the mixing plant provided by this utility model, the reactor is set as multiple sets of winding reaction pipes, and the layout is adopted in series or parallel. The advantage of this design is that the winding design of the reaction pipes greatly increases the total length of the pipes within a limited physical space. This allows the gas-liquid mixture to have a longer flow distance and time for neutralization reaction, ensuring that the pH of the effluent is stable and meets the standard. In addition, when the fluid flows through the winding pipes, it will continuously change the flow direction, which easily forms a turbulent flow state. This turbulence will continuously shear and break up the micro-nano bubbles, making their distribution more uniform, preventing them from agglomerating into large bubbles, increasing the gas-liquid contact area, continuously enhancing the mass transfer process, and significantly improving the reaction rate. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the structure of the alkaline water high-efficiency neutralization system for the mixing plant of this utility model. Figure 2 This is a schematic diagram of another alternative reactor to the present invention; Figure 3 This is a schematic diagram of the parallel connection of the reactors according to this utility model; Figure 4 for Figure 1 The diagram shows the structure of the alkaline water high-efficiency neutralization system of the mixing plant, configured as a sequential system.

[0021] Explanation of reference numerals in the attached diagram: 1. Alkaline water tank; 2. Delivery pipe fittings; 21. Water pump; 3. Gas supply system; 31. Flow valve; 32. Solenoid valve; 4. Micro / nano bubble generator; 41. Air inlet pipe; 5. Reactor; 51. Reaction pipeline; 52. Flow channel; 53. Baffle; 6. Neutral water tank; 61. Back pressure valve; 7. Level gauge; 8. pH meter; 9. Sequential delivery pipeline; 91. Sequential control component. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example The following is a detailed description of this embodiment with reference to the accompanying drawings: This utility model provides, for example Figure 1-4The diagram illustrates a high-efficiency alkaline water neutralization system for a mixing plant, comprising an alkaline water tank 1, a conveying pipe 2, an air supply system 3, a micro / nano bubble generator 4, a reactor 5, and a neutral water tank 6. The alkaline water tank 1 stores alkaline water that has undergone pressure filtration after cleaning the mixing plant's tank trucks. This process removes impurities such as mud and residue, preventing frequent maintenance of the micro / nano bubble generator 4 and reactor 5 due to blockages, thus reducing equipment failure rates and maintenance costs. One end of the conveying pipe 2 is connected to the alkaline water tank 1 and used to convey the alkaline water within it. The air supply system 3 is used for... Carbon dioxide is supplied to the micro-nano bubble generator 4; the water inlet of the micro-nano bubble generator 4 is connected to the other end of the conveying pipe 2, and its air inlet is connected to the gas supply system 3. The micro-nano bubble generator 4 is used to generate micro-nano bubbles from the carbon dioxide supplied by the gas supply system 3, and to mix the micro-nano bubbles with the alkaline water supplied by the conveying pipe 2 to form a gas-liquid mixture; the micro-nano bubble generator 4 is connected to the neutral water tank 6 through a reactor 5, and the reactor 5 has a reaction pipeline that contains the gas-liquid mixture and allows the alkaline water and carbon dioxide to react fully.

[0026] The above-described implementation method is the core technical solution of this embodiment. This neutralization system uses a micro / nano bubble generator 4 to generate micro / nano bubbles from carbon dioxide, which are then mixed with alkaline water to form a gas-liquid mixture. This significantly increases the contact area between carbon dioxide and alkaline water, thereby accelerating the neutralization reaction rate. Compared to traditional aeration or spraying methods, micro / nano bubbles significantly improve gas-liquid mass transfer efficiency, shorten reaction time, and increase treatment efficiency. The micro / nano bubble generator 4 and the neutral water tank 6 are connected by a reactor 5. The reactor 5 has a long reaction pipeline, allowing the gas-liquid mixture to fully contact during flow, providing the gas-liquid mixture with… Sufficient residence time further promotes the absorption and reaction of carbon dioxide, ensuring that the alkaline water and carbon dioxide react fully and ultimately reach the required neutral pH value. This allows the effluent pH value to be stabilized within the neutral range and directly discharged into the neutral water tank, meeting environmental emission requirements. The high-efficiency neutralization system for alkaline water in the mixing plant designed in this technical solution overcomes the shortcomings of existing technologies, such as slow reaction speed, low carbon dioxide utilization rate, and high operating costs, through micro-nano bubble technology and optimized reaction path. It achieves efficient, economical, and environmentally friendly neutralization treatment, suitable for the high-frequency alkaline water treatment needs of the mixing plant, and improves the flexibility and reliability of the overall wastewater treatment.

[0027] The following is combined Figures 1-3 The specific setup of the micro / nano bubble generator and reactor is described in detail below: The number of micro-nano bubble generators 4 can be flexibly configured according to the alkaline water production of the mixing plant. When the alkaline water treatment volume is small, the micro-nano bubble generator 4 can be set as a single set, and single-set operation can meet the demand. When the alkaline water production increases, the processing capacity can be linearly increased by increasing the number of sets, that is, the micro-nano bubble generator 4 can be set as multiple sets. Multiple sets of micro-nano bubble generators 4 can be arranged in series or parallel without replacing the core equipment, adapting to different scenarios from small and medium-scale to large-scale mixing plants, and reducing equipment iteration costs. Among them, the air inlet end of each set of micro-nano bubble generators 4 is connected to at least one air inlet pipe 41. The air inlet pipe 41 is connected to the air supply pipeline of the air supply system 3. The air supply system 3 includes a carbon dioxide gas source, a flow valve 31, and a solenoid valve 32. The flow valve 31 and the solenoid valve 32 are connected in series on the air inlet pipe 41 between the carbon dioxide gas source and the micro-nano bubble generator 4. The flow valve 31 is used to adjust the carbon dioxide delivery flow rate, and the solenoid valve 32 is used to control the opening and closing of the carbon dioxide delivery pipeline.

[0028] In a preferred embodiment, multiple sets of micro / nano bubble generators 4 are connected in series between the conveying pipe 2 and the reactor 5. These multiple sets of micro / nano bubble generators are interconnected through the reactor 5. The gas supply system 3 is connected to each set of micro / nano bubble generators 4 via an air inlet pipe 41. With this structure, when the multiple sets of micro / nano bubble generators 4 operate in series, the alkaline water undergoes multiple micro / nano bubble mixing and circulation processes within the reactor 5. Each time the water passes through a set of micro / nano bubble generators 4, a large number of micro / nano CO2 bubbles are regenerated, continuously increasing the gas-liquid contact area and extending the reaction time. These micro / nano bubbles have a very large specific surface area, and their tiny size allows them to penetrate deep into the liquid, avoiding incomplete local reactions and reducing the OH- ions in the alkaline water. - The full reaction with CO2 helps the reaction to proceed in depth, ultimately ensuring that the pH of the effluent meets the standard. This generator series layout design can achieve staged reaction and deep neutralization, enhance the efficiency of gas-liquid reaction, and more accurately control the pH value within the neutral target range.

[0029] As an alternative to the aforementioned multiple sets of micro / nano bubble generators, refer to Figure 3Multiple sets of micro-nano bubble generators 4 are connected in parallel between the conveying pipe 2 and the reactor 5. The gas supply system 3 is connected to the multiple sets of micro-nano bubble generators 4 through the air inlet pipe 41. With this structure, when the multiple sets of micro-nano bubble generators 4 work in parallel, the alkaline water is evenly distributed to each set of micro-nano bubble generators 4. The parallel structure allows multiple sets of micro-nano bubble generators 4 to process alkaline water simultaneously and in parallel. The gas-liquid mixing process of each set of micro-nano bubble generators 4 is independent and consistent. The composition and concentration of the gas-liquid mixture that finally enters the reactor 5 are more uniform among the sets, and the pH value of the effluent after the reaction fluctuates less. Since each set of micro-nano bubble generators 4 is an independent module, if one set fails to work properly, the other sets can still operate normally without causing the entire system to be paralyzed, ensuring production continuity. The system has strong fault tolerance and high operational stability. This generator parallel layout design improves the uniformity of gas-liquid mixing, enhances the stability of effluent pH value, greatly increases the processing throughput, and is suitable for high flow rate scenarios.

[0030] like Figure 1 As shown, the reactor 5 is configured with multiple sets of winding reaction pipes 51, which are connected in series or parallel. Specifically, these reaction pipes 51 can preferably be in the shape of a coil, a snake, or a spiral. The inlet of the reactor 5 is connected to the outlet of the micro / nano bubble generator 4, and the inlet of the neutral water tank 6 is connected to the outlet of the reactor 5. The advantage of this design is that the winding reaction pipes 51 greatly increase the total length of the pipes within a limited physical space. This allows the gas-liquid mixture a longer flow distance and time for neutralization, ensuring that the pH of the effluent remains stable and meets the standards. Furthermore, as the fluid flows through the winding pipes, it continuously changes its flow direction, easily forming turbulent flow. This turbulence continuously shears and breaks up the micro / nano bubbles, making their distribution more uniform, preventing them from coalescing into large bubbles, increasing the gas-liquid contact area, continuously enhancing the mass transfer process, and significantly improving the reaction rate. These multiple sets of winding reaction pipes 51 can be flexibly configured according to actual needs. For example, multiple sets of winding reaction pipes 51 can be connected in series, and the gas-liquid mixture needs to pass through each set of reaction pipes 51 in sequence. The total reaction time is the sum of the total reaction time of each set. Alternatively, multiple sets of winding reaction pipes 51 can be connected in parallel, and the gas-liquid mixture can be processed simultaneously through multiple sets of reaction pipes. The total processing throughput is the sum of the total processing throughput of each set. This allows for flexible adaptation to processing needs and strong scalability.

[0031] As an alternative embodiment of the above-described reactor, refer to Figure 2The reactor 5 is a container designed to extend the mixing and transit time of alkaline water and micro / nano bubbles. The interior of the container is equipped with a flow channel 52 composed of bent components, which are multiple sets of baffles 53 arranged alternately to form a meandering flow channel 52. This structural design, through the meandering flow channel formed by the staggered baffles, forces the alkaline water and micro / nano bubble mixture to flow along a serpentine or labyrinthine path within the container, significantly increasing the total distance the fluid travels from inlet to outlet. This maximizes the residence time of the micro / nano bubbles in the liquid, and the longer contact time directly ensures a more thorough chemical reaction. Furthermore, when the alkaline water and micro / nano bubble mixture change flow direction and speed multiple times within the meandering flow channel, a strong turbulence effect is generated. This turbulence continuously cuts and disperses the bubble clusters, greatly enhancing the mass transfer rate of carbon dioxide from the gas phase to the liquid phase, promoting efficient mixing, and significantly improving neutralization efficiency.

[0032] The alkaline water high-efficiency neutralization system of the mixing plant in this embodiment also includes a back pressure valve 61. The back pressure valve 61 is installed on the pipeline between the micro / nano bubble generator 4 and the reactor 5, or on the pipeline between the reactor 5 and the neutral water tank 6. The back pressure valve 61 is used to maintain the pressure in the pipeline to promote the dissolution of carbon dioxide in alkaline water. This structural arrangement maintains the pipeline pressure through the back pressure valve 61. The stable pipeline pressure allows the gas-liquid mixture to enter the tortuous reaction pipe of the reactor 5 at a uniform and stable flow rate. This ensures that the inlet water pressure of the micro / nano bubble generator is constant, thereby stably generating micro / nano bubbles with uniform particle size and sufficient quantity. It can also effectively inhibit the expansion, floating and dissipation of micro / nano bubbles, thereby ensuring the uniformity of gas-liquid mixing and reaction efficiency.

[0033] To accurately monitor the liquid levels and pH values ​​of the alkaline water tank 1 and the neutral water tank 6, detection components are also included, respectively installed in the alkaline water tank 1 and the neutral water tank 6. (Refer to...) Figure 1The detection components include a level gauge 7 and a pH meter 8. The level gauge 7 is installed in the alkaline water tank 1 to monitor the amount of alkaline water to be treated in real time. It can also be installed in the neutral water tank 6 to monitor the amount of neutralized water. If the level is too high, the discharge valve can be opened to prevent overflow. The conveying pipe 2 includes a water pump 21 and a water pipeline connected together. One end of the water pipeline is connected to the alkaline water tank 1, and the other end is connected to the inlet of the micro-nano bubble generator 4. The water pump 21 is used to provide power for the conveying of alkaline water. The operating frequency of the water pump 21 can be dynamically adjusted based on the level data: when the level in the alkaline water tank 1 is high, the pump speed is increased to increase the processing capacity. The neutralization system includes at least two pH testers 8. One pH tester 8 is installed in the alkaline water tank 1 to detect the initial pH value of the alkaline water to be transported. The other pH tester 8 is installed at the outlet of the neutral water tank 6 or reactor 5 to detect the pH value of the water after the reaction. The high-efficiency alkaline water neutralization system of the mixing plant in this embodiment also includes a control system that is electrically connected to the pH tester 8, the flow valve 31, and the solenoid valve 32, respectively. The control system can automatically adjust the opening of the flow valve 31 to change the carbon dioxide flow rate according to the pH value detected by the pH tester, or automatically control the number of opening and closing of the solenoid valve 32 to change the carbon dioxide flow rate. The flow valve 31 and the solenoid valve 32 can be linked with the pH tester to realize intelligent dynamic adjustment of CO2 supply, reducing the complexity and error rate of manual intervention.

[0034] The pH value of alkaline water in a mixing plant may fluctuate due to factors such as the frequency of tanker cleaning and the composition of the slurry. A single neutralization reaction is difficult to adapt to all operating conditions. To address the issue of incomplete initial reactions leading to substandard pH values ​​in the alkaline water neutralization process, the high-efficiency alkaline water neutralization system for the mixing plant also includes a sequential system for secondary neutralization of the substandard pH water in the neutral water tank 6. This sequential system is electrically connected to the control device; see details below. Figure 4As shown, the sequential system includes at least one sequential delivery pipeline 9 and a sequential control component 91. The two ends of the sequential delivery pipeline 9 are respectively connected to the neutral water tank 6 and the micro / nano bubble generator 4. The sequential control component 91 is used to control the opening and closing of the sequential delivery pipeline 9, and includes a sequential pump and a sequential solenoid valve installed on the sequential delivery pipeline 9. When the sequential control component 91 is turned on, the water in the neutral water tank 6 is delivered to the micro / nano bubble generator 4 through the sequential delivery pipeline 9 for secondary neutralization treatment. The advantages of adopting a sequential system design are that by returning the substandard water in the neutral water tank 6 to the micro-nano bubble generator 4 for secondary neutralization, the sequential system can effectively make up for the deficiencies of a single reaction, ensuring that the pH value of the final discharged water is stable and meets the discharge requirements, avoiding environmental risks caused by substandard treatment, improving resource utilization, and reducing waste. Furthermore, this sequential system directly utilizes the existing core equipment such as the micro-nano bubble generator and reactor for secondary neutralization, eliminating the need for additional independent secondary treatment devices, thus reducing equipment procurement and installation costs. In addition, it combines a pH value tester, sequential control components, and a control system to achieve intelligent closed-loop control, enhancing the system's flexibility and adaptability.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A high-efficiency neutralization system for alkaline water in a mixing plant, characterized in that, The system includes an alkaline water tank (1), a conveying pipe (2), an air supply system (3), a micro / nano bubble generator (4), a reactor (5), and a neutral water tank (6). The alkaline water tank (1) is used to store alkaline water that has been filtered after cleaning the tank trucks at the mixing plant. One end of the conveying pipe (2) is connected to the alkaline water tank (1) and is used to convey the alkaline water in the alkaline water tank (1). The air supply system (3) is used to supply carbon dioxide to the micro / nano bubble generator (4). The inlet end of the micro / nano bubble generator (4) is connected to... The other end of the conveying pipe (2) is connected to the air inlet end, which is connected to the air supply system (3). The micro-nano bubble generator (4) is used to make the carbon dioxide conveyed by the air supply system (3) into micro-nano bubbles and mix the micro-nano bubbles with the alkaline water conveyed by the conveying pipe (2) to form a gas-liquid mixture. The micro-nano bubble generator (4) is connected to the neutral water tank (6) through a reactor (5). The reactor (5) has a reaction pipeline that contains the gas-liquid mixture and allows the alkaline water and carbon dioxide to react fully.

2. The high-efficiency alkaline water neutralization system for mixing plants according to claim 1, characterized in that: The micro-nano bubble generator (4) is configured as a single group or multiple groups; the air inlet end of each group of micro-nano bubble generator (4) is connected to at least one air inlet pipe (41), and the air inlet pipe (41) is connected to the air supply pipeline of the air supply system (3).

3. The high-efficiency alkaline water neutralization system for mixing plants according to claim 2, characterized in that: Multiple sets of micro-nano bubble generators (4) are connected in series between the conveying pipe (2) and the reactor (5). The multiple sets of micro-nano generators are connected to each other through the reactor (5). The gas supply system (3) is connected to the multiple sets of micro-nano bubble generators (4) through the air inlet pipe (41).

4. The high-efficiency neutralization system for alkaline water in a mixing plant according to claim 2, characterized in that: Multiple sets of micro-nano bubble generators (4) are connected in parallel between the conveying pipe (2) and the reactor (5), and the gas supply system (3) is connected to multiple sets of micro-nano bubble generators (4) through the air inlet pipe (41).

5. The high-efficiency neutralization system for alkaline water in a mixing plant according to any one of claims 1-4, characterized in that: The reactor (5) is configured as multiple sets of winding reaction pipes (51), which are connected in series or in parallel. The inlet of the reactor (5) is connected to the outlet of the micro-nano bubble generator (4), and the inlet of the neutral water tank (6) is connected to the outlet of the reactor (5).

6. The high-efficiency alkaline water neutralization system for mixing plants according to claim 1, characterized in that: The gas supply system (3) includes a carbon dioxide gas source, a flow valve (31) and a solenoid valve (32). The flow valve (31) and the solenoid valve (32) are connected in series on the air inlet pipe (41) between the carbon dioxide gas source and the micro-nano bubble generator (4). The flow valve (31) is used to adjust the flow rate of carbon dioxide, and the solenoid valve (32) is used to control the opening and closing of the carbon dioxide gas supply pipeline.

7. The high-efficiency neutralization system for alkaline water in a mixing plant according to any one of claims 1-4, characterized in that: The reactor (5) is a container that extends the mixing time of alkaline water and micro / nano bubbles. The interior of the container is provided with a flow channel (52) composed of bent components. The bent components are multiple sets of baffles (53) arranged inside the container. The multiple sets of baffles are arranged in an alternating manner to form a meandering flow channel (52).

8. The high-efficiency alkaline water neutralization system for mixing plants according to claim 1, characterized in that: It also includes a back pressure valve (61); the back pressure valve (61) is installed on the pipeline between the micro-nano bubble generator (4) and the reactor (5), or on the pipeline between the reactor (5) and the neutral water tank (6); the back pressure valve (61) is used to maintain the pressure in the pipeline to promote the dissolution of carbon dioxide in alkaline water; The conveying pipe (2) includes a water pump (21) and a water conveying pipeline connected together. One end of the water conveying pipeline is connected to the alkaline water tank (1), and the other end is connected to the water inlet of the micro-nano bubble generator (4). The water pump (21) is used to provide power for the conveying of alkaline water.

9. The high-efficiency neutralization system for alkaline water in a mixing plant according to claim 1, characterized in that: It also includes detection components installed in the alkaline water tank (1) and the neutral water tank (6) respectively. The detection components include a level gauge (7) and a pH meter (8). The level gauge (7) is installed in the alkaline water tank (1) or the neutral water tank (6). There are at least two pH meters (8). One pH meter (8) is installed in the alkaline water tank (1) to detect the initial pH value of the alkaline water to be transported. The other pH meter (8) is installed at the outlet of the neutral water tank (6) or the reactor (5) to detect the pH value of the water after the reaction.

10. The high-efficiency alkaline water neutralization system for mixing plants according to claim 1, characterized in that: It also includes a sequential system for secondary neutralization of water in the neutral water tank (6) that does not meet the pH value standard, and a control device electrically connected to the pH value tester (8), the flow valve (31), the solenoid valve (32) and the sequential system respectively; the sequential system includes at least one sequential delivery pipeline (9) and a sequential control component (91), the two ends of the sequential delivery pipeline (9) are respectively connected to the neutral water tank (6) and the micro-nano bubble generator (4), and the sequential control component (91) is used to control the opening and closing of the sequential delivery pipeline (9); when the sequential control component (91) is turned on, the water in the neutral water tank (6) is delivered to the micro-nano bubble generator (4) for secondary neutralization through the sequential delivery pipeline (9).

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