Micro-nano bubble wastewater biochemical treatment device

Abstract

The micro-nano bubble sewage biochemical treatment device disclosed by the application comprises a reaction tower, which is internally provided with a reaction cavity, wherein the bottom of the reaction tower is provided with a water inlet for inputting sewage, and the top of the reaction tower is provided with a water outlet for outputting sewage; a microbial carrier reaction bed is used for realizing microbial reaction of organic material sewage in a low-turbulence static environment; a cyclone reactor is used for driving sewage in the lower part of the accommodation cavity of the reaction tower to rotate and flow, so as to realize gravity separation according to the density of the organic matter of the sewage; a micro-nano bubble generator is used for obtaining sewage output by the reaction tower and generating micro-nano bubbles with the sewage, and the water outlet of the micro-nano bubble generator is connected with the middle part of the reaction cavity of the reaction tower and is used for outputting circulating sewage containing micro-nano bubbles towards the cyclone reactor. Through the above manner, the application can prolong the gas-liquid contact time, greatly improve the utilization rate of oxygen, make the biochemical reaction more sufficient, have high organic matter mineralization efficiency and high organic material degradation efficiency.

Description

Technical Field

[0001] This invention relates to the field of water pollution control engineering technology in the field of environmental engineering, specifically to a micro-nano bubble wastewater biochemical treatment device. Background Technology

[0002] Conventional wastewater treatment includes biochemical reaction treatment, which requires the input of oxygen to promote the degradation of organic materials by microorganisms. However, in traditional biochemical reaction treatment methods, the injected oxygen leaves the water surface after only about ten seconds after being blown into the bottom of the water. In other words, the gas-liquid contact time is extremely short, the oxygen utilization rate is low, the biochemical reaction is incomplete, and the degradation efficiency of organic materials is low. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a micro-nano bubble wastewater biochemical treatment device, which can solve the aforementioned technical problems.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a micro / nano bubble wastewater biochemical treatment device, characterized in that it comprises: a reaction tower, wherein a reaction chamber is provided inside, wherein the bottom of the reaction tower is provided with an inlet communicating with the reaction chamber and for inputting wastewater, and the top of the reaction tower is provided with an outlet communicating with the reaction chamber and for outputting wastewater; a microbial carrier reaction bed, disposed in the upper part of the receiving chamber of the reaction tower, for realizing the microbial reaction of organic material wastewater in a low-turbulence static environment; and a cyclone reactor, disposed in the lower part of the receiving chamber of the reaction tower, for driving the receiving chamber of the reaction tower. The wastewater in the lower part of the chamber rotates and flows to achieve gravity separation based on the density of organic matter in the wastewater. The inlet of the micro-nano bubble generator is connected to the outlet at the bottom of the reaction chamber of the reaction tower through a first pipe. It is used to obtain the wastewater output from the reaction tower and generate micro-nano bubbles with it. Its outlet is connected to the reaction chamber of the reaction tower through a second pipe. It is used to output circulating wastewater containing micro-nano bubbles to the cyclone reactor to achieve mineralization and degradation in a highly turbulent environment. The direction of the circulating wastewater output by the micro-nano bubble generator is opposite to the rotation direction of the wastewater driven by the cyclone reactor.

[0007] Furthermore, the micro / nano bubble generator includes a gas-liquid mixing chamber connected to the first tube, a Venturi cutting chamber connected to the gas-liquid mixing chamber, and a diffuser chamber connected to the Venturi cutting chamber, wherein the gas-liquid mixing chamber is provided with an inlet for inputting compressed gas, and the diffuser chamber is connected to the second tube.

[0008] Furthermore, a circulation pump is provided in the first pipe body to pump the sewage in the lower part of the containment cavity of the reaction tower to the gas-liquid mixing cavity, wherein the cross-sectional area of ​​the Venturi cutting cavity is smaller than the cross-sectional area of ​​the gas-liquid mixing cavity and the diffuser cavity.

[0009] Furthermore, the cyclone reactor includes a water pump and a plurality of water spray pipes disposed at the lower part of the receiving cavity of the reaction tower, wherein the water pump inlet is located at the bottom of the receiving cavity of the reaction tower, the water pump outlet is connected to the plurality of water spray pipes, and the plurality of water spray pipes are arranged in a spiral manner around the water pump.

[0010] Furthermore, the bottom wall of the reaction tower is provided with a plurality of injection ports at intervals, wherein the plurality of injection ports correspond to the plurality of water spray pipes and are arranged in a spiral manner on the bottom wall of the reaction tower, and the plurality of injection ports are connected to the second pipe through a plurality of third pipes, so that sewage tangent to the water outlet direction of the plurality of water spray pipes is injected from the plurality of injection ports into the receiving cavity of the reaction tower.

[0011] Furthermore, the microbial carrier reaction bed includes a microbial carrier, wherein the microbial carrier divides the upper part of the containment cavity of the reaction tower into an upper space and a lower space, the water outlet is connected to the upper space, and a filter plate for filtering sludge is provided in the lower space above the water pump.

[0012] Furthermore, the upper space is also provided with a packing support plate, which is filled with steel packing, ceramic packing, plastic packing, semi-soft packing or fiber packing.

[0013] Furthermore, the top of the reaction tower is also provided with a foam collection tank communicating with the upper space and an overflow hole communicating with the foam collection tank.

[0014] Furthermore, a micro-nano gas flow regulating valve is provided at the connection between the second tube and the reaction tower.

[0015] (III) Beneficial Effects

[0016] Compared with existing technologies, this invention provides a micro-nano bubble wastewater biochemical treatment device with the following beneficial effects: The micro-nano bubble wastewater biochemical treatment device disclosed in this invention includes: a reaction tower with a reaction chamber inside, wherein the bottom of the reaction tower has an inlet for inputting wastewater and the top of the reaction tower has an outlet for outputting wastewater; a microbial carrier reaction bed for realizing the microbial reaction of organic wastewater in a low-turbulence static environment; a cyclone reactor for driving the wastewater in the lower part of the reaction tower's receiving chamber to rotate and flow, so as to perform gravity separation according to the density of organic matter in the wastewater; and a micro-nano bubble generator for acquiring the wastewater output from the reaction tower and generating micro-nano bubbles with it, the outlet of which is connected to the middle of the reaction chamber of the reaction tower for outputting circulating wastewater containing micro-nano bubbles to the cyclone reactor. Through the above methods, this invention can extend the gas-liquid contact time, greatly improve the oxygen utilization rate, make the biochemical reaction more complete, and achieve high organic matter mineralization efficiency and high organic material degradation efficiency. Attached Figure Description

[0017] Figure 1 This is a first structural schematic diagram of the micro-nano bubble wastewater biochemical treatment device of the present invention;

[0018] Figure 2 This is a schematic diagram of the second structure of the micro-nano bubble wastewater biochemical treatment device of the present invention;

[0019] Figure 3 This is a schematic diagram of the micro / nano bubble generator of the present invention;

[0020] Figure 4 This is a schematic diagram of the cyclone reactor of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1-4 The micro-nano bubble wastewater biochemical treatment device disclosed in this invention includes a reaction tower 10, a microbial carrier reaction bed 11, a cyclone reactor 12, and a micro-nano bubble generator 13.

[0023] The reaction tower 10 is equipped with a reaction chamber. The bottom of the reaction tower 10 is equipped with an inlet 101 that communicates with the reaction chamber and is used for inputting wastewater, and the top of the reaction tower 10 is equipped with an outlet 102 that communicates with the reaction chamber and is used for outputting wastewater.

[0024] The microbial carrier reaction bed 11 is located at the top of the containment cavity of the reaction tower 10, and is used to realize the microbial reaction of organic wastewater in a low-turbulence static environment, thereby degrading organic materials.

[0025] The cyclone reactor 12 is located at the lower part of the containment chamber of the reaction tower 10. It is used to drive the wastewater in the lower part of the containment chamber of the reaction tower 10 to rotate and flow, so as to separate the organic matter in the wastewater by gravity according to its density. In other words, the cyclone reactor 12 can drive the water flow to achieve centrifugal motion, thereby achieving the separation of organic matter in different sealed states. That is to say, the wastewater in the lower part of the containment chamber of the reaction tower 10 is in a highly turbulent environment.

[0026] The inlet of the micro / nano bubble generator 13 is connected to the outlet at the bottom of the reaction chamber of the reaction tower 10 via a first pipe 14. This outlet is used to collect the wastewater output from the reaction tower 10 and generate micro / nano bubbles from it. The outlet of the micro / nano bubble generator 13 is connected to the reaction chamber of the reaction tower 10 via a second pipe 15. This outlet is used to output circulating wastewater containing micro / nano bubbles to the vortex reactor 12, enabling mineralization and degradation in a highly turbulent environment. In other words, the micro / nano bubble generator 13 generates circulating water containing micro / nano bubbles from the wastewater output from the reaction tower 10 and re-injects it into the reaction tower 10 for repeated reactions.

[0027] In this embodiment, the direction of the circulating sewage output by the micro-nano bubble generator 13 is opposite to the rotation direction of the sewage driven by the cyclone reactor 12. This causes the injected circulating sewage to collide with the rotating sewage in a countercurrent, resulting in more intense movement of water molecules and better sewage treatment effect.

[0028] Preferably, the micro / nano bubble generator 13 includes a gas-liquid mixing chamber 131 connected to the first tube 14, a venturi cutting chamber 132 connected to the gas-liquid mixing chamber 131, and a diffuser chamber 133 connected to the venturi cutting chamber 132. The gas-liquid mixing chamber 131 is provided with an air inlet 1311 for inputting compressed gas, and the diffuser chamber 133 is connected to the second tube 15.

[0029] Furthermore, a circulation pump 141 is provided in the first pipe body 14 to pump the sewage from the lower part of the receiving cavity of the reaction tower 10 to the gas-liquid mixing chamber 131. It should be understood that the circulation pump 141 can inject the sewage output from the reaction tower 10 into the gas-liquid mixing chamber 131 at a certain pressure.

[0030] Preferably, the cross-sectional area of ​​the Venturi cutting cavity 132 is smaller than that of the gas-liquid mixing cavity 131 and the diffuser cavity 133. It should be understood that the Venturi cutting cavity 132 is provided with a cutting structure for cutting wastewater and gas to generate bubbles, and the cutting structure may specifically include multiple spikes of different lengths, multiple blades with concave and convex shapes of different sizes, irregularly arranged long thin iron wires, and other cutting structures.

[0031] It should be understood that after the sewage and compressed gas are mixed in the gas-liquid mixing chamber 131, they enter the Venturi cutting chamber 132 for cutting and finally flow into the diffuser chamber 133. In the diffuser chamber 133, the air bubbles are in full contact with the sewage, that is, the oxygen contained in the air bubbles is repeatedly in contact with the sewage.

[0032] In this embodiment, the cyclone reactor 12 includes a water pump 121 and multiple water spray pipes 122 disposed at the lower part of the receiving cavity of the reaction tower 10. The inlet of the water pump 121 is located at the bottom of the receiving cavity of the reaction tower 10, and the outlet of the water pump 121 is connected to the multiple water spray pipes 122. The multiple water spray pipes 122 are arranged in a spiral around the water pump 121, so that the sewage sprayed from the cyclone reactor 12 is sprayed in a spiral manner, making the driving force of the sewage in the receiving cavity of the reaction vessel 10 more uniform, the water flow rate more uniform, and the separation effect better.

[0033] Furthermore, the bottom wall of the reaction tower 10 is provided with multiple injection ports at intervals, and the multiple injection ports are all connected to the lower part of the receiving cavity. The multiple injection ports correspond to multiple water spray pipes 121 and are arranged in a spiral manner on the bottom wall of the reaction tower 10.

[0034] Furthermore, multiple injection ports are connected to the second pipe 15 through multiple third pipes, so that the wastewater containing micro-nano bubbles output from the micro-nano bubble generator 13 enters the multiple third pipes through the second pipe 15, so that wastewater tangential to the water outlet direction of the multiple spray pipes 122 is injected into the containment cavity of the reaction tower 10 from the multiple injection ports.

[0035] In this embodiment, the microbial carrier reaction bed 11 includes a microbial carrier. It should be understood that the microbial carrier is filled in the upper part of the containment cavity of the reaction tower 10, and the microbial carrier can carry out biochemical reactions on wastewater to degrade organic materials.

[0036] Preferably, the microbial carrier divides the upper part of the containment cavity of the reaction tower 10 into an upper space and a lower space. The outlet 102 is connected to the upper space, and a filter plate is installed in the lower space above the water pump 121 for filtering sludge. Impurities are filtered through the filter plate. That is, the water below the filter plate is in vigorous motion, while the water above the filter plate is filtered and flows calmly into the microbial carrier to carry out biochemical reactions.

[0037] Furthermore, the upper space is also equipped with a packing support plate, which is filled with steel packing, ceramic packing, plastic packing, semi-soft packing or fiber packing.

[0038] Furthermore, the top of the reaction tower 10 is also provided with a foam collection tank 103 communicating with the upper space and an overflow hole 104 communicating with the foam collection tank 103.

[0039] Furthermore, a micro-nano gas flow regulating valve is provided at the connection between the second pipe 15 and the reaction tower 10 to regulate the amount of circulating water containing micro-nano bubbles entering the reaction tower 10.

[0040] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micro-nano bubble sewage biochemical treatment device, characterized in that, The application relates to a sewage treatment device, which comprises the following parts: a reaction tower, which is internally provided with a reaction cavity, wherein the bottom of the reaction tower is provided with a water inlet for inputting sewage and communicating with the reaction cavity, and the top of the reaction tower is provided with a water outlet for outputting sewage and communicating with the reaction cavity; a microbial carrier reaction bed, which is arranged at the upper part of the containing cavity of the reaction tower and is used for realizing microbial reaction of organic material sewage in a low-turbulence static environment; a cyclone reactor, which is arranged at the lower part of the containing cavity of the reaction tower and is used for driving the sewage at the lower part of the containing cavity of the reaction tower to rotate and flow so as to realize gravity separation according to the density of the organic matter of the sewage; a micro-nano bubble generator, which is connected with the outlet at the bottom of the reaction cavity of the reaction tower through a first pipe body, is used for obtaining the sewage output by the reaction tower and generating micro-nano bubbles with the sewage, and is connected with the reaction cavity of the reaction tower through a second pipe body, and is used for outputting circulating sewage containing micro-nano bubbles to the cyclone reactor so as to realize mineralization degradation in a high-turbulence environment; wherein the direction of the circulating sewage output by the micro-nano bubble generator is opposite to the rotating direction of the sewage driven by the cyclone reactor; the micro-nano bubble generator comprises a gas-liquid mixing cavity communicating with the first pipe body, a Venturi cutting cavity communicating with the gas-liquid mixing cavity and an expansion cavity communicating with the Venturi cutting cavity, wherein the gas-liquid mixing cavity is provided with an air inlet for inputting compressed gas, and the expansion cavity communicates with the second pipe body; a circulating pump is arranged in the first pipe body, so that the sewage at the lower part of the containing cavity of the reaction tower is pumped into the gas-liquid mixing cavity through the circulating pump, wherein the cross-sectional area of the Venturi cutting cavity is smaller than that of the gas-liquid mixing cavity and the expansion cavity; the cyclone reactor comprises a water pump arranged at the lower part of the containing cavity of the reaction tower and a plurality of water injection pipes, wherein the water inlet of the water pump is located at the bottom of the containing cavity of the reaction tower, the water outlets of the water pump communicate with the plurality of water injection pipes, and the plurality of water injection pipes are arranged in a spiral manner outside the water pump; a plurality of injection ports are arranged outside the bottom wall of the reaction tower in a spaced manner, wherein the plurality of injection ports correspond to the plurality of water injection pipes and are arranged in a spiral manner on the bottom wall of the reaction tower, and the plurality of injection ports communicate with the second pipe body through a plurality of third pipe bodies, so that the sewage which is tangent to the water outlet direction of the plurality of water injection pipes is injected into the containing cavity of the reaction tower from the plurality of injection ports. 2.The micro-nano bubble sewage biochemical treatment device according to claim 1, characterized in that, the microbial carrier reaction bed comprises a microbial carrier, wherein the microbial carrier divides the upper part of the containing cavity of the reaction tower into an upper space and a lower space, the water outlet communicates with the upper space, and a filter plate for filtering sludge is arranged in the lower space above the water pump. 3.The micro-nano bubble sewage biochemical treatment device according to claim 2, characterized in that, the upper space is further provided with a filler support plate, and the filler support plate is filled with steel filler, ceramic filler, plastic filler, semi-soft filler or fiber filler.

4. The micro-nano bubble sewage biochemical treatment device according to claim 3, characterized in that, the top of the reaction tower is further provided with a foam collecting groove communicating with the upper space and an overflow hole communicating with the foam collecting groove.

5. The micro-nano bubble sewage biochemical treatment device according to claim 4, characterized in that, The second pipe body is provided with a micro-nano air quantity adjusting valve at the connection with the reaction tower.

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