Autonomous rolling microbial breeding device and working method thereof

Abstract

The present invention belongs to the technical field of sewage treatment, and in particular relates to an autonomous rolling microbial breeding device and a working method thereof, wherein the autonomous rolling microbial breeding device comprises: filler spheres, which are formed by enclosing the filler in a hollow spherical shell; a metal box, which comprises a space for accommodating and restricting a plurality of filler spheres, wherein the space is provided with hollow areas at least at the bottom and the top; an aeration device, which introduces air into the space, wherein the filler spheres float on the top of the water body and move and roll under the action of the air. The present invention solves the key problems of existing fixed fillers and suspended fillers through the modular design of the filler spheres, the structured accommodation of the metal box, and the dynamic rolling mechanism driven by the aeration device, thereby improving the removal efficiency and greatly reducing the cleaning and maintenance costs. At the same time, the dynamic movement eliminates the accumulation and blockage phenomena, ensures that the running trajectory of the filler is controllable, and thereby improves the overall efficiency and stability of sewage treatment.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an autonomous rolling microorganism breeding device and a working method thereof. Background Art

[0002] In existing sewage treatment technologies, the selection and use of fillers is one of the key links, among which fixed fillers and suspended fillers are two common treatment methods.

[0003] Fixed packing is usually fixed to a specific position in the sewage treatment equipment through a frame or bracket. When the sewage flows through the surface of the packing, the biofilm-forming microorganisms degrade the ammonia nitrogen and organic pollutants in the water. However, this method has some obvious limitations. First, because the packing is fixed, the contact area and contact time between the sewage and the packing are limited. Especially when treating high-load or fast-flowing sewage, the pollutant removal efficiency is low. In addition, the microbial biofilm on the surface of the fixed packing will gradually age or fail after long-term operation. However, its fixed design makes the cleaning and replacement process very difficult, requiring downtime for maintenance and operation, which not only increases maintenance costs but may also lead to interruptions in sewage treatment.

[0004] Suspended filler is a type of filler that floats freely in sewage. It relies on the flow of sewage or the agitation of aeration equipment to move the filler in the water, thereby increasing its frequency of contact with the sewage. This approach overcomes the limited contact surface of fixed fillers to a certain extent. However, due to the lack of fixed support, suspended fillers are prone to accumulation or blockage in certain areas of the treatment equipment due to changes in water flow dynamics during long-term operation, thereby hindering the flow and circulation of sewage. This accumulation problem not only reduces sewage treatment efficiency but also causes localized uneven mixing in the treatment equipment, resulting in suboptimal pollutant removal in some areas. In addition, the movement of suspended fillers depends on the dynamics of the water flow, and uneven water flow distribution can make it difficult to control the filler's trajectory within the equipment, further affecting the uniform treatment of sewage. In summary, although suspended fillers compensate for the shortcomings of fixed fillers to a certain extent, there is still considerable room for improvement in operational stability and treatment efficiency. Summary of the Invention

[0005] The present invention provides an autonomous rolling microorganism breeding device and a working method thereof, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] Autonomous rolling microbial breeding device, including:

[0008] Filler spheres are formed by encapsulating the filler in a hollow spherical shell;

[0009] A metal box body, comprising a space for accommodating and confining the plurality of filler balls, wherein the space is provided with a hollow area at least at the top;

[0010] an aeration device for introducing air into the space;

[0011] After the autonomous rolling microorganism breeding device is immersed in water, the filler spheres float on the top of the water and move and roll under the action of the air.

[0012] Furthermore, a hollow area is also provided at the bottom of the space, and the aeration device is installed on the outside of the metal box, and introduces air into the space from the hollow area at the bottom of the space through multiple air outlet points.

[0013] Furthermore, the space is a right prism space, the space has a symmetry plane in the height direction, and the gas outlet point of the aeration device is located on the symmetry plane and / or is symmetrically arranged with respect to the symmetry plane.

[0014] Furthermore, the gas outlet points are distributed along a straight line, and the straight line includes one or multiple parallel lines.

[0015] Furthermore, the space is a cylindrical space having an axis in the height direction, and the gas outlet point of the aeration device is located on the axis and / or is symmetrically arranged about the axis.

[0016] Furthermore, the gas outlet points are distributed along a circular ring, and the circular ring includes one circle, or multiple parallel circles.

[0017] Furthermore, the metal box is divided into a plurality of interconnected subspaces by a hollow plate, and the filler spheres in each subspace are different in at least one of filler type, size range, quantity range, and structural form.

[0018] Furthermore, within a local range of the filler sphere, the connections between the hollowed-out positions are distributed in a fan-leaf shape.

[0019] A method for operating the autonomous rolling microorganism breeding device as described above comprises:

[0020] According to the device design parameters, a set number of the filler balls are placed in the metal box;

[0021] Immersing the autonomous rolling microbial breeding device in the sewage to be treated, setting the aeration device to a low power mode, and starting the aeration device;

[0022] Adjusting the power of the aeration device step by step, keeping the aeration device in continuous operation during the adjustment process, and capturing a video of the movement and tumbling of the filler balls by a camera device during the continuous operation process;

[0023] The video is decomposed into multiple frames of images, each frame of the image is analyzed, the analysis result is compared with the design index, and the final power is determined according to the comparison result.

[0024] Further, analyzing each frame of the image, comparing the analysis results with the design indicators, and determining the final power according to the comparison results, including:

[0025] Continuously acquiring two frames of images, and performing grayscale processing and normalization processing on the two frames of images;

[0026] Comparing the processed results of the two frames of the image one after another pixel by pixel to obtain the absolute difference between the corresponding pixels;

[0027] Setting a difference threshold, judging whether pixels are similar based on a comparison between the absolute difference and the difference threshold, and determining the number of similar pixels;

[0028] The ratio of the number of similar pixels to the total number of pixels is calculated, and when the ratio is within a set indicator range, the power values ​​corresponding to the two frames of the image are determined to be the final power.

[0029] The technical solution of the present invention can achieve the following technical effects:

[0030] The autonomous rolling microbial breeding device in the present invention effectively solves the key problems of existing fixed fillers and suspended fillers through the modular design of filler spheres, the structured accommodation of the metal box, and the dynamic rolling mechanism driven by the aeration device, significantly improves the removal efficiency, and greatly reduces the cleaning and maintenance costs. At the same time, it eliminates accumulation and blockage through dynamic movement, ensures that the running trajectory of the filler is controllable, and thus improves the overall efficiency and stability of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of the bottom structure of the autonomous rolling microbial breeding device corresponding to the right prism space;

[0033] Figure 2for Figure 1 Schematic diagram of the top structure of the autonomous rolling microbial breeding device;

[0034] Figure 3 Schematic diagram of the placement of the filler spheres relative to the metal box;

[0035] Figure 4 A structural diagram of an aeration device;

[0036] Figure 5 Schematic diagram of the effect of airflow on the filler spheres in the right prism space;

[0037] Figure 6 Schematic diagram of the bottom structure of the autonomous rolling microbial breeding device corresponding to the cylindrical space;

[0038] Figure 7 for Figure 6 Schematic diagram of the top structure of the autonomous rolling microbial breeding device;

[0039] Figure 8 is another structural schematic diagram of an aeration device;

[0040] Figure 9 This is a schematic diagram of the installation of the hollow plate;

[0041] Figure 10 This is a schematic diagram showing that the filler spheres are partially fan-shaped.

[0042] Figure numerals: 1. Filler sphere; 11. Hollow position; 12. Connection; 2. Metal box; 21. Side wall; 22. Top plate; 23. Bottom plate; 24. Symmetry plane; 25. Hollow plate; 26. Subspace; 3. Aeration device; 31. Air inlet; 32. Air outlet point; 33. Tube body; 4. Airflow. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Example 1

[0046] like Figures 1 to 10As shown, an autonomous rolling microorganism breeding device comprises:

[0047] The filler spheres 1 are formed by enclosing the filler in a hollow spherical shell; the metal box 2 includes a space for accommodating and confining multiple filler spheres 1, and the space is provided with a hollow area at least at the top; the aeration device 3 introduces air into the space; after the autonomous rolling microbial breeding device is immersed in the water body, the filler spheres 1 float on the top of the water body and move and roll under the action of the air.

[0048] The filler sphere 1 used in the present invention has a hollow spherical shell design, which not only greatly increases the specific surface area, but also allows sewage to pass freely, thereby improving the contact efficiency between the filler and the sewage; Figure 3 , showing the location of hollowed-out areas 11 on packing sphere 1. Aeration device 3 effectively draws water from outside the device into metal housing 2, while simultaneously carrying microorganisms within metal housing 2 out, accelerating the nitrification of ammonia nitrogen and COD in the water. Packing sphere 1 continuously tumbles and moves, allowing for all-around dynamic contact with the sewage, eliminating the static contact limitations of fixed packing. During the tumbling process, microbial communities evenly form biofilms, preventing localized overgrowth of fixed packing and thereby improving the removal efficiency of ammonia nitrogen and organic pollutants.

[0049] The design of the filler sphere 1 can be understood as a movable modular structure. The metal box 2 provides space to accommodate and confine the filler sphere 1. The filler sphere 1 can be easily taken out, which is convenient for cleaning and replacement. The airflow 4 of the aeration device 3 drives the filler sphere 1 to move continuously inside the device, so that the filler surface maintains a good dynamic clean state due to rolling, reducing the impact of film aging and reducing the need for frequent cleaning and replacement. Moreover, since the filler sphere 1 is easy to take out and replace, there is no need for long-term shutdown, which significantly reduces the difficulty and cost of maintenance while ensuring the continuity of the sewage treatment process.

[0050] The aeration device 3 forms a uniform distribution of water flow and bubbles, fundamentally solving the problems of accumulation and clogging of the filler spheres 1 that may occur during operation. The aeration device 3 drives the filler spheres 1 to roll and move freely in the box through the uniform injection of air, avoiding the situation where the suspended filler is aggregated due to the turbulence of the water flow, thereby maintaining the smoothness and efficiency of the system operation. The dynamic rolling of the filler spheres 1 can be automatically dispersed under the impetus of the water flow, ensuring that the filler is evenly distributed in the box and the sewage treatment is more comprehensive and efficient. The airflow 4 generated by the aeration device 3 regularly drives the filler spheres 1 to roll and move, making the movement trajectory of the filler spheres 1 relatively predictable, ensuring the uniform distribution of oxygen and pollutants in the sewage.

[0051] The autonomous rolling microbial breeding device in this embodiment effectively solves the key problems of existing fixed fillers and suspended fillers through the modular design of the filler spheres 1, the structured accommodation of the metal box 2, and the dynamic rolling mechanism driven by the aeration device 3, significantly improves the removal efficiency, and greatly reduces the cleaning and maintenance costs. At the same time, it eliminates accumulation and blockage through dynamic movement, ensures that the running trajectory of the filler is controllable, and thereby improves the overall efficiency and stability of sewage treatment.

[0052] During implementation, the installation of the aeration device 3 can be achieved inside the metal box 2. Specifically, the aeration device 3 is installed inside the metal box 2 and at the bottom, so that the introduced air can move from bottom to top, thereby achieving the technical effect required in this embodiment. In this way, only the top plate 22 of the metal box 2 is provided with a hollow area, or both the top plate and the bottom plate are provided with hollow areas.

[0053] As another better way, Figure 1 and 3 As shown, a hollowed-out area is also provided at the bottom of the space. Aeration device 3 is mounted outside the metal housing 2 and introduces air into the space from the hollowed-out area at the bottom of the space through multiple air outlet points 32. The rational arrangement of the external aeration device 3 allows for more flexible adjustment of the distribution of the airflow 4, ensuring that different areas within the metal housing 2 are evenly affected by the airflow 4. Furthermore, the external placement of the aeration device 3 facilitates installation and maintenance of the aeration device 3, facilitating regular maintenance and cleaning, reducing downtime due to internal blockages, and further improving operational efficiency and reliability.

[0054] When considering the activity space of the filler balls 1, the removal of the aeration device 3 increases the effective activity space in the box, allowing the filler balls 1 to roll and move more freely, which can reduce the material usage of the metal box 2 to a certain extent and reduce the size of the metal box 2 under the same treatment effect.

[0055] As an optimized method, the space is a right prism space, the space has a symmetry plane 24 in the height direction, and the gas outlet point 32 of the aeration device 3 is located on the symmetry plane 24 and / or is symmetrically arranged about the symmetry plane 24. Figures 1-3 In the figure, the right prism state of the space is shown, and a specific right quadrangular prism is taken as an example, including side walls 21, a top plate 22 and a bottom plate 23; in this preferred embodiment, the prism shape is regular and symmetrical, which is convenient for the combination and arrangement of different unit modules, and large-scale sewage treatment can be achieved in parallel or series.

[0056] In this preferred embodiment, by arranging the outlet points 32 of the aeration device 3 on the height-direction symmetric plane 24 of the right prism-shaped space and / or symmetrically distributing the outlet points 32 about the symmetric plane 24, the uniformity of the aeration airflow 4 can be further improved, so that the airflow 4 covers the entire treatment space. Figure 1 and Figure 4 , showing the location of the symmetry plane 24, and the figure shows that some of the air outlet points 32 are distributed on the symmetry plane 24, and some of the air outlet points 32 are symmetrically arranged about the symmetry plane 24. In the above embodiment, the regularity and symmetry of the right prisms combined with the symmetrically arranged aeration design ensure the balanced distribution of the airflow 4 and significantly reduce the phenomenon of local insufficient or excessive aeration. The symmetrical distribution of the airflow 4 not only optimizes the movement trajectory of the filler spheres 1, but also guides the filler spheres 1 to achieve more regular rolling and movement under the action of the airflow 4, avoiding the problem of disordered movement or accumulation of the filler, and maximizing its efficiency in dynamic contact with sewage.

[0057] like Figure 5 As shown, the airflow 4 flows out from the air outlet 32 ​​of the aeration device 3 and enters the distribution form of the right prism space relatively evenly. The filler spheres 1 in a floating state will be displaced and rotated within a certain range under the action of the airflow 4 shown in the figure; the displacement here is related to the size of the space, the density of the filler spheres 1 floating on the top of the water body, and the aeration power; for example, the filler spheres 1 in a denser state often have smaller displacement and rotation angles, and vice versa, larger displacement and rotation angles are obtained; for another example, the filler spheres 1 under a greater aeration power often have a greater displacement and rotation angle, and vice versa, smaller displacement and rotation angles are obtained; the specific situation needs to be comprehensively set according to the actual application scenario, equipment size, filler sphere 1 size and aeration power.

[0058] Furthermore, the symmetrical aeration design guides the bubbles and wastewater into a highly regular circulation, making the gas-liquid mixing within the prismatic space more efficient and stable. This ensures overall mixing of the wastewater, avoiding the problem of insufficient oxygen concentration in localized areas. Furthermore, the symmetrical distribution of bubbles effectively prolongs the gas-liquid contact time, optimizes oxygen transfer efficiency, and achieves a more uniform and efficient pollutant removal process.

[0059] As a specific preference of this method, the gas outlet points 32 are distributed along a straight line, which may include one straight line or multiple parallel straight lines. Figure 4 As shown, a specific embodiment in which the right prism is a quadrangular prism is shown, and in this embodiment, the gas outlet points 32 of the aeration device 3 are arranged along three parallel straight lines, and the distribution of each straight line is achieved by restricting the gas outlet points 32 by the tube body 33; in this structural form, the gas outlet points 32 on the middle tube body 33 are located on the symmetry plane 24, and the gas outlet points 32 on the tube bodies 33 on both sides are symmetrically arranged about the symmetry plane 24.

[0060] As another form of space, such as Figures 6-8 As shown, the space is a cylindrical space having an axis in the height direction, and the gas outlet points 32 of the aeration device 3 are located on the axis and / or are symmetrically arranged about the axis. Specifically, the gas outlet points 32 are distributed along a circular ring, which includes one circle or multiple parallel circles.

[0061] In the preferred embodiment described above, by designing the space into a cylindrical shape and arranging the gas outlet 32 ​​along the axis, this solution leverages the regular symmetry of the cylinder and the multi-layered design of the rings to significantly improve gas-liquid mixing efficiency, the dynamic movement of the filler spheres 1, and the transfer and utilization rate of oxygen. Single- or multi-ring designs provide flexibility to meet diverse treatment needs, optimizing the performance of the sewage treatment system. Simultaneously, by simplifying the structure and improving maintenance ease, it further reduces manufacturing and operating costs, making it suitable for a wide range of sewage treatment scenarios.

[0062] During implementation, multiple gas outlet points 32 of the aeration device 3 can be supplied with gas through the same air inlet 31, thereby further reducing equipment costs; of course, when it is necessary to achieve aeration differences in different areas, air can also be supplied through different air inlets 31.

[0063] As a preferred embodiment of the above, Figure 9 As shown, the metal box 2 is divided into a plurality of interconnected subspaces 26 by a hollow plate 25 , and the filler spheres 1 in each subspace 26 are different in at least one of the filler type, size range, quantity range, and structural form.

[0064] In this preferred embodiment, the hollow plate 25 is used to separate subspaces 26. The parameters of the filler spheres 1 can be designed based on the different pollutant distribution characteristics and concentration distribution differences in the sewage. Filler spheres 1 with different functionalities are arranged in different subspaces 26, allowing the growth of a variety of microorganisms through multiple subspaces 26. During implementation, the parameters of the filler spheres 1 in different subspaces 26 can be flexibly designed, and the density, size, and structure of the filler within the subspaces 26 can be adjusted to meet the sewage treatment needs of different scenarios. Figure 9 The embodiment shown in the figure, in which two hollow plates 25 are divided into three subspaces 26, is only an example. This embodiment and other embodiments in which the number of hollow plates 25 is used are also within the scope of protection of the present invention.

[0065] Considering the movement form, the hollow plate 25 not only separates the subspaces 26, but also ensures the connectivity between the subspaces 26. Sewage and airflow 4 can flow freely between the subspaces 26, promoting the orderly movement of the filler spheres 1. By separating different subspaces 26, the movement range of the filler spheres 1 is constrained, avoiding the problem of airflow 4 and water flow blockage caused by filler accumulation in a large range.

[0066] As a preferred embodiment of the above, Figure 10 As shown, within the local area of ​​the packing sphere 1, the connections 12 between the hollowed-out locations 11 are distributed in a fan-leaf-like pattern. The fan-leaf-shaped connections 12 can effectively guide the flow of sewage during the movement of the packing sphere 1, increasing fluid disturbance near the surface of the sphere. By guiding and disturbing the water flow, fluid stagnation is avoided, and the dynamic mixing effect of sewage near the packing is enhanced, which helps to diffuse and degrade pollutants. The fan-leaf-shaped connections 12 produce a local vortex effect when the packing sphere 1 rolls, enhancing the flushing effect of the water flow. At the same time, under the action of the airflow 4 and the water flow, the movement of the packing sphere 1 is more flexible.

[0067] By introducing a fan-shaped distribution design at the local hollow connection 12 of the packing sphere 1, the fluid dynamic characteristics, microbial biofilm efficiency, self-cleaning ability and dynamic movement effect of the packing are significantly optimized; not only is the mixing uniformity and oxygen transfer efficiency of the sewage enhanced, but the structural stability and adaptability of the packing sphere 1 are also improved, while the energy consumption and maintenance costs of the system are reduced, making it suitable for a variety of sewage treatment scenarios.

[0068] Example 2

[0069] A method for operating the autonomous rolling microorganism breeding device according to the first embodiment includes:

[0070] S1: According to the design parameters of the device, a set number of filler balls are placed in the metal box. In this step, the total number of filler balls must match the design capacity of the device to avoid excessive filler causing accumulation or too little filler reducing treatment efficiency.

[0071] S2: Immerse the autonomous rolling microbial breeding device in the sewage to be treated, set the aeration device to low power mode, and start the aeration device. During the implementation process, before placing the device, check whether the hollow area on the top of the box is unobstructed to ensure that sewage can freely flow into and out of the metal box. After placement, ensure that the device is completely submerged so that the filler balls can float in the sewage. By operating at low power, the filler balls are prevented from violent movement or collision due to excessive initial airflow, providing a mild initial condition to facilitate subsequent step-by-step debugging.

[0072] S3: Gradually adjust the power of the aeration device, keeping it operating continuously during the adjustment process. During this process, use a camera to capture a video of the movement and tumbling of the filler balls. Gradually increase the power of the aeration device according to the design power range of the device. For example, set the initial power to 10% and increase it by 5% or 10% each time. After each adjustment, maintain a constant power for a period of time, such as 1 to 2 minutes, to ensure that the filler balls reach a stable dynamic motion state. During the step-by-step debugging process, the aeration device always remains in operation to ensure that the movement of the filler balls is continuous and observable.

[0073] During implementation, the camera equipment can use a high-frame rate camera, preferably fixed on the top of the metal box to ensure that the movement, rolling and overall distribution of the filler balls can be clearly captured. At each power level, more detailed independent videos can be taken for subsequent analysis to record the dynamic changes of the filler balls under different power conditions.

[0074] S4: Decompose the video into multiple frames, analyze each frame, compare the analysis results with the design indicators, and determine the final power based on the comparison results.

[0075] In this step, video processing software, such as OpenCV, MATLAB, etc., can be used to decompose the video into single-frame images. As a specific method for analyzing each frame of the image, the position, direction and movement trajectory of the filler spheres are identified in each frame of the image; specifically, by tracking the center position of the filler spheres, their displacement range in each frame of the image is calculated, by analyzing the changes in the hollow structure of the filler spheres, their rotation angle is calculated, and the displacement rate of the filler spheres in consecutive frames is analyzed based on the time difference between frames and the displacement range; based on this method, the design indicators can set corresponding indicator values ​​for the displacement range, rotation angle and speed change, so as to perform comparison and power selection. Of course, this analysis method is only an example of a specific method, and is not intended to limit the scope of protection of this application.

[0076] This preferred solution can not only intuitively and efficiently complete the debugging of the dynamic performance of the packing spheres, but also provide a scientific power optimization basis for the aeration device through precise data analysis, thereby significantly improving the dynamic biofilm formation, self-cleaning and gas-liquid mixing effects of the packing spheres, while reducing operating energy consumption and enhancing the stability and adaptability of the device.

[0077] As an optimization method for analyzing each frame of image, in this preferred solution, each frame of image is analyzed, the analysis results are compared with the design indicators, and the final power is determined based on the comparison results, including:

[0078] S41: continuously acquiring two frames of images, and gray-scaling and normalizing the two frames of images, thereby reducing computational complexity and reducing external interference. Post-gray-scaling and normalizing single-channel data processing can reduce computational resource consumption;

[0079] S42: Compare the processing results of the two frames of images pixel by pixel to obtain the absolute difference of the corresponding pixels; calculate the degree of change of each pixel point in the two frames of images through pixel by pixel comparison to reflect the movement state of the filler spheres and the state of the bubbles, etc. Specifically:

[0080] D(i,j)=∣I1(i,j)−I2(i,j)∣;

[0081] Where I1(i,j) and I2(i,j) are the grayscale values ​​of pixel positions (i,j) and (i,j) in frame 1 and frame 2, respectively. If the absolute difference D(i,j) is small, it often means that the corresponding pixel has not changed much in the two frames, which may be a state of stillness or slow movement. If the difference D(i,j) is large, it means that the corresponding pixel has changed significantly, which may be due to the rapid movement of the filler spheres.

[0082] S43: Setting a difference threshold. Determine whether pixels are similar based on the comparison of the absolute difference with the difference threshold, and determine the number of similar pixels. The smaller the absolute difference, the more similar they are. In this step, the entire image is traversed pixel by pixel, and the number of similar pixels that meet the conditions is counted. The difference threshold can be dynamically adjusted according to actual sewage treatment needs to control sensitivity to subtle changes.

[0083] S44: Calculate the ratio of the number of similar pixels to the total number of pixels. When the ratio is within the range of the set index, determine that the power value corresponding to the two frames of image is the final power. In step S44, set the range of the index to an appropriate range between the maximum value and the minimum value. By selecting within this range, it can be ensured that the final power enables the filler spheres to obtain a more appropriate motion state, and also obtain a more appropriate amount of gas.

[0084] In this preferred embodiment, the image not only reflects the situation of the packing spheres, but also appropriately reflects the situation of the bubbles. By comparing each pixel one by one, a relatively simple processing process can be obtained. Dynamic threshold adjustment and regional analysis further optimize the calculation efficiency. By comparing the ratio and range of similar pixels, the aeration power is accurately adjusted to ensure the optimal state of packing movement and gas-liquid mixing.

[0085] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Working method of the autonomous rolling microbial breeding device, the autonomous rolling microbial breeding device comprising: Filler spheres are formed by encapsulating the filler in a hollow spherical shell; The metal box comprises a space for accommodating and confining the plurality of filler balls, wherein the space is provided with a hollow area at least at the top; an aeration device for introducing air into the space; After the autonomous rolling microorganism breeding device is immersed in water, the filler spheres float on the top of the water and move and roll under the action of the air; The working method comprises: According to the device design parameters, a set number of the filler balls are placed in the metal box; Immersing the autonomous rolling microbial breeding device in the sewage to be treated, setting the aeration device to a low power mode, and starting the aeration device; Adjusting the power of the aeration device step by step, keeping the aeration device in continuous operation during the adjustment process, and capturing a video of the movement and tumbling of the filler balls by a camera device during the continuous operation process; Decomposing the video into multiple frames of images, analyzing each frame of the image, comparing the analysis results with the design indicators, and determining the final power according to the comparison results, including: Continuously acquiring two frames of images, and performing grayscale processing and normalization processing on the two frames of images; Comparing the processed results of the two frames of the image one after another pixel by pixel to obtain the absolute difference between the corresponding pixels; Setting a difference threshold, judging whether pixels are similar based on a comparison between the absolute difference and the difference threshold, and determining the number of similar pixels; The ratio of the number of similar pixels to the total number of pixels is calculated, and when the ratio is within a set indicator range, the power values ​​corresponding to the two frames of the image are determined to be the final power.

2. The working method of the autonomous rolling microorganism breeding device according to claim 1, characterized in that: A hollow area is also provided at the bottom of the space. The aeration device is installed on the outside of the metal box and introduces air into the space from the hollow area at the bottom of the space through multiple air outlet points.

3. The working method of the autonomous rolling microorganism breeding device according to claim 2, characterized in that: The space is a right prism space, and the space has a symmetry plane in the height direction. The gas outlet point of the aeration device is located on the symmetry plane and / or is symmetrically arranged with respect to the symmetry plane.

4. The working method of the autonomous rolling microorganism breeding device according to claim 3, characterized in that: The gas outlet points are distributed along a straight line, and the straight line includes one or multiple parallel lines.

5. The working method of the autonomous rolling microorganism breeding device according to claim 2, characterized in that: The space is a cylindrical space having an axis in the height direction. The gas outlet point of the aeration device is located on the axis and / or is symmetrically arranged about the axis.

6. The working method of the autonomous rolling microorganism breeding device according to claim 5, characterized in that: The gas outlet points are distributed along a circular ring, and the circular ring includes one circle or multiple parallel circles.

7. The working method of the autonomous rolling microorganism breeding device according to claim 1, characterized in that: The metal box is divided into a plurality of interconnected subspaces by a hollow plate, and the filler spheres in each subspace are different in at least one of the filler type, size range, quantity range, and structural form.

8. The working method of the autonomous rolling microorganism breeding device according to claim 1, characterized in that: In a local range of the filler sphere, the connections between the hollow positions are distributed in a fan-leaf shape.

9. The operating method of the autonomous rolling microbial breeding device, the autonomous rolling microbial breeding device comprising: Filler spheres are formed by encapsulating the filler in a hollow spherical shell; The metal box comprises a space for accommodating and confining the plurality of filler balls, wherein the space is provided with a hollow area at least at the top; an aeration device for introducing air into the space; After the autonomous rolling microorganism breeding device is immersed in water, the filler spheres float on the top of the water and move and roll under the action of the air; The working method comprises: According to the device design parameters, a set number of the filler balls are placed in the metal box; Immersing the autonomous rolling microbial breeding device in the sewage to be treated, setting the aeration device to a low power mode, and starting the aeration device; Adjusting the power of the aeration device step by step, keeping the aeration device in continuous operation during the adjustment process, and capturing a video of the movement and tumbling of the filler balls by a camera device during the continuous operation process; Decomposing the video into multiple frames of images, analyzing each frame of the image, comparing the analysis results with the design indicators, and determining the final power according to the comparison results, including: By tracking the center position of the filler sphere, its displacement range in each frame of the image is calculated; by analyzing the changes in the hollow structure of the filler sphere, the rotation angle is calculated; and the displacement rate of the filler sphere in consecutive frames is analyzed based on the time difference and displacement range between frames; The design indicators set corresponding indicator values ​​for displacement range, rotation angle and speed change, so as to perform comparison and power selection.

10. The working method of the autonomous rolling microorganism breeding device according to claim 9, characterized in that: A hollow area is also provided at the bottom of the space. The aeration device is installed on the outside of the metal box and introduces air into the space from the hollow area at the bottom of the space through multiple air outlet points.

11. The working method of the autonomous rolling microorganism breeding device according to claim 10, characterized in that: The space is a right prism space, and the space has a symmetry plane in the height direction. The gas outlet point of the aeration device is located on the symmetry plane and / or is symmetrically arranged with respect to the symmetry plane.

12. The working method of the autonomous rolling microorganism breeding device according to claim 11, characterized in that: The gas outlet points are distributed along a straight line, and the straight line includes one or multiple parallel lines.

13. The working method of the autonomous rolling microorganism breeding device according to claim 10, characterized in that: The space is a cylindrical space having an axis in the height direction. The gas outlet point of the aeration device is located on the axis and / or is symmetrically arranged about the axis.

14. The working method of the autonomous rolling microorganism breeding device according to claim 13, characterized in that: The gas outlet points are distributed along a circular ring, and the circular ring includes one circle or multiple parallel circles.

15. The working method of the autonomous rolling microorganism breeding device according to claim 9, characterized in that: The metal box is divided into a plurality of interconnected subspaces by a hollow plate, and the filler spheres in each subspace are different in at least one of the filler type, size range, quantity range, and structural form.

16. The working method of the autonomous rolling microorganism breeding device according to claim 9, characterized in that: In a local range of the filler sphere, the connections between the hollow positions are distributed in a fan-leaf shape.

Images