Livestock breeding wastewater treatment device based on biodegradation treatment

Abstract

The invention relates to the technical field of sewage treatment, in particular to a livestock breeding wastewater treatment device based on biodegradation treatment.The livestock breeding wastewater treatment device comprises a reaction tank, a water storage tank is arranged above the reaction tank, and a water inlet is formed in the top of the water storage tank; a plurality of conical coamings are arranged in the reservoir in a sleeving manner, a plurality of drainage pipes are arranged in the center of the inner wall of the reservoir, a plurality of nozzles are arranged on the inner wall of the reaction tank, and a plurality of layers of separation interfaces are formed in the limited reservoir capacity, so that the contact area between wastewater and the coamings is remarkably increased; grease and suspended solids can fully act on the surface of the coaming in the flowing process, and separation of grease, water and impurities in waste water is accelerated. Due to the arrangement of the annular separation channel, water flow is guided to be uniformly distributed, the problem of short water flow or local accumulation possibly occurring in a traditional plane separation device is solved, and the separation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a livestock breeding wastewater treatment device based on biodegradation treatment. Background Art

[0002] In the field of livestock breeding wastewater treatment, the wastewater usually contains a large amount of organic matter, nitrogen and phosphorus compounds, and solid suspended matters, with complex components and high pollutant concentrations. When treating this wastewater, it is necessary to preliminarily treat the wastewater through biodegradation, generally through an anaerobic reaction tank. During the treatment process, the sludge at the bottom of the anaerobic reaction tank is prone to sedimentation and caking, resulting in insufficient contact between microorganisms and wastewater, and a decrease in the degradation efficiency of pollutants. Traditional solutions mostly rely on mechanical stirring, which not only has high energy consumption, but also the stirring components are easily damaged when they are in complex water quality for a long time, and the maintenance cost is high.

[0003] For example, Chinese Patent Authorization Publication No. CN117865354B discloses an AAO sewage treatment process and its treatment equipment, including a sludge tank. An installation plate is rotatably arranged at the end of the sludge tank. An installation rod is arranged on the installation plate, and the installation rod is arranged in the sludge tank. A plurality of installation rods are arranged around the center of the sludge tank. A cleaning plate is arranged on the side of the installation rod close to the sludge tank. The cleaning plate is in sliding contact with the inner wall of the sludge tank. A plurality of groups of cleaning plates and installation rods are correspondingly arranged. Each group of cleaning plates is arranged at intervals on the installation rod. The cleaning plate is inclined in the sludge tank. The end of the cleaning plate corresponds to the gap between two adjacent cleaning plates on the adjacent installation rod. A driving component is arranged on the sludge tank, and the driving component is connected to the installation plate to drive the installation plate to rotate. This patent relies on mechanical driving components, such as a driving gear ring, gears, etc., to drive the cleaning plate and the scraper to rotate. The long-term operation has high energy consumption, and precision components such as gears and sprocket discs are easily corroded and worn in the sludge environment, with a high maintenance frequency and cost; the arrangement of the cleaning plate and the scraper is fixed, and it is difficult to flexibly adjust the cleaning intensity and range according to the sludge deposition state and the wastewater quality. Summary of the Invention

[0004] In view of the above problems, a livestock breeding wastewater treatment device based on biodegradation treatment is provided. By forming multiple separation interfaces in a limited reservoir volume, the contact area between the wastewater and the baffle is significantly increased, enabling the grease and suspended solids to act more fully with the baffle surface during the flow process, and accelerating the separation of grease, water, and impurities in the wastewater. The setting of the annular separation channel guides the uniform distribution of water flow, avoiding the problems of water flow short-circuit or local accumulation that may occur in traditional planar separation devices, and improving the separation efficiency.

[0005] To solve the problems of the existing technology, the present invention provides a livestock breeding wastewater treatment device based on biodegradation treatment, which includes a reaction tank. A water storage tank is arranged above the reaction tank, and a water inlet is provided at the top of the water storage tank. A plurality of conical baffles coaxial with the axis of the water storage tank are sleeved inside the water storage tank at intervals along the axial direction. The diameters of adjacent baffles gradually increase in the direction from the axis of the water storage tank towards the inner wall thereof, and the diameter of the bottom of each baffle is smaller than that of the top, so that an annular separation channel is formed between adjacent baffles. A plurality of drain pipes extending towards the reaction tank are arranged at the center of the inner wall of the water storage tank. A plurality of nozzles corresponding to the drain pipes one by one are arranged on the inner wall of the reaction tank. The nozzles spray towards the middle of the reaction tank, which is used to wash the sludge at the bottom of the tank and promote the mixing of mud and water. The bottom of the water storage tank is of a conical structure, and a conveying mechanism for conveying the sludge at the bottom of the water storage tank into the reaction tank is arranged at the bottom of the water storage tank.

[0006] Preferably, a rotatable mounting frame is arranged inside the water storage tank. A plurality of support rods extending radially are arranged on the mounting frame, and a plurality of baffles are fixedly connected to the support rods.

[0007] Preferably, a plurality of nozzles are evenly distributed circumferentially along the inner wall of the reaction tank, and a plurality of nozzles are inclinedly arranged on the inner wall of the reaction tank.

[0008] Preferably, the number of nozzles is an even number, and two adjacent nozzles are arranged oppositely. An arc-shaped guide plate is arranged between every two oppositely arranged nozzles.

[0009] Preferably, there is a gap between the guide plate and the bottom of the reaction tank, and a mounting seat is arranged at the bottom of the reaction tank. The guide plate is rotatably arranged on the mounting seat.

[0010] Preferably, a connecting rod hinged to the bottom of the guide plate is arranged at the bottom of the guide plate. A driving rod capable of sliding along the vertical axis direction is arranged on the base. The top of the driving rod is hinged to the other end of the connecting rod, and a linear driver for driving the driving rod to move is installed on the base.

[0011] Preferably, a booster pump for pressurizing the water flow to provide the power required for the nozzle to wash and an electromagnetic valve for controlling the on-off and flow rate of the drain pipe are arranged on the drain pipe.

[0012] Preferably, a plurality of ultrasonic sludge level gauges are arranged inside the reaction tank.

[0013] Preferably, the conveying mechanism includes a sludge discharge pipe extending along the axis of the water storage tank to the bottom of the reaction tank and a spiral blade rotatably arranged inside the sludge discharge pipe. A second rotary driver for driving the spiral blade to rotate is arranged at the bottom of the reaction tank. A feed inlet and a discharge outlet are respectively arranged at the top and bottom of the sludge discharge pipe.

[0014] Preferably, a rotatable conical rotating disk is sleeved on the bottom of the reaction tank and arranged on the sludge discharge pipe. A plurality of spiral guiding strips are arranged on the rotating disk at equal intervals around its axis. A third rotating drive motor for driving the rotating disk to rotate is arranged at the bottom of the reaction tank.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: 1. In the present invention, the multi-layer conical baffles in the reservoir are coaxially sleeved. Since the bottom diameter of each baffle is smaller than the top diameter, a frustum-shaped structure with a wider top and a narrower bottom is formed, so that an annular separation channel can be formed between adjacent baffles. Multiple separation interfaces are formed within the limited reservoir volume, significantly increasing the contact area between the wastewater and the baffles, enabling the oil and suspended matter to interact more fully with the baffle surface during the flow process, and accelerating the separation of oil, water, and impurities in the wastewater. The setting of the annular separation channel guides the uniform distribution of the water flow, avoiding the problems of water flow short-circuit or local accumulation that may occur in traditional planar separation devices, and improving the separation efficiency.

[0016] 2. Through the setting of the mounting frame in the present invention, when the mounting frame rotates, the support rods extending radially are driven to rotate synchronously, and then a plurality of baffles fixedly connected to the support rods rotate accordingly. It breaks the traditional mode in the prior art where the inclined plates are fixed, optimizes the flow state of the wastewater through rotation, enhances the interaction between the wastewater and the baffles, and significantly improves the separation efficiency of oil and suspended matter. At the same time, this rotating structure facilitates the cleaning and maintenance of the baffles. When it is necessary to remove the surface impurities of the baffles, the rotatable mounting frame can adjust the baffles to a position convenient for operation, reducing the cleaning difficulty and extending the service life of the device.

[0017] 3. Through the cooperation of the arc-shaped guiding plate and the inclined nozzle in the present invention, the single-direction jet water flow is transformed into a directional composite flow field, making the mixing of mud and water no longer rely on a single scouring force, but forming a continuous circulating flow through the guiding of the curved surface of the guiding plate, significantly increasing the contact area between the sludge and the wastewater; without the need for additional stirring equipment, the biodegradation efficiency in the reaction tank is improved. In addition, the arc-shaped guiding plate can reduce the water flow resistance and is convenient for processing and installation, reducing the manufacturing and maintenance costs of the device. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure schematic diagram of a livestock and poultry breeding wastewater treatment device based on biodegradation treatment.

[0019] Figure 2 It is a cross-sectional structure schematic diagram of a livestock and poultry breeding wastewater treatment device based on biodegradation treatment.

[0020] Figure 3 It is a three-dimensional cross-sectional structure schematic diagram of a livestock and poultry breeding wastewater treatment device based on biodegradation treatment.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure inside the water storage tank and the reaction tank in a livestock breeding wastewater treatment device based on biodegradation treatment.

[0022] Figure 5 The present invention is a top view of a reaction tank in a livestock breeding wastewater treatment device based on biodegradation treatment.

[0023] Figure 6 The present invention is a three-dimensional structural diagram of a conveying mechanism, a rotating disk, a drain pipe and a nozzle in a livestock breeding wastewater treatment device based on biodegradation treatment.

[0024] Figure 7 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 8 yes Figure 2 Enlarged view of point B in the middle.

[0026] Figure 9 yes Figure 3 Enlarged view of point C in the middle.

[0027] Figure 10 yes Figure 4 Enlarged view of point D in the middle.

[0028] The numbers in the figure are: 1. Reaction tank; 11. Nozzle; 12. Guide plate; 121. Mounting seat; 122. Connecting rod; 13. Driving rod; 131. Linear drive; 14. Ultrasonic mud level meter; 2. Water reservoir; 21. Water inlet; 22. Enclosure; 221. Mounting frame; 2211. Bevel gear ring; 222. Support rod; 23. Sink; 231. Oil drain pipe; 232. Receiver; 233. Mounting cavity; 234. Bevel gear; 235. First rotary drive motor; 24. Drain pipe; 241. Booster pump; 242. Solenoid valve; 25. Conveying mechanism; 251. Mud discharge pipe; 2511. Feed inlet; 2512. Discharge outlet; 2513. Spiral blade; 2514. Second rotary drive motor; 26. Rotating disk; 261. Guide strip; 262. Third rotary drive motor. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figures 1 to 4As shown: A livestock breeding wastewater treatment device based on biodegradation treatment, including a reaction tank 1. Above the reaction tank 1, there is a water storage tank 2, and at the top of the water storage tank 2, there is a water inlet 21. Inside the water storage tank 2, a plurality of conical baffles 22 coaxial with the axis of the water storage tank 2 are sleeved at intervals along the axis. The diameters of adjacent baffles 22 gradually increase along the direction from the axis of the water storage tank 2 towards its inner wall extension, and the diameter of the bottom of each baffle 22 is smaller than that of the top, so that an annular separation channel is formed between adjacent baffles 22. At the central part of the inner wall of the water storage tank 2, a plurality of drain pipes 24 extending towards the reaction tank 1 are arranged. On the inner wall of the reaction tank 1, a plurality of spray heads 11 corresponding to the drain pipes 24 one by one are arranged. The spray heads 11 spray towards the middle of the reaction tank 1, which is used to wash the sludge at the bottom of the tank and promote the mixing of mud and water. The bottom of the water storage tank 2 is of a conical structure, and a conveying mechanism 25 for transporting the sludge at the bottom of the water storage tank 2 into the reaction tank 1 is arranged at the bottom of the water storage tank 2.

[0031] In this device, the multi-layer conical baffles 22 in the water storage tank 2 are sleeved coaxially. And because the diameter of the bottom of each baffle 22 is smaller than that of the top, a frustum-shaped structure with a wider top and a narrower bottom is formed, so that an annular separation channel can be formed between adjacent baffles 22. When the wastewater generated by livestock breeding flows into the water storage tank 2 from the top water inlet 21, as the water level rises, the wastewater will flow radially around in the water storage tank 2, and the preliminary separation is realized by using the density difference between oil and water, and between suspended matter and water. The oil with a smaller density will adhere to the upper surface of the conical baffle 22, gather towards the periphery of the water storage tank 2 along with the radial movement of the water flow, and finally float to the top of the wastewater to form an oil layer, which is convenient for the staff to collect the oil layer; while the suspended matter with a larger density, such as fecal particles, feed residues, etc., will settle along the lower surface of the baffle 22 towards the bottom of the water storage tank 2. Since the bottom of the water storage tank 2 is of a conical structure, the settled sludge will naturally converge towards the center of the bottom of the water storage tank 2, and is centrally collected by the bottom conveying mechanism 25 and transported into the reaction tank 1.

[0032] Through the setting of the conical baffle 22, multiple separation interfaces are formed in the limited volume of the water storage tank 2, significantly increasing the contact area between the wastewater and the baffle 22, enabling the oil and suspended matter to act more fully on the surface of the baffle 22 during the flow process, and accelerating the separation of oil, water and impurities in the wastewater. The setting of the annular separation channel guides the uniform distribution of the water flow, avoiding the problems of water flow short-circuit or local accumulation that may occur in traditional planar separation devices, and improving the separation efficiency. At the same time, the frustum shape of each baffle 22 provides power for the directional movement of substances. The oil floats upwards along the inclination angle of the conical surface, and the suspended matter settles downwards along the inclination angle of the conical surface. The preliminary separation of solid phase, liquid phase and oil-water can be realized without additional power, reducing the energy consumption.

[0033] The clear water separated from the reservoir 2 will pass through the drain pipe 24 in the central area inside the reservoir 2 and lead to the nozzle 11 on the peripheral side of the reaction tank 1. The nozzle 11 sprays towards the middle of the reaction tank 1, which can form a scouring force on the sludge layer at the bottom of the reaction tank 1, prompting the sludge to spread in the reaction tank 1. The conveying mechanism 25 at the bottom of the reservoir 2 conveys the settled sludge to the reaction tank 1 in a directional manner, forming a synergistic effect with the scouring flow of the nozzle 11, forming a circulating flow of mud and water mixture, enabling the anaerobic microorganisms to fully contact the organic matter in the wastewater, and strengthening the biodegradation effect in the reaction tank 1. Aiming at the characteristics of wastewater from livestock breeding containing grease and high suspended solids, the efficient connection between pretreatment and anaerobic reaction is realized, reducing the treatment load of the subsequent reaction tank 1 and improving the operation stability and organic matter removal efficiency of the whole device.

[0034] By setting a water level sensor and a timer in the reservoir 2, the reservoir 2 can drain water into the reaction tank 1 regularly and quantitatively. When the wastewater continuously flows into the reservoir 2 through the water inlet 21, the water level sensor monitors the liquid level height in real time. When the water level touches the preset high water level threshold, the water level sensor sends a signal to the control system at the rear end, triggering the opening of the drain pipe 24, and directing the separated clear water in the reservoir 2 to the nozzle 11 of the reaction tank 1 to form a pulsed scour. When the water level drops to the low water level threshold, the sensor instructs to close the drain pipe 24 and stop draining water, waiting for the next water storage. Through the preset time interval, the timer regularly sends a drainage instruction to the control system at the rear end. Regardless of the current water level in the reservoir 2, the upper clear water in the middle of the reservoir 2 is pumped for scouring, and the clear water avoids the water in the top grease layer and the bottom sludge layer in the reservoir 2, ensuring that the mud and water mixing process in the reaction tank 1 continues according to a fixed cycle. The dynamic balance of water and mud between the reservoir 2 and the reaction tank 1 can be achieved without manual intervention, providing the underlying control logic for the intelligent operation of the device, which is especially suitable for the unmanned management needs of large-scale farms.

[0035] As Figures 2 to 4 、 Figure 7 and Figure 10 shown: A rotatable mounting frame 221 is provided in the reservoir 2, and a plurality of support rods 222 extending radially are provided on the mounting frame 221, and a plurality of enclosing plates 22 are fixedly connected to the support rods 222.

[0036] Through the setting of the mounting frame 221, when the mounting frame 221 rotates, it drives the synchronously rotating support rods 222 extending radially, and further makes a plurality of baffles 22 fixedly connected to the support rods 222 rotate accordingly. When treating wastewater, this rotation can promote the formation of dynamic flow of the wastewater in the reservoir 2, enabling the wastewater to fully contact the baffles 22, and accelerating the separation of grease and suspended matter on the surface of the baffles 22. For example, under the disturbance brought by the rotation, the grease is more likely to accumulate on the upper surface of the baffle 22 and move in a specific direction, and the suspended matter can also settle more smoothly along the lower surface of the baffle 22. It breaks the traditional mode in the prior art where the inclined plates are fixed, optimizes the flow state of the wastewater through rotation, enhances the interaction between the wastewater and the baffles 22, and significantly improves the separation efficiency of grease and suspended matter. At the same time, this rotating structure facilitates the cleaning and maintenance of the baffles 22. When it is necessary to remove the surface impurities of the baffles 22, the rotatable mounting frame 221 can adjust the baffles 22 to a convenient position for operation, reducing the cleaning difficulty and extending the service life of the device. In addition, the dynamic flow of the wastewater during the rotation process can eliminate local water flow dead corners, making the separation process in the reservoir 2 more uniform and efficient, providing a strong guarantee for the stable treatment of the subsequent reaction tank 1.

[0037] A bevel gear ring 2211 fixedly connected thereto is provided at the bottom of the mounting frame 221. A receiving platform 232 and a water tank 23 are provided in the reservoir 2. The mounting frame 221 is rotatably arranged between the receiving platform 232 and the water tank 23. The receiving platform 232 is used to support the mounting frame 221 and a plurality of baffles 22. The water tank 23 is lower than the top height of the baffles 22 and is used to collect the surface grease discharged from the reservoir 2. A drain pipe 231 leading to the outside is also provided on the water tank 23. And the mounting frame 221 is hermetically connected to the receiving platform 232 and the water tank 23 through the baffles 22, so that an installation cavity 233 is formed between the outermost baffle 22 and the interior of the reservoir 2. A bevel gear 234 meshing with the gear ring and a first rotary drive motor 235 for driving the bevel gear 234 to rotate are provided in the installation cavity 233. By driving the rotation of the bevel gear 234 by the first rotary drive motor 235, driving the rotation of the bevel gear ring 2211 through the rotation of the bevel gear 234, and driving the rotation of the mounting frame 221 through the bevel gear ring 2211, a plurality of baffles 22 can rotate synchronously, thereby improving the separation efficiency of grease, liquid phase and solid phase in the wastewater.

[0038] As Figures 2 to 6 shown: A plurality of nozzles 11 are evenly distributed circumferentially along the inner wall of the reaction tank 1, and a plurality of nozzles 11 are inclinedly arranged on the inner wall of the reaction tank 1.

[0039] After the wastewater is separated by the reservoir 2, it enters the nozzles 11 on the circumferential side of the reaction tank 1 through the drain pipe 24. Since the nozzles 11 are evenly distributed circumferentially and inclined towards the middle of the tank body, the ejected water flow will scour the sludge layer at the bottom and middle of the reaction tank 1 at a certain angle: The spray nozzles 11 evenly distributed circumferentially enable the water flow to better cover the entire area inside the reaction tank 1, avoiding the scouring dead corners caused by traditional single-point or local water distribution, and ensuring that every sludge in the tank can be affected by the water flow; the spraying method inclined towards the middle generates a centripetal driving force for the water flow, prompting the sludge to gather from the tank wall towards the middle and then spread outwards in all directions, forming a circulating flow. This flow pattern breaks the static deposition state of the sludge, enables the anaerobic microorganisms to fully contact the organic matter in the wastewater, and strengthens the biodegradation reaction. Without complex flow guiding components, efficient mixing can be achieved only through the arrangement and inclination angle of the spray nozzles 11, simplifying the device structure and reducing the maintenance cost at the same time, which is especially suitable for the treatment scenario of livestock wastewater containing high suspended solids.

[0040] As Figures 2 to 6 and Figure 8 shown: The number of the spray nozzles 11 is an even number, and two adjacent spray nozzles 11 are arranged oppositely, and an arc-shaped flow guiding plate 12 is arranged between every two oppositely arranged spray nozzles 11.

[0041] When the clear water in the middle of the reservoir 2 sprays out from the spray nozzles 11 through the drain pipe 24, the spray nozzles 11 spray the water flow towards the middle of the reaction tank 1 at an inclination angle of 30° to 45° with respect to the tangent of the tank wall. The water flows sprayed by the two oppositely arranged spray nozzles 11 form an opposite impact or spiral surrounding flow trajectory under the guidance of the arc-shaped flow guiding plate 12. The former makes the water flow collide in the middle area of the tank body and then spread outwards in all directions, while the latter drives the water flow to make a spiral upward or downward movement along the radian of the flow guiding plate 12, pushing the sludge layer at the bottom and in the middle of the reaction tank 1 to move circularly towards the circumferential side or the center. Through the cooperation of the arc-shaped flow guiding plate 12 and the inclined spray nozzles 11, the single-direction spray water flow is transformed into a directional composite flow field, making the mixing of mud and water no longer rely on a single scouring force, but forming a continuous circulating flow through the surface guiding of the flow guiding plate 12, significantly increasing the contact area between the sludge and the wastewater; the symmetrical arrangement of the even-numbered spray nozzles 11 ensures uniform stress in each circumferential area of the reaction tank 1, avoiding the problems of too strong or too weak local water flow caused by traditional single-side water distribution, and eliminating the sludge deposition dead corners; the inclined spray angle of 30° to 45° not only ensures the scouring force of the water flow on the sludge layer, but also avoids excessive energy loss caused by the water flow directly impacting the tank bottom due to too large an angle. With the surface guiding of the arc-shaped flow guiding plate 12, the water flow energy is more efficiently converted into the power to promote sludge mixing, and the biodegradation efficiency in the reaction tank 1 is improved without the need for additional stirring equipment. In addition, the arc-shaped flow guiding plate 12 can reduce the water flow resistance and is convenient for processing and installation, reducing the manufacturing and maintenance costs of the device.

[0042] As Figures 2 to 6 and Figure 8 shown: There is a gap between the flow guiding plate 12 and the bottom of the reaction tank 1, and a mounting seat 121 is arranged at the bottom of the reaction tank 1, and the flow guiding plate 12 is rotatably arranged on the mounting seat 121.

[0043] The baffle plate 12 is rotatably arranged at the bottom of the reaction tank 1 through the mounting seat 121 and has a gap with the bottom of the tank, allowing water flow to pass through under the baffle plate 12. When it is necessary to adjust the water flow pattern in the reaction tank 1, the arc orientation of the baffle plate 12 can be changed by rotating it, so as to guide the water flow sprayed by the nozzle 11 to spread in different directions. The setting of the bottom gap avoids the direct contact between the baffle plate 12 and the bottom of the reaction tank 1, prevents the accumulation and blockage of sludge or suspended matter at the bottom of the baffle plate 12, and at the same time allows fine particles to pass through with the water flow, maintaining the smooth flow in the reaction tank 1, facilitating the adjustment of the position of the baffle plate 12 when needed, quickly cleaning the attached grease or sludge on the surface, and reducing the manual maintenance cost. By manually or automatically controlling the rotation angle of the baffle plate 12, the water flow direction can be adjusted in real time according to the influent load, sludge concentration, etc., adapting to different treatment conditions, and a dynamically changing spiral or vortex flow field can be formed. Compared with the fixed baffle plate 12, the agitation of the sludge is more uniform and thorough, especially suitable for treating the wastewater from livestock farming containing a large amount of fibers or particles, avoiding the problem of single flow field caused by long-term scouring of the traditional fixed structure.

[0044] As Figures 2 to 6 and Figure 8 shown: A connecting rod 122 hinged to the bottom of the baffle plate 12 is provided, a driving rod 13 capable of sliding along the vertical axis direction is arranged on the base, the top of the driving rod 13 is hinged to the other end of the connecting rod 122, and a linear actuator 131 for driving the driving rod 13 to move is installed on the base.

[0045] The linear actuator 131 is preferably a cylinder or an electric push rod. When the linear actuator 131 is started, it drives the driving rod 13 to slide upward or downward along the axis. Through the movement of the driving rod 13, the hinged transmission of the connecting rod 122 is driven, so that the baffle plate 12 rotates around its connection point with the mounting seat 121, thereby converting the reciprocating motion of the linear actuator 131 into the angle adjustment of the baffle plate 12, realizing the adjustment of the water flow direction in the reservoir 2, and cooperating with the inclined spraying of the nozzle 11 to form a variable spiral flow, vortex flow or countercurrent flow field in the reaction tank 1. Avoid the working condition limitations of the traditional fixed baffle plate 12; through the dynamic optimization of the angle of the baffle plate 12, the water flow energy sprayed by the nozzle 11 is maximally converted into sludge hybrid power, and compared with the fixed structure, the scouring energy consumption loss can be reduced, with the advantages of energy saving and efficient treatment.

[0046] As Figures 2 to 4 、 Figure 6 and Figure 10 shown: A power booster pump 241 for pressurizing the water flow to provide the power required for the scouring of the nozzle 11 and a solenoid valve 242 for controlling the on-off and flow rate of the drain pipe 24 are arranged on the drain pipe 24.

[0047] When the water level in the reservoir 2 reaches the preset height or the timer triggers the flushing instruction, the solenoid valve 242 is first opened, and the clear water in the reservoir 2 flows into the drain pipe 24; then the booster pump 241 is started to pressurize the water flow, converting the low-pressure water flow into a high-speed water flow with strong impact force, which is obliquely sprayed to the middle of the reaction tank 1 through the nozzle 11. After the flushing is completed, the solenoid valve 242 is closed to cut off the water flow, and the booster pump 241 stops running synchronously, entering the next water storage cycle. It realizes flexible adjustment of the flushing frequency, duration and water pressure of the nozzle 11, and dynamically matches the flushing process with the separation efficiency of the reservoir 2 and the sludge concentration of the reaction tank 1.

[0048] The controllable high-pressure water flow provided by the booster pump 241 ensures that the nozzle 11 can effectively flush the sludge layer at the bottom and middle of the reaction tank 1, and can maintain a stable flushing force even when the water level in the reservoir 2 is low, avoiding the problem of insufficient mixing caused by insufficient water pressure in traditional gravity flow flushing; the fast opening and closing function of the solenoid valve 242 realizes pulsed flushing, which not only ensures periodic disturbance of the sludge, but also avoids energy waste caused by continuous flushing. Cooperating with the water level sensor and the timer can realize automatic control of the equipment, avoid the long-term high pressure on the reservoir 2, ensure the structural safety of the reservoir 2 and reduce equipment loss, and improve the intelligence and automation level of the whole device from the hardware control level.

[0049] As Figure 2 、 Figure 3 and Figure 9 shown: There are multiple ultrasonic sludge level gauges 14 in the reaction tank 1.

[0050] The ultrasonic sludge level gauge 14 emits high-frequency ultrasonic signals to the sludge layer, receives the echo signals reflected by the sludge surface, calculates the sludge level height and the position of the sludge interface according to the signal propagation time, and transmits the data to the backend control system in real time. When the sludge level in a certain area is higher than the preset threshold, the control system automatically adjusts the flushing frequency of the corresponding area nozzle 11 or the pressure of the booster pump 241 to enhance the local flushing force; if the sludge level is lower than the normal range, the system reduces the flushing frequency of this area to avoid excessive disturbance affecting the attachment of microorganisms. The collaborative monitoring of multiple sludge level gauges can construct a three-dimensional model of the sludge distribution in the reaction tank 1, providing data support for the angle adjustment of the baffle 12, the operation frequency of the conveying mechanism 25, etc., and realizing the closed-loop control from monitoring, feedback to regulation.

[0051] The multi-point arranged ultrasonic sludge level gauge 14 covers the entire area of the reaction tank 1, captures the change of sludge concentration in real time, avoids local data deviation compared with single-point monitoring, and provides a more reliable regulation basis for the flushing system; the data of the ultrasonic sludge level gauge 14 can be linked with the spray head 11, the guide plate 12, and the conveying mechanism 25 in real time, dynamically balancing the sludge distribution in the reaction tank 1, preventing local accumulation from affecting the biodegradation efficiency, and at the same time avoiding the loss of anaerobic microorganisms caused by excessive flushing; for the common sludge concentration fluctuations in livestock wastewater treatment, it can adapt to water quality changes without manual intervention, ensure that the device maintains high-efficiency treatment under different working conditions, create a suitable growth environment for anaerobic microorganisms by maintaining a stable sludge concentration, and improve the organic matter degradation rate and the operation stability of the system.

[0052] As Figures 2 to 4 , Figure 6 and Figure 9 shown in the figure: The conveying mechanism 25 includes a sludge discharge pipe 251 extending along the axis direction of the reservoir 2 to the bottom of the reaction tank 1 and a spiral blade 2513 rotatably arranged in the sludge discharge pipe 251. A second rotary driver for driving the spiral blade 2513 to rotate is arranged at the bottom of the reaction tank 1. The top and bottom of the sludge discharge pipe 251 are respectively provided with a feed inlet 2511 and a discharge outlet 2512.

[0053] When the second rotary driver is started, the spiral blade 2513 rotates in a fixed direction in the sludge discharge pipe 251, and uses the axial thrust of the spiral blade 2513 to suck the sludge converged in the conical area at the bottom of the reservoir 2 from the top feed inlet 2511 into the sludge discharge pipe 251. With the continuous rotation of the spiral blade 2513, the sludge spirally descends along the inner wall of the sludge discharge pipe 251 and finally discharges from the bottom discharge outlet 2512 into the reaction tank 1. The sludge discharge pipe 251 is preferably arranged coaxially with the axis of the reaction tank 1. This spiral conveying method realizes the directional migration of sludge through mechanical transmission, avoiding the problems of blockage or discontinuous conveying that may occur in traditional gravity sludge discharge, and is especially suitable for the sludge with more fibrous and granular suspended substances in livestock wastewater.

[0054] The sludge discharge pipe 251 accurately conveys the sludge to the bottom of the reaction tank 1, so that the mud flow discharged by the spiral blade 2513 and the water flow sprayed by the spray head 11 form a convective cycle from central feeding to circumferential flushing, promoting the three-dimensional mixing of sludge in the reaction tank 1. The concentrated sludge conveyed by the spiral blade 2513 is dispersed by the water flow of the spray head 11 and pushed towards the pool wall of the reaction tank 1, and then guided back to the center by the guide plate 12 to form a dynamic balance, strengthening the contact efficiency between microorganisms and organic matter; the sludge discharge pipe 251 is vertically arranged along the axis of the reservoir 2 and is naturally butted with the conical structure at the bottom of the reservoir 2, reducing the conveying resistance by using the gravity convergence characteristics of the sludge, and at the same time avoiding complex pipe elbows and reducing the water flow energy loss, which is suitable for the compact equipment layout of medium and small livestock farms.

[0055] AsFigures 2 to 6 and Figure 9 As shown in Figure 9 , a rotatable conical rotating disk 26 is sleeved on the bottom of the reaction tank 1 on the sludge discharge pipe 251. A plurality of spiral guide strips 261 are arranged on the rotating disk 26 at equal intervals around its axis. A third rotary drive motor 262 for driving the rotating disk 26 to rotate is arranged at the bottom of the reaction tank 1.

[0056] The sludge discharged from the discharge port 2512 of the sludge discharge pipe 251 first falls on the central area of the rotating disk 26. When the third rotary drive motor 262 drives the conical rotating disk 26 to rotate, the spiral guide strips 261 rotate synchronously with the rotating disk 26. Using the tangential thrust of the spiral surface, the muddy water mixture at the bottom of the reaction tank 1 is pushed radially to the inner wall of the reaction tank 1, forming a counterflush with the centripetal scouring flow sprayed by the spray head 11, prompting the sludge to form a three-dimensional flow at the bottom of the tank; the curved surface of the spiral guide strip 261 causes the water flow to generate spiral upward or downward eddies during the movement process, rolling up the sludge layer deposited at the bottom of the tank and mixing it with the upper layer of wastewater. Especially for fibrous and granular suspended solids, it has a stronger stirring effect, preventing them from forming dead corners due to long-term deposition. Strengthening the water flow circulation intensity in the reaction tank 1 is especially suitable for livestock wastewater with a high concentration of suspended solids, preventing the deposition of suspended solids at the bottom of the tank due to their large density.

[0057] The above embodiments only represent one or several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An animal husbandry wastewater treatment device based on biodegradation treatment, including a reaction tank, characterized in that, A water storage tank is arranged above the reaction tank, and a water inlet is provided at the top of the water storage tank; Inside the water storage tank, a plurality of conical baffles coaxial with the axis of the water storage tank are sleeved at intervals along the axial direction. The diameters of adjacent baffles increase in turn along the direction from the axis of the water storage tank to the inner wall extension direction, and the diameter of the bottom of each baffle is smaller than that of the top, so that an annular separation channel is formed between adjacent baffles; A plurality of drain pipes extending towards the reaction tank are arranged at the center of the inner wall of the water storage tank. A plurality of nozzles corresponding to the drain pipes one by one are arranged on the inner wall of the reaction tank. The nozzles spray towards the middle of the reaction tank, which is used to wash the sludge at the bottom of the tank and promote the mixing of mud and water; The bottom of the water storage tank is of a conical structure, and a conveying mechanism for conveying the sludge at the bottom of the water storage tank into the reaction tank is arranged at the bottom of the water storage tank.

2. The livestock breeding wastewater treatment device based on biodegradation treatment according to claim 1, characterized in that, A rotatable mounting frame is arranged in the water storage tank. A plurality of support rods extending radially are arranged on the mounting frame, and a plurality of baffles are fixedly connected to the support rods.

3. The livestock breeding wastewater treatment device based on biodegradation treatment according to claim 1, characterized in that, A plurality of nozzles are evenly distributed circumferentially along the inner wall of the reaction tank, and a plurality of nozzles are arranged obliquely on the inner wall of the reaction tank.

4. The livestock breeding wastewater treatment device based on biodegradation treatment according to claim 3, characterized in that, The number of nozzles is an even number, and two adjacent nozzles are arranged oppositely. An arc-shaped guide plate is arranged between every two oppositely arranged nozzles.

5. A livestock breeding wastewater treatment device based on biodegradation treatment according to claim 4, characterized in that, There is a gap between the guide plate and the bottom of the reaction tank, and a mounting seat is arranged at the bottom of the reaction tank. The guide plate is rotatably arranged on the mounting seat.

6. The livestock breeding wastewater treatment device based on biodegradation treatment according to claim 5, characterized in that, A connecting rod hinged to the bottom of the guide plate is arranged at the bottom of the guide plate. A driving rod capable of sliding along the vertical axis direction is arranged on the base. The top of the driving rod is hinged to the other end of the connecting rod, and a linear drive for driving the driving rod to move is installed on the base.

7. A livestock breeding wastewater treatment device based on biodegradation treatment according to any one of claims 1-6, characterized in that, A booster pump for pressurizing the water flow to provide the power required for the nozzle to wash and a solenoid valve for controlling the on-off and flow rate of the drain pipe are arranged on the drain pipe.

8. A livestock breeding wastewater treatment device based on biodegradation treatment according to any one of claims 1-6, characterized in that, A plurality of ultrasonic sludge level gauges are arranged in the reaction tank.

9. A livestock breeding wastewater treatment device based on biodegradation treatment according to any one of claims 1-6, characterized in that, The conveying mechanism includes a sludge discharge pipe extending along the axis of the water storage tank to the bottom of the reaction tank and a spiral blade rotatably arranged in the sludge discharge pipe. A second rotary drive for driving the spiral blade to rotate is arranged at the bottom of the reaction tank. The top and bottom of the sludge discharge pipe are respectively provided with a feed inlet and a discharge outlet.

10. A livestock breeding wastewater treatment device based on biodegradation treatment according to claim 9, characterized in that, A rotatable conical rotating disk is sleeved on the sludge discharge pipe at the bottom of the reaction tank. A plurality of spiral guide strips evenly surrounding its axis are arranged on the rotating disk. A third rotary drive motor for driving the rotating disk to rotate is arranged at the bottom of the reaction tank.

Images