Antibiotic-polluted pig manure aerobic composting device based on phage intervention

Abstract

The utility model discloses an antibiotic-polluted pig manure aerobic composting device based on phage intervention, which relates to the technical field of agricultural waste treatment and comprises a base, a stirring device fixedly connected to the upper part of the base, an inner container mounted outside the stirring device and a shell mounted outside the inner container, and a fixing ring is arranged between the shell and the inner container. The upper part of the stirring device is rotationally connected with a middle shaft, the stirring device is provided with a hollow triangular stirring blade capable of rotating around the middle shaft, the upper part of the stirring device is provided with a feeding hole and a protective cover, and a blade driven by a motor is arranged in the feeding hole. According to the utility model, the contact area is increased through the hollow triangular blades, and bacteriophages are accurately fed through the nozzles, so that materials are fully mixed and effective intervention of antibiotic drug-resistant bacteria is realized.

Description

Technical Field

[0001] This utility model relates to the field of agricultural waste treatment technology, and in particular to an aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention. Background Technology

[0002] With the rapid development of large-scale pig farming, the amount of pig manure produced is increasing day by day. The residual antibiotics and the antibiotic-resistant bacteria induced by them have become a serious source of environmental pollution. At present, aerobic composting is the main means of treating pig manure and converting it into organic fertilizer. It degrades organic matter and kills some pathogens through the high-temperature fermentation of microorganisms.

[0003] However, traditional aerobic composting equipment for pig manure has significant structural limitations when dealing with antibiotic-resistant bacteria contamination. Existing composting equipment only has basic mechanical stirring functions, and its stirring blades are relatively simple in design, mostly solid plate or paddle structures. Due to the high viscosity and moisture content of pig manure, this simple mechanical stirring is difficult to achieve sufficient internal turning and breaking of the material, making it difficult for oxygen to enter the core area of ​​composting. More importantly, in order to combat drug-resistant bacteria, it is necessary to introduce liquid biological agents containing specific bacteriophages for precise intervention, but existing equipment lacks supporting mechanisms for fixed-point liquid delivery and uniform spraying.

[0004] Without a dedicated spraying and efficient mixing structure, the phage solution can only be simply sprayed on the surface of the material, making it difficult to penetrate deep into the compost. In addition, the traditional mixing blades have a limited contact area with the material, making it impossible to fully mix the biological agents with the sticky pig manure. As a result, the phage cannot effectively contact and lyse the drug-resistant bacteria, leaving a large number of drug-resistant bacteria in the compost products, which cannot meet the increasingly stringent environmental protection and biosafety requirements.

[0005] Therefore, this invention proposes an aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems existing in the aerobic composting device for pig manure, such as the simple mixing structure, inability to adapt to deep mixing of high-viscosity materials, lack of a dedicated biological agent dosing mechanism leading to difficulty in uniform distribution of intervention liquids such as bacteriophages, and easy material spillage and contamination of the device's interlayer during the feeding process, as well as insufficient internal oxygen supply in the early stage of composting, this utility model aims to provide an aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention with an improved structure that can effectively solve the above problems.

[0007] This utility model provides an aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention, comprising: a base, a stirring device fixedly connected to the upper part of the base, an inner liner installed outside the stirring device, an outer shell installed outside the inner liner, and a fixing ring disposed between the outer shell and the inner liner; the inner side of the fixing ring is fixedly connected to the outer side of the inner liner, and the outer side of the fixing ring is fixedly connected to the inner side of the outer shell.

[0008] The mixing device is equipped with a central shaft rotatably connected to the upper middle part. The mixing device has mixing blades with a hollow triangular structure. The special shape of the mixing blades can significantly increase the contact area between the blades and the pig manure material, improve the mixing efficiency and promote oxygen mixing. The mixing blades are fixedly connected to the outer wall of the central shaft and rotate. The upper part of the mixing device is equipped with a feed inlet and a protective cover. The right side of the protective cover is fixedly connected to a motor. The feed inlet is equipped with blades inside the feed inlet and is rotatably connected to the output shaft of the motor through a drive shaft. The feed inlet is installed inside the protective cover, and the bottom surface of the protective cover is fixedly connected to the upper right side of the mixing device. A rectangular frame is set at the bottom of the feed inlet, and the feed inlet is fixedly connected to the pre-reserved opening on the upper right side of the mixing device through the rectangular frame.

[0009] Furthermore, a liquid storage tank is fixedly connected to the outside of the outer shell, and a vane pump is connected to the liquid storage tank. A liquid outlet is provided on the upper part of the vane pump, and a nozzle is connected to the liquid outlet through a bend. The round end of the nozzle is installed in the reserved holes inside the inner liner and the outer shell. The nozzle passes through the reserved holes on the outer shell and the inner liner and extends into the interior of the inner liner, thereby constructing a complete liquid delivery and spraying path.

[0010] Preferably, an outer cover is installed on the upper part of the outer shell to close the top of the device. A rectangular notch is reserved on the right side of the outer cover. The upper position of the feed inlet corresponds to and is aligned with the rectangular notch reserved on the right side of the outer cover to ensure unobstructed feeding.

[0011] Preferably, the stirring device is installed in the middle of the inner tank, and the stirring blades are connected to the central shaft and can drive the stirring blades to rotate freely around the central shaft, so as to ensure that the material located in the center of the inner tank can be fully turned over.

[0012] Preferably, the liquid storage tank is equipped with a straight pipe inside. The upper end of the straight pipe is fixedly connected to the lower part of the vane pump. The entire straight pipe is inserted into the upper hole of the liquid storage tank and placed inside the liquid storage tank for drawing liquid from the bottom of the tank.

[0013] Preferably, the lower part of the vane pump is fixedly connected to the hole in the liquid storage tank for stable support, and the two ends of the bend are respectively airtightly connected to the liquid outlet on the upper part of the vane pump and the tail end of the nozzle to form a connected fluid channel.

[0014] Preferably, the upper part of the storage tank is provided with a lid, which is movably connected to the top opening of the storage tank, so that the operator can open the lid to add the phage solution to the storage tank.

[0015] Preferably, the nozzle is installed through the side wall of the outer shell and the inner liner, so that the phage solution stored in the storage tank can flow directly into the material surface inside the inner liner through the nozzle.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problems of difficulty in effectively biologically intervening in the deep internal materials and uneven liquid addition in the existing pig manure composting process by setting a liquid storage tank on the outside of the device in conjunction with a vane pump and a nozzle structure extending into the inner tank. It achieves the effect of accurately and continuously spraying specific bacteriophage solution on the surface and inside of the compost material, using the specific lysis effect of bacteriophage to kill antibiotic-resistant bacteria from the source, and effectively reducing the risk of biological contamination in compost products.

[0018] 2. This utility model, by adopting a hollow triangular structure for the stirring blades, solves the problems of low mixing efficiency, small contact area, and high resistance of traditional solid or flat stirring blades for high-viscosity pig manure materials. It significantly increases the contact geometric area between the blades and the material, reduces the stirring resistance, and generates more complex fluid disturbances, ensuring thorough mixing of the three phases of bacteriophage solution, oxygen, and pig manure materials, thereby improving the aerobic fermentation efficiency and antibiotic degradation rate.

[0019] 3. This utility model solves the problems of material easily scattering into the gaps between the device layers and being difficult to clean, as well as insufficient oxygen supply in the early stages of composting, by setting a feed inlet with rotating blades and a matching protective cover structure on the upper part of the mixing device. It achieves the effect of realizing automated continuous feeding, effectively blocking material splashing by using the protective cover, and passively drawing fresh air from the outside into the device through the rotation of the feed blades, providing a basic oxygen source for aerobic microorganisms, and ensuring the cleanliness and reaction stability of the device operation. Attached Figure Description

[0020] Figure 1 This is a perspective view of the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model.

[0021] Figure 2 This is a cross-sectional view of the outer shell of the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model.

[0022] Figure 3 This is a cross-sectional view of the inner liner of the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model.

[0023] Figure 4 This is a split view of the inner liner of the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model.

[0024] Figure 5 This is a split view of the liquid storage tank in the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model;

[0025] Figure 6 This is a split view of the feed inlet of the aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention proposed in this utility model.

[0026] Legend:

[0027] 1. Outer shell; 2. Outer cover; 3. Feed inlet; 4. Protective cover; 5. Bend; 6. Vane pump; 7. Storage tank; 8. Inner liner; 9. Motor; 10. Stirring device; 11. Nozzle; 12. Base; 13. Liquid outlet; 14. Straight pipe; 15. Tank cover; 16. Fixing ring; 17. Central shaft. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model. Example

[0029] Please refer to Figures 1 to 6 This utility model provides an aerobic composting device for antibiotic-contaminated pig manure based on phage intervention, which aims to solve the technical problems of the lack of effective phage uniform intervention methods and the low antibiotic degradation efficiency caused by insufficient material mixing in the existing pig manure composting process.

[0030] like Figure 1 and Figure 2As shown, the main structure of the aerobic composting device for antibiotic-contaminated pig manure based on phage intervention includes a base 12 and a stirring device 10 fixedly connected to the upper part of the base 12. The stirring device 10 is firmly installed on the upper surface of the base 12 as the core support and power transmission component. The base 12 is used to provide a stable support foundation for the entire device and prevent the device from tipping over or shifting during operation. An inner liner 8 is provided on the outside of the stirring device 10. The inner liner 8 is used to contain the pig manure material to be treated and to serve as the main reaction site for aerobic fermentation. An outer shell 1 is installed on the outside of the inner liner 8. The outer shell 1 is used to protect and support the inner liner 8 and form the outermost protective structure of the device.

[0031] A fixing ring 16 is provided between the outer shell 1 and the inner liner 8. The fixing ring 16 serves as a connecting medium and fills the space between the outer shell 1 and the inner liner 8. The inner side of the fixing ring 16 is fixedly connected to the outer side of the inner liner 8, and the outer side of the fixing ring 16 is fixedly connected to the inner side of the outer shell 1. The fixing ring 16 securely suspends or supports the inner liner 8 inside the outer shell 1, ensuring the concentricity and structural rigidity of the inner and outer double-layer structure. An outer cover 2 is installed on the upper part of the outer shell 1. The outer cover 2 is used to close the top of the device to form a relatively independent reaction space, prevent material from splashing out and maintain the internal fermentation environment. A rectangular notch is reserved on the right edge of the outer cover 2. The rectangular notch is to accommodate the installation position of the feeding component and ensure the compactness and sealing fit of the overall structure. The device as a whole constructs a stable double-layer cavity aerobic composting base platform through the above components.

[0032] To solve the above-mentioned technical problems, the core of the technical solution in this embodiment lies in the optimized design of the internal structure of the stirring device 10 and the specific matching relationship of the feeding components. Please refer to the following for details. Figure 3 and Figure 4 The stirring device 10 is installed in the middle of the inner tank 8. A central shaft 17 is rotatably connected to the upper middle position of the stirring device 10. The central shaft 17, as the core component for power transmission, extends vertically into the interior of the inner tank 8. Stirring blades are fixedly connected to the outer wall of the central shaft 17. The stirring blades can rotate freely inside the inner tank 8 under the drive of the central shaft 17. The stirring blades of the stirring device 10 adopt a special hollow triangular structure design. Compared with traditional solid or flat blades, the hollow triangular structure can generate more complex fluid disturbances during rotation. This not only effectively increases the contact area between the blades and the pig manure material, making the material more thoroughly and evenly mixed, but also reduces the running resistance during the stirring process and promotes the penetration and distribution of oxygen inside the material, creating favorable conditions for aerobic fermentation.

[0033] At the same time, in order to achieve automated feeding and prevent materials from scattering and contaminating the equipment during transportation, such as Figure 6As shown, the upper part of the mixing device 10 integrates a feeding assembly. The upper part of the mixing device 10 is provided with a feeding port 3. The feeding port 3 is equipped with specially designed feeding blades. The feeding blades are rotatably connected to the output shaft of the motor 9 located on the left side of the feeding port 3 through a drive shaft. The motor 9 serves as a power source to drive the feeding blades to rotate, continuously conveying the pig manure to be treated from the outside to the inner liner 8 through a spiral propulsion or agitation. At the same time, the rotating blades can also draw in fresh air from the outside to supplement oxygen. The feeding port 3 is covered by a protective cover 4, and the feeding port 3 is installed inside the protective cover 4. The bottom surface of the protective cover 4 is fixedly connected to the upper right side of the mixing device 10. The protective cover 4 can effectively block materials that are accidentally spilled from the feeding port 3, preventing materials from falling into the interlayer space between the outer cover 2 and the upper part of the mixing device 10 and causing accumulation or contamination. In addition, a rectangular frame is integrally set or welded to the bottom of the feeding port 3. The feeding port 3 is fixedly connected to the opening reserved on the upper right side of the mixing device 10 through the rectangular frame, ensuring the stability and accuracy of the feeding channel.

[0034] Based on the above embodiments, in order to achieve precise delivery and intervention of phage solution in compost materials, please refer to... Figure 5 The outer casing 1 is fixedly connected to a liquid storage tank 7, which is used to store specific phage solutions. A straight pipe 14 is installed inside the liquid storage tank 7. The upper end of the straight pipe 14 is fixedly connected to the lower part of the vane pump 6. The straight pipe 14 is vertically inserted into the pre-reserved hole in the upper part of the liquid storage tank 7 and placed deep inside the liquid storage tank 7 to draw liquid. The lower part of the vane pump 6 is fixedly connected to the hole in the upper part of the liquid storage tank 7 to achieve a stable installation of the pump body structure. The vane pump 6, as the power source for liquid transportation, is arranged on the top of the liquid storage tank 7.

[0035] Furthermore, regarding the liquid piping connection and injection structure, such as Figure 1 and Figure 2 As shown, the vane pump 6 is provided with a liquid outlet 13 on the upper part. The liquid outlet 13 is connected to a nozzle 11 through a bend 5. The two ends of the bend 5 are tightly connected to the liquid outlet 13 on the upper part of the vane pump 6 and the tail end of the nozzle 11, respectively. The bend 5 forms a liquid channel from the external liquid storage tank 7 to the internal reaction chamber. The round end of the nozzle 11 is installed in the coaxial hole reserved inside the inner liner 8 and the outer shell 1. The nozzle 11 passes through the outer shell 1 and the inner liner 8 and extends into the inner liner 8, ensuring that the sprayed liquid can directly cover the material surface inside the inner liner 8.

[0036] In addition, to facilitate daily maintenance and replenishment of the solution, a cover 15 is provided on the upper part of the storage tank 7. The cover 15 is movably connected or snapped onto the top opening of the storage tank 7. The cover 15 can seal the storage tank 7 to prevent external impurities from entering and contaminating the phage solution. At the same time, it allows operators to open the cover 15 to add new phage preparations into the storage tank 7, thereby ensuring that the entire phage-based antibiotic-contaminated pig manure aerobic composting device can continuously carry out biological intervention treatment.

[0037] Working Principle: Before the device is put into use for composting, the assembly and positioning of the internal core components must be completed. First, the mixing device 10 is installed in the middle area inside the inner tank 8, ensuring that the mixing device 10 is at the geometric center of the inner tank 8 to ensure uniform mixing. The mixing blades of the mixing device 10 are rotatably connected to a central shaft 17 at the upper middle position of the mixing device 10. The central shaft 17 serves as a fulcrum for rotation, allowing the mixing blades to rotate freely around the central shaft 17. The inner side of the outer shell 1 is fitted onto the outer side of the inner tank 8. The interlayer between the outer shell 1 and the inner tank 8 is reinforced by a fixing ring 16. The inner surface of the fixing ring 16 is flush with the inner tank. 8. The outer surface is fixedly connected. The round tube end of the nozzle 11 is precisely aligned and installed in the coaxial hole reserved inside the inner liner 8 and the outer shell 1. The blade inside the feed inlet 3 is rotatably connected to the output end of the motor 9 on the left side of the feed inlet 3 through the drive shaft. The motor 9 provides rotational power for feeding. The bottom rectangular frame structure of the feed inlet 3 is fixedly connected to the reserved opening on the upper right side of the stirring device 10. The bottom surface of the protective cover 4 is fixedly connected to the upper right side of the stirring device 10. The feed inlet 3 is installed inside the protective cover 4. The stirring device 10 is supported on the upper part of the base 12. The base 12 provides stable support for the overall structure. The installation of the feed inlet 3 and the core reaction chamber is now complete.

[0038] The installation process of the liquid storage tank 7 and liquid pipeline must ensure airtightness. First, fix the upper end of the straight pipe 14 to the lower inlet of the vane pump 6. Insert the straight pipe 14 vertically into the upper hole of the liquid storage tank 7 and place it at the bottom of the liquid storage tank 7. Fix the lower part of the vane pump 6 in the upper hole of the liquid storage tank 7 to fix the pump body. The two ends of the bent pipe 5 are airtightly connected to the upper outlet 13 of the vane pump 6 and the tail end of the nozzle 11, respectively. The bent pipe 5 forms a liquid transmission channel from the external liquid storage tank 7 to the internal inner tank 8. Finally, install the lower part of the outer cover 2 onto the upper part of the outer shell 1 for sealing. During installation, pay attention to the fact that the upper part of the feed inlet 3 must be precisely aligned with the rectangular notch reserved on the right side of the outer cover 2. Fix the liquid storage tank 7 to the outer side of the outer shell 1 to complete the overall assembly and debugging of the device.

[0039] When the device is in operation, the motor 9 is started. The motor 9 drives the internal blades of the feed inlet 3 to rotate at high speed. The rotating blades generate suction and thrust to draw the external pig manure material into the device. During this process, the protective cover 4 plays a key role in shielding. The protective cover 4 can effectively prevent the material from accidentally falling into the gap between the outer cover 2 and the upper part of the mixing device 10 after entering the feed inlet 3, ensuring that all the material falls accurately into the inner liner 8. At the same time, during the process of the material entering the inner liner 8, the rotating blades of the feed inlet 3 will bring in fresh air from the outside. The passive intake of outside air can provide a basic oxygen source for the aerobic microorganisms in the inner liner 8, creating reaction conditions for aerobic composting.

[0040] During or at a specific stage of the composting reaction, the operator opens the lid 15 and adds a specific phage solution to the storage tank 7. The vane pump 6 is then activated, generating negative pressure to draw the phage solution from the storage tank 7 through the straight pipe 14. After being pressurized by the vane pump 6, the solution flows out from the outlet 13, along the curved pipe 5 through the pre-reserved holes in the outer shell 1 and the inner liner 8, and finally flows into the material surface inside the inner liner 8 via the nozzle 11 through atomization or spraying. Simultaneously, the stirring device 10 continuously rotates in a circular motion around the central axis 17 within the inner liner 8. The blades of the stirring device 10 feature a special hollow triangular design, which significantly increases the contact area between the blades and the material, resulting in more thorough mixing. The phage solution flowing from the nozzle 11 is evenly mixed and dispersed into the pig manure being stirred, ensuring sufficient contact between the phage and antibiotic-resistant bacteria. This utilizes the specific lysis effect of the phage to effectively reduce the risk of contamination of the material in the inner liner 8 by antibiotic-resistant bacteria, thus completing the harmless treatment.

Claims

1. An aerobic composting device for antibiotic-contaminated pig manure based on bacteriophage intervention, comprising: The base (12), the stirring device (10) fixedly connected to the upper part of the base (12), the inner liner (8) installed outside the stirring device (10), the outer shell (1) installed outside the inner liner (8), and the fixing ring (16) set between the outer shell (1) and the inner liner (8), with the inner side of the fixing ring (16) fixedly connected to the outer side of the inner liner (8). Its features are, The middle of the upper part of the stirring device (10) is rotatably connected to the central shaft (17). The stirring device (10) is equipped with stirring blades. The stirring blades of the stirring device (10) are hollow triangular structures, which are used to increase the contact area with the material. The stirring blades are fixedly connected to the outer wall of the central shaft (17) and rotate. The stirring device (10) is provided with a feed inlet (3) and a protective cover (4) at the top. The feed inlet (3) is provided with blades. The protective cover (4) is fixedly connected to a motor (9) on the outside. The blades in the feed inlet (3) are rotatably connected to the output shaft of the motor (9) through a transmission shaft. The feed inlet (3) is installed inside the protective cover (4). The bottom surface of the protective cover (4) is fixedly connected to the upper right side of the stirring device (10). A rectangular frame is provided at the bottom of the feed inlet (3). The feed inlet (3) is fixedly connected to the opening reserved on the upper right side of the stirring device (10) through the rectangular frame. The outer shell (1) is fixedly connected to a liquid storage tank (7), the liquid storage tank (7) is connected to a vane pump (6), the vane pump (6) is provided with an outlet (13) at the top, the outlet (13) is connected to a nozzle (11) through a bend (5), and the round end of the nozzle (11) is installed in the hole reserved inside the inner liner (8) and the outer shell (1).

2. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 1, characterized in that, The outer cover (2) is installed on the upper part of the outer shell (1). A rectangular notch is reserved on the right side of the outer cover (2). The upper part of the feed inlet (3) is aligned with the rectangular notch reserved on the right side of the outer cover (2).

3. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 1, characterized in that, The stirring device (10) is installed inside the middle of the inner liner (8), and the stirring blades are connected to the central shaft (17) and drive the stirring blades to rotate freely around the central shaft (17).

4. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 1, characterized in that, The liquid storage tank (7) is equipped with a straight pipe (14), and the upper end of the straight pipe (14) is fixedly connected to the lower part of the vane pump (6).

5. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 4, characterized in that, The straight tube (14) is inserted into the liquid storage tank (7) as a whole, and the upper hole is placed inside the liquid storage tank (7).

6. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 5, characterized in that, The lower part of the vane pump (6) is fixedly connected to the hole in the liquid storage tank (7), and the two ends of the bend (5) are respectively connected to the liquid outlet (13) on the upper part of the vane pump (6) and the tail end of the nozzle (11).

7. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 1, characterized in that, The upper part of the storage tank (7) is provided with a lid (15), and bacteriophages are added to the storage tank (7) by opening the lid (15).

8. The aerobic composting device for antibiotic-contaminated pig manure based on phage intervention according to claim 1, characterized in that, The nozzle (11) passes through the outer shell (1) and the inner liner (8) to reach the nozzle (11), so that the bacteriophage in the storage tank (7) flows into the inner liner (8) through the nozzle (11).

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