High-efficiency ex-situ fermentation bed and application thereof

Abstract

The application discloses a kind of high-efficiency ectopic fermentation bed and application, belong to fermentation bed technical field, including multiple splicing bottom plate, the lower side of the splicing bottom plate is equipped with support leg, the splicing bottom plate is equipped with multiple air holes, multiple The splicing bottom plate is mutually spliced and forms bed bottom by connecting piece, the outside of the bed bottom is equipped with fence, the fence inner wall is equipped with transverse clamping rod, the transverse clamping rod is clamped with liquid injection pipe network, the fence inner wall is equipped with liquid inlet, the liquid inlet one end with The liquid injection pipe network is communicated by hose between, the other end of the liquid inlet is connected to liquid pump, the liquid inlet of the liquid pump is connected to concentrated biogas liquid by pipeline, the present application is enhanced by air pipe on air hole and air hole on protective cover Oxygen content when fermentation, temperature is regulated for fermenting material by temperature regulating pipe, liquid injection pipe network provides appropriate fermentation humidity for fermenting material, to improve the fermentation efficiency and fermentation quality of fermenting material.

Description

Technical Field

[0001] This invention relates to the field of fermentation bed technology, specifically to a high-efficiency off-site fermentation bed and its application. Background Technology

[0002] Fermentation bed is an ecological farming technology based on microbial decomposition. Its core involves laying a bedding layer in the livestock shed composed of organic materials such as sawdust and rice husks, mixed with specialized microbial cultures. Livestock excrement falls onto this bedding, where the beneficial microbial flora rapidly decomposes and transforms it, resulting in zero wastewater and zero odor emissions.

[0003] This technology not only fundamentally solves the problem of pollution from livestock farming and eliminates the tedious labor of washing livestock pens, but also generates heat and keeps the pens dry. The decomposed bedding material can eventually be converted into high-quality organic fertilizer, realizing resource recycling. It is a typical environmentally friendly, cost-effective, and efficient green agricultural production technology.

[0004] In-situ fermentation beds are mainly used in animal pens. They ferment animal manure and generate heat to provide a relatively warm environment for animals in winter. However, the temperature on the in-situ fermentation bed varies with the weather and seasons. The open environment of the in-situ fermentation bed reduces fermentation efficiency. As animal activity and manure increase, the fermented material becomes increasingly compacted, leading to oxygen deficiency at the bottom. Because the living environment of the animals needs to be considered, the humidity cannot be too high. As a result, the temperature, humidity, and oxygen content of the fermented material in the in-situ fermentation bed are unstable, leading to low fermentation efficiency. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a high-efficiency ex-situ fermentation bed and its application.

[0006] The technical solution of the present invention is: a high-efficiency ex-situ fermentation bed, comprising multiple spliced ​​base plates, with supporting legs below each spliced ​​base plate, and multiple ventilation holes on each spliced ​​base plate. The multiple spliced ​​base plates are spliced ​​together to form a bed bottom by connectors. A barrier is provided on the outer side of the bed bottom, and a transverse clamping rod is provided on the inner wall of the barrier. A liquid spraying pipe network is clamped on the transverse clamping rod. A liquid inlet is provided on the inner wall of the barrier. One end of the liquid inlet is connected to the liquid spraying pipe network through a hose, and the other end of the liquid inlet is connected to a liquid pump. The liquid inlet of the liquid pump is connected to concentrated biogas slurry through a pipe.

[0007] Furthermore, the connector includes a groove on the surface of the splicing base plate and a connecting plate for connecting adjacent splicing base plates. The two ends of the connecting plate are respectively embedded in the grooves on the two adjacent splicing base plates, and the connecting plate is connected to the splicing base plate by a screw.

[0008] Instructions: After fermentation, the fermented material needs to be removed from the fermentation bed. The connecting plate is embedded in the groove, facilitating the cleaning of the fermented material at the bottom. Through the connection design of the groove, connecting plate, and screws, multiple spliced ​​base plates can be quickly and firmly assembled into bed bases of different sizes. The enclosure combined with the bed base forms a fermentation container. This modular design allows for flexible adjustment of the fermentation bed size, facilitating transportation, installation, and maintenance, and providing a basic platform for the realization of all subsequent functions.

[0009] Furthermore, the outer wall of the enclosure is provided with a hot water interface and a return interface. One end of the hot water interface is connected to a water heater through a hot water pipe, and the other end of the hot water interface is connected to a temperature regulating pipe. The other end of the temperature regulating pipe is connected to the return interface, and the other end of the return interface is connected to the water heater through a return pipe.

[0010] Explanation: The fermentation temperature is adjusted by heating the fermentation material through a temperature control tube and then heating the hot water in the temperature control tube through a water heater.

[0011] Furthermore, each of the vent holes is connected to a branch pipe below it. Half of the branch pipes are connected to a common air supply pipe at their ends, and the other half of the branch pipes are connected to a common hot air pipe at their ends. The hot air pipe is connected to a hot air blower at its end, and the air supply pipe is connected to an exhaust fan at its end.

[0012] Explanation: Hot air is supplied to the fermenting material through hot air pipes, while room temperature air is supplied through exhaust fans. For example, during fermentation in winter, when the outside temperature is low, directly introducing outside air will cause the temperature of the fermenting material to drop rapidly, resulting in a decrease in fermentation efficiency. Therefore, hot air needs to be delivered through the other half of the ventilation holes by a hot air blower to directly heat the bottom of the fermentation pile. At the same time, hot water circulates in the temperature control pipes around the bed to provide stable and uniform heat to the fermentation environment from the side, preventing excessive heat loss.

[0013] Furthermore, a vent pipe is plugged into the vent hole, and the outer wall of the vent pipe is provided with multiple vent holes.

[0014] Explanation: By increasing the contact area between the fermenting material and air through the aeration pipe, the gas supply efficiency of the fermentation bed is improved, thereby increasing the fermentation efficiency.

[0015] Furthermore, the enclosure is rotatably connected to multiple rotating shafts, each rotating shaft is equipped with a stirring rod, and the outer wall of the enclosure is equipped with multiple rotating motors for driving the rotating shafts to rotate.

[0016] Explanation: The rotating motor drives the rotating shaft, which in turn drives the stirring rod, thus turning the fermenting material and improving the uniformity of fermentation. This process achieves three objectives: first, it thoroughly mixes the sprayed biogas slurry with the material, adjusting the overall moisture content; second, it breaks up clumps, loosens the material, restores porosity, and facilitates ventilation and oxygen supply; and third, it makes the temperature and bacterial distribution of the material more uniform, avoiding localized anaerobic or overheating and accelerating the fermentation process.

[0017] Furthermore, a protective cover is provided above the fence, and an air outlet is provided at the top of the protective cover. The air outlet is connected to a suction fan through an exhaust pipe. The air outlet of the suction fan is connected to an external exhaust gas treatment system. The fence is provided with multiple ventilation holes.

[0018] Explanation: Exhaust is achieved through the vents on the protective cover, while ventilation holes enhance the oxygen content in the air above the fermenting material to improve fermentation efficiency. The top suction fan forcibly extracts the waste gases (such as ammonia, water vapor, and carbon dioxide) produced during fermentation, which not only improves the fermentation environment but, more importantly, creates an effective cross ventilation by coordinating with the bottom air supply, removing excess moisture and preventing the pile from becoming too wet.

[0019] Furthermore, each splicing base plate is embedded with a temperature sensor, an oxygen content sensor, and an FDR frequency domain reflectance method moisture content sensor, and the outer wall of the enclosure is equipped with a display that is electrically connected to the temperature sensor and the FDR frequency domain reflectance method moisture content sensor.

[0020] Description: The fermentation temperature, oxygen content, and moisture content of the fermenting material are detected by temperature sensors, oxygen content sensors, and FDR frequency domain reflectance method moisture content sensors to maintain a stable fermentation environment. After the operator obtains the data through the display, they can control it manually or automatically through preset programs.

[0021] Furthermore, the above-mentioned application of a high-efficiency off-site fermentation bed applies the fermentation bed to the field of biogas residue fermentation.

[0022] Note: Applying the above-mentioned high-efficiency off-site fermentation bed to the field of biogas residue fermentation technology results in good biogas residue fermentation effect and high fermentation efficiency.

[0023] Furthermore, the method for fermenting biogas residue using the above-mentioned high-efficiency ex-situ fermentation bed is characterized by comprising the following steps: S1. The spliced ​​bottom plates are spliced ​​together to form a bed bottom. A fence is installed on the outside of the bed bottom. The dehydrated biogas residue, rice husks, sawdust and compound microbial agent are mixed evenly in a mass ratio of 8:1:1:0.5 to form a fermentation material. The mixture is spread evenly on the bed bottom for fermentation. Air enters the fermentation material through the ventilation holes at the bottom of the spliced ​​bottom plates to provide sufficient oxygen for the fermentation. S2. The concentrated biogas slurry is pumped through a pump and sprayed onto the top of the fermentation material through the inlet port, hose, and spraying network. The moisture content of the fermentation material is adjusted to 40-50%, the fermentation temperature is 55-65℃, and the fermentation time is 8-9 days. After fermentation, the material is aged. During aging, the material is turned over every 7 days. The aging temperature is 25-40℃, and the moisture content of the fermentation material is reduced to 30-40%. The aging time is 15-20 days. The resulting organic fertilizer is obtained after aging.

[0024] Furthermore, the compound microbial agent is composed of the following components by mass percentage: 6.2-8.3% *Trichoderma koningii*, 4.1-6.4% white-rot fungi, 9.1-10.3% lactic acid bacteria, 4.5-6.2% yeast, 7.1-8.4% *Bacillus subtilis*, 3.1-4.2% nitrogen-fixing bacteria, 2.8-3.9% phosphate-solubilizing bacteria, 2.6-3.5% potassium-solubilizing bacteria, 3.8-8.7% EM bacteria, 11.2-16.8% common thermophilic actinomycetes, and the balance being thermophilic denitrifying Bacillus.

[0025] The beneficial effects of this invention are: (1) The present invention provides hot air and room temperature air to the fermenting material through hot air pipe and air supply pipe to ensure stable fermentation temperature of the fermenting material, enhances the oxygen content of the fermenting material during fermentation through the air vent pipe on the air vent and the ventilation hole on the protective cover, regulates the temperature of the fermenting material through the temperature regulating pipe, and provides appropriate fermentation humidity to the fermenting material through the liquid spraying network, thereby improving the fermentation efficiency and fermentation quality of the fermenting material.

[0026] (2) The multi-system synergy of the present invention ensures the best microbial growth environment, significantly accelerates the decomposition and maturation of organic matter, and can reuse concentrated biogas slurry as a source of nutrition and water, realizing the complete resource utilization of livestock waste and solving the problem of biogas slurry end-of-pipe treatment.

[0027] (3) The present invention adopts a closed or semi-closed design with negative pressure ventilation to collect and treat fermentation odors and harmful gases in a concentrated manner, avoiding secondary air pollution. The precise environmental control avoids the problems of "too dry, too wet, lack of oxygen, and uneven temperature" that are common in traditional composting, so that the final organic fertilizer produced is thoroughly decomposed, has stable composition, and is highly harmless.

[0028] (4) The present invention can achieve mechanization or automation of key processes such as spraying, stirring, ventilation and heating, which greatly reduces the labor intensity of workers and the dependence on skilled workers.

[0029] (5) The present invention is modular in design, which makes it adaptable to the needs of different scales and sites and easy to promote. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the splicing base plate structure of the present invention.

[0031] Figure 2 This is a top view of the structure of the present invention, showing the four adjacent splicing base plates being spliced ​​together.

[0032] Figure 3 This is a schematic diagram of the connection between the spray pipe network and the enclosure of the present invention.

[0033] Figure 4 This is a schematic diagram of the connection between the heat dissipation pipe and the splicing base plate of the present invention.

[0034] Figure 5 This is a schematic diagram of the connection between the rotating shaft and the enclosure of the present invention.

[0035] Among them, 1-splicing base plate, 11-support leg, 12-ventilation hole, 3-bed bottom, 4-enclosure, 41-horizontal clamping rod, 42-liquid inlet interface, 5-liquid spraying network, 51-hose, 52-liquid pump, 21-groove, 22-connecting plate, 23-screw, 43-hot water interface, 44-return interface, 45-hot water machine, 431-hot water pipe, 432-temperature regulating pipe, 441-return pipe, 121-branch pipe, 12 2-Gas supply pipe, 123-Hot air pipe, 124-Hot air blower, 125-Exhaust fan, 126-Gas dissipation pipe, 127-Gas dissipation hole, 46-Rotating shaft, 47-Stirring rod, 48-Rotating motor, 6-Protective cover, 61-Air outlet, 62-Exhaust pipe, 63-Suction fan, 64-Ventilation hole, 13-Temperature sensor, 14-Oxygen content sensor, 15-FDR frequency domain reflectance method moisture content sensor, 16-Display. Detailed Implementation

[0036] Example 1: like Figure 1 , Figure 2 As shown, a high-efficiency off-site fermentation bed includes 16 spliced ​​base plates 1. Support legs 11 are provided below the spliced ​​base plates 1. Multiple ventilation holes 12 are provided on the spliced ​​base plates 1. The 16 spliced ​​base plates 1 are spliced ​​together to form a bed bottom 3 by connectors 2. A fence 4 is provided on the outside of the bed bottom 3. A transverse clamping rod 41 is provided on the inner wall of the fence 4. A liquid spraying pipe network 5 is clamped on the transverse clamping rod 41. A liquid inlet 42 is provided on the inner wall of the fence 4. One end of the liquid inlet 42 is connected to the liquid spraying pipe network 5 through a hose 51. The other end of the liquid inlet 42 is connected to a liquid pump 52. The liquid inlet of the liquid pump 52 is connected to concentrated biogas slurry through a pipe.

[0037] The connector 2 includes a groove 21 on the surface of the splicing base plate 1 and a connecting plate 22 for connecting adjacent splicing base plates 1. The two ends of the connecting plate 22 are respectively embedded in the groove 21 on the two adjacent splicing base plates 1, and the connecting plate 22 is connected to the splicing base plate 1 by a screw 23.

[0038] After fermentation, the fermented material needs to be removed from the fermentation bed. The connecting plate 22 is embedded in the groove 21, facilitating the cleaning of the fermented material at the bottom. Through the connection design of the groove 21, connecting plate 22, and screw 23, the spliced ​​base plate can be quickly and firmly assembled into the bed bottom 3. The enclosure 4 combines with the bed bottom 3 to form a fermentation container. This modular design allows for flexible adjustment of the size of the fermentation bed, facilitating transportation, installation, and maintenance, and providing a basic platform for the realization of all subsequent functions.

[0039] Example 2: The difference between this embodiment and embodiment 1 is that each splicing base plate 1 in this embodiment is embedded with a temperature sensor 13, an oxygen content sensor 14, and an FDR frequency domain reflectance method moisture content sensor 15, and the outer wall of the enclosure 4 is provided with a display 16 that is electrically connected to the temperature sensor 13 and the FDR frequency domain reflectance method moisture content sensor 15.

[0040] Compared with Example 1, this embodiment uses a temperature sensor 13, an oxygen content sensor 14, and an FDR frequency domain reflectance method moisture content sensor 15 to detect the fermentation temperature, oxygen content, and moisture content of the fermenting material in order to maintain a stable fermentation environment. After the operator obtains the data through the display 16, they can control it manually or automatically through a preset program.

[0041] Example 3: like Figure 3 As shown, the difference between this embodiment and embodiment 2 is that in this embodiment, a protective cover 6 is provided above the enclosure 4, and an air outlet 61 is provided on the top of the protective cover 6. The air outlet 61 is connected to a suction fan 63 through an exhaust pipe 62. The air outlet 61 of the suction fan 63 is connected to an external exhaust gas treatment system. Multiple ventilation holes 64 are provided on the enclosure 4.

[0042] Compared with Example 2, in this embodiment, exhaust is carried out through the air outlet 61 on the protective cover 6, and the oxygen content in the air on the surface of the fermenting material is increased through the ventilation hole 64 to improve the fermentation efficiency of the fermenting material. The top suction fan 63 forcibly extracts the waste gas (such as ammonia, water vapor, and carbon dioxide) generated during fermentation, which not only improves the fermentation environment, but more importantly, in combination with the bottom air supply, it forms an effective through airflow, which removes excess moisture and prevents the pile from becoming too wet.

[0043] Example 4: The difference between this embodiment and embodiment 3 is that, in this embodiment, the outer wall of the enclosure 4 is provided with a hot water interface 43 and a return interface 44. One end of the hot water interface 43 is connected to a water heater 45 through a hot water pipe 431, and the other end of the hot water interface 43 is connected to a temperature regulating pipe 432. The other end of the temperature regulating pipe 432 is connected to the return interface 44, and the other end of the return interface 44 is connected to the water heater 45 through a return pipe 441.

[0044] Compared with Example 3, and compared with Example 2, in this embodiment, the fermentation material is heated by a temperature control tube 432, and then the hot water in the temperature control tube 432 is heated by a water heater 45, thereby adjusting the fermentation temperature of the fermentation material.

[0045] Example 5: like Figure 4 As shown, the difference between this embodiment and embodiment 4 is that, in this embodiment, each vent hole 12 is connected to a branch pipe 121 below it. Half of the branch pipes 121 are connected to a common air supply pipe 122 at their ends, and the other half of the branch pipes 121 are connected to a common hot air pipe 123 at their ends. The hot air pipe 123 is connected to a hot air blower 124 at its end, and the air supply pipe 122 is connected to an exhaust fan 125 at its end.

[0046] Compared with Example 4, this embodiment provides hot air to the fermenting material through hot air pipe 123 and room temperature air to the fermenting material through exhaust fan 125. For example, during fermentation in winter, the outside temperature is low, and directly introducing outside air will cause the temperature of the fermenting material to drop rapidly, resulting in a decrease in fermentation efficiency. Therefore, hot air blower 124 is needed to send hot air through the other half of the vent 12 to directly heat the bottom of the fermentation pile. At the same time, hot water circulates in the temperature regulating pipe 432 around the bed to provide stable and uniform heat to the fermentation environment from the side and prevent heat loss from being too fast.

[0047] Example 6: The difference between this embodiment and embodiment 5 is that, in this embodiment, a vent pipe 126 is plugged in above the vent hole 12, and the outer wall of the vent pipe 126 is provided with multiple vent holes 127.

[0048] Compared to Example 5, this embodiment increases the contact area between the fermented material and air by using the aeration pipe 126, thereby improving the gas supply efficiency of the fermentation bed and achieving the goal of improving fermentation efficiency.

[0049] Example 7: like Figure 5As shown, the difference between this embodiment and embodiment 5 is that in this embodiment, multiple rotating shafts 46 are rotatably connected to the enclosure 4, a stirring rod 47 is provided on the rotating shaft 46, and multiple rotating motors 48 are provided on the outer wall of the enclosure 4 to drive the rotating shafts 46 to rotate.

[0050] Compared to Example 5, this embodiment uses a rotating motor 48 to drive the rotating shaft 46 to rotate, which in turn drives the stirring rod 47 to rotate, thereby turning the fermented material and improving the uniformity of fermentation. This process achieves three objectives: first, to fully mix the sprayed biogas slurry with the material and adjust the overall moisture content; second, to break up clumps, loosen the material, restore porosity, and facilitate ventilation and oxygen supply; and third, to make the temperature and bacterial distribution of each part of the material more uniform, avoid local anaerobic or overheating, and accelerate the fermentation process.

[0051] Example 8: This embodiment applies a high-efficiency off-site fermentation bed from Embodiment 2 to the field of biogas residue fermentation. The method for biogas residue fermentation using a high-efficiency off-site fermentation bed from Embodiment 2 includes the following steps: S1. The spliced ​​bottom plates are spliced ​​together to form a bed bottom 3. A fence 4 is installed on the outside of the bed bottom 3. The dehydrated biogas residue, rice husks, sawdust and compound microbial agent are mixed evenly in a mass ratio of 8:1:1:0.5 to form a fermentation material. The mixture is spread evenly on the bed bottom 3 for fermentation. Air enters the fermentation material through the air vents 12 at the bottom of the spliced ​​bottom plate 1 to provide sufficient oxygen for the fermentation of the fermentation material. S2. The concentrated biogas slurry is pumped through pump 52 and sprayed onto the top of the fermentation material through inlet 42, hose 51, and spray network 5. The moisture content of the fermentation material is adjusted to 40%, the fermentation temperature is 55℃, and the fermentation time is 8 days. After fermentation, the material is aged. During aging, the material is turned over every 7 days. The aging temperature is 25℃, and the moisture content of the fermentation material is reduced to 30% for 15 days. The organic fertilizer is obtained after aging.

[0052] The compound microbial agent consists of the following components by weight percentage: 6.2% Trichoderma koningii, 4.1% white rot fungi, 9.1% lactic acid bacteria, 4.5% yeast, 7.1% Bacillus subtilis, 3.1% nitrogen-fixing bacteria, 2.8% phosphate-solubilizing bacteria, 2.6% potassium-solubilizing bacteria, 3.8-8% EM bacteria, 11.2% common thermophilic actinomycetes, and the balance being thermophilic denitrifying Bacillus.

[0053] Example 9: The difference between this embodiment and embodiment 8 is that in this embodiment, the moisture content of the fermented material is adjusted to 45%, the fermentation temperature is 60℃, the fermentation time is 8.5 days, and after fermentation, it is aged. During the aging period, it is turned over once every 7 days, the aging temperature is 30℃, the moisture content of the fermented material is reduced to 35%, the aging time is 18 days, and the organic fertilizer is obtained after aging.

[0054] The compound microbial agent consists of the following components by weight percentage: 7.1% Trichoderma koningii, 5.3% white rot fungi, 9.8% lactic acid bacteria, 5.1% yeast, 7.3% Bacillus subtilis, 4.1% nitrogen-fixing bacteria, 3.2% phosphate-solubilizing bacteria, 3.1% potassium-solubilizing bacteria, 5.3% EM bacteria, 13.28% common thermophilic actinomycetes, and the balance being thermophilic denitrifying Bacillus.

[0055] Example 10: The difference between this embodiment and embodiment 8 is that in this embodiment, the moisture content of the fermented material is adjusted to 40%, the fermentation temperature is 65℃, the fermentation time is 9 days, and after fermentation, it is aged. During the aging period, it is turned over once every 7 days, the aging temperature is 40℃, the moisture content of the fermented material is reduced to 40%, and the aging time is 20 days. After aging, organic fertilizer is obtained.

[0056] The compound microbial agent consists of the following components by weight percentage: 8.3% Trichoderma koningii, 6.4% white rot fungi, 10.3% lactic acid bacteria, 6.2% yeast, 8.4% Bacillus subtilis, 0.2% nitrogen-fixing bacteria, 3.9% phosphate-solubilizing bacteria, 3.5% potassium-solubilizing bacteria, 8.7% EM bacteria, 16.8% common thermophilic actinomycetes, and the balance being thermophilic denitrifying Bacillus.

[0057] Experimental example: The manure produced in the same pigpen was divided into two parts. One part was composted using a static composting method, and the other part was fermented using the high-efficiency off-site fermentation bed of the present invention. The experimental data are shown in Table 1. Table 1: Comparison of Fermentation Effects between Traditional Static Composting and High-Efficiency Off-Site Fermentation Bed

[0058] Conclusion: Through the above synergistic effect analysis and data comparison, it can be seen that the present invention, through ingenious system integration and automated control, has successfully solved the core pain points of traditional composting methods, such as low efficiency, poor environment and unstable quality, and has achieved high-quality conversion of biogas residue waste in an efficient, environmentally friendly and resource-oriented manner.

[0059] The liquid pump 52, hot water machine 45, hot air blower 124, exhaust fan 125, rotary motor 48, suction fan 63, temperature sensor 13, oxygen content sensor 14, FDR frequency domain reflection method moisture content sensor 15, and display 16 used in the above embodiments are all commercially available products. As long as they can achieve the functions of the present invention, they are acceptable. Those skilled in the art can choose to use them based on common sense, and no special limitations are made here.

Claims

1. A high-efficiency in-situ fermentation bed, characterized in that, The system includes multiple splicing base plates (1), with support legs (11) below each splicing base plate (1). Multiple ventilation holes (12) are provided on each splicing base plate (1). The multiple splicing base plates (1) are spliced ​​together to form a bed bottom (3) through connectors (2). A fence (4) is provided on the outside of the bed bottom (3). A transverse clamping rod (41) is provided on the inner wall of the fence (4). A liquid spraying network (5) is clamped on the transverse clamping rod (41). An inlet port (42) is provided on the inner wall of the fence (4). One end of the inlet port (42) is connected to the liquid spraying network (5) through a hose (51). The other end of the inlet port (42) is connected to a liquid pump (52). The inlet of the liquid pump (52) is connected to concentrated biogas slurry through a pipe.

2. The high-efficiency off-site fermentation bed as described in claim 1, characterized in that, The connector (2) includes a groove (21) on the surface of the splicing base plate (1) and a connecting plate (22) for connecting adjacent splicing base plates (1). The two ends of the connecting plate (22) are respectively embedded in the groove (21) on the two adjacent splicing base plates (1). The connecting plate (22) and the splicing base plate (1) are connected by a screw (23).

3. The high-efficiency ex-situ fermentation bed as described in claim 1, characterized in that, The outer wall of the enclosure (4) is provided with a hot water interface (43) and a return interface (44). One end of the hot water interface (43) is connected to a water heater (45) through a hot water pipe (431). The other end of the hot water interface (43) is connected to a temperature regulating pipe (432). The other end of the temperature regulating pipe (432) is connected to the return interface (44). The other end of the return interface (44) is connected to the water heater (45) through a return pipe (441).

4. The high-efficiency off-site fermentation bed as described in claim 1, characterized in that, Each of the ventilation holes (12) is connected to a branch pipe (121) below it. Half of the branch pipes (121) are connected to a common air supply pipe (122) at the end, and the other half of the branch pipes (121) are connected to a common hot air pipe (123) at the end. The hot air pipe (123) is connected to a hot air blower (124) at the end, and the air supply pipe (122) is connected to an exhaust fan (125) at the end.

5. The high-efficiency off-site fermentation bed as described in claim 4, characterized in that, A vent pipe (126) is plugged into the upper part of the vent hole (12), and the outer wall of the vent pipe (126) is provided with multiple vent holes (127).

6. The high-efficiency ex-situ fermentation bed as described in claim 4, characterized in that, The enclosure (4) is rotatably connected to multiple rotating shafts (46), and a stirring rod (47) is provided on the rotating shaft (46). The outer wall of the enclosure (4) is provided with multiple rotating motors (48) for driving the rotating shafts (46) to rotate.

7. The high-efficiency off-site fermentation bed as described in claim 1, characterized in that, The enclosure (4) is equipped with a protective cover (6) on top. The top of the protective cover (6) is equipped with an air outlet (61). The air outlet (61) is connected to a suction fan (63) through an exhaust pipe (62). The air outlet (61) of the suction fan (63) is connected to an external exhaust gas treatment system. The enclosure (4) is equipped with multiple ventilation holes (64).

8. The high-efficiency off-site fermentation bed as described in claim 1, characterized in that, Each splicing base plate (1) is embedded with a temperature sensor (13), an oxygen content sensor (14), and an FDR frequency domain reflectance method moisture content sensor (15). The outer wall of the enclosure (4) is provided with a display (16) that is electrically connected to the temperature sensor (13) and the FDR frequency domain reflectance method moisture content sensor (15).

9. The application of a high-efficiency ex-situ fermentation bed as described in any one of claims 1-8, characterized in that, The fermentation bed is applied to the field of biogas residue fermentation.

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