An aerobic treatment system for livestock and poultry excrement and sewage

Abstract

The invention discloses an aerobic treatment system for livestock and poultry excrement and urine sewage, which comprises: a sewage collection tank, one side of which is connected to a sewage pipe through a pipeline; a solid-liquid separation system, one end of which is provided with a sewage inlet, the sewage inlet is connected to the sewage collection tank through a pumping pump, one side of the solid-liquid separation system is provided with a sewage pipe for discharging liquid sewage passing through a screen, and the other side of the solid-liquid separation system is provided with a feed pipe; a composting mechanism is arranged outside the solid-liquid separation system and connected to the feed pipe; a static tank is arranged on one side of the solid-liquid separation system, the outside of the static tank is connected to the sewage pipe through a sewage pump 1, the bottom channel of the static tank is connected to an external membrane filtration system, and the upper channel of the static tank is connected to a centrifugal separator through a sewage pump 2; an aerobic fermentation system is connected to a clarifying separation channel of the centrifugal separator, and the turbid liquid separation channel of the centrifugal separator is connected to the external membrane filtration system.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, in particular to an aerobic treatment system for livestock and poultry excrement and urine sewage. Background Art

[0002] At present, for the livestock and poultry manure and urine sewage treatment method, such as the invention patent with patent number CN108545884A, the aerobic microorganisms in the four-stage aerobic device are used to filter the suspended matter in the sewage, so that the treated sewage can fully enter the biological oxidation pond. However, since the four-stage aerobic device is usually composed of multiple treatment units, it occupies a large space. At the same time, the four-stage aerobic device has limited ability to remove suspended matter. Some particulate matter is not effectively intercepted and enters the oxidation pond, which directly affects the growth and treatment effect of microorganisms in the pond, causing excessive reproduction of algae and affecting the stability of water quality. In particular, the four-stage aerobic device requires continuous oxygen supply, resulting in high energy consumption and increased operating costs.

[0003] Therefore, it is necessary to provide an aerobic treatment system for livestock and poultry manure and sewage to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: an aerobic treatment system for livestock and poultry excrement and urine sewage, comprising:

[0005] A sewage collection tank, one side of which is connected to a sewage pipe through a pipeline, and is used for centralized collection of livestock and poultry feces and urine sewage;

[0006] A solid-liquid separation system, one end of which is provided with a sewage inlet, the sewage inlet is connected to the sewage collection tank through a pumping pump, the solid-liquid separation system uses spiral blades to squeeze fecal sewage, one side of the solid-liquid separation system is provided with a sewage pipe for discharging liquid sewage passing through the screen, and the other side is provided with a feeding pipe, and solid feces are pushed to the feeding pipe by the spiral blades;

[0007] A composting mechanism is arranged outside the solid-liquid separation system and is connected to the feeding pipe;

[0008] A static tank is arranged on one side of the solid-liquid separation system, the outside of the static tank is connected to the sewage pipe through a sewage pump 1, the bottom channel of the static tank is connected to the external membrane filtration system, and the upper channel of the static tank is connected to the centrifugal separator through a sewage pump 2;

[0009] an aerobic fermentation system connected to a clarification separation channel of a centrifugal separator, wherein the turbid liquid separation channel of the centrifugal separator is connected to an external membrane filtration system;

[0010] The aerobic fermentation system comprises:

[0011] The fermentation tank is made of stainless steel, and a main shaft seat is rotatably arranged in the middle of the fermentation tank;

[0012] An upper pressing plate is transversely arranged in the fermentation tank, the upper pressing plate is sealingly and slidably connected in the fermentation tank, two telescopic driving parts are symmetrically distributed on the fermentation tank, and the telescopic ends of the telescopic driving parts are connected to the upper pressing plate;

[0013] Aeration blades are circumferentially distributed on the main shaft seat, and the aeration blades stir the sewage in the fermentation tank during the rotational motion of the main shaft seat; and

[0014] The microporous aeration components are arranged and distributed on the upper pressure plate, and the lower ends of the microporous aeration components vertically penetrate into the sewage.

[0015] Furthermore, preferably, each of the microporous aeration components independently mixes an appropriate amount of oxygen into the sewage in the fermentation tank to increase oxygen dissolution.

[0016] Furthermore, preferably, a water quality monitoring system is provided in the fermentation tank, and the water quality monitoring system continuously monitors the concentration of organic matter in the sewage and obtains the proportion of organic matter in the sewage; a central control system is provided outside the water quality monitoring system, and the central control system analyzes the oxygen demand for microbial degradation based on the obtained proportion of organic matter in the sewage, and the microporous aeration component supplies oxygen according to the oxygen demand.

[0017] Further, as a preference, the microporous aeration assembly comprises:

[0018] An aeration tank, a sealing seat is fixed on the top thereof, a guide cavity is arranged in the sealing seat, and an oxygen pipe is vertically connected to the guide cavity;

[0019] A support rod frame is vertically fixed on one side of the aeration tank, a threaded rod is arranged outside the support rod frame in parallel and relatively rotatable, a slider is slidably arranged on the support rod frame, the slider is meshed with the threaded rod through thread meshing, a driving part is fixed on the aeration tank, and an output end of the driving part is fixed to the threaded rod;

[0020] A fixed ring frame, a microporous disk is fixed at the center of the inner part thereof, a plurality of flow holes are distributed on the annular side wall of the microporous disk, a collecting pipe is vertically connected to the middle of the fixed ring frame, the collecting pipe is connected to the flow holes of the microporous disk, the collecting pipe is symmetrically connected to soft pipes, one end of the soft pipes is respectively connected to the two sides of the guide cavity;

[0021] Impellers, two of which are arranged on the left and right, both of which are rotatably connected in the guide cavity, transmission teeth are fixed on the impellers, the transmission teeth are meshed with each other, a motor is installed on the sealing seat, and the output end of the motor is connected with the transmission teeth through gear meshing for transmission;

[0022] A main pipe is vertically connected to the middle of the lower end surface of the guide cavity, and one end of the main pipe is connected to the aeration tank;

[0023] The aeration mechanism is arranged in the aeration tank, and a discharge port is arranged at the bottom of the aeration tank.

[0024] Further, as a preference, the impeller on the relatively left side rotates counterclockwise, the cross section of the impeller is a herringbone structure, and the two impellers move in an interlaced and coordinated manner with each other and fit with the inner wall of the sealing seat.

[0025] Further, preferably, the aeration mechanism comprises:

[0026] A pressure pump is fixed in the aeration tank, the main pipe is connected to the pressure pump, a direct current channel is vertically arranged below the pressure pump in the aeration tank, and the direct current channel is connected to the outlet of the pressure pump;

[0027] A fixed bin is arranged outside the direct current channel, a side hole is opened on the side wall of the direct current channel for connecting with the fixed bin, and a plurality of liquid holes are distributed circumferentially below the fixed bin;

[0028] A plurality of guide disc groups are arranged in an array, and the guide disc groups are transversely fixed in the aeration tank;

[0029] The biofilm is arranged relatively above each of the guide plate groups, and the guide plate groups are respectively provided with inner holes and outer holes on the inner and outer sides of the biofilm.

[0030] Further, as a preference, the guide disc group is composed of an outer disc and an inner disc which are rotatably matched, the inner disc is rotatably connected inside the outer disc, the outer disc is fixed to the inner wall of the aeration tank, and guide holes are provided on the inner disc at the positions of the inner hole and the outer hole, and when the guide holes on the inner disc are connected to the inner hole, the outer hole and the guide holes on the outer disc are staggered;

[0031] The communication states between the guide holes, the inner holes and the outer holes between adjacent guide plate groups are arranged in opposite directions.

[0032] Further, as a preference, a DC tube is vertically slidably arranged in the DC channel, a block ring is sleeved on the DC tube, a sealing ring is arranged above the side hole in the DC channel, the block ring and the sealing ring are slidably and sealingly matched, a spring is arranged on the DC tube, the spring abuts against the bottom of the DC channel, a block ball block is fixed in the DC channel, one end of the block ball block is located in the DC tube, and slidably matches with the inner wall of the micropores in the DC tube;

[0033] A middle rod is fixed in the aeration tank, a drainage seat is fixed on the upper end of the middle rod, the direct current pipe is sealingly slidably connected to the drainage seat and communicated with the drainage seat, and drainage holes are arranged on the circumference of the drainage seat.

[0034] Furthermore, preferably, the pressure pump can pump sewage to the direct current channel at high pressure, at which time the block ring slides away from the sealing ring, and the block ball block and the direct current pipe form an internal blockage, and the sewage enters the aeration tank through the liquid hole below the fixed bin.

[0035] Further, as a preference, the inner disk in the guide disk group is rotatably connected to the middle rod through a ring sleeve, and an axis block is provided in the middle rod at each of the guide disk groups. The lower part of the direct current tube is fixed to the axis block by a connecting rod, and an inclined groove is provided on the ring sleeve. A pin is fixed on the axis block, and one end of the pin passes through the middle rod and is slidably connected in the inclined groove. When the direct current tube slides vertically, the pin on the axis block drives the inner disk to perform circular deflection through the sliding action with the inclined groove.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. In the present invention, for the treatment of livestock and poultry feces and urine, a solid-liquid separation system, a static tank and a centrifugal separator can be used to preferentially filter and grade the feces and urine sewage, and then the aerobic fermentation system converts the organic matter in the sewage into carbon dioxide, water and biomass energy (such as biogas) through the aerobic metabolism of microorganisms, thereby achieving deep purification and reducing the organic load and solid content of aerobic fermentation. It has multiple advantages such as efficient separation, resource recovery, deep purification and energy utilization;

[0038] 2. In the present invention, a microporous aeration component is provided in the aerobic fermentation system, and the microporous aeration component assists in aerating the sewage, ensuring that the dissolved oxygen concentration in the sewage is maintained at an appropriate level to meet the oxygen demand of aerobic microorganisms for efficient metabolism;

[0039] 3. The aeration mechanism particularly used in the present invention can change the flow trajectory under the alternating high and low pressure of sewage, forming a positive and reverse flow impact on the biofilm, avoiding the blockage of the biofilm under long-term single flow and affecting the aeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the present invention;

[0041] Figure 2 It is a schematic diagram of the structure of the aerobic fermentation system in the present invention;

[0042] Figure 3 It is a schematic diagram of the structure of the microporous aeration component in the present invention;

[0043] Figure 4It is a structural schematic diagram of the aeration mechanism in the present invention;

[0044] Figure 5 It is a structural schematic diagram of the central axis block of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the ring sleeve in the present invention;

[0046] Figure 7 It is a schematic diagram of the flow of sewage through the aeration mechanism under low-pressure pumping in the present invention;

[0047] Figure 8 It is a schematic diagram of the flow of sewage through the aeration mechanism under high pressure pumping in the present invention;

[0048] In the figure: 1. solid-liquid separation system; 11. sewage inlet; 12. sewage pipe; 13. sewage pump 1; 14. feeding pipe; 15. composting mechanism; 2. static tank; 21. external membrane filtration system; 22. sewage pump 2; 23. centrifugal separator; 3. aerobic fermentation system; 31. fermentation tank; 32. aeration blade; 33. upper pressure plate; 34. telescopic drive unit; 4. microporous aeration assembly; 41. aeration tank; 42. sealing seat; 43. impeller; 44. Main pipe; 45. Support rod frame; 46. Fixed ring frame; 47. Microporous disk; 48. Collecting pipe; 49. Flexible pipe; 410. Discharge port; 5. Aeration mechanism; 51. Pressure pump; 52. Direct current channel; 53. Fixed bin; 54. Side hole; 55. Biofilm; 6. Guide plate group; 61. Inner hole; 62. Outer hole; 63. Guide hole; 7. Direct current pipe; 71. Drain seat; 72. Ring sleeve; 73. Shaft block; 74. Pin shaft; 75. Ball block. DETAILED DESCRIPTION

[0049] See also Figure 1-8 In an embodiment of the present invention, a livestock and poultry excrement and urine wastewater aerobic treatment system comprises:

[0050] A sewage collection tank, one side of which is connected to a sewage pipe through a pipeline, and is used for centralized collection of livestock and poultry feces and urine sewage;

[0051] A solid-liquid separation system 1 is provided with a sewage inlet 11 at one end thereof, and the sewage inlet 11 is connected to the sewage collection tank through a pumping pump. The solid-liquid separation system 1 uses a spiral blade to squeeze the fecal sewage. A sewage pipe 12 is provided on one side of the solid-liquid separation system for discharging the liquid sewage passing through the screen, and a feeding pipe 14 is provided on the other side thereof, and solid feces are pushed to the feeding pipe 14 by the spiral blade;

[0052] The composting mechanism 15 is arranged outside the solid-liquid separation system 1 and is connected to the feeding pipe 14; the composting mechanism composts the separated feces solid organic waste after solid-liquid separation, converts the organic matter into stable humus, and realizes resource utilization of the waste;

[0053] The static tank 2 is arranged on one side of the solid-liquid separation system 1. The static tank 2 is connected to the sewage pipe 12 through a sewage pump 13. The bottom channel of the static tank 2 is connected to the external membrane filtration system 21, and the upper channel of the static tank 2 is connected to the centrifugal separator 23 through a sewage pump 22. The bottom channel of the static tank serves as a centralized discharge outlet for sediments, which is convenient for collection, cleaning or further treatment.

[0054] The aerobic fermentation system 3 is connected to the clarification separation channel of the centrifugal separator 23, and the turbid liquid separation channel of the centrifugal separator 23 is connected to the external membrane filtration system;

[0055] The aerobic fermentation system 3 comprises:

[0056] The fermentation tank 31 is made of stainless steel, and a main shaft seat is rotatably arranged in the middle of the fermentation tank 31;

[0057] An upper pressing plate 33 is disposed transversely in the fermentation tank 31. The upper pressing plate 33 is sealingly and slidably connected in the fermentation tank 31. Two telescopic driving parts 34 are symmetrically distributed on the fermentation tank 31. The telescopic ends of the telescopic driving parts 34 are connected to the upper pressing plate 33.

[0058] Aeration blades 32 are circumferentially distributed on the main shaft seat. The aeration blades 32 stir the sewage in the fermentation tank 31 during the rotational motion along with the main shaft seat. The aeration blades generate a large number of tiny bubbles during the rotation process, which accelerates the transfer of oxygen from the gas phase to the liquid phase, increases the dissolved oxygen concentration in the sewage, and meets the metabolic needs of aerobic microorganisms; and

[0059] The microporous aeration components 4 are arranged and distributed on the upper pressure plate 33, and the lower ends of the microporous aeration components 4 are vertically inserted into the sewage, that is, the upper pressure plate is displaced and adjusted by the telescopic driving part according to the depth of the sewage in the fermentation tank, so that each microporous aeration component is completely in the sewage.

[0060] In this embodiment, each of the microporous aeration components 4 independently mixes a proper amount of oxygen into the sewage in the fermentation tank to increase oxygen dissolution.

[0061] As a preferred embodiment, a water quality monitoring system is provided in the fermentation tank 31, and the water quality monitoring system continuously monitors the concentration of organic matter in the sewage and obtains the proportion of organic matter in the sewage; the water quality monitoring system is externally provided with a central control system, and the central control system analyzes the oxygen demand for microbial degradation based on the obtained proportion of organic matter in the sewage, and the microporous aeration component 4 supplies oxygen according to the oxygen demand and supplies oxygen according to actual demand, on the one hand avoiding energy waste caused by excessive aeration and reducing operating costs, and on the other hand meeting the oxygen demand for microbial degradation under different water quality conditions and improving sewage treatment efficiency.

[0062] In this embodiment, the microporous aeration component 4 includes:

[0063] An aeration tank 41 is provided with a sealing seat 42 fixed on its upper part, a guide cavity is provided in the sealing seat 42, and an oxygen pipe is vertically connected to the guide cavity;

[0064] A support rod frame 45 is vertically fixed on one side of the aeration tank 41. A threaded rod is arranged outside the support rod frame 45 in parallel and relatively rotatable. A slider is slidably arranged on the support rod frame. The slider is meshed with the threaded rod for transmission through thread meshing. A driving part (not shown in the figure) is fixed on the aeration tank 41. The output end of the driving part is fixed to the threaded rod.

[0065] A fixed ring frame 46 is provided with a microporous disc 47 fixed at its inner center. A plurality of flow holes are distributed on the annular side wall of the microporous disc 47. A manifold 48 is vertically connected to the middle of the fixed ring frame 46. The manifold 48 is connected to the flow holes of the microporous disc 47. The manifold 48 is symmetrically connected to soft pipes 49. One end of the soft pipes 49 is respectively connected to the two sides of the guide cavity. That is, the microporous disc on the fixed ring frame is driven by the driving unit to move to different depths along the support rod frame. At this time, each microporous aeration component can pump and aerate sewage from different depths of the sewage, thereby effectively supplying oxygen to the sewage based on sewage stratification. The design advantages are:

[0066] 1. Microbial communities at different depths in sewage have different demands for oxygen. Stratified oxygen supply can provide appropriate oxygen concentrations for microorganisms at different depths in a targeted manner, thereby improving microbial degradation efficiency;

[0067] 2. According to the oxygen requirements of microorganisms at different depths, the aeration volume of each microporous aeration component is accurately controlled to improve oxygen utilization;

[0068] 3. Avoid energy waste caused by excessive aeration and reduce operating costs;

[0069] There are two impellers 43 arranged on the left and right, and the two impellers 43 are both rotatably connected in the guide cavity. Transmission teeth are fixed on the impellers 43, and the transmission teeth are meshed with each other. A motor is installed on the sealing seat 42, and the output end of the motor is connected with the transmission teeth through gear meshing for transmission;

[0070] A main pipe 44 is vertically connected to the middle of the lower end surface of the guide cavity, and one end of the main pipe 44 is connected to the aeration tank 41;

[0071] The aeration mechanism 5 is disposed in the aeration tank 41 , and a discharge port 410 is disposed at the bottom of the aeration tank 41 .

[0072] In this embodiment, the impeller 43 on the relatively left side rotates counterclockwise, the cross-section of the impeller 43 is a herringbone structure, and the two impellers 43 move in an interlaced manner and fit with the inner wall of the sealing seat 42, wherein the sewage can enter the guide cavity through the soft pipe, and initially merge with the oxygen under the guidance of the rotating impeller, and then enter the aeration tank through the main pipe.

[0073] In this embodiment, the aeration mechanism 5 includes:

[0074] The pressure pump 51 is fixed in the aeration tank 41. The main pipe 44 is connected to the pressure pump 51. A direct current channel 52 is vertically provided below the pressure pump 51 in the aeration tank 41. The direct current channel 52 is connected to the outlet of the pressure pump 51.

[0075] The fixed chamber 53 is arranged outside the direct current channel 52. A side hole 54 is opened on the side wall of the direct current channel 52 for connecting with the fixed chamber 53. A plurality of liquid holes are distributed circumferentially below the fixed chamber 53.

[0076] A plurality of guide plate groups 6 are arranged in an array, and the guide plate groups 6 are transversely fixed in the aeration tank 41;

[0077] The biofilm 55 is arranged relatively above each of the guide plate groups 6. The guide plate group 6 is provided with an inner hole 61 and an outer hole 62 on the inner and outer sides of the biofilm 55, respectively. After passing through the membrane pore structure of the biofilm, the sewage is fully integrated with the oxygen, thereby improving the solubility of oxygen in the sewage.

[0078] As a preferred embodiment, the guide plate group 6 is composed of an outer plate and an inner plate that are rotatably matched, the inner plate is rotatably connected inside the outer plate, the outer plate is fixed to the inner wall of the aeration tank 41, and a guide hole 63 is provided on the inner plate at the inner hole 61 and the outer hole 62. When the guide hole 63 on the inner plate is connected to the inner hole 61, the outer hole 62 and the guide hole 63 on the outer plate are staggered; that is, when the sewage flows from top to bottom, it can pass through the biofilm and flow radially outward or inward (relative to the axis of the guide plate group), so as to flow out from the outer hole or the inner hole accordingly;

[0079] The connection states of the guide holes 63 and the inner holes 61 and the outer holes 62 between the adjacent guide plate groups 6 are oppositely arranged, that is, when the sewage flows out through the outer holes in the upper guide plate group, the outer holes in the lower guide plate group are in a blocked state, and the sewage radially passes through the biofilm and flows downward through the inner holes after microporous aeration, thereby forming a flow trajectory with a serpentine cross-section in the aeration tank.

[0080] In this embodiment, a DC tube 7 is vertically slidably arranged in the DC channel 52, a blocking ring is sleeved on the DC tube 7, a sealing ring is arranged above the side hole in the DC channel 52, the blocking ring and the sealing ring are slidably and sealedly matched, a spring is arranged on the DC tube 7, the spring abuts against the bottom of the DC channel 52, a blocking ball block 75 is fixed in the DC channel 52, one end of the blocking ball block 75 is located in the DC tube 7, and is slidably matched with the inner wall of the micropores in the DC tube 7;

[0081] A middle rod is fixed in the aeration tank 41, and a drain seat 71 is fixed on the upper end of the middle rod. The direct current pipe 7 is sealingly and slidably connected to the drain seat 71 and is connected to the drain seat 71. The drain seat 71 is provided with drainage holes on the circumference. That is, on the one hand, when the blocking ring and the sealing ring are sealed and matched, the sewage can enter the drain seat through the direct current pipe and flow into the aeration tank through the drainage holes on the drain seat. On the other hand, when the blocking ball block 75 is in sealing contact with the direct current pipe, the sewage can enter the fixed bin through the side holes on the direct current channel and flow into the aeration tank from the liquid holes below the fixed bin, thereby forming two different flow paths.

[0082] In this embodiment, the pressure pump 51 can pump sewage to the direct current channel 52 at high pressure. At this time, the resistance ring slides away from the sealing ring, and the resistance ball block 75 forms an internal blockage with the direct current pipe 7. The sewage enters the aeration tank 41 through the liquid hole below the fixed bin 53. The two different flow paths formed can achieve positive and negative flow impacts on the biofilm, avoiding the blockage of the biofilm side wall particles under long-term single flow. That is, the role of the biofilm in the present invention is to assist oxygen to fully dissolve in sewage, allowing substances such as water and dissolved oxygen to promote the respiration and metabolism of microorganisms through its microporous structure. However, the existing biofilm has a one-way flow of sewage during long-term use, resulting in the gradual accumulation and formation of impurities and other pollutants on the biofilm, and the biofilm pores are partially blocked, which directly It affects the fluidity of sewage. If the biofilm is not effectively renewed or cleaned for a long time, the thickness of impurities on the biofilm surface will continue to increase, the transfer efficiency of internal oxygen and nutrients will decrease, and anaerobic conditions may occur in the central area. The aeration mechanism used in the present invention can provide two flow paths with different flow directions for the sewage, thereby reducing the possibility of pollutants in the sewage adhering to the biofilm during the back-and-forth switching process (that is, when the sewage switches the flow direction, the impurities attached to one side of the biofilm surface can be removed from the biofilm surface by the reverse flow of sewage and carried away with the sewage, which helps to reduce the blockage of the membrane surface and restore the permeability of the membrane pores), extending the service life, and finally the impurities and pollutants can be discharged outward through the guide holes on each guide plate group and the inner and outer holes.

[0083] In this embodiment, the inner disk in the guide disk group 6 is rotatably connected to the middle rod through a ring sleeve 72, and a shaft block 73 is provided in the middle rod at each of the guide disk groups 6. The lower part of the direct current tube 7 is fixed to the shaft block 73 through a connecting rod, and an inclined groove is provided on the ring sleeve 72. A pin 74 is fixed on the shaft block 73, and one end of the pin 74 passes through the middle rod and is slidably connected in the inclined groove. When the direct current tube 7 slides vertically, the pin 74 on the shaft block 73 drives the inner disk to perform circular deflection through the sliding action with the inclined groove, that is, when the pressure pump switches between high and low pressure, the two different flow paths formed at this time can be switched accordingly, and the guide hole in the guide disk group can be switched and connected between the inner hole and the outer hole synchronously to achieve self-control regulation.

[0084] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aerobic treatment system for livestock and poultry excrement and sewage, characterized by: It includes: A sewage collection tank, one side of which is connected to a sewage pipe through a pipeline, and is used for centralized collection of livestock and poultry feces and urine sewage; A solid-liquid separation system (1) is provided with a sewage inlet (11) at one end thereof, and the sewage inlet (11) is connected to a sewage collection tank via a pumping pump. The solid-liquid separation system (1) uses a spiral blade to squeeze the fecal sewage. A sewage pipe (12) is provided on one side of the solid-liquid separation system for discharging liquid sewage passing through the screen, and a feeding pipe (14) is provided on the other side thereof, and solid feces are pushed to the feeding pipe (14) by the spiral blade. A composting mechanism (15) is arranged outside the solid-liquid separation system (1) and is connected to the feeding pipe (14); A static pool (2) is arranged on one side of the solid-liquid separation system (1); the outside of the static pool (2) is connected to a sewage pipe (12) via a sewage pump (13); a bottom channel of the static pool (2) is connected to an external membrane filtration system (21); and an upper channel of the static pool (2) is connected to a centrifugal separator (23) via a sewage pump (22); The aerobic fermentation system (3) is connected to the clarification separation channel of the centrifugal separator (23), and the turbid liquid separation channel of the centrifugal separator (23) is connected to the external membrane filtration system; The aerobic fermentation system (3) includes: The fermentation tank (31) is made of stainless steel, and a main shaft seat is rotatably arranged in the middle of the fermentation tank (31); An upper pressing plate (33) is transversely arranged in the fermentation tank (31). The upper pressing plate (33) is sealingly and slidably connected in the fermentation tank (31). Two telescopic driving parts (34) are symmetrically distributed on the fermentation tank (31). The telescopic ends of the telescopic driving parts (34) are connected to the upper pressing plate (33). Aeration blades (32) are circumferentially distributed on the main shaft seat, and the aeration blades (32) stir the sewage in the fermentation tank (31) during the rotational motion along with the main shaft seat; and The microporous aeration components (4) are arranged and distributed on the upper pressure plate (33), and the lower ends of the microporous aeration components (4) vertically penetrate into the sewage; The microporous aeration assembly (4) comprises: An aeration tank (41) is fixed with a sealing seat (42) on its upper side, a guide cavity is provided in the sealing seat (42), and an oxygen pipe is vertically connected to the guide cavity; An aeration mechanism (5) is arranged in an aeration tank (41), and a discharge port (410) is arranged below the aeration tank (41); The aeration mechanism (5) comprises: A pressure pump (51) is fixed in the aeration tank (41), the main pipe (44) is connected to the pressure pump (51), a direct current channel (52) is vertically arranged below the pressure pump (51) in the aeration tank (41), and the direct current channel (52) is connected to the outlet of the pressure pump (51); The fixed chamber (53) is arranged outside the direct current channel (52), and a side hole (54) is opened on the side wall of the direct current channel (52) for connecting with the fixed chamber (53). A plurality of liquid holes are distributed circumferentially below the fixed chamber (53); A plurality of guide plate groups (6) are arranged in an array, and the guide plate groups (6) are transversely fixed in the aeration tank (41); The biofilm (55) is arranged relatively above each guide plate group (6), and the guide plate group (6) is provided with an inner hole (61) and an outer hole (62) located inside and outside the biofilm (55) respectively; The guide plate group (6) is composed of an outer plate and an inner plate which are rotatably matched. The inner plate is rotatably connected to the outer plate. The outer plate is fixed to the inner wall of the aeration tank (41). The inner plate is provided with guide holes (63) at the positions of the inner hole (61) and the outer hole (62). When the guide holes (63) on the inner plate are connected to the inner hole (61), the outer hole (62) and the guide holes (63) on the outer plate are staggered. The communication states of the guide holes (63) and the inner holes (61) and the outer holes (62) between adjacent guide plate groups (6) are arranged in opposite directions; A direct current tube (7) is vertically slidably arranged in the direct current channel (52), a resistance ring is sleeved on the direct current tube (7), a sealing ring is arranged above the side hole in the direct current channel (52), the resistance ring and the sealing ring are slidably and sealingly matched, a spring is arranged on the direct current tube (7), the spring abuts against the bottom of the direct current channel (52), a ball resistance block (75) is fixed in the direct current channel (52), one end of the ball resistance block (75) is located in the direct current tube (7) and is slidably matched with the inner wall of the micropore in the direct current tube (7); A middle rod is fixed in the aeration tank (41), a drainage seat (71) is fixed on the upper end of the middle rod, the direct current pipe (7) is sealingly slidably connected to the drainage seat (71) and is connected to the drainage seat (71), and drainage holes are provided on the circumference of the drainage seat (71); The pressure pump (51) can pump sewage to the direct current channel (52) at high pressure. At this time, the blocking ring and the sealing ring slide and separate, and the blocking ball block (75) and the direct current pipe (7) form an internal blockage, and the sewage enters the aeration tank (41) through the liquid hole below the fixed bin (53).

2. The aerobic treatment system for livestock and poultry excrement and sewage according to claim 1, characterized in that: Each of the microporous aeration components (4) independently mixes an appropriate amount of oxygen into the sewage in the fermentation tank to increase oxygen dissolution.

3. The aerobic treatment system for livestock and poultry excrement and sewage according to claim 1, characterized in that: The fermentation tank (31) is provided with a water quality monitoring system, which continuously monitors the concentration of organic matter in the sewage and obtains the proportion of organic matter in the sewage. The water quality monitoring system is provided with a central control system outside the water quality monitoring system, which analyzes the oxygen demand for microbial degradation based on the obtained proportion of organic matter in the sewage, and the microporous aeration component (4) supplies oxygen according to the oxygen demand.

4. The aerobic treatment system for livestock and poultry excrement and wastewater according to claim 1, characterized in that: The microporous aeration component (4) further comprises: A support rod frame (45) is vertically fixed on one side of the aeration tank (41), a threaded rod is arranged outside the support rod frame (45) in parallel and relatively rotatable, a slider is slidably arranged on the support rod frame, the slider is meshed with the threaded rod through thread meshing, a driving unit is fixed on the aeration tank (41), and an output end of the driving unit is fixed to the threaded rod; A fixed ring frame (46) is provided with a microporous disk (47) fixed at its inner center, a plurality of flow holes are distributed on the annular side wall of the microporous disk (47), a collecting pipe (48) is vertically connected to the middle of the fixed ring frame (46), the collecting pipe (48) is connected to the flow holes of the microporous disk (47), the collecting pipe (48) is symmetrically connected to a soft pipe (49) on the left and right, and one end of the soft pipe (49) is respectively connected to two sides of the guide cavity; There are two impellers (43) arranged on the left and right, and the two impellers (43) are both rotatably connected in the guide cavity. Transmission teeth are fixed on the impellers (43), and the transmission teeth are meshed with each other. A motor is installed on the sealing seat (42), and the output end of the motor is connected to the transmission teeth through gear meshing for transmission; The main pipe (44) is vertically connected to the middle part of the lower end surface of the guide cavity, and one end of the main pipe (44) is connected to the aeration tank (41).

5. The aerobic treatment system for livestock and poultry excrement and wastewater according to claim 4, characterized in that: The impeller (43) on the relatively left side rotates counterclockwise, the cross section of the impeller (43) is a herringbone structure, and the two impellers (43) move in an interlaced manner and fit with the inner wall of the sealing seat (42).

6. The aerobic treatment system for livestock and poultry excrement and wastewater according to claim 1, characterized in that: The inner disk in the guide disk group (6) is rotatably connected to the middle rod through a ring sleeve (72), and a shaft block (73) is arranged in the middle rod at each of the guide disk groups (6). The lower part of the direct current tube (7) is fixed to the shaft block (73) through a connecting rod, and an inclined groove is provided on the ring sleeve (72). A pin shaft (74) is fixed on the shaft block (73), and one end of the pin shaft (74) passes through the middle rod and is slidably connected in the inclined groove. When the direct current tube (7) slides vertically, the pin shaft (74) on the shaft block (73) drives the inner disk to perform circumferential deflection through the sliding action with the inclined groove.

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