Livestock and poultry manure treatment system and method

Abstract

The present invention belongs to the technical field of livestock and poultry manure treatment, and specifically relates to a livestock and poultry manure treatment system and method, including an aerobic fermenter, a solid-liquid separation device, and a manure drying device. The solid-liquid separation device includes a solid-liquid separation tank and a transmission component. The solid-liquid separation tank is used to hold manure. The transmission component is arranged in the solid-liquid separation tank, and is used to transmit manure while achieving solid-liquid separation of manure during the transmission process. The manure drying device has a material receiving port and a material discharge port. The material receiving port is arranged at the lower side of the output end of the transmission component, and is used to receive solid manure transmitted by the transmission component. The discharge port is connected to the feed port of the aerobic fermenter. The manure drying device is used to dry and dehydrate the solid manure to obtain dried and dehydrated manure. In this way, the manure can be fully dehydrated and dried before entering the aerobic fermenter, reducing the consumption of straw during aerobic fermentation and improving the fertilizer efficiency of organic fertilizer.

Description

Technical Field

[0001] The present invention belongs to the technical field of livestock and poultry manure treatment, and in particular relates to a livestock and poultry manure treatment system and method. Background Art

[0002] With the annual expansion of livestock and poultry farming, the amount of livestock manure discharged has increased dramatically. The large amounts of hydrogen sulfide, alcohols, phenols, and aminobenzenes produced by livestock excrement and its decomposition, as well as numerous pathogens, pollute the surrounding environment, primarily causing water pollution, eutrophication, and the spread of disease. Failure to properly discharge and treat this livestock manure can pollute water, soil, and the atmosphere. Furthermore, the sole use of chemical fertilizers for crop cultivation can reduce soil organic matter and, in severe cases, even threaten human safety through environmental pollution. Therefore, while developing the livestock and poultry industry, it is crucial to properly dispose of livestock manure and waste.

[0003] Based on this, Chinese patent CN201710045477.5 discloses a method for bio-fertilizing livestock and poultry manure. The manure is transported to a manure storage tank through a pipeline, broken into a thin paste by a wind jet agitator, and pretreated in a biochemical hydrolysis tank. A mobile manure sprayer is used to evenly spread the manure on the crushed straw. The manure and straw are aerobically fermented by microorganisms through a turning machine to achieve the production of organic fertilizer.

[0004] The method for bio-fertilizing livestock and poultry manure provided by the above patent is to directly spray the manure pre-treated in a biochemical hydrolysis tank onto crushed straw for aerobic fermentation. Since the manure itself is in a solid-liquid coexistence state, the liquid content in the manure is further increased after the above treatment method. The greater the liquid content in the manure, the more straw is required during the aerobic fermentation process. The greater the amount of straw added, the less manure content in the organic fertilizer will be, resulting in a decrease in the fertilizer efficiency of the produced organic fertilizer and poor use effect. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a livestock and poultry manure treatment system and method, which can fully dehydrate and dry the manure before it enters the aerobic fermentation device, reduce the consumption of straw during aerobic fermentation, and effectively improve the fertilizer efficiency of organic fertilizer.

[0006] The technical solution of the present invention is:

[0007] A livestock and poultry manure treatment system and method, comprising an aerobic fermenter having a feed inlet, and further comprising:

[0008] The solid-liquid separation device includes a solid-liquid separation tank and a transmission component. The solid-liquid separation tank is used to hold feces and sewage. The input end of the transmission component is arranged in the solid-liquid separation tank. The transmission component is used to transmit feces and sewage while achieving solid-liquid separation of the feces and sewage during the transmission process.

[0009] The manure drying equipment has a material receiving port and a material discharge port. The material receiving port is arranged on the lower side of the output end of the transmission component, and is used to receive the solid manure transmitted by the transmission component. The material discharge port of the manure drying equipment is connected to the material feed port of the aerobic fermenter. The manure drying equipment is used to dry and dehydrate the solid manure to obtain dried and dehydrated manure, and the aerobic fermenter is used to biologically treat the dried and dehydrated manure.

[0010] Preferably, the transmission component includes a first conveyor belt arranged at an angle, the lower end of the first conveyor belt in the inclined direction is fixed to one side of the solid-liquid separation tank through a lower support shaft, the upper end of the first conveyor belt in the inclined direction is fixed to the top of the other side of the solid-liquid separation tank through an upper support shaft, and the upper end of the first conveyor belt in the inclined direction extends out of the solid-liquid separation tank and is placed on the upper side of the material receiving port of the manure drying equipment, a plurality of filter troughs are evenly distributed on the belt surface of the first conveyor belt, the filter troughs are fixed to the belt surface of the first conveyor belt, and the notches of the filter troughs face the side of the running direction of the first conveyor belt, and the side walls where the filter troughs are connected to the first conveyor belt are provided with filter nets.

[0011] Preferably, the manure drying equipment includes a box body, a first leg is fixedly installed on the bottom of the box body, a receiving hopper is fixedly connected to the upper side of the box body, and a discharge hopper is fixedly connected to the lower side of the box body, and the slot of the receiving hopper is placed on the lower side of the end of the first conveyor belt extending out of the solid-liquid separation tank, and multiple second conveyor belts are horizontally arranged inside the box body, and the multiple second conveyor belts are distributed in an S shape from top to bottom, and a heating plate is installed on the inner side of the belt surface of each second conveyor belt, and a manure disperser is also provided at the connecting end of the receiving hopper and the box body, and the manure disperser is used to evenly disperse the manure falling from the feed hopper on the second conveyor belt, and an air inlet is provided on the lower side of the box body, and an air outlet is provided on the upper side.

[0012] Preferably, the aerobic fermenter includes a fermentation bin, a discharge hopper is provided at the bottom of the fermentation bin, and a bin door is provided between the discharge hopper and the fermentation bin, and the communication and separation between the discharge hopper and the fermentation bin cavity are achieved by opening and closing the bin door, a feed port is provided at the upper end of the side wall of the fermentation bin, and the collecting hopper of the manure drying equipment and the feed port of the aerobic fermenter are connected by a belt conveyor, the top wall of the fermentation bin is connected to a first motor through a fixing part, the output shaft of the first motor penetrates into the fermentation bin and is fixed with a truss bridge, a plurality of second motors are fixedly connected to the lower side of the truss bridge, and a vertically arranged stirring shaft is fixed to the output shaft of each second motor, and an odor outlet is also provided on the side wall of the fermentation bin, and the odor outlet is connected to the air inlet on the manure drying equipment through a gas pipeline.

[0013] Preferably, the belt conveyor is provided with a drop port near one side of the fermentation bin, and a straw conveyor is provided on one side of the drop port, and the discharge end of the straw conveyor is connected to the drop port, and the manure from the collecting hopper of the manure drying equipment and the straw from the straw conveyor are transported to the feed port of the aerobic fermenter under the action of the belt conveyor.

[0014] Preferably, a fan is further provided on the outside of the fermentation bin, the air outlet end of the fan is connected to an air supply main pipe, the air supply main pipe is fixed on the top wall of the fermentation bin, the end of the air supply main pipe away from the fan penetrates into the fermentation bin and is rotatably connected to a air supply branch pipe, the air supply branch pipe is fixed on the truss bridge, and a mixing blade with a cavity is spirally arranged along the axial direction on each of the mixing shafts, each of the mixing blades is connected to the air supply branch pipe, and a plurality of air supply holes are provided on the mixing blade.

[0015] Preferably, a livestock and poultry breeding shed is provided on one side of the solid-liquid separation tank, the ground of the livestock and poultry breeding shed is provided with a slope, a manure collecting trough is provided on the lower side of the slope, a grille is installed on the lowest side of the manure collecting trough, a manure conveying pipe is connected to the discharge port of the manure collecting trough located on the lower side of the grille, the manure conveying pipe is erected on the slot of the solid-liquid separation tank, and one end of the manure conveying pipe away from the manure collecting trough extends to the inside of the solid-liquid separation tank, and a photovoltaic power generation system is also installed on the roof of the livestock and poultry breeding shed.

[0016] Preferably, a water outlet is provided on the side wall of the solid-liquid separation tank, and the water outlet is connected to a sewage treatment device. The sewage treatment device includes a sewage tank, and a sewage inlet and a sewage outlet are provided on the side wall of the sewage tank. The sewage inlet is connected to the water outlet on the solid-liquid separation tank through a pipe. A sludge outlet is also provided on the lower side of the sewage tank, and the sludge outlet is connected to the material receiving port of the manure drying equipment through a first conveying device. The lower side of the solid-liquid separation tank is funnel-shaped, and a mud discharge port is provided at the bottom of the solid-liquid separation tank, and the mud discharge port is connected to the material receiving port of the manure drying equipment through a second conveying device.

[0017] Preferably, a greenhouse is further provided on one side of the aerobic fermenter, and a soil layer and a gravel layer are laid in sequence on the bottom of the greenhouse from top to bottom, economic crops are planted in the soil layer, and a plurality of odor main pipes are inserted in parallel in the gravel layer, and a plurality of odor branch pipes are evenly arranged on the side of each odor main pipe facing the soil layer, and one end of the odor branch pipe is away from the odor main pipe and contacts the soil layer, and one end of the odor main pipe passes through the greenhouse and is connected to the air outlet on the manure drying equipment through a gas pipeline.

[0018] A method for using a livestock and poultry manure treatment system comprises the following steps:

[0019] (a) The slope of the livestock and poultry breeding shed floor allows the excrement of livestock and poultry to be collected into the manure trough, filtered through the grate to remove large particles of impurities in the manure, and then transported to the solid-liquid separation tank through the manure conveying pipe;

[0020] (b) After entering the solid-liquid separation tank, the manure from the manure conveying pipe flows by gravity to the filter tank. The filter screen installed at the bottom of the filter tank separates the manure from the solid and liquid. The separated liquid flows into the lower side of the solid-liquid separation tank. The separated solid enters the receiving hopper of the manure drying equipment along the first conveyor belt. At the same time, the sludge settled at the bottom of the solid-liquid separation tank is discharged through the sludge discharge port and transported to the receiving port of the manure drying equipment via the second conveying equipment;

[0021] (c) The manure and sewage entering the receiving hopper are dispersed into the manure and sewage sludge by the manure and sewage disperser provided below the receiving hopper of the manure and sewage drying equipment. The dispersed manure and sewage are evenly scattered on the second conveyor belt for transmission. The manure and sewage are heated by the electric heating plate inside the second conveyor belt and purged and heat-exchanged by the odor entering from the odor inlet, thereby removing moisture from the manure and sewage and drying the manure and sewage. In addition, the arrangement of multiple second conveyor belts prolongs the residence time of the manure and sewage in the manure and sewage drying equipment, thereby making the manure and sewage dry more fully. The dried manure and sewage fall into the collecting hopper for discharge, while the odor generated during the drying process is discharged from the gas outlet.

[0022] (d) transporting manure from the manure drying equipment hopper and straw from the straw conveyor to the feed port of the fermentation bin via a belt conveyor and into the fermentation bin, detecting and maintaining the solid content of the material entering the aerobic fermenter at 40%-45%, the carbon-nitrogen ratio at 25:1-35:1, the fermentation cycle at 7-10 days, the fermentation temperature at 65-80°C, and the maximum fermentation temperature at 100°C;

[0023] (e) stirring the material entering the fermentation bin, wherein the stirring shaft is driven by the second motor to rotate on its own axis and driven by the first motor to revolve around it. While stirring, the fan is started to supply external air to the stirring blades on the stirring shaft through the gas main pipe and the gas branch pipe. The stirring blades supply oxygen to the material through the air supply holes on the side walls thereof, so that the stirring shaft has an aeration function. Through the rotation and revolution of the stirring shaft, the manure, straw and oxygen entering the fermentation bin are fully mixed, and the mixed material is quickly decomposed. The decomposed material enters the discharge hopper through the bin door, and the odor generated during the aerobic fermentation process is discharged from the odor outlet and transported to the manure drying equipment through the gas pipeline;

[0024] (f) The odor from the outlet of the manure drying equipment is introduced into the odor main pipe through the gas pipeline, and then into the gravel layer of the greenhouse through the odor branch pipe on the odor main pipe, so that the odor can freely diffuse through the gaps in the gravel layer to the soil layer and be absorbed by the soil;

[0025] (g) The sewage from the outlet of the solid-liquid separation tank enters the sewage treatment equipment through the sewage inlet. After the sewage is treated and meets the standards, part of it is reused in the livestock and poultry breeding shed, and part of it is sent to the greenhouse for irrigation of economic crops. The sludge generated during the sewage treatment process is transported to the receiving hopper of the manure drying equipment through the first conveying equipment for drying treatment together with the manure.

[0026] Compared with the prior art, the livestock and poultry manure treatment system and method of the present invention has the following beneficial effects:

[0027] The system uses solid-liquid separation tanks, transmission components, manure drying equipment, aerobic fermenters and other equipment to cooperate with each other. It can not only effectively separate the solid and liquid of manure, but also dehydrate and dry the separated solid manure, so that the manure entering the aerobic fermenter can effectively reduce the liquid content, thereby reducing the consumption of straw, and realizing efficient and harmless treatment of livestock and poultry manure, ensuring that the produced organic fertilizer has good fertilizer efficiency. At the same time, it also solves the current problems of substandard livestock and poultry manure treatment and pollution of the surrounding environment in the breeding industry. This system has the characteristics of green, low carbon, comprehensive resource utilization, and diversified functions. It has good treatment effects and broad application prospects for livestock and poultry manure treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic diagram of the structure of the overall system in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the internal structure of the solid-liquid separation tank in an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a manure drying device according to an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the structure of an aerobic fermenter in an embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the internal structure of a greenhouse in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Livestock and poultry breeding shed; 101. Photovoltaic power generation system; 102. Manure collection trough; 103. Grille; 104. Manure conveying pipe; 2. Solid-liquid separation tank; 201. Water outlet; 202. Lower support shaft; 203. Mud discharge port; 204. Upper support shaft; 205. First conveyor belt; 206. Filter tank; 207. Filter screen; 3. Manure drying equipment; 301. Feed hopper; 302. Manure disperser; 303. Second conveyor belt; 304. Heating plate; 305. First support leg; 306. Collection hopper; 307. Air inlet; 308. Air outlet; 4. Belt conveyor; 5. Aerobic fermentation 6. Greenhouse; 601. Odor main pipe; 602. Odor branch pipe; 603. Gravel layer; 604. Soil layer; 605. Cash crops; 7. Sewage treatment equipment; 701. Sewage inlet; 702. Sewage outlet; 703. Sludge outlet; 8. Straw conveyor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] See also Figures 1 to 5 As shown, in order to achieve solid-liquid separation of manure and sewage, reduce the amount of liquid participating in the fermentation stage, and thus effectively reduce the amount of straw consumption required in the aerobic fermentation process, this embodiment provides a livestock and poultry manure treatment system and method, including an aerobic fermenter 5, a solid-liquid separation device and a manure drying device, wherein the solid-liquid separation device consists of a solid-liquid separation tank 2 and a transmission component, the solid-liquid separation tank 2 is arranged on one side of the livestock and poultry breeding shed 1 for holding solid-liquid mixed manure and sewage from the livestock and poultry breeding shed 1, and the input end of the transmission component is arranged on the solid-liquid separation tank. In the pool 2, the transmission component is used to transmit manure and sewage while realizing solid-liquid separation of manure and sewage during the transmission process; the manure drying equipment 3 has a receiving port and a discharge port, and the receiving port is arranged at the lower side of the output end of the transmission component, and is used to receive the solid manure and sewage transmitted by the transmission component. The discharge port of the manure drying equipment 3 is connected with the feed port of the aerobic fermentation device 5. The manure drying equipment 3 is used to dry and dehydrate the solid manure and sewage to obtain dried and dehydrated manure and sewage, and finally the dried and dehydrated manure and sewage are used for biological treatment through the aerobic fermentation device 5 to form organic fertilizer.

[0039] See also Figure 1 As shown, the ground of the livestock and poultry breeding shed 1 has a certain slope. A manure collecting trough 102 is arranged on the lower side of the ground slope of the livestock and poultry breeding shed 1. A grille 103 is installed at the lowest end of the manure collecting trough 102. Preferably, the spacing between the bars of the grille 103 is 5mm-10mm. A manure conveying pipe 104 is connected to the discharge port of the manure collecting trough 102 on the lower side of the grille 103. The manure conveying pipe 104 is mounted on the notch of the solid-liquid separation tank 2, and the end of the manure conveying pipe 104 away from the manure collecting trough 102 extends into the solid-liquid separation tank 2. A photovoltaic power generation system 101 is also installed on the roof of the livestock and poultry breeding shed 1. Manure is collected by the manure collecting trough 102, filtered by the grille 103 to remove large impurities in the manure, and then transported to the solid-liquid separation tank 2 through the manure conveying pipe 104.

[0040] See also Figure 2As shown, the lower side of the solid-liquid separation tank 2 is funnel-shaped and the upper side is straight-cylindrical. The transmission component is arranged in the straight-cylindrical part on the upper side of the solid-liquid separation tank 2, and the transmission component includes a first transmission belt 205 arranged obliquely. The lower end of the first transmission belt 205 in the oblique direction is fixed to the inner side wall of the solid-liquid separation tank 2 close to the livestock and poultry breeding shed 1 through the lower support shaft 202, and the upper end of the first transmission belt 205 in the oblique direction is fixed to the top of the side of the solid-liquid separation tank 2 away from the livestock and poultry breeding shed 1 through the upper support shaft 204, and the first transmission belt 205 is fixed to the top of the side of the solid-liquid separation tank 2 away from the livestock and poultry breeding shed 1 through the upper support shaft 204. A solid-liquid separation tank 2 is extended from the upper end of a conveyor belt 205 in an inclined direction and is placed on the upper side of the material receiving port of the manure drying equipment 3. A plurality of filter grooves 206 are evenly distributed on the belt surface of the first conveyor belt 205. The filter grooves 206 are fixed to the belt surface of the first conveyor belt 205, and the grooves of the filter grooves 206 face the side of the running direction of the first conveyor belt 205. A filter screen 207 is provided on the side wall where the filter grooves 206 are connected to the first conveyor belt 205. The pore size of the filter screen 207 is 0.05-0.2 mm. In addition, a water outlet 201 is provided on the side wall of the solid-liquid separation tank 2. The water outlet 201 is connected to the sewage treatment equipment 7. The sewage treatment equipment 7 includes a sewage tank. The side wall of the sewage tank is provided with a sewage inlet 701 and a sewage outlet 702. The sewage inlet 701 is connected to the water outlet 201 on the solid-liquid separation tank 2 through a pipe. The lower side of the sewage tank is also provided with a sludge outlet 703. The sludge outlet 703 is connected to the material receiving port of the manure drying equipment 3 through a first conveying device. A sludge discharge port 203 is also provided at the bottom of the solid-liquid separation tank 2. The sludge discharge port 203 is also connected to the material receiving port of the manure drying equipment 3 through a second conveying device.

[0041] The feces mixed with urine and flushing water are transported by the feces conveying pipe 104 to the top of the solid-liquid separation tank 2 and flow to the filter tank 206. The filter screen 207 arranged at the bottom of the filter tank 206 intercepts the solids in the feces and is gradually lifted to the highest point along the first conveyor belt 205. It is then discharged to the receiving hopper 301 of the feces drying equipment 3. After discharge, the bottom of the filter tank 206 faces upward and moves downward along the first conveyor belt 205. When it comes into contact with the separated liquid, the filter screen 207 is automatically cleaned, facilitating the next filtration step. Therefore, by laying out multiple filter tanks 206 on the first conveyor belt 205, it is possible to improve the multi-stage filtration of feces and quickly achieve solid-liquid separation of feces and sewage. After further sedimentation in the solid-liquid separation tank 2, the supernatant is transported to the sewage treatment equipment 7 through the outlet 201 provided on the side wall of the solid-liquid separation tank 2 for treatment. The sediment is discharged through the mud outlet 203 provided at the bottom of the solid-liquid separation tank 2 and transported to the hopper 301 of the manure drying equipment 3 for further treatment. The sewage treatment equipment 7 uses a combination of anaerobic, aerobic, and membrane treatment processes. The treated effluent meets the standards for flushing water in livestock and poultry breeding sheds and subsequent irrigation reuse.

[0042] See also Figure 3As shown, the manure drying equipment 3 includes a box body, a first support leg 305 is fixedly installed on the bottom of the box body, a receiving hopper 301 is fixedly connected to the upper side of the box body, and a collecting hopper 306 is fixedly connected to the lower side of the box body, and the slot of the receiving hopper 301 is placed on the lower side of the end of the first conveyor belt 205 extending out of the solid-liquid separation tank 2, and a plurality of second conveyor belts 303 are horizontally arranged inside the box body. The plurality of second conveyor belts 303 are distributed in an S shape from top to bottom, and a heating plate 304 is installed on the inner side of the belt surface of each second conveyor belt 303. A manure disperser 302 is also provided at the connecting end of the receiving hopper 301 and the box body. The manure disperser 302 is used to evenly disperse the manure falling from the feed hopper on the second conveyor belt 303. An air inlet 307 is provided on the lower side of the box body, and an air outlet 308 is provided on the upper side. The heating plate 304 is heated at a temperature of 60-80°C. During the manure treatment process, the thickness of the sludge adhering to the second conveyor belt 303 is between 0.3-0.5mm, resulting in a solid content of 25%-35% after drying. The manure disperser 302 uses a double roller extrusion method to disperse the manure into a strip structure.

[0043] During use, the manure and sludge entering the receiving hopper 301 are transported from the receiving hopper 301 to the collecting hopper 306 through multiple second conveyor belts 303 arranged alternately in an S shape within the manure drying device 3. After solid-liquid separation, the manure enters the drying device from the receiving hopper 301. First, the manure is dispersed by a disperser arranged below the receiving hopper 301 to prevent the manure from agglomerating or piling up, which affects the drying effect. Secondly, the dispersed material is evenly arranged on the second conveyor belt 303 for transmission, and the manure is heated by the electric heating plate 304 inside the second conveyor belt 303. Furthermore, the photovoltaic power generation system 101 utilizes solar energy and high-temperature aerobic fermentation odor at the rear end as heat sources, which is passed into the manure drying device 3 from the air inlet 307 to generate a purge heat exchange effect, remove moisture, and dry the manure, thereby achieving rapid drying of the waste and meeting the conditions required for subsequent aerobic fermentation. The power supply for the electric heating plate 304 also comes from the photovoltaic power generation system 101.

[0044] See also Figure 4As shown, the aerobic fermenter 5 includes a fermentation bin, and the lower side of the fermentation bin is also fixed to the ground support by a second support leg 506. The fermentation bin adopts a high-temperature vertical fermentation bin, which is stably placed on the ground by a plurality of second support legs 506. A discharge hopper 507 is provided at the bottom of the fermentation bin, and a bin door 508 is provided between the discharge hopper 507 and the fermentation bin. The discharge hopper 507 and the fermentation bin cavity are connected and separated by the opening and closing of the bin door 508. The bin door 508 is closed to support the fermented material. The discharge hopper 507 is located below the bin door 508 and is funnel-shaped. After the fermentation is completed, the bin door 508 is slowly opened to discharge the material from the discharge hopper 507. A feed port 513 is provided at the upper end of the side wall of the fermentation bin, and the collecting hopper 306 of the manure drying equipment 3 is connected to the feed port 513 of the aerobic fermenter 5 by a belt conveyor 4. As shown Figure 1 As shown, specifically, the belt conveyor 4 has an inclined portion, and horizontal portions are respectively provided at both ends of the inclined portion, and the horizontal portion close to the side of the manure drying equipment 3 is placed below the outlet of the collecting hopper 306, which is convenient for collecting the dried manure, and the other horizontal portion of the belt conveyor 4 is directly connected to the feed port 513 of the fermentation bin. In addition, the belt conveyor 4 is provided with a drop port on the upper side of the horizontal portion close to the side of the fermentation bin, and a straw conveyor 8 is provided on one side of the belt conveyor 4, and the discharge port of the straw conveyor 8 is connected to the drop port, which is convenient for mixing straw and manure before entering the fermentation bin. The manure from the collecting hopper 306 of the manure drying equipment 3 and the straw from the straw conveyor 8 are transported to the feed port 513 of the aerobic fermenter 5 under the action of the belt conveyor 4 and enter the interior of the fermentation bin.

[0045] like Figure 1 and Figure 4As shown, the aerobic fermenter 5 also includes a first motor 501, a truss bridge 502, a gas branch pipe 503, a stirring shaft 504, an air supply hole 505, an odor outlet 509, a gas main pipe 510, a fan 511, a second motor 512, and a feed port 513; wherein the odor outlet 509 is arranged on the side wall of the aerobic fermenter 5, and the odor outlet 509 is connected to the air inlet 307 on the manure drying equipment 3 through the gas pipeline. The first motor 501 is located at the top center of the aerobic fermenter 5 and is fixed to the feed port 513. The output shaft of the first motor 501 passes through the fermentation bin and is fixed to the truss bridge 502, and the truss bridge 502 is arranged along the radial direction of the fermentation bin. The first motor 501 is used to drive the truss bridge 502 to rotate along the circumferential direction in the fermentation bin. A plurality of second motors 512 are evenly fixedly connected below the truss bridge 502, and the output shafts of the second motors 512 are all vertically arranged, and a vertically arranged stirring shaft 504 is fixedly installed on the output shaft of each second motor 512. Furthermore, a fan 511 is installed outside the fermentation bin, and the air outlet end of the fan 511 is connected to the gas supply pipe 510, and the gas supply pipe 510 is fixed to the top wall of the fermentation bin, and the end of the gas supply pipe 510 away from the fan 511 penetrates into the fermentation bin and is rotatably connected to the gas supply branch pipe 503, and the gas supply branch pipe 503 is fixed to it along the length direction of the truss bridge 502; in addition, a stirring blade is spirally arranged along the axial direction on each stirring shaft 504, and the stirring blade is a cavity setting, and a plurality of air supply holes 505 are opened on the side wall of the stirring blade, and the upper end of each stirring blade rotates with the gas supply branch pipe 503, and the cavity of the stirring blade is connected to the cavity of the gas supply branch pipe 503.

[0046] The dried manure collected in the collecting hopper 306 enters the fermentation chamber through the feed port 513 of the fermentation chamber via the belt conveyor 4. While the belt conveyor 4 is transporting the manure, the automatic control system can accurately control the supply of crushed straw and manure to ensure that the main parameters of the material entering the fermentation system, such as the carbon-nitrogen ratio and moisture content, meet the fermentation requirements. The manure entering the fermentation chamber is fixed to the truss bridge 502 through the multi-axis stirring shaft 504 with an aeration function. The shaft rotates with the bridge and achieves full mixing and oxygen supply of the material through rotation and revolution. The feed port 513 of the aerobic fermenter 5 is set on the side. After the material enters the fermentation chamber, it is rapidly mixed and heated under the stirring of the multi-axis stirrer. After the material is fermented and matured at high temperature, it enters the discharge hopper 507 through the chamber door 508. The air required for the fermentation process is provided by the fan 511. The air is diffused to the material through the fixed air supply main 510 and the air supply branch 503 stirring shaft 504 that rotates with the truss bridge 502. The heat-containing odor generated during the aerobic fermentation process is discharged from the odor outlet 509 and transported from the air inlet 307 of the manure drying equipment 3 through the gas pipeline to the inside of the manure drying equipment 3, thereby realizing the above-mentioned purging and heat exchange function, and assisting in drying and dehydrating the manure in the manure drying equipment 3.

[0047] See also Figure 1 and Figure 5 As shown, a greenhouse 6 is also provided on one side of the aerobic fermenter 5. The bottom of the greenhouse 6 is laid with a soil layer 604 and a gravel layer 603 from top to bottom. Economic crops 605 are planted in the soil layer 604. A plurality of odor main pipes 601 are inserted in parallel in the gravel layer 603. A plurality of odor branch pipes 602 are evenly arranged on the side of each odor main pipe 601 facing the soil layer 604. One end of the odor branch pipe 602 is away from the odor main pipe 601 and is in contact with the soil layer 604. One end of the odor main pipe 601 passes through the greenhouse 6 and is connected to the air outlet 308 on the manure drying equipment 3 through a gas pipeline.

[0048] Odor entering the gravel layer 603 is dispersed through the main odor pipe 601 and branch odor pipe 602. The odor is then adsorbed by the soil layer 604, and the cash crops 605 absorb the CO2 in the odor, reducing carbon emissions. The gravel layer 603 supports the soil layer 604 and prevents clogging of the branch odor pipe 602. Furthermore, the soil acidifies to a certain degree after absorbing the odor. Regular application of wood ash to the soil balances the soil's pH. Thus, the greenhouse 6 not only provides economic benefits but also serves to deodorize, reduce carbon emissions, and increase productivity. This achieves resource utilization of fermentation products, harmless treatment of fermentation odor, and disposal of treated wastewater.

[0049] According to the livestock and poultry manure treatment system provided in the above scheme, its specific method of use includes the following steps:

[0050] (a) The slope of the floor of the livestock and poultry breeding shed 1 allows the excrement excreted by the livestock and poultry to be collected in the manure collecting trough 102, filtered through the grille 103 to remove large particles of impurities in the manure, and then transported to the solid-liquid separation tank 2 through the manure conveying pipe 104;

[0051] (b) After entering the solid-liquid separation tank 2, the manure from the manure conveying pipe 104 flows by gravity to the filter tank 206. The filter screen 207 provided at the bottom of the filter tank 206 separates the manure from the solid and liquid. The separated liquid flows into the lower side of the solid-liquid separation tank 2. The separated solid enters the receiving hopper 301 of the manure drying equipment 3 along the first conveyor belt 205. At the same time, the sludge settled at the bottom of the solid-liquid separation tank 2 is discharged through the sludge discharge port 203 and conveyed to the receiving port of the manure drying equipment 3 via the second conveying equipment.

[0052] (c) The manure and sewage entering the receiving hopper 301 are dispersed into manure and sludge by the manure disperser 302 provided below the receiving hopper 301 of the manure drying equipment 3. The dispersed manure and sewage are evenly scattered on the second conveyor belt 303 for transmission. The manure and sewage are heated by the electric heating plate 304 inside the second conveyor belt 303 and purged by the odor entering through the odor inlet, thereby removing moisture and drying the manure and sewage. In addition, the arrangement of multiple second conveyor belts 303 prolongs the residence time of manure and sewage in the manure drying equipment 3, thereby making the manure and sewage dry more fully. The dried manure and sewage falls into the collecting hopper 306 for discharge, and the odor generated during the drying process is discharged through the outlet 308.

[0053] (d) conveying the manure from the collecting hopper 306 of the manure drying equipment 3 and the straw from the straw conveyor 8 to the feed inlet 513 of the fermentation bin by the action of the belt conveyor 4 and entering the fermentation bin, detecting and maintaining the solid content of the material entering the aerobic fermenter 5 at 40%-45%, the carbon-nitrogen ratio at 25:1-35:1, the fermentation cycle at 7-10 days, the fermentation temperature at 65-80°C, and the maximum fermentation temperature at 100°C;

[0054] (e) stirring the material entering the fermentation bin, wherein the stirring shaft 504 is driven by the second motor 512 to rotate on its own and by the first motor 501 to revolve around it. While stirring, the fan 511 is started to supply external air to the stirring blades on the stirring shaft 504 through the gas main pipe 510 and the gas branch pipe 503. The stirring blades supply oxygen to the material through the air supply holes 505 on the side walls thereof, so that the stirring shaft 504 has an aeration function. Through the rotation and revolution of the stirring shaft 504, the manure, straw and oxygen entering the fermentation bin are fully mixed, and the mixed material is quickly decomposed. The decomposed material enters the discharge hopper 507 through the bin door 508, and the odor generated during the aerobic fermentation process is discharged through the odor outlet 509 and transported to the manure drying equipment 3 through the gas pipeline;

[0055] (f) The odor from the gas outlet 308 of the manure drying equipment 3 is introduced into the odor main pipe 601 through the gas pipeline, and then enters the gravel layer 603 of the greenhouse 6 through the odor branch pipe 602 on the odor main pipe 601. The odor is allowed to freely diffuse through the gaps in the gravel layer 603 to the soil layer 604 and be absorbed by the soil;

[0056] (g) The sewage from the outlet 201 of the solid-liquid separation tank 2 enters the sewage treatment equipment 7 through the sewage inlet. After the sewage meets the treatment standards, part of it is reused in the livestock and poultry breeding shed, and part of it is sent to the greenhouse 6 for irrigation of economic crops 605. The sludge generated during the sewage treatment process is transported to the receiving hopper 301 of the manure drying equipment 3 through the first conveying equipment for drying treatment together with the manure.

[0057] In practical application, the above steps enable a 10,000-head pig farm to produce 125 tons of pig manure with a 3.5% solids content daily (2.5 kg of manure per pig per day and 10 kg of wastewater per pig per day). The manure flows by gravity into the solid-liquid separation tank filtration trough, where a 0.05 mm pore size filter screen at the bottom separates the manure from the liquid. The separated liquid flows into the solid-liquid separation tank, while the separated solids flow along the first conveyor belt into the manure drying equipment's hopper. This results in a daily production of 25 tons of manure with a 15% solids content. A manure disperser, located below the manure drying equipment's hopper, disperses the manure, which is then evenly distributed onto the second conveyor belt. The manure is transported to a thickness of 0.5 cm. The manure is heated by the electric heating plate inside the second conveyor belt and purged with odor gases entering through the odor inlet, removing moisture from the manure and drying it. Electric heating plates heat the manure to 80°C for drying and dehydration. The drying process produces 10.7 tons of manure with a 35% solids content daily. The dried manure falls into a collection hopper for discharge. The dried manure is mixed with 1.78 tons of straw with a 70% solids content and transported by a belt conveyor to an aerobic fermenter. The mixture is thoroughly mixed and aerated by the rotation and revolution of a multi-axis agitator with aeration, promoting rapid composting. The solids content of the material entering the aerobic fermenter is 40%, and the fermentation cycle is 7 days at a temperature of 65-80°C, with a maximum temperature of 100°C. The daily production of fermentation products with a 35% moisture content is 3 tons. Odors from the manure drying equipment outlet enter the greenhouse gravel layer through the odor main and branch pipes, where they diffuse freely into the soil layer and are adsorbed by the soil. Wastewater from the solid-liquid separation tank outlet enters the sewage treatment plant through the sewage inlet for treatment, treating 100 tons of wastewater daily. Part of the treated sewage that meets the standards is reused in livestock and poultry breeding sheds, and part is sent to greenhouses for irrigation of economic crops. The sludge generated during the sewage treatment process is transported to the receiving hopper of the manure drying equipment for treatment.

[0058] In practical application, the above steps have resulted in a daily production of 625 tons of pig manure with a solids content of 4.0% (comprising 2.5 kg of manure per pig per day and 10 kg of wastewater per pig per day). The manure flows by gravity into the solid-liquid separation tank filtration trough, where a 0.2 mm pore size filter screen at the bottom separates the manure from the liquid. The separated liquid flows into the solid-liquid separation tank, while the separated solids flow along the first conveyor belt into the manure drying equipment hopper. This results in a daily production of 160 tons of manure with a solids content of 15%. A manure disperser, located below the manure drying equipment hopper, disperses the manure, which is then evenly distributed on the second conveyor belt. The manure is transported to a thickness of 0.3 cm. The manure is heated by the electric heating plate inside the second conveyor belt and purged with odor gases entering through the odor inlet, removing moisture from the manure and drying it. Electric heating plates heat the manure to 60°C for drying and dehydration. The drying process produces 96 tons of manure with a 25% solids content daily. The dried manure falls into a collection hopper for discharge. The dried manure is mixed with 76.8 tons of straw with a 70% solids content and transported by a belt conveyor to an aerobic fermenter. The mixture is thoroughly mixed and aerated by the rotation and revolution of a multi-axis agitator with aeration, achieving rapid composting. The solids content of the material entering the aerobic fermenter is 45%, and the fermentation cycle is 10 days at a temperature of 65-80°C, with a maximum temperature of 100°C. The daily production of fermentation product is 60 tons with a 35% moisture content. Odors from the manure drying equipment outlet enter the greenhouse's gravel layer through the main and branch odor pipes, where they diffuse freely into the soil layer and are adsorbed by the soil. Wastewater from the solid-liquid separation tank outlet enters the sewage treatment facility through the sewage inlet for treatment, treating 465 tons of wastewater daily. Part of the treated sewage that meets the standards is reused in livestock and poultry breeding sheds, and part is sent to greenhouses for irrigation of economic crops. The sludge generated during the sewage treatment process is transported to the receiving hopper of the manure drying equipment for treatment.

[0059] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A livestock and poultry manure treatment system, comprising an aerobic fermenter (5) having a feed inlet, characterized in that: Also includes: A solid-liquid separation device comprises a solid-liquid separation tank (2) and a transmission component, wherein the solid-liquid separation tank (2) is used to contain feces and sewage, an input end of the transmission component is arranged in the solid-liquid separation tank (2), and the transmission component is used to transmit feces and sewage while achieving solid-liquid separation of the feces and sewage during the transmission process; The manure drying device (3) has a material receiving port and a material discharging port, wherein the material receiving port is arranged at the lower side of the output end of the transmission component and is used to receive the solid manure transmitted by the transmission component. The material discharging port of the manure drying device (3) is connected to the material feeding port of the aerobic fermentation device (5). The manure drying device (3) is used to dry and dehydrate the solid manure to obtain dried and dehydrated manure. The aerobic fermentation device (5) is used to biochemically treat the dried and dehydrated manure. The transmission component includes a first conveyor belt (205) arranged at an angle, wherein the lower end of the first conveyor belt (205) is fixed to one side of the solid-liquid separation tank (2) through a lower support shaft (202), and the higher end of the first conveyor belt (205) is fixed to the top of the other side of the solid-liquid separation tank (2) through an upper support shaft (204), and the higher end of the first conveyor belt (205) extends out of the solid-liquid separation tank (2) and is placed on the upper side of the receiving port of the manure drying equipment (3), and a plurality of filter troughs (206) are evenly distributed on the belt surface of the first conveyor belt (205), and the filter troughs (206) are fixed to the belt surface of the first conveyor belt (205), and the notches of the filter troughs (206) face the side of the running direction of the first conveyor belt (205), and the side wall where the filter troughs (206) are connected to the first conveyor belt (205) is provided with a filter screen (207); The manure drying equipment (3) includes a box body, a first leg (305) is fixedly installed at the bottom of the box body, a receiving hopper (301) is fixedly connected to the upper side of the box body, and a collecting hopper (306) is fixedly connected to the lower side of the box body, and the slot of the receiving hopper (301) is placed on the lower side of the end of the first conveyor belt (205) extending out of the solid-liquid separation tank (2), and a plurality of second conveyor belts (303) are horizontally arranged inside the box body, and the plurality of second conveyor belts (303) are distributed in an S shape from top to bottom, and a heating plate (304) is installed on the inner side of the belt surface of each second conveyor belt (303) A manure disperser (302) is further provided at the connection end between the receiving hopper (301) and the box body, and the manure disperser (302) is used to evenly disperse the manure falling from the receiving hopper (301) on the second conveyor belt (303). An air inlet (307) is provided on the lower side of the box body, and an air outlet (308) is provided on the upper side; the aerobic fermenter (5) includes a fermentation bin, and an odor outlet (509) is further provided on the side wall of the fermentation bin, and the odor outlet (509) is connected to the air inlet (307) on the manure drying equipment (3) through a gas pipeline; A greenhouse (6) is also provided on one side of the aerobic fermenter (5). A soil layer (604) and a gravel layer (603) are laid in sequence at the bottom of the greenhouse (6) from top to bottom. Economic crops (605) are planted in the soil layer (604). A plurality of odor main pipes (601) are inserted in parallel in the gravel layer (603). A plurality of odor branch pipes (602) are evenly distributed on the side of each odor main pipe (601) facing the soil layer (604). One end of the odor branch pipe (602) facing away from the odor main pipe (601) contacts the soil layer (604). One end of the odor main pipe (601) passes through the greenhouse (6) and is connected to the gas outlet (308) on the manure drying equipment (3) through a gas pipeline.

2. The livestock and poultry manure treatment system according to claim 1, characterized in that: A discharge hopper (507) is provided at the bottom of the fermentation bin, and a bin door (508) is provided between the discharge hopper (507) and the fermentation bin. The discharge hopper (507) and the fermentation bin cavity are connected and separated by opening and closing the bin door (508). A feed port (513) is provided at the upper end of the side wall of the fermentation bin, and the collecting hopper (306) of the manure drying equipment (3) and the feed port (513) of the aerobic fermenter (5) are connected by a belt conveyor (4). The top wall of the fermentation bin is connected to a first motor (501) through a fixing member. The output shaft of the first motor (501) penetrates into the fermentation bin and is fixedly mounted with a truss bridge (502). A plurality of second motors (512) are fixedly connected to the lower side of the truss bridge (502), and a vertically arranged stirring shaft (504) is fixedly connected to the output shaft of each second motor (512).

3. The livestock and poultry manure treatment system according to claim 2, characterized in that: The belt conveyor (4) is provided with a discharge port near one side of the fermentation bin, and a straw conveyor (8) is provided on one side of the discharge port, and the discharge end of the straw conveyor (8) is connected to the discharge port. Manure from the collecting hopper (306) at the lower side of the manure drying equipment (3) and straw from the straw conveyor (8) are transported to the feed port (513) of the aerobic fermenter (5) under the action of the belt conveyor (4).

4. The livestock and poultry manure treatment system according to claim 3, characterized in that: A fan (511) is further provided on the outside of the fermentation bin. The air outlet end of the fan (511) is connected to a gas main pipe (510). The gas main pipe (510) is fixed on the top wall of the fermentation bin. One end of the gas main pipe (510) facing away from the fan (511) penetrates into the fermentation bin and is rotatably connected to a gas branch pipe (503). The gas branch pipe (503) is fixed on the truss bridge (502). A mixing blade with a cavity is spirally arranged along the axial direction on each of the stirring shafts (504). Each of the stirring blades is connected to the gas branch pipe (503). A plurality of air supply holes (505) are provided on the stirring blade.

5. The livestock and poultry manure treatment system according to claim 4, characterized in that: A livestock and poultry breeding shed (1) is also provided on one side of the solid-liquid separation tank. The ground of the livestock and poultry breeding shed (1) is provided with a slope. A manure collecting trough (102) is provided on the lower side of the slope. A grille (103) is installed on the lowest side of the manure collecting trough (102). A manure conveying pipe (104) is connected to the discharge port of the manure collecting trough (102) located below the grille (103). The manure conveying pipe (104) is laid on the notch of the solid-liquid separation tank (2), and the end of the manure conveying pipe (104) away from the manure collecting trough (102) extends to the interior of the solid-liquid separation tank (2). A photovoltaic power generation system (101) is also installed on the roof of the livestock and poultry breeding shed (1) for supplying power to electrical equipment in the entire system.

6. The livestock and poultry manure treatment system according to claim 5, characterized in that: A water outlet (201) is provided on the side wall of the solid-liquid separation tank (2), and the water outlet (201) is connected to a sewage treatment device (7). The sewage treatment device (7) includes a sewage tank, and a sewage inlet (701) and a sewage outlet (702) are provided on the side wall of the sewage tank. The sewage inlet (701) is connected to the water outlet (201) on the solid-liquid separation tank (2) through a pipeline. A sludge outlet (703) is also provided on the lower side of the sewage tank. The sludge outlet (703) is connected to the material receiving port of the manure drying device (3) through a first conveying device. The lower side of the solid-liquid separation tank (2) is funnel-shaped, and a sludge discharge port (203) is provided at the bottom of the solid-liquid separation tank (2). The sludge discharge port (203) is connected to the material receiving port of the manure drying device (3) through a second conveying device.

7. The method for using the livestock and poultry manure treatment system according to claim 6, characterized in that: The following steps are involved: (a) The livestock and poultry breeding shed (1) has a slope on the ground, so that the excrement excreted by the livestock and poultry is collected in a manure collecting trough (102), filtered through a grille (103) to remove large-sized impurities in the manure, and then transported to a solid-liquid separation tank (2) through a manure conveying pipe (104); (b) After entering the solid-liquid separation tank (2), the feces from the feces conveying pipe (104) flows to the filter tank (206). The filter screen (207) arranged at the bottom of the filter tank (206) performs solid-liquid separation on the feces. The separated liquid flows into the lower side of the solid-liquid separation tank (2). The separated solid enters the receiving hopper (301) of the feces drying equipment (3) along the first conveyor belt (205). At the same time, the sludge settled at the bottom of the solid-liquid separation tank (2) is discharged through the sludge discharge port (203) and is also transported to the receiving port of the feces drying equipment (3) via the second conveying equipment; (c) The manure and sewage entering the receiving hopper (301) are dispersed by the manure disperser (302) provided below the receiving hopper (301) of the manure drying equipment (3) to disperse the manure and sewage and sludge. The dispersed manure and sewage are evenly scattered on the second conveyor belt (303) for transmission. The manure and sewage are heated by the electric heating plate (304) inside the second conveyor belt (303) and purged by the odor entering through the air inlet (307). The moisture is removed from the manure and sewage, and the manure and sewage are dried. The arrangement of multiple second conveyor belts (303) prolongs the residence time of the manure and sewage in the manure drying equipment (3). The dried manure and sewage fall into the collecting hopper (306) and are discharged, while the odor generated during the drying process is discharged through the air outlet (308); (d) transporting the manure from the collecting hopper (306) of the manure drying equipment (3) and the straw from the straw conveyor (8) to the feed port (513) of the fermentation bin under the action of the belt conveyor (4) and entering the fermentation bin, detecting and maintaining the solid content of the material entering the aerobic fermenter (5) at 40%-45%, the carbon-nitrogen ratio at 25:1-35:1, and the fermentation temperature at 65-80°C. The fermentation period at this stage is 7-10 days; (e) stirring the material entering the fermentation bin, wherein the stirring shaft (504) is driven by the second motor (512) to rotate on its own and by the first motor (501) to revolve on its own. While stirring, the fan (511) is started to supply external air to the stirring blades on the stirring shaft (504) through the gas main pipe (510) and the gas branch pipe (503). The stirring blades supply oxygen to the material through the air supply holes (505) on the side walls thereof, so that the stirring shaft (504) has an aeration function. Through the self-rotation and revolution of the stirring shaft (504), the manure, straw and oxygen entering the fermentation bin are fully mixed, and the mixed material is quickly decomposed. The decomposed material enters the discharge hopper (507) through the bin door (508). The odor generated during the aerobic fermentation process is discharged from the odor outlet (509) and transported to the manure drying equipment (3) through the gas pipeline. (f) The odor from the gas outlet (308) of the manure drying equipment (3) is introduced into the odor main pipe (601) through the gas pipeline, and then enters the gravel layer (603) of the greenhouse (6) through the odor branch pipe (602) on the odor main pipe (601), so that the odor can freely diffuse through the gaps in the gravel layer (603) to the soil layer (604) and be absorbed by the soil; (g) The sewage from the outlet (201) of the solid-liquid separation tank (2) enters the sewage treatment equipment (7) through the sewage inlet. After the sewage is treated and meets the standards, part of it is reused in the livestock and poultry breeding shed (1), and part of it is sent to the greenhouse (6) for irrigation of economic crops (605). The sludge generated during the sewage treatment process is transported to the receiving hopper (301) of the manure drying equipment (3) through the first conveying equipment and is dried together with the manure.

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