Livestock breeding sewage treatment system

Abstract

The invention discloses a livestock breeding sewage treatment system, and relates to the technical field of sewage treatment equipment, the livestock breeding sewage treatment system comprises a sewage treatment tank mechanism, the sewage treatment tank mechanism comprises a sewage anaerobic tank and an outer tank, and the outer tank is arranged on the outer side of the sewage anaerobic tank; an annular area between the outer tank and the sewage anaerobic tank is divided into a pre-aeration regulating tank, an acid-base balance tank and a bacterial culture tank which are sequentially distributed from top to bottom by the two annular partition plates; the device further comprises an anaerobic tank bottom water distribution mechanism, a gas collection, mixing and lifting mechanism, a rising backflow guide mechanism and an anaerobic heating promotion mechanism. According to the livestock breeding sewage treatment system, mixing of sewage entering the light-load area and original sewage can be accelerated by means of the gas collecting, mixing and lifting mechanism under the condition that external power is not used, an anaerobic filler assembly is arranged in the light-load area, sufficient anaerobic reaction can be achieved, the anaerobic filler assembly is matched with the anaerobic heating promoting mechanism, and the sewage treatment efficiency is improved. The heavy-load area and the light-load area can reach proper anaerobic reaction temperature, and the anaerobic treatment efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a livestock breeding wastewater treatment system. Background Technology

[0002] Livestock farming generates a large amount of manure and wastewater, which contains high concentrations of organic matter. If discharged into rivers and lakes, it will cause the water quality to deteriorate continuously. Therefore, it is necessary to use a wastewater treatment system to treat livestock farming wastewater. Existing livestock wastewater treatment systems first separate the manure and wastewater into solid and liquid components. After preliminary pretreatment, the wastewater undergoes anaerobic treatment. However, if the anaerobic treatment is carried out in a low-temperature environment, the anaerobic microorganisms multiply slowly, making anaerobic treatment difficult and inefficient. Summary of the Invention

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a livestock wastewater treatment system. The system features a heavy-load zone at the bottom of the anaerobic tank, where a water distribution mechanism at the bottom allows for thorough mixing of incoming wastewater with the wastewater in the heavy-load zone. A light-load zone is located in the middle of the anaerobic tank, where a gas collection and mixing lifting mechanism accelerates the mixing of wastewater entering the light-load zone without external power. Furthermore, an anaerobic packing assembly is installed in the light-load zone to achieve a full anaerobic reaction. Combined with an anaerobic heating and promoting mechanism, the heavy-load and light-load zones can reach suitable anaerobic reaction temperatures, improving the efficiency of anaerobic treatment. This system overcomes the problem of slow or stopped anaerobic treatment at low temperatures and effectively solves the problems described in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a livestock breeding wastewater treatment system, including a wastewater treatment tank mechanism, wherein the wastewater treatment tank mechanism includes a wastewater anaerobic tank and an outer tank, wherein an outer tank is provided on the outside of the wastewater anaerobic tank, and two annular partitions are provided between the outer tank and the wastewater anaerobic tank, the two annular partitions dividing the annular area between the outer tank and the wastewater anaerobic tank into a pre-aeration and conditioning tank, an acid-base balance tank and a microbial culture tank distributed from top to bottom; Also includes: The anaerobic tank bottom water distribution mechanism is installed at the bottom of the wastewater anaerobic tank. The gas collection, mixing, and lifting mechanism is installed in the middle of the wastewater anaerobic tank; The upward backflow guiding mechanism is installed inside the wastewater anaerobic tank, above the gas collection and mixing lifting mechanism. The anaerobic heating promotion mechanism is installed inside the wastewater anaerobic tank.

[0005] Livestock farming wastewater first undergoes solid-liquid separation to remove solids. Then, it is sent to a pre-aeration and equalization tank for pre-aeration treatment. Next, the wastewater from the pre-aeration and equalization tank is sent through a valve on the upper annular baffle to an acid-base balance tank. Acid-base balancing solution is added to the acid-base balance tank to maintain a suitable pH range. The wastewater from the acid-base balance tank is then sent through a valve on the lower annular baffle to a microbial culture tank for anaerobic bacteria cultivation. Finally, a water distribution mechanism at the bottom of the anaerobic tank sends the wastewater from the microbial culture tank to the heavy-load zone at the bottom of the anaerobic tank. This mechanism promotes mixing of the newly entering wastewater with the wastewater already in the heavy-load zone. The water undergoes preliminary anaerobic treatment in the heavy-load zone. The large amount of biogas produced during the reaction in the heavy-load zone is collected by the gas collection, mixing, and lifting mechanism, and then quickly discharged in the light-load zone in the middle of the wastewater anaerobic tank. The gas lift effect of the biogas accelerates the upward flow of livestock wastewater in the light-load zone. With the help of the rising backflow guiding mechanism, the livestock wastewater entering the light-load zone from the heavy-load zone mixes with the original livestock wastewater in the light-load zone. The anaerobic heating and promoting mechanism heats the livestock wastewater in both the heavy-load and light-load zones, maintaining a suitable temperature in both areas to prevent slow or stopped anaerobic treatment under low-temperature conditions. After anaerobic treatment, the wastewater is discharged from the top of the wastewater anaerobic tank and can enter the contact tank for disinfection treatment, and then enter the anoxic tank for anoxic treatment.

[0006] Furthermore, the anaerobic tank bottom water distribution mechanism includes an accelerating jet nozzle, a conical water distribution reflector is provided at the center of the bottom of the wastewater anaerobic tank, a guide ring is provided on the inner circumference of the bottom of the wastewater anaerobic tank, an accelerating jet nozzle is provided at a position above the middle of the conical water distribution reflector inside the wastewater anaerobic tank, the top outer circumference of the accelerating jet nozzle is connected to the top of the conical guide ring through two spokes, the bottom of the conical guide ring is connected to the top of the mixing water distribution cylinder, the top of the accelerating jet nozzle is connected to the water supply component of the bacterial culture tank, and the bottom of the accelerating jet nozzle extends to the middle of the mixing water distribution cylinder. The water supply component for the microbial culture tank delivers livestock wastewater from the tank into the accelerating jet nozzle. The wastewater jet is discharged through the tip of the nozzle, forming a jet stream. Upon encountering the top of the conical water distribution reflector, the jet stream disperses and reflects. Then, guided by the flow guide ring, the water flow is folded upwards, allowing the newly entering livestock wastewater to quickly mix with the existing wastewater at the bottom of the anaerobic tank. The jet stream discharged from the bottom of the accelerating jet nozzle accelerates the downward flow of wastewater in the mixing water distribution cylinder, creating a low-pressure area at the top of the mixing water distribution cylinder and within the conical flow guide sleeve. This allows the existing livestock wastewater in the area around the top of the conical flow guide sleeve to enter the conical flow guide sleeve and mixing water distribution cylinder, then flow downwards along with the newly entering wastewater ejected from the bottom of the accelerating jet nozzle. This rapid mixing of old and new wastewater, combined with the flow of wastewater at the bottom of the anaerobic tank, promotes thorough anaerobic treatment.

[0007] Furthermore, the gas collection and mixing lifting mechanism includes a primary three-phase separator. The inner wall of the middle part of the sewage anaerobic tank is respectively provided with a conical water collection sleeve and a conical flow guide hood. The conical water collection sleeve is located on the lower side of the conical flow guide hood. The top of the conical water collection sleeve is connected to the bottom of the conical flow guide hood, and the conical water collection sleeve and the conical flow guide hood form an annular gas collection chamber. The primary three-phase separator is provided in the sewage anaerobic tank below the conical water collection sleeve. The end of the primary three-phase separator is connected to the annular gas collection chamber through a biogas riser pipe, and the annular gas collection chamber is connected to the sewage gas lifting and mixing assembly. The primary three-phase separator collects biogas while reducing sludge transfer from the heavily loaded zone at the bottom of the anaerobic digester to the lightly loaded zone in the middle, caused by the upward flow of wastewater. In the heavily loaded zone, the sludge concentration exceeds that in the lightly loaded zone. Biogas is collected in the annular gas collection chamber between the conical water collection sleeve and the conical guide hood via a biogas riser pipe. After collection, the biogas in the annular gas collection chamber is discharged upwards from the center of the bottom of the lightly loaded zone through the wastewater gas lift mixing component. The gas lift action accelerates the upward flow of wastewater in the center of the lightly loaded zone, promoting mixing between newly entering wastewater and existing wastewater, thus improving the anaerobic treatment efficiency in that area. The conical water collection sleeve has a large bottom diameter. The top diameter allows for more concentrated upward flow of wastewater through the conical collection sleeve, reducing the path for wastewater from the heavy-load zone to the light-load zone. The wastewater flowing upward within the conical collection sleeve is more easily lifted upwards by the wastewater gas lift mixing component. The bottom diameter of the conical guide hood is smaller than the top diameter. In the light-load zone, the wastewater flowing upwards by the gas lift encounters the rising backflow guide mechanism and is turned back downwards. Guided by the conical guide hood, the downward-turning water flow re-gathers around the wastewater gas lift mixing component. Thus, with the help of biogas gas lift, the mixing of wastewater in the light-load zone is accelerated, promoting thorough anaerobic treatment without relying on external power components, saving energy.

[0008] Furthermore, the wastewater gas extraction and mixing assembly includes a biogas centralized discharge pipe, a biogas centralized discharge pipe is set at the center of the conical guide shroud, a conical sealing head is set at the bottom of the biogas centralized discharge pipe, the bottom of the biogas centralized discharge pipe is connected to the annular gas collection chamber through a biogas converging radial pipe arranged in an annular array, a mixing water inlet trough is opened in the annular array in the middle of the biogas centralized discharge pipe, and a conical gas baffle is fixedly sleeved on the outside of the biogas centralized discharge pipe at the top of the mixing water inlet trough. The conical sealing head diverts water flowing downwards and upwards. The biogas collected in the annular gas collection chamber enters the centralized biogas discharge pipe through the biogas converging radial pipe. The biogas in the centralized biogas discharge pipe is discharged upwards. Due to the rapid upward overflow of biogas, a gas lifting effect is achieved, which accelerates the rapid upward flow of sewage in the central part of the light load zone. The conical baffle can prevent biogas from being discharged from the mixing inlet trough to the outside of the centralized biogas discharge pipe, thus affecting the concentration of biogas. At the same time, the sewage around the centralized biogas discharge pipe can enter the centralized biogas discharge pipe through the mixing inlet trough. As the biogas in the centralized biogas discharge pipe moves upwards together, the water flow that turns back downwards from the outer periphery of the light load zone is guided by the conical guide hood and will flow again around the centralized biogas discharge pipe. It will also enter the centralized biogas discharge pipe through the mixing inlet trough, realizing the circulation of upward water flow in the center of the light load zone and downward water flow on the outer periphery of the light load zone. Due to the flow of sewage, the anaerobic reaction in the light load zone can be fully carried out, improving the efficiency of the anaerobic reaction.

[0009] Furthermore, the rising backflow guiding mechanism includes an umbrella-shaped backflow guiding hood. The umbrella-shaped backflow guiding hood is located above the middle of the gas collection and mixing lifting mechanism inside the wastewater anaerobic tank. A reflective cone is provided at the bottom center of the umbrella-shaped backflow guiding hood. An annular ridge tube is provided at the top of the umbrella-shaped backflow guiding hood. The bottom of the annular ridge tube is connected to the top of the umbrella-shaped backflow guiding hood. The annular ridge tube is connected to the top inner wall of the wastewater anaerobic tank through multiple rigid gas pipes distributed in an annular array. The top of the rigid gas pipes is connected to the biogas collection and gathering mechanism. Because of the lifting action of the gas collection and mixing mechanism, the upward water flow in the center of the light load zone first encounters the reflective cone, which disperses the upward sewage. Then, the sewage encounters the umbrella-shaped backflow guide hood, which guides the sewage to disperse in all directions. Then, it begins to turn back downwards, flowing downwards along the outer periphery of the light load zone, promoting the formation of a circulation between the upward water flow in the center of the light load zone and the downward water flow on the outer periphery of the light load zone. The biogas gathers at the bottom of the umbrella-shaped backflow guide hood and finally enters the annular ridge pipe, and then enters the biogas collection and distribution mechanism through the rigid gas pipe.

[0010] Furthermore, the biogas collection mechanism includes a two-stage three-phase separator. The two-stage three-phase separator is located above the umbrella-shaped backflow guide hood inside the wastewater anaerobic tank. An annular gas collection pipe is located on the outside of the wastewater anaerobic tank corresponding to the position of the two-stage three-phase separator. The end of the two-stage three-phase separator is connected to the annular gas collection pipe through a vent. A gas collection arch is provided on the top of the wastewater anaerobic tank. A biogas collection pipe is located at the center of the top of the gas collection arch, and the gas collection arch is connected to the top of the annular gas collection pipe through an anti-seepage drainage pipe. The two-stage three-phase separator separates the upward flow of water in the light-load area into three phases. The separated biogas enters the annular gas collection pipe through the vent. Biogas in the rigid gas pipe also enters the annular gas collection pipe. Then, it enters the top of the gas collection dome through the anti-saturation discharge pipe. Finally, it is collected by an external container through the biogas collection pipe. The annular gas collection pipe and the anti-saturation discharge pipe help to bypass the top of the wastewater anaerobic tank, preventing the overflowing biogas from carrying sludge to the top of the two-stage three-phase separator and preventing backflow from the top of the wastewater anaerobic tank. Even if water or sludge enters the annular gas collection pipe, it will eventually be discharged through the vent or the gas outlet, and will not be discharged to the top of the two-stage three-phase separator through the anti-saturation discharge pipe, thus preventing sludge from being discharged from the top of the wastewater anaerobic tank.

[0011] Furthermore, the anaerobic heating promotion mechanism includes risers. Multiple risers are arranged in a circular array at the bottom of the umbrella-shaped reflux guide hood, and an upper hot water annular pipe is arranged at the top of the umbrella-shaped reflux guide hood. The upper hot water annular pipe is connected to the top of each riser, and the bottom of each riser is connected to the top of a lower hot water annular pipe. The lower hot water annular pipe is connected to a water heating component. The water heating component delivers pure warm water into the lower hot water annular pipe, and the wastewater in the lower hot water annular pipe is sent to the upper hot water annular pipe through the risers. This heats the wastewater in the light-load area, promoting the rapid proliferation and growth of anaerobic bacteria in that area, improving the anaerobic treatment effect, and enabling operation in low-temperature environments, avoiding slow or stopped anaerobic reactions at low temperatures.

[0012] Furthermore, the water heating component includes a hot water pump, a hot water chamber within a conical water distribution reflector, a heater within the hot water chamber, one end of a hot water pipe connected to the bottom of the hot water chamber, the other end of the hot water pipe extending to the outside of the outer tank and connected to the inlet of the hot water pump, and the outlet of the hot water pump connected to the lower hot water annular pipe via a hot water transfer pipe. The hot water chamber is filled with purified water, the heater heats the purified water in the hot water chamber, and the hot water pump draws the purified warm water from the hot water chamber through the hot water pipe and then sends it into the lower hot water annular pipe through the hot water transfer pipe.

[0013] Furthermore, the anaerobic heating promotion mechanism also includes a heating coil for the culture tank, a spiral hot water channel two is provided on the side wall of the conical water distribution reflector, a spiral hot water channel one is provided on the side wall of the guide ring, one end of the spiral hot water channel one is connected to the bottom end of the spiral hot water channel two, the top end of the spiral hot water channel two is connected to the top of the hot water chamber through a recovery port, a heating coil for the culture tank is provided at the bottom of the culture tank, one end of the heating coil for the culture tank is connected to the other end of the spiral hot water channel one through a return water channel, and the other end of the heating coil for the culture tank is connected to the upper hot water ring pipe through a hot water recovery pipe.

[0014] The purified warm water in the hot water ring pipe enters the heating coil of the bacterial culture tank through the hot water recovery pipe. The heating coil of the bacterial culture tank can also raise the temperature of the bacterial culture tank, promoting the reproduction of anaerobic bacteria in the bacterial culture tank. The purified warm water in the heating coil of the bacterial culture tank enters the spiral hot water channel one through the return water channel, then enters the spiral hot water channel two, and finally flows back to the hot water chamber through the recovery port, realizing the circulation of purified water. With the help of the anaerobic heating promotion mechanism, the bacterial culture tank, the heavy load zone and the light load zone can be heated. And the purified warm water is used as the medium, the heating is gentle, and the high temperature in the zone avoids killing the anaerobic bacteria. The whole system can operate in a low temperature environment, which can overcome the seasonal limitation of anaerobic wastewater treatment.

[0015] Furthermore, it also includes an anaerobic packing assembly, which includes hollow packing turbine blades. Each riser has multiple rotating sleeves vertically rotatably fitted on it. Limiting rings are fixedly fitted on the upper and lower sides of the riser and the rotating sleeves respectively. Multiple hollow packing turbine blades are arranged in a circular array on the outer side of each rotating sleeve. The outer side of the hollow packing turbine blades is evenly covered with packing through holes, and the hollow packing turbine blades are filled with anaerobic bacteria packing. The limiting ring restricts the vertical position of the rotating sleeve on the riser. In the light-load zone, wastewater flows through the hollow packing turbine blades. The through-holes in the packing allow contact with the anaerobic bacteria on the packing, accelerating the anaerobic treatment of the wastewater. Since the sludge concentration decreases in the light-load zone, the density of anaerobic bacteria may also decrease. Therefore, the hollow packing turbine blades and internal anaerobic packing are installed to increase the anaerobic bacteria density. The flow of wastewater may also drive the hollow packing turbine blades and rotating sleeve to rotate, increasing the degree of contact with the wastewater. Even if the hollow packing turbine blades and rotating sleeve do not rotate, the hollow packing turbine blades still have a turbulent effect on the water flow, promoting full contact between the wastewater and the internal anaerobic packing. Because the rotating sleeve is located on the riser, and pure warm water flows through the riser, the pure warm water can maintain the hollow packing turbine blades around the riser at a suitable temperature range, promoting the growth and proliferation of anaerobic bacteria within the packing.

[0016] Compared with existing technologies, the beneficial effects of this livestock wastewater treatment system are: 1. In this livestock wastewater treatment system, biogas in the annular gas collection chamber is concentrated and then discharged upwards from the center of the bottom of the light-load zone through the wastewater gas lift mixing component. The gas lift action accelerates the upward flow of wastewater in the center of the light-load zone, promoting mixing between newly entering wastewater and existing wastewater, thus improving the anaerobic treatment efficiency in this area. The bottom diameter of the conical water collection sleeve is larger than its top diameter, which concentrates the upward-moving wastewater inside the sleeve, reducing the path for wastewater from the heavy-load zone to flow into the light-load zone. The upward-flowing wastewater within the conical water collection sleeve is more easily lifted upwards by the wastewater gas lift mixing component. The bottom diameter of the conical guide hood is smaller than its top diameter. Wastewater flowing upwards in the light-load zone due to the gas lift encounters the rising backflow guide mechanism and is turned downwards. Guided by the conical guide hood, the downward-turning water flow re-gathers around the wastewater gas lift mixing component. Thus, the gas lift effect of biogas accelerates the mixing of wastewater in the light-load zone, promoting thorough anaerobic treatment without relying on external power components, saving energy.

[0017] 2. This livestock wastewater treatment system has a heavy-load zone at the bottom of the anaerobic tank. The water distribution mechanism at the bottom of the anaerobic tank allows the incoming wastewater to mix thoroughly with the wastewater in the heavy-load zone. The middle part of the anaerobic tank is a light-load zone. The gas collection and mixing lifting mechanism can accelerate the mixing of the wastewater entering the light-load zone with the original wastewater without the need for external power. The light-load zone is equipped with anaerobic packing components to achieve a full anaerobic reaction. With the anaerobic heating and promoting mechanism, the heavy-load zone and the light-load zone can reach a suitable anaerobic reaction temperature, improving the efficiency of anaerobic treatment and overcoming the problem of slow or stopped anaerobic treatment at low temperatures.

[0018] 3. This livestock breeding wastewater treatment system mainly adopts anaerobic treatment, which has a high load, low residual sludge volume, and low nitrogen and phosphorus nutrient requirements. The anaerobic treatment process has a certain bactericidal effect, which can kill parasites and viruses in wastewater and sewage. Anaerobic activated sludge can be stored for a long time, so it can be operated seasonally or intermittently. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the livestock breeding wastewater treatment system of the present invention; Figure 2 This is a schematic diagram of the rear structure of the livestock breeding wastewater treatment system of the present invention; Figure 3 This is a top view schematic diagram of the livestock breeding wastewater treatment system of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at point A in the middle; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 7 This is a partial structural diagram of the livestock wastewater treatment system of the present invention. Figure 1 ; Figure 8 This is a partial structural diagram of the livestock wastewater treatment system of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the anaerobic packing assembly in the livestock wastewater treatment system of the present invention; In the diagram: 1-Wastewater treatment tank mechanism, 11-Anaerobic wastewater tank, 12-Outer tank, 13-Annular baffle, 14-Pre-aeration pipe, 15-Pre-aeration head, 16-Air supply pipe, 17-Acid / alkali solution addition pipe, 18-Addition valve, 2-Anaerobic tank bottom water distribution mechanism, 21-Conical water distribution reflector, 22-Guide ring, 23-Cultural culture tank outlet pipe, 24-Water distribution pump, 25-Water distribution pipe, 26-Spoke, 2 7-Conical drainage sleeve, 28-Mixing water distribution cylinder, 29-Accelerating injection nozzle, 3-Gas collection and mixing lifting mechanism, 31-Biogas riser pipe, 32-Conical water collection sleeve, 33-Conical guide hood, 34-Biogas confluence radial pipe, 35-Biogas centralized upper discharge pipe, 36-Conical sealing head, 37-Conical air baffle, 38-Mixing water inlet trough, 39-First-stage three-phase separator, 4-Rising backflow guiding mechanism, 41-Rigid gas pipe, 4 2-Annular ridge pipe, 43-Umbrella-shaped backflow guide cover, 44-Reflective cone, 5-Biogas confluence and collection mechanism, 51-Secondary three-phase separator, 52-Annular gas collection pipe, 53-Anti-saturation drainage pipe, 54-Gas collection dome, 55-Biogas collection pipe, 6-Overflow assembly, 61-Annular water outlet weir, 62-Overflow drainage pipe, 7-Anaerobic heating promotion mechanism, 71-Hot water chamber, 72-Heater, 73-Hot water pipe, 74-Hot water pump, 75-Hot water transfer pipe, 76-Lower hot water annular pipe, 77-Riser, 78-Upper hot water annular pipe, 79-Hot water recovery pipe, 710-Heating coil of bacterial culture tank, 711-Return water channel, 712-Spiral hot water channel one, 713-Spiral hot water channel two, 714-Recovery port, 8-Anaerobic packing assembly, 81-Rotating sleeve, 82-Limiting ring, 83-Hollow packing turbine blade, 84-Packing through hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1 to 9 This embodiment provides a technical solution: a livestock breeding wastewater treatment system, including a wastewater treatment tank mechanism 1. The wastewater treatment tank mechanism 1 includes a wastewater anaerobic tank 11. The wastewater treatment tank mechanism 1 also includes an outer tank 12 and an annular partition 13. The outer tank 12 is arranged outside the wastewater anaerobic tank 11. Two annular partitions 13 are arranged between the outer tank 12 and the wastewater anaerobic tank 11. The two annular partitions 13 divide the annular area between the outer tank 12 and the wastewater anaerobic tank 11 into a pre-aeration and conditioning tank, an acid-base balance tank, and a microbial culture tank, which are distributed from top to bottom.

[0022] The wastewater treatment tank mechanism 1 also includes a pre-aeration pipe 14, a pre-aeration head 15, an air supply pipe 16, an acid / alkali solution addition pipe 17, and an addition valve 18. The pre-aeration pipe 14 is installed at the bottom of the pre-aeration regulating tank. The pre-aeration heads 15 are installed at equal intervals on the pre-aeration pipe 14. One end of the pre-aeration pipe 14 is connected to the air supply pipe 16. The other end of the air supply pipe 16 extends to the outside of the outer tank 12 and is connected to an external air pump. The external air pump supplies air into the pre-aeration pipe 14 through the air supply pipe 16 and then disperses it through the pre-aeration heads 15, which can pre-aerate the pre-aeration regulating tank. The acid / alkali balance tank is connected to the acid / alkali solution addition pipe 17. An addition valve 18 is installed on the acid / alkali solution addition pipe 17. By opening the addition valve 18, acid / alkali balance solution can be added to the acid / alkali balance tank through the acid / alkali solution addition pipe 17.

[0023] It also includes a water distribution mechanism at the bottom of the anaerobic tank 2, a gas collection, mixing and lifting mechanism 3, an upward reflux guiding mechanism 4, and an anaerobic heating promotion mechanism 7.

[0024] The anaerobic tank bottom water distribution mechanism 2 is installed at the bottom of the sewage anaerobic tank 11.

[0025] The anaerobic tank bottom water distribution mechanism 2 includes a conical water distribution reflector 21, a guide ring 22, spokes 26, a conical drainage sleeve 27, a mixing water distribution cylinder 28, an accelerating jet nozzle 29, and a bacterial culture tank water supply assembly. The conical water distribution reflector 21 is located at the center of the bottom of the wastewater anaerobic tank 11. The guide ring 22 is integrally formed on the inner circumference of the bottom of the wastewater anaerobic tank 11. The accelerating jet nozzle 29 is located above the middle of the conical water distribution reflector 21 inside the wastewater anaerobic tank 11. The top outer circumference of the accelerating jet nozzle 29 is connected to the top of the conical drainage sleeve 27 through two spokes 26. The top diameter of the conical drainage sleeve 27 is larger than the bottom diameter. The bottom of the conical drainage sleeve 27 is integrally formed and connected to the top of the mixing water distribution cylinder 28. The top of the accelerating jet nozzle 29 is connected to the bacterial culture tank water supply assembly, and the bottom of the accelerating jet nozzle 29 extends to the middle of the mixing water distribution cylinder 28.

[0026] The water supply assembly for the culture tank includes a culture tank outlet pipe 23, a water distribution pump 24, and a water distribution pipe 25. The bottom of the culture tank is connected to the inlet of the water distribution pump 24 through the culture tank outlet pipe 23, and the outlet of the water distribution pump 24 is connected to the top of the acceleration nozzle 29 through the water distribution pipe 25. The water distribution pump 24 draws out the sewage in the culture tank through the culture tank outlet pipe 23 and then sends it into the acceleration nozzle 29 through the water distribution pipe 25.

[0027] The water supply component for the microbial culture tank delivers livestock wastewater from the tank into the accelerating jet nozzle 29. The wastewater jet is discharged through the tip of the nozzle 29, forming a jet stream. Upon encountering the top of the conical water distribution reflector 21, the jet stream is dispersed and reflected. Then, guided by the guide ring 22, the water flow is folded upwards, allowing the newly entering livestock wastewater to quickly mix with the existing livestock wastewater at the bottom of the anaerobic wastewater tank 11. The wastewater jet discharged from the bottom of the accelerating jet nozzle 29 further accelerates the mixing of wastewater within the water distribution cylinder 28. The downward flow velocity creates a low-pressure area at the top of the mixing and distribution cylinder 28 and inside the conical drainage sleeve 27. This allows the original livestock wastewater in the area around the top of the conical drainage sleeve 27 inside the anaerobic wastewater tank 11 to enter the conical drainage sleeve 27 and the mixing and distribution cylinder 28. Then, along with the newly entering livestock wastewater sprayed from the bottom of the accelerating nozzle 29, it flows downward, which also allows the old and new livestock wastewater to mix quickly. The flow of wastewater in the bottom area of ​​the anaerobic wastewater tank 11 promotes the full implementation of anaerobic treatment.

[0028] The gas collection and mixing lifting mechanism 3 is installed in the middle of the sewage anaerobic tank 11.

[0029] The gas collection and mixing lifting mechanism 3 includes a biogas riser pipe 31, a conical water collection sleeve 32, a conical guide hood 33, a primary three-phase separator 39, and a wastewater gas lifting mixing assembly. The conical water collection sleeve 32 and the conical guide hood 33 are respectively installed on the inner wall of the middle part of the wastewater anaerobic tank 11. The conical water collection sleeve 32 is located below the conical guide hood 33. The top of the conical water collection sleeve 32 is connected to the bottom of the conical guide hood 33, and the conical water collection sleeve 32 and the conical guide hood 33 form an annular gas collection chamber. The primary three-phase separator 39 is installed in the wastewater anaerobic tank 11 below the conical water collection sleeve 32. The end of the primary three-phase separator 39 is connected to the annular gas collection chamber through the biogas riser pipe 31, and the annular gas collection chamber is connected to the wastewater gas lifting mixing assembly. The primary three-phase separator 39 can collect biogas and reduce the transfer of sludge from the bottom heavy-load zone to the middle light-load zone of the anaerobic wastewater tank 11 as the wastewater flows upward. Since the sludge concentration in the heavy-load zone exceeds that in the light-load zone, biogas enters the annular gas collection chamber between the conical water collection sleeve 32 and the conical guide hood 33 through the biogas riser pipe 31 for collection. After collection, the biogas in the annular gas collection chamber is discharged upward from the bottom center of the light-load zone through the wastewater gas lift mixing component. The gas lift action accelerates the upward flow of wastewater in the center of the light-load zone, promoting mixing of newly entering wastewater with the existing wastewater and improving the anaerobic treatment efficiency in this area. The bottom of the conical water collection sleeve 32... The diameter of the conical collection sleeve 33 is larger than the top diameter, which can concentrate the sewage flowing upward through the inner side of the conical collection sleeve 32. This reduces the path for sewage to flow from the heavy-load zone to the light-load zone. The sewage flowing upward in the conical collection sleeve 32 is more easily driven upward by the sewage gas lift mixing component through the gas lift action. The bottom diameter of the conical guide hood 33 is smaller than the top diameter. The sewage flowing upward in the light-load zone through the gas lift action is turned back downward after encountering the rising backflow guide mechanism 4. The downward-turned water flow is guided by the conical guide hood 33 and will re-gather around the sewage gas lift mixing component. Thus, with the help of the biogas gas lift action, the mixing of sewage in the light-load zone can be accelerated, promoting the full implementation of anaerobic treatment without relying on external power components, saving energy consumption.

[0030] The wastewater gas extraction and mixing assembly includes a biogas converging radial pipe 34, a biogas centralized upper discharge pipe 35, a conical sealing head 36, a conical air baffle 37, and a mixing water inlet trough 38. The biogas centralized upper discharge pipe 35 is located at the center of the conical guide hood 33, and the conical sealing head 36 is located at the bottom of the biogas centralized upper discharge pipe 35. The bottom of the biogas centralized upper discharge pipe 35 is connected to the annular gas collection chamber through a ring array of biogas converging radial pipes 34. There are four biogas converging radial pipes 34. The middle annular array of biogas centralized upper discharge pipes 35 has six mixing water inlet troughs 38. The conical air baffle 37 is fixedly sleeved on the outside of the biogas centralized upper discharge pipe 35 at the top of the mixing water inlet trough 38. The top diameter of the conical air baffle 37 is smaller than the bottom diameter. The conical sealing head 36 diverts water flowing downwards and upwards. The biogas collected in the annular gas collection chamber enters the biogas centralized discharge pipe 35 through the biogas confluence radial pipe 34. The biogas in the centralized discharge pipe 35 is then discharged upwards. Due to the rapid upward overflow of the biogas, a gas lifting effect is achieved, accelerating the upward flow of sewage in the central part of the light-load zone. The conical gas baffle 37 prevents biogas from escaping from the mixing inlet trough 38 to the outside of the centralized discharge pipe 35, thus avoiding affecting the concentration of biogas. Simultaneously, the sewage around the centralized discharge pipe 35 can... The wastewater enters the biogas centralized discharge pipe 35 through the mixing inlet trough 38. As the biogas in the centralized discharge pipe 35 moves upward, the water flow that turns back downward from the outer periphery of the light load zone is guided by the conical guide hood 33 and flows around the centralized discharge pipe 35 again. It also enters the centralized discharge pipe 35 through the mixing inlet trough 38, realizing the circulation of upward water flow in the center of the light load zone and downward water flow on the outer periphery of the light load zone. Due to the flow of wastewater, the anaerobic reaction in the light load zone can be fully carried out, improving the efficiency of the anaerobic reaction.

[0031] The rising backflow guiding mechanism 4 is installed inside the sewage anaerobic tank 11, located above the gas collection and mixing lifting mechanism 3.

[0032] The rising backflow guiding mechanism 4 includes a rigid gas pipe 41, an annular ridge pipe 42, an umbrella-shaped backflow guiding hood 43, and a reflective cone 44. The umbrella-shaped backflow guiding hood 43 is located above the middle of the gas collection and mixing lifting mechanism 3 inside the sewage anaerobic tank 11. A reflective cone 44 is located at the bottom center of the umbrella-shaped backflow guiding hood 43. An annular ridge pipe 42 is located at the top of the umbrella-shaped backflow guiding hood 43. The bottom of the annular ridge pipe 42 is connected to the top of the umbrella-shaped backflow guiding hood 43. The annular ridge pipe 42 is connected to the top inner wall of the sewage anaerobic tank 11 through a plurality of rigid gas pipes 41 distributed in an annular array. The specific number of rigid gas pipes 41 is six. The top of the rigid gas pipes 41 is connected to the biogas collection and gathering mechanism 5. Because the gas collection and mixing lifting mechanism 3 lifts the water flow upward in the center of the light load zone, it will first encounter the reflective cone 44. The reflective cone 44 disperses the upward sewage. Then the sewage encounters the umbrella-shaped return flow guide hood 43. The sewage is guided by the umbrella-shaped return flow guide hood 43 to disperse around and then begins to turn back downward, flowing downward along the outer periphery of the light load zone. This promotes the formation of a circulation of upward water flow in the center of the light load zone and downward water flow on the outer periphery of the light load zone. The biogas gathers at the bottom of the umbrella-shaped return flow guide hood 43 and finally enters the annular ridge pipe 42. Then it enters the biogas collection and gathering mechanism 5 through the rigid gas pipe 41.

[0033] The biogas collection and distribution mechanism 5 includes a two-stage three-phase separator 51, an annular gas collection pipe 52, a seepage-proof biogas discharge pipe 53, a gas collection dome 54, and a biogas collection pipe 55. The two-stage three-phase separator 51 is located above the umbrella-shaped backflow guide hood 43 inside the sewage anaerobic tank 11. The annular gas collection pipe 52 is located on the outside of the sewage anaerobic tank 11 corresponding to the position of the two-stage three-phase separator 51. The end of the two-stage three-phase separator 51 is connected to the annular gas collection pipe 52 through a vent. The top of the sewage anaerobic tank 11 is equipped with a gas collection dome 54. The biogas collection pipe 55 is located at the center of the top of the gas collection dome 54, and the gas collection dome 54 is connected to the top of the annular gas collection pipe 52 through the seepage-proof biogas discharge pipe 53.

[0034] Both the first-stage three-phase separator 39 and the second-stage three-phase separator 51 adopt existing technologies.

[0035] The secondary three-phase separator 51 performs three-phase separation on the upward water flow in the light load area. The separated biogas enters the annular gas collection pipe 52 through the vent. The biogas in the rigid gas pipe 41 also enters the annular gas collection pipe 52. Then, it enters the top of the gas collection dome 54 through the anti-saturation discharge pipe 53. Finally, it is collected by the external container through the biogas collection pipe 55. With the help of the annular gas collection pipe 52 and the anti-saturation discharge pipe 53, the biogas bypasses the top of the sewage anaerobic tank 11, preventing the overflowing biogas from carrying sludge to the top of the secondary three-phase separator 51 and preventing backflow from the top of the sewage anaerobic tank 11. Even if water or sludge enters the annular gas collection pipe 52, it will eventually be discharged through the vent and will not be discharged to the top of the secondary three-phase separator 51 through the anti-saturation discharge pipe 53. This can prevent sludge from being discharged from the top of the sewage anaerobic tank 11.

[0036] The anaerobic heating promotion mechanism 7 is installed inside the sewage anaerobic tank 11.

[0037] The anaerobic heating promotion mechanism 7 includes a lower hot water ring pipe 76, risers 77, an upper hot water ring pipe 78, and a water heating component. Multiple risers 77 are arranged in a ring array at the bottom of the umbrella-shaped backflow guide hood 43; the specific number of risers 77 can be set to nine. The upper hot water ring pipe 78 is located at the top of the umbrella-shaped backflow guide hood 43, connecting to the top of each riser 77. The bottom of each riser 77 connects to the top of the lower hot water ring pipe 76, which is connected to the water heating component. The water heating component delivers pure warm water into the lower hot water ring pipe 76. Wastewater in the lower hot water ring pipe 76 is then sent to the upper hot water ring pipe 78 through the risers 77. This heats the wastewater in the lightly loaded area, promoting the rapid proliferation and growth of anaerobic bacteria in that area, improving the anaerobic treatment effect, and enabling operation in low-temperature environments, avoiding slow or stopped anaerobic reactions at low temperatures.

[0038] The water-based heating system includes a hot water chamber 71, a heater 72, a hot water pipe 73, a hot water pump 74, and a hot water transfer pipe 75. The hot water chamber 71 is housed within a conical water distribution reflector 21, and the heater 72 is installed inside the hot water chamber 71. One end of the hot water pipe 73 is connected to the bottom of the hot water chamber 71, and the other end of the hot water pipe 73 extends to the outside of the outer tank 12 and connects to the inlet of the hot water pump 74. The outlet of the hot water pump 74 is connected to a lower hot water annular pipe 76 via the hot water transfer pipe 75. The hot water chamber 71 is filled with purified water. The heater 72 heats the purified water in the hot water chamber 71, and the hot water pump 74 extracts the purified warm water from the hot water chamber 71 through the hot water pipe 73 and then sends it into the lower hot water annular pipe 76 through the hot water transfer pipe 75.

[0039] The anaerobic heating promotion mechanism 7 also includes a hot water recovery pipe 79, a culture tank heating coil 710, a return water channel 711, a spiral hot water channel one 712, a spiral hot water channel two 713, and a recovery port 714. The side wall of the conical water distribution reflector 21 is provided with a spiral hot water channel two 713, and the side wall of the guide ring sleeve 22 is provided with a spiral hot water channel one 712. One end of the spiral hot water channel one 712 is connected to the bottom end of the spiral hot water channel two 713, and the top end of the spiral hot water channel two 713 is connected to the top of the hot water chamber 71 through the recovery port 714. The bottom of the culture tank is provided with a culture tank heating coil 710, one end of the culture tank heating coil 710 is connected to the other end of the spiral hot water channel one 712 through the return water channel 711, and the other end of the culture tank heating coil 710 is connected to the hot water ring pipe 78 through the hot water recovery pipe 79.

[0040] The pure warm water in the hot water ring pipe 78 enters the heating coil 710 of the bacterial culture tank through the hot water recovery pipe 79. The heating coil 710 can also heat the bacterial culture tank, promoting the reproduction of anaerobic bacteria in the bacterial culture tank. The pure warm water in the heating coil 710 enters the spiral hot water channel 1 712 through the return water channel 711, then enters the spiral hot water channel 2 713, and finally flows back to the hot water chamber 71 through the recovery port 714, realizing the circulation of pure water. With the help of the anaerobic heating promotion mechanism 7, the bacterial culture tank, the heavy load area and the light load area can be heated. Using pure warm water as the medium, the heating is gentle, avoiding the high temperature in the zone from killing the anaerobic bacteria. The whole system can operate in a low temperature environment, which can overcome the seasonal limitation of anaerobic wastewater treatment.

[0041] In operation, livestock wastewater first undergoes solid-liquid separation to remove solids. Then, it is sent to a pre-aeration and equalization tank for pre-aeration treatment. Next, the wastewater in the pre-aeration and equalization tank is sent through a valve on the upper annular baffle 13 to an acid-base balance tank. Acid-base balancing solution can be added to the acid-base balance tank to maintain a suitable pH range. The wastewater in the acid-base balance tank is then sent through a valve on the lower annular baffle 13 to a microbial culture tank for anaerobic bacteria cultivation. Finally, the wastewater from the microbial culture tank is sent to the heavy-load zone at the bottom of the anaerobic tank 11 via the bottom water distribution mechanism 2. This mechanism facilitates mixing of the newly entering wastewater with the wastewater already in the heavy-load zone. The livestock wastewater undergoes preliminary anaerobic treatment in the heavy-load zone. The large amount of biogas produced during the reaction in the heavy-load zone is collected by the gas collection, mixing, and lifting mechanism 3, and then quickly discharged in the light-load zone in the middle of the sewage anaerobic tank 11. With the help of the biogas lifting effect, the livestock wastewater in the light-load zone is accelerated to flow upward. In conjunction with the rising backflow guiding mechanism 4, the livestock wastewater entering the light-load zone from the heavy-load zone is mixed with the original livestock wastewater in the light-load zone. The anaerobic heating and promoting mechanism 7 heats the livestock wastewater in the heavy-load zone and the light-load zone to maintain the two zones at a suitable temperature, avoiding slow or stopped anaerobic treatment under low temperature conditions. After anaerobic treatment, the wastewater is discharged from the top of the sewage anaerobic tank 11 and can enter the contact tank for disinfection treatment, and then enter the anoxic tank for anoxic treatment.

[0042] Example 2, please refer to Figures 1 to 9 This embodiment provides a technical solution: a livestock breeding wastewater treatment system. This embodiment has a roughly the same structure as Embodiment 1, with the following differences: It also includes an anaerobic packing assembly 8, which includes a rotating sleeve 81, a limiting ring 82, hollow packing turbine blades 83, and packing through holes 84. Each riser 77 is vertically rotatably sleeved with multiple rotating sleeves 81. The riser 77 is fixedly sleeved with limiting rings 82 at the upper and lower sides of the rotating sleeves 81. Multiple hollow packing turbine blades 83 are arranged in a ring array on the outer side of each rotating sleeve 81. Specifically, there are five hollow packing turbine blades 83 on each rotating sleeve 81. The outer side of the hollow packing turbine blades 83 is evenly covered with packing through holes 84. The hollow packing turbine blades 83 are filled with anaerobic bacteria packing. The limiting ring 82 limits the vertical position of the rotating sleeve 81 in the riser 77. When the sewage flows in the light load zone, it will encounter the hollow packing turbine blades 83. Through the packing through holes 84, it can contact the anaerobic bacteria on the anaerobic packing, accelerating the anaerobic treatment of the sewage. Since the sludge concentration is reduced in the light load zone, the density of anaerobic bacteria may decrease. Therefore, the hollow packing turbine blades 83 and the internal anaerobic packing are set to increase the density of anaerobic bacteria. The flow of sewage may also drive the hollow packing turbine blades 83 and the rotating sleeve 81 to rotate, increasing the degree of contact with sewage. Even if the hollow packing turbine blades 83 and the rotating sleeve 81 do not rotate, the hollow packing turbine blades 83 also have a turbulent effect on the water flow, promoting full contact between sewage and the internal anaerobic packing. Since the rotating sleeve 81 is set on the riser 77, and pure warm water will pass through the riser 77, the pure warm water can keep the hollow packing turbine blades 83 around the riser 77 in a suitable temperature range, promoting the growth and proliferation of anaerobic bacteria in the anaerobic packing.

[0043] In other embodiments, please refer to Figures 1 to 9 The system also includes an overflow assembly 6, which comprises an annular effluent weir 61 and an overflow drain pipe 62. An annular effluent weir 61 is located on the inner top of the anaerobic wastewater tank 11. The top of the annular effluent weir 61 is arranged with a ring array of mud-blocking teeth. The upper layer water from the secondary three-phase separator 51 enters the annular effluent weir 61 through the gaps between the adjacent mud-blocking teeth. The overflow drain pipe 62 extends into the annular effluent weir 61 to discharge the water inside the annular effluent weir 61. Thus, the water that has undergone sufficient anaerobic treatment is discharged. The discharged water can then enter the stripping tank, contact tank, and anoxic tank for further treatment as needed, thereby further improving the wastewater treatment effect.

[0044] It is worth noting that the water distribution pump 24, heater 72, and hot water pump 74 disclosed in the above embodiments are all controlled by an external PLC controller. The control method adopts the methods commonly used in the prior art. A pH meter can also be installed in the acid-base balance tank as needed, and temperature sensors can be installed in the middle and bottom of the sewage anaerobic tank 11.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A livestock breeding wastewater treatment system, comprising a wastewater treatment tank mechanism (1), wherein the wastewater treatment tank mechanism (1) includes an anaerobic wastewater tank (11), characterized in that, The wastewater treatment tank mechanism (1) also includes an outer tank (12). The outer tank (12) is provided on the outside of the wastewater anaerobic tank (11). Two annular partitions (13) are provided between the outer tank (12) and the wastewater anaerobic tank (11). The two annular partitions (13) divide the annular area between the outer tank (12) and the wastewater anaerobic tank (11) into a pre-aeration and conditioning tank, an acid-base balance tank and a culture tank distributed from top to bottom. Also includes: The anaerobic tank bottom water distribution mechanism (2) is installed at the bottom of the sewage anaerobic tank (11); The gas collection and mixing lifting mechanism (3) is installed in the middle of the sewage anaerobic tank (11); The rising backflow guiding mechanism (4) is installed inside the sewage anaerobic tank (11) above the gas collection and mixing lifting mechanism (3); The anaerobic heating promotion mechanism (7) is installed inside the sewage anaerobic tank (11).

2. The livestock wastewater treatment system according to claim 1, characterized in that: The anaerobic tank bottom water distribution mechanism (2) includes an accelerating nozzle (29). A conical water distribution reflector (21) is provided at the center of the bottom of the sewage anaerobic tank (11). A guide ring (22) is provided on the inner circumference of the bottom of the sewage anaerobic tank (11). An accelerating nozzle (29) is provided in the sewage anaerobic tank (11) at a position above the middle of the conical water distribution reflector (21). The top outer circumference of the accelerating nozzle (29) is connected to the top of the conical drainage sleeve (27) through two spokes (26). The bottom of the conical drainage sleeve (27) is connected to the top of the mixing water distribution cylinder (28). The top of the accelerating nozzle (29) is connected to the water supply component of the bacterial culture tank. The bottom of the accelerating nozzle (29) extends to the middle of the mixing water distribution cylinder (28).

3. The livestock wastewater treatment system according to claim 1, characterized in that: The gas collection and mixing lifting mechanism (3) includes a first-stage three-phase separator (39). The inner wall of the middle part of the sewage anaerobic tank (11) is provided with a conical water collection sleeve (32) and a conical flow guide hood (33). The conical water collection sleeve (32) is located on the lower side of the conical flow guide hood (33). The top of the conical water collection sleeve (32) is connected to the bottom of the conical flow guide hood (33), and the conical water collection sleeve (32) and the conical flow guide hood (33) form an annular gas collection chamber. The first-stage three-phase separator (39) is provided in the sewage anaerobic tank (11) below the conical water collection sleeve (32). The end of the first-stage three-phase separator (39) is connected to the annular gas collection chamber through the biogas riser pipe (31), and the annular gas collection chamber is connected to the sewage gas lifting mixing component.

4. The livestock breeding wastewater treatment system according to claim 3, characterized in that: The wastewater gas extraction and mixing assembly includes a biogas central discharge pipe (35), a biogas central discharge pipe (35) is provided at the center of a conical guide hood (33), a conical sealing head (36) is provided at the bottom of the biogas central discharge pipe (35), the bottom of the biogas central discharge pipe (35) is connected to an annular gas collection chamber through a biogas converging radial pipe (34) arranged in an annular array, a mixing water inlet trough (38) is opened in the annular array in the middle of the biogas central discharge pipe (35), and a conical gas baffle (37) is fixedly sleeved on the outside of the biogas central discharge pipe (35) at the top of the mixing water inlet trough (38).

5. The livestock wastewater treatment system according to claim 2, characterized in that: The rising backflow guiding mechanism (4) includes an umbrella-shaped backflow guiding cover (43). The umbrella-shaped backflow guiding cover (43) is located above the middle of the gas collection and mixing lifting mechanism (3) inside the sewage anaerobic tank (11). A reflective cone (44) is provided at the bottom center of the umbrella-shaped backflow guiding cover (43). An annular ridge tube (42) is provided at the top of the umbrella-shaped backflow guiding cover (43). The bottom of the annular ridge tube (42) is connected to the top of the umbrella-shaped backflow guiding cover (43). The annular ridge tube (42) is connected to the top inner wall of the sewage anaerobic tank (11) through multiple rigid gas pipes (41) distributed in an annular array. The top of the rigid gas pipes (41) is connected to the biogas collection and gathering mechanism (5).

6. The livestock wastewater treatment system according to claim 5, characterized in that: The biogas collection mechanism (5) includes a two-stage three-phase separator (51). The two-stage three-phase separator (51) is located above the umbrella-shaped backflow guide hood (43) inside the sewage anaerobic tank (11). An annular gas collection pipe (52) is located on the outside of the sewage anaerobic tank (11) corresponding to the position of the two-stage three-phase separator (51). The end of the two-stage three-phase separator (51) is connected to the annular gas collection pipe (52) through a gas hole. A gas collection arch (54) is provided on the top of the sewage anaerobic tank (11). A biogas collection pipe (55) is provided at the center of the top of the gas collection arch (54). The gas collection arch (54) is connected to the top of the annular gas collection pipe (52) through an anti-seepage drainage pipe (53).

7. The livestock wastewater treatment system according to claim 5, characterized in that: The anaerobic heating promotion mechanism (7) includes a riser (77). The bottom of the umbrella-shaped reflux guide hood (43) is arranged with a ring array of multiple risers (77). The top of the umbrella-shaped reflux guide hood (43) is provided with an upper hot water ring pipe (78). The upper hot water ring pipe (78) is connected to the top of each riser (77). The bottom of each riser (77) is connected to the top of the lower hot water ring pipe (76). The lower hot water ring pipe (76) is connected to the water heating component.

8. The livestock wastewater treatment system according to claim 7, characterized in that: The water heating assembly includes a hot water pump (74), a hot water chamber (71) is provided inside the conical water distribution reflector (21), a heater (72) is provided inside the hot water chamber (71), one end of a hot water pipe (73) is connected to the bottom of the hot water chamber (71), the other end of the hot water pipe (73) extends to the outside of the outer tank (12) and is connected to the inlet of the hot water pump (74), and the outlet of the hot water pump (74) is connected to the lower hot water ring pipe (76) through the hot water transfer pipe (75).

9. The livestock wastewater treatment system according to claim 8, characterized in that: The anaerobic heating promotion mechanism (7) also includes a heating coil (710) for the culture tank. The side wall of the conical water distribution reflector (21) is provided with a spiral hot water channel two (713), and the side wall of the guide ring (22) is provided with a spiral hot water channel one (712). One end of the spiral hot water channel one (712) is connected to the bottom end of the spiral hot water channel two (713). The top end of the spiral hot water channel two (713) is connected to the top of the hot water chamber (71) through the recovery port (714). The bottom of the culture tank is provided with a heating coil (710) for the culture tank. One end of the heating coil (710) for the culture tank is connected to the other end of the spiral hot water channel one (712) through the return water channel (711). The other end of the heating coil (710) for the culture tank is connected to the hot water ring pipe (78) through the hot water recovery pipe (79).

10. The livestock wastewater treatment system according to claim 7, characterized in that: It also includes an anaerobic packing assembly (8), which includes hollow packing turbine blades (83). Each riser (77) is vertically rotatably fitted with multiple rotating sleeves (81). The riser (77) is fixedly fitted with limiting rings (82) on the upper and lower sides of the rotating sleeves (81). Multiple hollow packing turbine blades (83) are arranged in a ring array on the outer side of each rotating sleeve (81). The outer side of the hollow packing turbine blades (83) is evenly covered with packing through holes (84). The hollow packing turbine blades (83) are filled with anaerobic bacteria packing.

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