Chicken manure fermentation treatment system
The chicken manure fermentation system, which incorporates pretreatment, fermentation, solid-liquid separation, and denitrification, solves the problems of large equipment size, high water consumption, and high operating costs. It achieves equipment miniaturization, resource conservation, and improved processing efficiency.
Patent Information
- Application Number
- CN202422872442.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing technologies for chicken manure fermentation treatment equipment are large in size, costly, consume a lot of water resources, and have high difficulty in treating biogas slurry, resulting in high operating costs.
A pretreatment device is used to dilute chicken manure to form an easily fermentable mixed liquid. A fermentation device is used to promote decomposition. A solid-liquid separation device separates the biogas slurry and biogas residue. Denitrification is carried out in an aeration device. The biogas slurry is recycled to dilute the chicken manure through a return pipeline. Combined with stripping and denitrification processes, water consumption and equipment capacity are reduced.
It reduces equipment size and water consumption, lowers operating costs, improves heating efficiency, and reduces the difficulty of biogas slurry treatment.
Smart Images
Figure CN223458263U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chicken manure fermentation treatment technical field, especially a kind of chicken manure fermentation treatment system. BACKGROUND
[0002] At present, the livestock breeding mode in China gradually develops towards modern breeding mode of scale, intensification and specialization, however, large-scale breeding first needs to handle the manure of livestock. Otherwise, it will cause serious pollution to the environment on which human beings depend for survival, and induce diseases.
[0003] In the process of breeding chicken, chicken manure is usually fermented to produce biological fertilizer for planting and biogas for heating. However, chicken manure fermentation needs a long period, and the amount of biogas produced after chicken manure fermentation is also large. The facilities such as equipment and site capable of accommodating and treating so much chicken manure and biogas must also have a huge volume and scale, which is high in cost. Moreover, a large amount of water resources is needed in the process of chicken manure fermentation, and the produced sewage needs to be treated for environmental protection before being discharged, which greatly increases the operating cost of treating chicken manure. SUMMARY
[0004] The utility model aims at at least solving one of the technical problems existing in the related art. To this end, the utility model provides a chicken manure fermentation treatment system to achieve the purpose of greatly reducing the volume of equipment needed for chicken manure fermentation treatment, the occupied area and the consumption of water resources.
[0005] The utility model provides a chicken manure fermentation treatment system, which comprises:
[0006] A pretreatment device for diluting chicken manure to prepare a mixed liquid easy to ferment;
[0007] A fermentation device for providing environmental conditions for metabolism of microorganisms to promote decomposition of organic matter in the mixed liquid;
[0008] A solid-liquid separation device for separating the mixed liquid into biogas slurry and biogas residue;
[0009] A biogas slurry storage device for composting the biogas slurry;
[0010] The solid-liquid separation device and the biogas slurry storage device are provided with an aeration device for denitrification treatment of biogas slurry, and the aeration device is provided with a reflux pipeline connected with the pretreatment device for conveying the denitrification-treated biogas slurry back to the pretreatment device.
[0011] According to the chicken manure fermentation treatment system provided by the utility model, the aeration device comprises an aeration pipe network, which is communicated to the inside of the aeration device.
[0012] According to the chicken manure fermentation treatment system, the aeration device further comprises an aeration fan arranged at the inlet end of the aeration pipe network and used for improving the flow speed of the gas entering the aeration device.
[0013] According to the chicken manure fermentation treatment system, the aeration device adopts a stripping denitrification process to perform denitrification treatment on the biogas liquid in the aeration device.
[0014] According to the chicken manure fermentation treatment system, the aeration device continuously discharges gas outward during the denitrification treatment of the biogas liquid, reduces the ammonia nitrogen concentration of the gas phase in the aeration device, and continuously volatilizes the dissolved ammonia in the biogas liquid to the gas phase, so that the NH3-N in the biogas liquid is removed.
[0015] According to the chicken manure fermentation treatment system, the fermentation device is provided with a sealable chamber used for performing anaerobic fermentation treatment on the mixed liquid.
[0016] According to the chicken manure fermentation treatment system, the aeration device proportionally delivers the biogas liquid after denitrification treatment to the pretreatment device and the biogas liquid storage device.
[0017] According to the chicken manure fermentation treatment system, the system further comprises a booster pump arranged on a pipeline connecting the solid-liquid separation device and the aeration device and used for controlling the delivery of the biogas liquid.
[0018] The one or more technical solutions in the chicken manure fermentation treatment system can at least have one of the following technical effects: the reflux pipeline can deliver the biogas liquid back to the pretreatment device, the biogas liquid is cyclically used to dilute the chicken manure, the use amount of clean water is greatly reduced, the capacity of the biogas liquid storage device is also reduced, the treatment difficulty of the biogas liquid and the operation cost of treating the chicken manure are greatly reduced. Meanwhile, the waste heat of the reflux biogas liquid can improve the heating efficiency of the system and reduce resource waste.
[0019] In addition to the technical problems solved by the chicken manure fermentation treatment system, the technical features of the technical solutions and the advantages brought by the technical features, other technical features of the chicken manure fermentation treatment system and the advantages brought by the technical features will be further described with reference to the drawings or understood through the practice of the chicken manure fermentation treatment system. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 The schematic diagram of the chicken manure fermentation treatment system provided by the embodiments of the present application.
[0022] Reference signs:
[0023] 1, pretreatment device; 2, fermentation device; 3, solid-liquid separation device; 4, aeration device; 5, biogas slurry storage device; 6, aeration pipe network; 7, aeration fan; 8, feed pump; 9, discharge pump; 10, lifting pump. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the present application will be described clearly below in combination with the drawings in the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0025] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0027] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature can be "under", "below" and "underneath" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0028] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0029] At present, the livestock breeding mode in China is gradually developing towards the modern breeding mode of scale, intensification and specialization. However, large-scale breeding first needs to handle the chicken manure of livestock and poultry. Otherwise, it will cause serious pollution to the environment on which human beings depend, and induce diseases.
[0030] In the process of breeding chickens, the chicken manure is usually fermented to produce biological fertilizer for planting and biogas for heating. However, the fermentation of chicken manure requires a long period, and the amount of biogas produced after the fermentation of chicken manure is also large. The facilities such as equipment and site capable of accommodating and treating so much chicken manure and biogas also must have a huge volume and scale, and the cost is high. Moreover, a large amount of water resources are needed in the process of chicken manure fermentation, and the produced sewage needs to be treated for environmental protection before being discharged, which greatly increases the operating cost of treating chicken manure.
[0031] To solve the above problems, in the embodiments of the present application, a chicken manure fermentation treatment system is introduced.
[0032] As shown in Figure 1 The chicken manure fermentation treatment system comprises a pretreatment device 1, a fermentation device 2, a solid-liquid separation device 3 and a biogas slurry storage device 5 which are sequentially connected through pipelines.
[0033] Specifically, the pretreatment device 1 is used to dilute chicken manure to form a mixed liquid which is easy to ferment. The fermentation device 2 can provide an environment for microorganisms to metabolize, so as to promote the decomposition of organic matter in the mixed liquid. The solid-liquid separation device 3 is used to separate the mixed liquid into biogas slurry and biogas residue. The biogas slurry storage device 5 is used to compost the biogas slurry.
[0034] In particular, the solid-liquid separation device 3 and the biogas slurry storage device 5 are provided with an aeration device 4 for denitrification treatment of the biogas slurry. The aeration device 4 is provided with a reflux pipeline connected to the pretreatment device 1, and the biogas slurry after denitrification treatment is transported back to the pretreatment device 1.
[0035] In addition, a conveying pump is arranged on the pipeline connecting two different devices respectively, so as to drive the mixed liquid or the biogas slurry to transfer between adjacent devices. For example, the conveying pump includes a feeding pump 8 arranged between the pretreatment device 1 and the fermentation device 2, a discharging pump 9 arranged between the fermentation device 2 and the solid-liquid separation device 3, and a lifting pump 10 arranged between the solid-liquid separation device 3 and the aeration device 4.
[0036] The feeding pump 8 can transport the mixed liquid of the preliminarily diluted manure and water to the fermentation tank. The feeding end of the discharging pump 9 is connected to the anaerobic fermentation device 2, and the discharging end of the discharging pump 9 is connected to the solid-liquid separation device 3, so as to transport the mixed liquid after fermentation to the solid-liquid separation device 3. The lifting pump 10 transports the biogas slurry separated from the mixed liquid by the solid-liquid separation device 3 to the aeration device 4.
[0037] In the embodiment, the reflux pipeline can transport the biogas slurry back to the pretreatment device 1, so as to recycle the biogas slurry to dilute the chicken manure, greatly reduce the use amount of clean water, and also reduce the capacity of the biogas slurry storage device 5, thereby greatly reducing the treatment difficulty of the biogas slurry and the operation cost of the chicken manure treatment. Meanwhile, the residual heat of the reflux biogas slurry can also improve the heating efficiency of the system and reduce resource waste.
[0038] On the basis of the above embodiment, another embodiment of the utility model discloses a chicken manure fermentation treatment system capable of implementing stripping denitrification process.
[0039] The mixed liquid formed by the chicken manure and water is changed into solid biogas residue and liquid biogas slurry after fermentation. The biogas residue can be prepared into organic fertilizer. The biogas slurry contains a large amount of ammonia nitrogen (NH3-N). The existence form of ammonia nitrogen in water mainly includes ammonium ion (NH4⁺) and free ammonia (NH3). There is a dynamic balance between the two forms, and the balance is affected by pH value.
[0040] Under acidic conditions (pH less than 7), ammonia mainly exists in the form of ammonium ion; while under alkaline conditions (pH greater than 7), ammonia mainly exists in the form of free ammonia. Free ammonia (NH3) is volatile and can be transferred to the air through the gas-liquid interface, while ammonium ion (NH4⁺) is not volatile.
[0041] Further, the solubility of ammonia nitrogen is also affected by temperature: the solubility of ammonia nitrogen in water decreases with the increase of temperature, making it easier to escape from water to air. The temperature of wastewater is usually kept above 25°C to promote the volatilization of ammonia nitrogen.
[0042] Further, the chicken manure fermentation treatment system further comprises a lifting pump 10 arranged on a pipeline connecting the solid-liquid separation device 3 and the aeration device 4, for controlling the delivery of biogas slurry separated by the solid-liquid separation device 3 to the aeration device 4.
[0043] The working principle of the stripping denitrification process is as follows: by introducing air (or oxygen) into the biogas slurry, the free ammonia in the biogas slurry is carried away by the gas flow. The introduction of air increases the contact area of the gas-liquid interface, promoting the separation of ammonia nitrogen from the biogas slurry. At the same time, during the aeration process, air containing ammonia gas is continuously discharged, which can continuously reduce the ammonia gas concentration above the liquid surface in the aeration device 4, thereby breaking the original balance and causing more ammonia nitrogen to escape from the biogas slurry.
[0044] Specifically, the aeration device 4 is provided with an aeration pipe network 6 for blowing air into the biogas slurry to promote the volatilization of ammonia nitrogen. The aeration pipe network 6 is connected to the inside of the aeration device 4. When the aeration device 4 contains biogas slurry, the gas outlet end of the aeration pipe network 6 is always below the liquid surface of the biogas slurry, increasing the gas-liquid contact area and improving the aeration intensity.
[0045] Further, the aeration device 4 further comprises an aeration fan 7 arranged at the inlet end of the aeration pipe network 6, for increasing the flow speed of the gas entering the aeration device 4.
[0046] On the basis of the above embodiment, another embodiment of the present application introduces a chicken manure fermentation treatment system.
[0047] The aeration device 4 continuously discharges gas during the denitrification treatment of the biogas slurry, reducing the ammonia nitrogen concentration in the gas phase in the aeration device 4, and the dissolved ammonia nitrogen in the biogas slurry continuously volatilizes into the gas phase, so that the NH3-N in the biogas slurry is removed.
[0048] On the basis of the above embodiment, another embodiment of the present application introduces a chicken manure fermentation treatment system.
[0049] The fermentation device 2 is provided with a closable and sealed chamber for anaerobic fermentation treatment of the mixed liquid.
[0050] Further, the aeration device 4 proportionally delivers the denitrified biogas slurry to the pretreatment device 1 and the biogas slurry storage device 5 respectively. After the stripping denitrification treatment, the ammonia nitrogen content in the biogas slurry is extremely low, which can not only replace the clean water to mix with the fresh chicken manure in the pretreatment device 1, but also can be treated into liquid fertilizer in the biogas slurry storage device 5.
[0051] Therefore, the chicken manure is diluted by the recycled biogas slurry, the use amount of clean water is greatly reduced, the capacity volume of the biogas slurry storage device 5 is reduced, and the treatment difficulty of the biogas slurry and the operation cost of the chicken manure treatment are greatly reduced. Meanwhile, the waste heat of the backflow biogas slurry can also improve the heating efficiency of the system and reduce the resource waste.
[0052] During the stripping process, fresh air is continuously sent into the aeration device 4 through the aeration pipe network 6 and the aeration fan 7 at one end of the aeration device 4, and mixed gas containing ammonia nitrogen is continuously discharged out of the aeration device 4 at the other end of the aeration device 4, so that the actual concentration of ammonia nitrogen on the surface of the biogas slurry is always less than the equilibrium concentration under the same condition, which promotes the dissolved free ammonia (NH3) in the biogas slurry to continuously separate from the biogas slurry, dissolve into the air and be discharged out of the aeration device 4 with the air.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
[0054] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A chicken manure fermentation treatment system, characterized by, The application relates to a chicken manure treatment system, which comprises the following parts: a pretreatment device (1) for diluting chicken manure to prepare a mixed liquid which is easy to ferment; a fermentation device (2) for providing environmental conditions for metabolism of microorganisms to promote decomposition of organic matters in the mixed liquid; a solid-liquid separation device (3) for separating the mixed liquid into biogas slurry and biogas residue; a biogas slurry storage device (5) for composting the biogas slurry; wherein an aeration device (4) for denitrification treatment of the biogas slurry is arranged between the solid-liquid separation device (3) and the biogas slurry storage device (5), and the aeration device (4) is provided with a backflow pipeline connected with the pretreatment device (1) and used for conveying the biogas slurry after denitrification treatment back to the pretreatment device (1).
2. The chicken manure fermentation treatment system according to claim 1, characterized by, The aeration device (4) comprises an aeration pipe network (6) which is communicated to the inside of the aeration device (4).
3. The chicken manure fermentation treatment system according to claim 2, characterized in that, The aeration device (4) further comprises an aeration fan (7) arranged at an inlet end of the aeration pipe network (6) and used for increasing the flow speed of gas entering the aeration device (4).
4. The chicken manure fermentation treatment system according to any one of claims 1 to 3, characterized by, The aeration device (4) adopts a stripping denitrification process to perform denitrification treatment on the biogas slurry in the aeration device (4).
5. The chicken manure fermentation treatment system according to claim 4, characterized in that, The aeration device (4) continuously discharges gas outside during the denitrification treatment of the biogas slurry, reduces the ammonia nitrogen concentration of the gas phase in the aeration device (4), and continuously volatilizes the dissolved ammonia in the biogas slurry to the gas phase, so that NH3-N in the biogas slurry is removed.
6. The chicken manure fermentation treatment system according to any one of claims 1-3, wherein The fermentation device (2) is provided with a sealable cavity which is used for anaerobic fermentation treatment of the mixed liquid.
7. The chicken manure fermentation treatment system according to any one of claims 1-3, wherein The aeration device (4) proportionally conveys the biogas slurry after denitrification treatment to the pretreatment device (1) and the biogas slurry storage device (5) respectively.
8. The chicken manure fermentation treatment system according to any one of claims 1-3, wherein, The application further comprises a booster pump (10) arranged on a pipeline connecting the solid-liquid separation device (3) and the aeration device (4) and used for controlling the conveying of the biogas slurry.