Garbage treatment system

Abstract

The utility model provides a garbage treatment system, and relates to the technical field of garbage treatment equipment. The garbage treatment system comprises a fermentation bin, the fermentation bin comprises a bin body, a heat preservation layer and a heating layer, the bin body is provided with a fermentation cavity, the outer wall of the fermentation bin is coated with the heating layer, and the outer wall of the heating layer is coated with the heat preservation layer; wherein the heating layer is provided with a heating cavity and a heat production part, the heating cavity is filled with a heat conduction liquid medium, and the heat production part is located in the heating cavity and used for providing heat. According to the invention, the biogas yield of anaerobic fermentation of the kitchen waste can be increased, and the problem of insufficient fermentation of the kitchen waste is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste treatment equipment, in particular to a waste treatment system. BACKGROUND

[0002] Kitchen waste has the characteristics of rich nutrition and easy biodegradation, and its main components are carbohydrates, proteins, fats, salts, etc. Generally, anaerobic fermentation technology is used to treat kitchen waste, which can not only solve the problem of environmental pollution, but also produce biogas to prepare biofuel gas, thereby realizing the resource utilization of kitchen waste. However, the traditional anaerobic digestion equipment and process have the problems of low gas production and insufficient fermentation. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to overcome the deficiencies in the prior art, provide a waste treatment system, which can improve the biogas production of kitchen waste anaerobic fermentation and solve the problem of insufficient kitchen waste fermentation.

[0004] The present application provides the following technical solutions:

[0005] The present application provides a waste treatment system, which comprises:

[0006] The fermentation bin comprises a bin body, a heat preservation layer and a heating layer, the bin body has a fermentation cavity, the heating layer is wrapped on the outer wall of the fermentation bin, and the heat preservation layer is wrapped on the outer wall of the heating layer; wherein the heating layer has a heating cavity and a heat generating part, the heating cavity is filled with a heat conducting liquid medium, and the heat generating part is located in the heating cavity, and the heat generating part is used to provide heat.

[0007] In some embodiments, the fermentation bin comprises:

[0008] The stirring part is connected with the bin body, and is used to stir the fermentation material in the fermentation bin.

[0009] In some embodiments, the fermentation bin further comprises:

[0010] The at least two separators are arranged in the bin body, and are arranged at intervals in the direction from the feeding port to the discharging port of the bin body, so that the fermentation cavity is divided into at least three sub-cavities, and the feeding port and the discharging port are arranged at intervals in the horizontal direction; wherein the separator has a flow port, and the flow port is in communication with the sub-cavities on both sides of the corresponding separator;

[0011] The valve is arranged in the flow port, and the valve can at least switch the on-off state of the corresponding flow port.

[0012] In some embodiments, the number of sub-chambers is three, the three sub-chambers are a first sub-chamber, a second sub-chamber and a third sub-chamber in the direction from the feed inlet to the discharge outlet, and the heights of the flow passages of the at least two partitions gradually decrease; the bottom of the second sub-chamber is inclined, and the bottom of the second sub-chamber is closer to one end of the first sub-chamber than to one end of the third sub-chamber.

[0013] In some embodiments, the stirring member comprises a stirring paddle and a driving part, the driving part is connected with the stirring paddle, the driving part is used to drive the stirring paddle to rotate, and the stirring paddle is located in the first sub-chamber and / or the second sub-chamber.

[0014] In some embodiments, the garbage treatment system further comprises:

[0015] A biogas collecting member is used to collect and store biogas, and the biogas collecting member has a gas inlet, which is in communication with all the sub-chambers.

[0016] In some embodiments, the biogas collecting member comprises a water-vapor separator, a gas purifier, a compressor and a gas storage tank, and the gas storage tank, the compressor, the gas purifier, the water-vapor separator and the fermentation chamber are sequentially in communication.

[0017] In some embodiments, the garbage treatment system further comprises:

[0018] A screw conveyor, the inlet of the screw conveyor is in communication with the bottom of the third sub-chamber, and the inlet of the screw conveyor is lower than the outlet of the screw conveyor.

[0019] A first screw extrusion solid-liquid separator, the inlet of the first screw extrusion solid-liquid separator is in communication with the outlet of the screw conveyor.

[0020] In some embodiments, the garbage treatment system further comprises a biogas slurry buffer bin, the biogas slurry buffer bin is located below the first screw extrusion solid-liquid separator, the solid outlet of the first screw extrusion solid-liquid separator is in communication with the top of the biogas slurry buffer bin, and the bottom of the first sub-chamber is in communication with the bottom of the biogas slurry buffer bin.

[0021] In some embodiments, the garbage treatment system further comprises a pulverizer and a second screw extrusion solid-liquid separator, the pulverizing outlet of the pulverizer is in communication with the inlet of the second screw extrusion solid-liquid separator, and the solid outlet of the second screw extrusion solid-liquid separator is in communication with the feed inlet.

[0022] Embodiments of the present application have the following advantages:

[0023] The garbage treatment system provided by the application can promote the activity of anaerobic microorganisms and accelerate the decomposition rate of organic matter through the constant temperature environment provided by the heating layer, thereby increasing the amount of biogas generated. Moreover, the system ensures the temperature stability in the fermentation process through the design of the heating layer and the heat preservation layer, which helps to improve the fermentation efficiency and make the kitchen garbage more thoroughly decomposed. Furthermore, the use of the heat-conducting liquid medium as the heat transfer medium can not only uniformly transfer heat to the materials in the fermentation bin, but also is more energy-saving compared with the direct heating method. In addition, the addition of the heat preservation layer reduces heat loss and further improves energy efficiency.

[0024] Obviously, the system has a compact structure and is easy to operate and maintain. By adjusting the power of the heat generating part in the heating layer, the temperature inside the fermentation bin can be flexibly controlled to adapt to different seasons or different types of kitchen garbage treatment requirements.

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken as an example, and the following detailed description is made in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 A structure schematic diagram of a garbage treatment system provided by an embodiment of the application is shown;

[0028] Figure 2 A structure schematic diagram of a fermentation bin of a garbage treatment system provided by an embodiment of the application is shown.

[0029] Main element symbol explanation:

[0030] 100 - pulverizer; 200 - second spiral extrusion solid-liquid separator; 300 - fermentation bin; 310 - bin body; 311 - first level sub-cavity; 312 - second level sub-cavity; 313 - third level sub-cavity; 320 - heating layer; 321 - heating cavity; 322 - heat generating part; 330 - heat preservation layer; 400 - stirring part; 410 - driving part; 420 - stirring paddle; 500 - partition; 600 - screw conveyor; 700 - first spiral extrusion solid-liquid separator; 800 - biogas collecting part; 810 - gas purifier; 820 - compressor; 830 - gas storage tank; 900 - biogas residue bin; 1000 - biogas liquid buffer bin; 1100 - waste liquid bin. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein like or similar constituent elements or features may be denoted by like reference characters, and wherein the embodiments described are only examples of the present application and are not intended to limit the present application.

[0032] It is to be noted that when an element or layer is referred to as being "on" another element or substrate, it can be directly on the other element or substrate, or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Like numbers refer to like elements throughout. The term "vertical," "horizontal," "left," "right," and the like are used for illustrative purposes only and are not intended to limit the scope of the present application.

[0033] In the present application, unless otherwise explicitly defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the template herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0036] In the related art, kitchen waste refers to the surplus and processing waste generated in food processing, transportation, and consumption activities in food service activities. With the development of China's economy and the improvement of people's living quality, the output of kitchen waste has been increasing, from 3.1 x 10°t in 2010 to 7.5 x 107t in 2019, with an average annual compound growth rate of 4.9%. However, the treatment of kitchen waste in China is seriously lagging behind, and the resource utilization rate is less than 15%. Traditional kitchen waste treatment methods, including landfill, composting, incineration, and mechanical crushing into sewers, etc., make kitchen waste a burden on the urban environment, the most direct manifestation being that collection and transportation are prone to corruption, the stench near the landfill site, leakage of leachate causing secondary pollution, and landfill collapse caused by waste degradation, etc. Therefore, the resource utilization and harmless treatment of kitchen waste have become a problem of common concern.

[0037] Kitchen waste is mainly composed of carbohydrates, proteins, fats, salts, etc., and has the characteristics of rich nutrition and easy biodegradation. Using anaerobic fermentation technology to treat kitchen waste can not only solve the problem of environmental pollution, but also produce biogas, thereby realizing the resource utilization of kitchen waste. However, traditional anaerobic digestion equipment and process have the problems of low gas production and insufficient fermentation.

[0038] As shown in Figure 1 and Figure 2 To solve the above technical problems, the embodiments of the present application provide a waste treatment system, which comprises a fermentation bin 300, the fermentation bin 300 comprising a bin body 310, a heat preservation layer 330 and a heating layer 320, the bin body 310 having a fermentation cavity, the heat preservation layer 330 and the heating layer 320, the heating layer 320 being coated on the outer wall of the fermentation bin 300, and the heat preservation layer 330 being coated on the outer wall of the heating layer 320; wherein the heating layer 320 has a heating cavity 321 and a heat generating part 322, the heating cavity 321 being filled with a heat conducting liquid medium, and the heat generating part 322 being located in the heating cavity 321, and the heat generating part 322 being used for providing heat.

[0039] In these embodiments, the fermentation bin 300 is used to contain kitchen waste and carry out anaerobic fermentation. The heating layer 320 is coated on the outer wall of the fermentation bin 300 to provide and maintain the temperature required for fermentation. The heat preservation layer 330 is coated on the outer wall of the heating layer 320 to reduce heat loss and keep the temperature in the fermentation bin 300 stable.

[0040] The heating layer 320 has the following structure:

[0041] The heating cavity 321 is filled with a heat conducting liquid medium to uniformly transfer heat. Exemplarily, the heat conducting liquid medium is heat conducting oil. Of course, in other embodiments, the heat conducting liquid medium can also be water, antifreeze, etc.

[0042] The heat-generating part 322 is located in the heating cavity 321 and is configured to provide heat. The heat-generating part 322 can be an electric heating element, a hot water circulation system, or other forms of heat source. In an example, the heat-generating part 322 is an electric heating tube, and a plurality of electric heating tubes are uniformly distributed from one end of the fermentation bin 300 to the other end. The electric heating tubes heat the heat-conducting liquid medium and uniformly transmit heat to the kitchen waste.

[0043] In addition, the heat-insulating layer 330 has a heat-insulating cavity, which is set in a vacuum state to maintain the stability of the temperature of the biological fermentation bin 300, thereby facilitating the fermentation of the kitchen waste.

[0044] In an example, the outer side of the fermentation bin 300 is sequentially provided with a first shell and a second shell. The first shell and the fermentation bin 300 form the heating cavity 321, and the second shell and the first shell form the heat-insulating cavity.

[0045] Obviously, the heat-conducting liquid medium in the heating cavity 321 is heated by the heat provided by the heat-generating part 322, thereby uniformly transmitting heat to the outer wall of the fermentation bin 300. The heat-insulating layer 330 reduces heat loss and ensures that the temperature in the fermentation bin 300 is maintained within a desired range. The kitchen waste is subjected to anaerobic fermentation in the fermentation bin 300. Due to proper temperature control, microbial activity is enhanced, and the fermentation process is more complete. Moreover, due to the optimized fermentation conditions, microbial metabolism is more active, and the biogas production is significantly improved.

[0046] Therefore, by optimizing the temperature control of the fermentation bin 300, the waste treatment system provided by the present application can significantly improve the biogas production of the anaerobic fermentation of the kitchen waste and improve the problem of incomplete fermentation. This design not only improves the energy efficiency and biogas production of the system, but also simplifies the operation process, thereby providing an effective solution for the resource utilization of the kitchen waste.

[0047] As shown in FIG. 4, in some embodiments, the fermentation bin 300 comprises a stirring part 400, which is connected to the bin body 310 and is configured to stir the fermentation material in the fermentation bin 300. Figure 1 In these embodiments, the fermentation bin 300 is designed with the stirring part 400, which is of great significance to improve the efficiency of anaerobic fermentation and the biogas production. The bin body 310 is the main component of the fermentation bin 300 and forms a fermentation cavity inside for accommodating organic waste such as kitchen waste. The bin body 310 needs to have good sealing property and corrosion resistance to prevent harmful gas leakage and internal corrosion.

[0048]

[0049] ​The agitator 400 is connected to the fermentation chamber 310 and is responsible for agitating the materials within the fermentation chamber 300. The design of the agitator 400 is crucial for ensuring uniform mixing of materials, promoting microbial activity, and improving fermentation efficiency.

[0050] Clearly, the agitator 400, through continuous stirring, ensures that newly added kitchen waste is thoroughly mixed with the existing fermentation material, preventing localized accumulation and ensuring effective treatment of all materials. Furthermore, stirring breaks up air bubbles, increasing the contact area between microorganisms and the substrate, improving the transfer efficiency of gases such as oxygen or methane, and thus increasing gas production. Uniform stirring also helps distribute heat throughout the fermentation material, preventing localized overheating or undercooling and maintaining temperature consistency throughout the fermentation process. Moreover, stirring prevents heavier solid particles from settling to the bottom and forming a hard crust, which would affect mass and heat transfer, and also avoids "dead zones" at the bottom of the fermentation chamber 300 due to lack of stirring.

[0051] For example, different mixing methods can be selected according to actual needs, such as mechanical mixing (using propeller-type, blade-type, etc. agitators), pneumatic mixing (using compressed air to generate bubbles to drive the material movement) or hydraulic mixing (using high-pressure liquid to drive the mixing device).

[0052] It is important to note that a suitable stirring speed is crucial for maintaining material homogeneity and controlling energy consumption. Stirring too quickly consumes excessive energy, while stirring too slowly fails to effectively promote mixing. Generally, the optimal stirring speed can be determined experimentally. Furthermore, to save energy and reduce interference with the fermentation process, a timed stirring mode can be set, which involves starting stirring at regular intervals instead of continuous stirring.

[0053] Clearly, through the above design, the fermentation chamber 300 and its mixing component 400 can further improve the effect of anaerobic fermentation of kitchen waste, which not only helps to increase biogas production, but also ensures that the fermentation process is more stable and efficient.

[0054] like Figure 1 As shown, in some embodiments, the fermentation chamber 300 further includes at least two partitions 500 and a valve. The at least two partitions 500 are disposed within the chamber body 310 and are spaced apart in the direction from the inlet to the outlet of the chamber body 310, such that the fermentation chamber is divided into at least three sub-chambers, and the inlet and outlet are spaced apart in the horizontal direction. The partitions 500 have flow ports that communicate with the sub-chambers on both sides of the corresponding partitions 500. The valve is disposed at the flow port and is capable of switching the on / off state of the corresponding flow port.

[0055] In these embodiments, the process of anaerobic fermentation of kitchen waste is further optimized by introducing multiple partitions 500 and valves. This design not only improves fermentation efficiency but also better controls various parameters during the fermentation process.

[0056] At least two partitions 500 are arranged in the fermentation chamber, which are arranged along the length direction of the fermentation bin 300 (from the inlet to the outlet), and divide the fermentation chamber into at least three sub-chambers. Each sub-chamber can be independently controlled to achieve multi-stage fermentation. The inlet and outlet are arranged in a horizontal direction, ensuring that the material enters from one end, is processed through multiple sub-chambers, and is finally discharged from the other end. Each partition 500 is provided with a flow port, which connects adjacent sub-chambers and allows material to flow between different sub-chambers.

[0057] A valve is installed at each flow port to control the flow of material between different sub-chambers. The valve can switch the on-off state of the flow port, thereby achieving precise control of the fermentation process.

[0058] Obviously, by dividing the fermentation chamber into multiple sub-chambers, multi-stage fermentation can be achieved. Each sub-chamber can be set to different fermentation conditions (such as time, pH value, etc.), thereby better adapting to the needs of different fermentation stages and improving overall fermentation efficiency and gas production. Moreover, the setting of the valve allows the operator to flexibly control the flow of material between the sub-chambers, avoiding the problem of insufficient or excessive fermentation in local areas during single-chamber fermentation. In addition, multi-stage fermentation and precise control help ensure that the material stays in each sub-chamber for a sufficient amount of time, thereby improving the degradation rate of organic matter and the production of biogas.

[0059] It should be noted that by sequentially stopping the kitchen waste after crushing and pressing treatment in multiple sub-chambers for a set time, both the full fermentation and degradation of kitchen waste and the separation of raw and cooked fertilizer can be achieved. The kitchen waste after fermentation is formed into full fertilizer and stored in the last sub-chamber, effectively solving the problem of mixing raw and cooked fertilizer when discharging from the bin.

[0060] For example, the partition 500 is arranged as a partition, and the partition 500 can be made of corrosion-resistant and easy-to-clean materials.

[0061] For example, the size and shape of the flow port can be adjusted according to the characteristics and flow requirements of the material. For example, the flow port can be arranged in a circular, square, triangular, or other shape.

[0062] For example, the valve can be selected from different types such as electric valve, pneumatic valve, or manual valve, according to the degree of automation and cost budget.

[0063] Optionally, an automatic control system is provided to monitor the temperature, pH value and other parameters of each sub-cavity through sensors, and automatically adjust the state of the valve according to the preset conditions to realize intelligent management. Through this design, the fermentation bin 300 not only improves the efficiency and quality of anaerobic fermentation of kitchen waste, but also better meets the requirements of environmental protection and resource utilization, providing strong support for sustainable development.

[0064] As shown in Figure 1 In some embodiments, the number of sub-cavities is three, and in the direction from the feeding port to the discharging port, the three sub-cavities are a first sub-cavity 311, a second sub-cavity 312 and a third sub-cavity 313, and the height of the flow passage of at least two partition pieces 500 gradually decreases; the bottom of the second sub-cavity 312 is inclinedly arranged, and the bottom of the second sub-cavity 312 near the end of the first sub-cavity 311 is higher than the end of the third sub-cavity 313.

[0065] In these embodiments, by dividing the fermentation cavity into three sub-cavities and designing each sub-cavity specifically, the process of anaerobic fermentation of kitchen waste is further optimized. This design not only improves the fermentation efficiency, but also better controls the fermentation conditions, ensuring the stability and efficiency of the fermentation process. That is, the fermentation cavity is divided into three sub-cavities: a first sub-cavity 311, a second sub-cavity 312 and a third sub-cavity 313. Among them, the feeding port and the discharging port are arranged at intervals in the horizontal direction, ensuring that the material enters from the feeding port, passes through the first sub-cavity 311, the second sub-cavity 312 and the third sub-cavity 313 in turn, and finally discharges from the discharging port.

[0066] And the height of the flow passage gradually decreases to ensure the natural flow of the material under the action of gravity. In addition, the minimum residual amount of each sub-cavity can be adjusted, which is beneficial to subsequent fermentation. The bottom of the second sub-cavity 312 is inclinedly arranged, and the end near the first sub-cavity 311 is higher than the end near the third sub-cavity 313. This design helps the material to flow smoothly from the first sub-cavity 311 into the second sub-cavity 312 and be evenly distributed in the second sub-cavity 312, and finally flow into the third sub-cavity 313.

[0067] Among them, the first sub-cavity 311 is mainly used for preliminary fermentation, at this time the freshness of the material is higher and the microbial activity is stronger. After the material is preliminarily fermented, it enters the second sub-cavity 312 for further fermentation, at this time the fermentation conditions (such as time, pH value, etc.) can be adjusted. In the final stage of fermentation, the material completes deep fermentation in this stage to generate more biogas, and temporarily stores the material.

[0068] As shown in Figure 1As shown, in some embodiments, the stirring element 400 includes a stirring paddle 420 and a driving unit 410. The driving unit 410 is connected to the stirring paddle 420, and the driving unit 410 is used to drive the stirring paddle 420 to rotate. The stirring paddle 420 is located in the primary sub-cavity 311 and / or the secondary sub-cavity 312.

[0069] In these embodiments, the agitator 400 includes an agitator 420 and a drive unit 410. This design further optimizes the anaerobic fermentation process of food waste, especially in the application of the primary sub-chamber 311 and the secondary sub-chamber 312.

[0070] The agitator 420 is installed inside the fermentation chamber 300 to agitate the fermentation materials. The agitator 420 can be designed in various shapes, such as propeller type, blade type or rake type, to adapt to different material characteristics and agitation requirements.

[0071] The drive unit 410 is connected to the agitator 420 and provides power to drive the agitator 420 to rotate. The drive unit 410 can be an electric motor, a hydraulic motor, or other types of drive devices, depending on the system's power requirements and cost budget.

[0072] Installing a stirring paddle 420 in the primary chamber 311 ensures that newly added kitchen waste is thoroughly mixed with existing fermentation materials, preventing localized accumulation and improving the efficiency of initial fermentation. Installing a stirring paddle 420 in the secondary chamber 312 helps to further homogenize the mixture, promote microbial activity, and improve the fermentation efficiency in the intermediate stage.

[0073] like Figure 1 As shown, in some embodiments, the waste treatment system further includes a biogas collection unit 800 for collecting and storing biogas, the biogas collection unit 800 having an air inlet that is connected to all of the sub-cavities.

[0074] In these embodiments, a biogas collection unit 800 is added, which is a very important component capable of effectively collecting and storing biogas produced during anaerobic fermentation. This design not only improves the overall efficiency of the system but also facilitates subsequent biogas utilization.

[0075] The biogas collection unit 800 is a device specifically designed for collecting and storing biogas, typically a sealed container or gas storage tank 830. The biogas collection unit 800 is equipped with an air inlet for connecting to the various sub-cavities within the fermentation chamber 300 to collect the generated biogas. The connection between the air inlet and the sub-cavities is achieved through pipes connecting the air inlet of the biogas collection unit 800 to all sub-cavities within the fermentation chamber 300. This allows biogas to be transported to the biogas collection unit 800 for centralized collection and storage, regardless of where it is generated.

[0076] likeFigure 1 As shown, in some embodiments, the biogas collection unit 800 includes a water vapor separator, a gas purifier 810, a compressor 820, and a gas storage tank 830, which are sequentially connected.

[0077] In these embodiments, not only can biogas be collected and stored efficiently, but it can also be purified and compressed to improve its quality and utilization efficiency.

[0078] Water vapor separator: Used to remove moisture from biogas and prevent water vapor from entering downstream equipment and affecting system operation. Choose a high-efficiency water vapor separator, such as a cyclone separator or condenser separator, to ensure that moisture in the biogas is completely removed.

[0079] Gas purifier 810: Used to remove impurities (such as hydrogen sulfide, carbon dioxide, etc.) from biogas, improving its purity and quality. Appropriate purification methods, such as chemical absorption and physical adsorption, are selected based on the type and content of impurities in the biogas.

[0080] Compressor 820: Used to compress the purified biogas to the high pressure required for storage and transportation. Select a compressor 820 suitable for high-pressure compression, such as a reciprocating compressor 820 or a screw compressor 820, to ensure compression efficiency and reliability.

[0081] Gas Storage Tank 830: Used to store compressed biogas, providing a stable gas source for subsequent use. Choose pressure-resistant and corrosion-resistant materials for the Gas Storage Tank 830, such as stainless steel or carbon steel with an anti-corrosion coating.

[0082] In this system, biogas, after being generated in the fermentation chamber, passes sequentially through a water-vapor separator, a gas purifier 810, and a compressor 820 before being stored in a gas storage tank 830. This design allows the waste treatment system to not only efficiently collect and store biogas but also purify and compress it, improving biogas quality and utilization efficiency, thus providing strong support for achieving sustainable development.

[0083] like Figure 1 As shown, in some embodiments, the waste treatment system further includes a screw conveyor 600 and a first screw extrusion solid-liquid separator 700. The inlet of the screw conveyor 600 is connected to the bottom of the third-stage sub-cavity 313, and the inlet of the screw conveyor 600 is lower than the outlet of the screw conveyor 600. The inlet of the first screw extrusion solid-liquid separator 700 is connected to the outlet of the screw conveyor 600.

[0084] In these embodiments, a screw conveyor 600 and a first screw extrusion solid-liquid separator 700 are added. This design further optimizes the food waste treatment process and automates solid-liquid separation and material conveying.

[0085] The inlet of the screw conveyor 600 is communicated with the bottom of the third sub-cavity 313 for receiving the material after the third fermentation. The outlet of the screw conveyor 600 is communicated with the inlet of the first screw extrusion solid-liquid separator 700 for conveying the material to the solid-liquid separator.

[0086] That is, the material after the third fermentation flows out from the bottom of the third sub-cavity 313, is conveyed to the first screw extrusion solid-liquid separator 700 through the screw conveyor 600, and is subjected to solid-liquid separation. The screw conveyor 600 can continuously and stably convey the fermented material from the third sub-cavity 313 to the solid-liquid separator, avoiding the inconvenience of manual carrying and transfer, and improving the work efficiency. The first screw extrusion solid-liquid separator 700 separates the solid and liquid parts in the material by extrusion, and the solid part can be used as fertilizer or further processed, and the liquid part can be recycled or further processed. The solid-liquid separation can reduce the pollution of the fermented material to the environment, and especially the treatment of the liquid part can reduce the sewage discharge, meeting the environmental protection requirements.

[0087] As shown in FIG. 1, Figure 1 In some embodiments, the garbage treatment system further comprises a biogas slurry buffer bin 1000, which is located below the first screw extrusion solid-liquid separator 700, the solid outlet of the first screw extrusion solid-liquid separator 700 is communicated with the top of the biogas slurry buffer bin 1000, and the bottom of the first sub-cavity 311 is communicated with the bottom of the biogas slurry buffer bin 1000.

[0088] In these embodiments, the biogas slurry buffer bin 1000 is added, which further optimizes the overall performance of the system and realizes the temporary storage and recycling of the biogas slurry after solid-liquid separation.

[0089] The biogas slurry buffer bin 1000 is located below the first screw extrusion solid-liquid separator 700 for temporarily storing the separated biogas slurry. The top of the biogas slurry buffer bin 1000 is communicated with the liquid outlet of the first screw extrusion solid-liquid separator 700 for receiving the separated biogas slurry. The bottom of the biogas slurry buffer bin 1000 is communicated with the bottom of the first sub-cavity 311 for recycling the temporarily stored biogas slurry to the first sub-cavity 311 for adjusting the fermentation conditions or supplementing water, realizing the recycling.

[0090] That is, recycling the biogas slurry to the first sub-cavity 311 can adjust the fermentation conditions such as pH value, temperature and humidity, which helps to maintain a suitable fermentation environment and improve the fermentation efficiency. The biogas slurry contains rich microorganisms and nutrients, which can promote the rapid fermentation of the newly added kitchen waste when recycled to the first sub-cavity 311. Through the recycling of the biogas slurry, the discharge of waste water can be reduced, the pollution to the environment can be reduced, and the environmental protection requirements can be met.

[0091] In addition, a biogas residue bin 900 is added. The solid biogas residue from the first screw extrusion solid-liquid separator 700 enters the biogas residue bin 900 from the solid outlet for storage. The biogas residue in the biogas residue bin 900 is emptied periodically.

[0092] like Figure 1 As shown, in some embodiments, the waste treatment system further includes a crusher 100 and a second spiral extrusion solid-liquid separator 200, with the crushing outlet of the crusher 100 connected to the inlet of the second spiral extrusion solid-liquid separator 200, and the solid outlet and feed inlet of the second spiral extrusion solid-liquid separator 200 connected.

[0093] In these embodiments, a crusher 100 and a second spiral extrusion solid-liquid separator 200 are added. This design further optimizes the overall performance of the system, realizes the pretreatment and solid-liquid separation of kitchen waste, and ensures that the material entering the fermentation chamber 300 is more uniform and suitable.

[0094] The crusher 100 is used to crush kitchen waste, reducing its particle size and improving the efficiency of subsequent processing. The crushing outlet is connected to the inlet of the second screw extrusion solid-liquid separator 200, conveying the crushed material into the solid-liquid separator.

[0095] The inlet of the second spiral extrusion solid-liquid separator 200 is connected to the crushing outlet of the crusher 100 to receive the crushed material. The solid outlet is connected to the feed inlet of the fermentation chamber 300 to transport the separated solid portion into the fermentation chamber 300. The liquid outlet is connected to the top of the biogas slurry buffer chamber 1000 to temporarily store or return the separated liquid portion to the primary sub-chamber 311.

[0096] In other words, the kitchen waste is first crushed by the crusher 100, and then separated into solid and liquid by the second spiral extrusion solid-liquid separator 200. The solid part enters the fermentation chamber 300, and the liquid part is temporarily stored or returned to the primary sub-chamber 311.

[0097] Clearly, crushing kitchen waste into smaller particles using the crusher 100 helps improve the efficiency of subsequent fermentation. Smaller particles are more easily degraded by microorganisms, increasing biogas production. Furthermore, the second screw extrusion solid-liquid separator 200 can separate the crushed material into solid and liquid components, ensuring that the material entering the fermentation chamber 300 is more uniform and suitable, preventing large pieces of material from affecting the fermentation effect. The more uniform solid portion after crushing and solid-liquid separation helps improve the mixing effect during fermentation, ensuring sufficient contact between microorganisms and the substrate.

[0098] Furthermore, solid-liquid separation can control the moisture content of the materials entering the fermentation chamber 300, preventing excessive moisture from affecting the fermentation process.

[0099] In addition, the liquid outlet of the second screw extrusion solid-liquid separator 200 is connected with the lower waste liquid bin 1100, which is used for storing oil-containing waste liquid and is regularly discharged and transported to a processing plant for making bio-diesel.

[0100] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not limiting, and thus other examples of the example embodiments can have different values.

[0101] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it need not be further defined and explained in subsequent views.

[0102] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be construed as limiting the scope of the present application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A waste disposal system, characterized by, The garbage treatment system comprises: The fermentation bin comprises a bin body, a heat preservation layer and a heating layer, the bin body has a fermentation cavity, the heating layer is wrapped on the outer wall of the fermentation bin, and the heat preservation layer is wrapped on the outer wall of the heating layer; wherein the heating layer has a heating cavity and a heat generation part, the heating cavity is filled with a heat-conducting liquid medium, and the heat generation part is located in the heating cavity, and the heat generation part is used for providing heat.

2. The waste disposal system of claim 1, wherein, The fermentation bin comprises: The stirring part is connected with the bin body, and is used for stirring the fermentation material in the fermentation bin.

3. The waste disposal system of claim 2, wherein, The fermentation bin further comprises: At least two separators are arranged in the bin body, and the at least two separators are arranged at intervals in the direction from the feeding port to the discharging port of the bin body, so that the fermentation cavity is divided into at least three sub-cavities, and the feeding port and the discharging port are arranged at intervals in the horizontal direction; wherein the separator has a flow port, and the flow port is in communication with the sub-cavities on both sides of the corresponding separator; A valve is arranged in the flow port, and the valve can at least switch the on-off state of the corresponding flow port.

4. The waste disposal system of claim 3, wherein, The number of the sub-cavities is three, in the direction from the feeding port to the discharging port, the three sub-cavities are respectively a first sub-cavity, a second sub-cavity and a third sub-cavity, and the height of the flow port of the at least two separators gradually decreases; the bottom of the second sub-cavity is arranged to be inclined, and the bottom of the second sub-cavity is closer to one end of the first sub-cavity and is higher than the other end of the third sub-cavity.

5. The waste disposal system of claim 4, wherein, The stirring part comprises a stirring paddle and a driving part, the driving part is connected with the stirring paddle, the driving part is used for driving the stirring paddle to rotate, and the stirring paddle is located in the first sub-cavity and / or the second sub-cavity.

6. The waste disposal system of claim 3, wherein, The garbage treatment system further comprises: A biogas collecting part is used for collecting and storing biogas, and the biogas collecting part has a gas inlet, and the gas inlet is in communication with all the sub-cavities.

7. The waste disposal system of claim 6, wherein, The biogas collecting part comprises a water vapor separator, a gas purifier, a compressor and a gas storage tank, and the gas storage tank, the compressor, the gas purifier, the water vapor separator and the fermentation cavity are sequentially arranged in communication.

8. The waste disposal system of claim 4, wherein, The garbage treatment system further comprises: A screw conveyor, the inlet of the screw conveyor is in communication with the bottom of the third sub-cavity, and the inlet of the screw conveyor is lower than the outlet of the screw conveyor; A first screw extrusion solid-liquid separator, the inlet of the first screw extrusion solid-liquid separator is in communication with the outlet of the screw conveyor.

9. The waste disposal system of claim 8, wherein, The garbage treatment system further comprises a biogas slurry buffer bin, the biogas slurry buffer bin is located below the first screw extrusion solid-liquid separator, the solid outlet of the first screw extrusion solid-liquid separator is in communication with the top of the biogas slurry buffer bin, and the bottom of the first sub-cavity is in communication with the bottom of the biogas slurry buffer bin.

10. The waste disposal system of any one of claims 1 to 9, wherein, The garbage treatment system further comprises a pulverizer and a second screw extrusion solid-liquid separator, a pulverizing outlet of the pulverizer and an inlet of the second screw extrusion solid-liquid separator are communicated, and a solid outlet of the second screw extrusion solid-liquid separator and a feeding port are communicated.

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