Biogas slurry and biogas residue multistage environment-friendly treatment device and method

Abstract

The invention discloses a biogas slurry and biogas residue multistage environment-friendly treatment device and method, and relates to the technical field of biogas slurry multistage treatment.The device comprises a shell, a conveying pump is arranged on one side of the shell, the input end of the conveying pump is connected with a first liquid inlet pipe, and the first liquid inlet pipe is located outside the shell; the output end of the conveying pump is connected with a second liquid inlet pipe, and the second liquid inlet pipe is located in the shell. A central shaft is horizontally arranged in the shell, and a plurality of processing parts are sequentially arranged on a middle pipe; the processing part comprises a bearing box body and a conversion part; wherein the bearing box body comprises an annular plate I, a side arc plate and an annular plate II; a plurality of middle pipes are arranged at the inner top of the shell; the conversion part is rotationally arranged in the bearing box body; the conversion part comprises a rotary drum, and a plurality of partition plates are uniformly arranged on the rotary drum in the circumferential direction; a Z-shaped pipe is connected between every two adjacent bearing box bodies; the technical effect of automatically replacing the multi-stage filtering filler while carrying out multi-stage treatment on the biogas slurry is realized.

Description

Technical Field

[0001] This invention relates to the field of multi-stage biogas slurry treatment technology, and in particular to a multi-stage environmentally friendly treatment device and method for biogas slurry and biogas residue. Background Technology

[0002] In the fields of biogas engineering and agricultural waste treatment, biogas slurry and biogas residue, as fermentation products, contain abundant nutrients, but also carry a large amount of suspended solids, organic pollutants, and pathogenic microorganisms. Direct discharge or utilization without effective treatment will not only cause environmental problems such as eutrophication of water bodies and soil pollution, but also lead to resource waste due to low treatment efficiency. Therefore, developing efficient and environmentally friendly biogas slurry and biogas residue treatment technologies has become a critical issue that the industry urgently needs to address.

[0003] In existing technologies, common biogas slurry and biogas residue treatment devices mostly employ single-stage filtration or static packing adsorption methods. For example, Chinese invention patent CN113603248B discloses a device for filtering biogas slurry using corn stalks and a biogas slurry concentration and separation process. The device includes a tank, with a motor fixedly embedded in the upper end. A speed limiter is connected to the lower end of the motor, and a drive shaft is fixedly connected to the lower end of the speed limiter. The drive shaft is driven to rotate by the motor, and a bearing is fitted at the lower end of the drive shaft. A pair of upper and lower support arms are fixedly connected to the shaft wall of the drive shaft. A filter cylinder is fixedly connected to the end of each of the upper and lower support arms furthest from the drive shaft. A screen is hinged to the lower end of each filter cylinder via a connecting shaft, and a fixing plate is provided below the filter cylinder. This device can filter biogas slurry using corn stalk filter media, effectively removing suspended solids. Furthermore, the filtered filter media is composted, and the filtered biogas slurry is recycled after treatment, reducing biogas slurry treatment costs and demonstrating good economic benefits.

[0004] However, when the above-mentioned device is in use, it can only use one type of filter media to treat biogas slurry in a single stage. Single-stage treatment is difficult to meet the needs of graded removal of complex pollutants, resulting in unstable treatment effect. Summary of the Invention

[0005] This application provides a multi-stage environmental protection treatment device and method for biogas slurry and biogas residue, which solves the technical problem that the existing technology can only use one type of filter media for single-stage treatment of biogas slurry, and single-stage treatment is difficult to meet the needs of graded removal of complex pollutants; it achieves the technical effect of automatically replacing multi-stage filter media while performing multi-stage treatment of biogas slurry.

[0006] This application provides a multi-stage environmentally friendly treatment device for biogas slurry and biogas residue, including a shell. A conveying pump is installed on one side of the shell, and inlet pipe 1 and inlet pipe 2 are respectively connected to the two ends of the conveying pump. A central shaft is horizontally installed inside the shell, and multiple treatment components are sequentially installed on the intermediate pipe. Each treatment component includes a support box and a conversion component. The support box includes an annular plate 1, a side arc plate, and an annular plate 2. The annular plate 1 and the annular plate 2 are coaxially sleeved on the central shaft, and the side arc plate is fixed between the annular plate 1 and the annular plate 2. A material injection port is opened at the upper end of the side arc plate. Multiple intermediate pipes are installed at the top inner part of the shell, and the intermediate pipes are connected to... The injection ports correspond one-to-one; the bottom end of the intermediate tube is fixedly connected to the corresponding injection port, and the other end of the intermediate tube passes through the shell and is connected to the feed hopper; the conversion component is rotatably disposed inside the carrier box; the conversion component includes a rotating cylinder, on which multiple partitions are evenly arranged circumferentially; the rotating cylinder is slidably sleeved on the central shaft; multiple mounting slots are opened on the central shaft, and a drive component is embedded in the mounting slot, which is used to drive the rotating cylinder to rotate; a Z-shaped tube is connected between two adjacent carrier boxes; the carrier box closer to the second inlet pipe is connected to the second inlet pipe; the carrier box farther from the second inlet pipe is connected to an outlet pipe, which extends out of the shell.

[0007] Preferably, the drive assembly includes a drive unit and a drive gear, the drive gear being coaxially mounted on the drive end of the drive unit; an annular gear ring is provided on the inner wall of the rotating drum, the gear ring meshing with the drive gear.

[0008] Preferably, the side arc plate is arc-shaped, and the open end of the side arc plate faces downward; the inner diameter of the rotating cylinder, the inner diameter of the first annular plate, the inner diameter of the second annular plate, and the outer diameter of the central shaft are equal; the end of the partition away from the rotating cylinder slides against the inner wall of the side arc plate, and the two sides of the partition slide in contact with the first annular plate and the second annular plate, respectively.

[0009] Preferably, the interior of the carrier box can be divided into multiple spaces by the conversion component. The lower open space is a material discharge chamber, which is connected to the bottom opening of the side arc plate. The upper open space is a material injection chamber, which is connected to the intermediate tube. Any one of the multiple sealed spaces that can be divided into the interior of the carrier box by the conversion component is a processing chamber. The processing chamber has an inlet and an outlet on both sides. The inlet is connected to the outlet end of the corresponding Z-shaped tube or the second inlet tube, and the outlet is connected to the inlet end of the corresponding Z-shaped tube or the outlet tube, so that the second inlet tube, the Z-shaped tube, and the outlet tube are respectively connected to the processing chamber inside the corresponding carrier box.

[0010] Preferably, a one-way valve is provided on the liquid outlet of the processing chamber, the liquid outlet is located at the bottom of the processing chamber and near the side arc plate, and the liquid inlet is located at the top of the processing chamber and near the side arc plate.

[0011] Preferably, a push plate is arranged in a ring between two adjacent partitions. The push plate is arc-shaped and fits against the side arc plate. The push plate is hinged to the side arc plate, and the hinge axis of the push plate hinge position is coaxial with the rotating drum. As the rotating drum rotates, the push plates can enter the processing chamber in sequence. The hinge position of the push plate entering the processing chamber is located at the bottom of the push plate.

[0012] Preferably, a partition layer is provided on the side of the push plate away from the hinge position, and the side of the partition layer away from the push plate is provided on the rotating cylinder.

[0013] Preferably, the push plate is made of permanent magnet or ferromagnetic metal; a magnetic component is provided on the outer side of the side arc plate, and the magnetic component is located outside the processing cavity.

[0014] Preferably, a vibration layer is provided on both sides of the partition; the perimeter of the vibration layer is sealed to the perimeter of the partition, and the middle area of ​​the vibration layer is attached to the partition; the vibration layer has multiple inner chambers filled with magnetic powder.

[0015] A multi-stage environmentally friendly treatment method for biogas slurry and biogas residue, equipped with the aforementioned multi-stage environmentally friendly treatment device for biogas slurry and biogas residue, the method comprising: S1: First, inject the filter packing into the injection chamber of the carrier box through the feed hopper and intermediate pipe; S2: Start the delivery pump. The delivery pump draws in the biogas slurry from the outside through the first inlet pipe, and then delivers it through the second inlet pipe to the processing chamber inside the shell, which is located near the second inlet pipe. S3: After the biogas slurry enters the treatment chamber of the first carrier box, it comes into contact with the filter packing in the treatment chamber and begins preliminary treatment. The treated biogas slurry flows out from the one-way valve and flows into the treatment chamber of the next carrier box through the Z-shaped pipe for secondary treatment. S4: Following step S3, the biogas slurry flows sequentially through the treatment chambers of multiple carrier boxes to achieve multi-stage treatment; S5: When the filter media in the carrier box needs to be replaced, control the delivery pump to stop delivering biogas slurry. At this time, the biogas slurry inside the treatment chamber of the carrier box will gradually be discharged through the one-way valve. Then, control the corresponding drive component to drive the rotating drum to rotate, so that the filter media in the treatment chamber can move to the discharge chamber and the filter media in the injection chamber can move to the treatment chamber, realizing the cyclic renewal of the filter media and ensuring the treatment effect.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages: This application proposes a multi-stage environmental protection treatment device for biogas slurry and biogas residue. The device has a central shaft inside its shell, on which multiple treatment components are sequentially mounted. Each treatment component consists of a support box and a conversion component. The support box is formed by an annular plate and side arc plates, connecting to an intermediate pipe and a feed hopper. The rotating cylinder of the conversion component is slidably mounted on the central shaft and is driven to rotate by a drive assembly. Adjacent support boxes are connected by Z-shaped pipes, and the inlet pipe, Z-shaped pipe, and outlet pipe are respectively connected to the treatment chamber. The drive assembly drives the conversion component to rotate, achieving the cyclical renewal of the filter media between the treatment chamber, the discharge chamber, and the injection chamber, ensuring the multi-stage treatment effect. This effectively solves the technical problem in existing technologies where only one type of filter media can be used for single-stage treatment of biogas slurry, making it difficult to meet the graded removal requirements of complex pollutants. Furthermore, it achieves the technical effect of automatically replacing the multi-stage filter media while performing multi-stage treatment of biogas slurry. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention. Figure 2 This is a schematic diagram showing the location of the processing components in the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 3 This is a schematic diagram of the supporting box structure of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 4 This is a schematic diagram of the processing components of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 5 This is a schematic diagram showing the location of the drive components in the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 6 This is a schematic diagram showing the connection between the intermediate pipe and the inlet of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 7 This is a schematic diagram showing the position of the push plate in the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 8 This is a schematic diagram of the state of the push plate in the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 9 This is a schematic diagram of the one-way valve position of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 10 This is a schematic diagram showing the location of the vibration layer in the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 11 This is a schematic diagram of the vibration layer structure of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention; Figure 12 This is a schematic diagram of the rolling chamber and rolling block of the multi-stage environmental protection treatment device for biogas slurry and biogas residue of the present invention.

[0018] In the diagram: 100, shell; 110, transfer pump; 120, inlet pipe one; 130, inlet pipe two; 140, outlet pipe; 150, feed hopper; 160, intermediate pipe; 170, central shaft; 171, mounting groove; 200, processing component; 210, bearing box; 211, annular plate one; 212, side arc plate; 213, annular plate two; 214, inlet; 215, one-way valve; 216, magnetic assembly; 220, conversion component; 221, rotating drum; 222, partition plate; 223, gear ring; 224, push plate; 225, partition layer; 226, vibration layer; 227, inner chamber; 228, rolling chamber; 229, rolling block; 300, Z-shaped tube; 400, drive assembly; 410, drive unit; 420, drive gear. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0020] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0021] 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 invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Example: Figures 1 to 6 As shown, the multi-stage environmental protection treatment device for biogas slurry and biogas residue of this application includes a shell 100, a power component, and a control unit.

[0023] A delivery pump 110 is provided on one side of the housing 100, and the two ends of the delivery pump 110 are respectively connected to a liquid inlet pipe 120 and a liquid inlet pipe 130.

[0024] Specifically, the input end of the transfer pump 110 is connected to an inlet pipe 120, which is located outside the housing 100; the output end of the transfer pump 110 is connected to an inlet pipe 130, which is located inside the housing 100.

[0025] Among them, the transfer pump 110 can be a water pump.

[0026] Inside the housing 100, a central shaft 170 is horizontally arranged, and multiple processing components 200 are sequentially arranged on the intermediate tube 160.

[0027] In this application, the intermediate tube 160 is used not only for conveying filter media, but also for supporting the processing unit 200.

[0028] It should be noted that there can be 3, 4, 5, 6, or 7 processing units 200, and the specific number can be selected according to actual needs, which will not be elaborated here.

[0029] The processing unit 200 includes a carrier box 210 and a conversion unit 220.

[0030] The supporting box 210 includes an annular plate 211, a side arc plate 212, and an annular plate 213.

[0031] Annular plate 1 211 and annular plate 2 213 are coaxially sleeved on the central shaft 170, and side arc plate 212 is fixed between annular plate 1 211 and annular plate 2 213.

[0032] It should be noted that the annular plate 211, the side arc plate 212, and the annular plate 213 can be integrally formed or welded together.

[0033] The side arc plate 212 is arc-shaped, and the open end of the side arc plate 212 faces downward.

[0034] The axis of the side arc plate 212 is coaxial with the central axis 170.

[0035] A material inlet 214 is provided at the upper end of the side arc plate 212.

[0036] Multiple intermediate tubes 160 are provided on the inner top of the housing 100, and each intermediate tube 160 corresponds to a filling port 214.

[0037] The bottom end of the intermediate tube 160 is fixedly connected to the corresponding injection port 214, and the other end of the intermediate tube 160 passes through the housing 100 and is connected to the feed hopper 150.

[0038] Among them, the feed hopper 150 and the intermediate pipe 160 correspond one-to-one.

[0039] Optionally, a vent hole is provided on one side of the injection port 214 to facilitate gas exchange inside and outside the carrying box 210.

[0040] It should be noted that the upper part of the intermediate tube 160 can be fixed to the inner top of the housing 100 by bolts, and the lower part of the intermediate tube 160 can be connected to the side arc plate 212 by bolts.

[0041] The conversion component 220 is rotatably disposed inside the carrier box 210.

[0042] The conversion component 220 includes a rotating drum 221, on which multiple partitions 222 are evenly arranged circumferentially.

[0043] It should be noted that there can be 3, 4, 5, or 6 partitions 222, etc. The specific number can be selected according to actual needs, which will not be elaborated here.

[0044] The rotating drum 221 is slidably sleeved on the central shaft 170.

[0045] Multiple mounting slots 171 are provided on the central shaft 170, and a drive assembly 400 is embedded in the mounting slot 171. The drive assembly 400 is used to drive the rotating drum 221 to rotate.

[0046] The mounting slot 171, drive assembly 400, and rotating drum 221 correspond one-to-one.

[0047] Specifically, such as Figure 3 and Figure 5 As shown, the drive assembly 400 includes a drive unit 410 and a drive gear 420, with the drive gear 420 coaxially mounted on the drive end of the drive unit 410.

[0048] The drive unit 410 can be a drive motor.

[0049] An annular gear ring 223 is provided on the inner wall of the rotating drum 221, and the gear ring 223 meshes with the drive gear 420.

[0050] It should be noted that the drive gear 420 extends out of the mounting groove 171 and meshes with the gear ring 223, and the drive unit 410 can be installed inside the mounting groove 171 by means of bolt fixing or snap connection.

[0051] In addition, multiple balls (not shown in the figure) are rotatably arranged between the rotating drum 221 and the central shaft 170. The balls are embedded in the inner wall of the rotating drum 221 and are staggered from the gear ring 223. The arrangement of the balls is a conventional technical means and will not be described in detail here.

[0052] A sealing strip (not shown in the figure) may be provided on the side wall of the partition 222, so that the annular plate 211, the side arc plate 212 and the annular plate 213 are in sealed contact with the partition 222 respectively; the sealing strip can be fixed on the partition 222 by bolts or snap-fit ​​connection, which makes it convenient for relevant personnel to replace the sealing strip.

[0053] Specifically, such as Figure 2 and Figure 4As shown, the inner diameter of the rotating cylinder 221, the inner diameter of the first annular plate 211, the inner diameter of the second annular plate 213, and the outer diameter of the central shaft 170 are equal; the end of the partition plate 222 away from the rotating cylinder 221 slides against the inner wall of the side arc plate 212, and the two sides of the partition plate 222 slide against the first annular plate 211 and the second annular plate 213 respectively, so that the interior of the carrying box 210 can be divided into multiple sealed spaces and two open spaces, upper and lower, by the conversion component 220.

[0054] The annular plate 211 is located on the side of the side arc plate 212 near the liquid inlet pipe 230, and the annular plate 213 is located on the side of the side arc plate 212 away from the liquid inlet pipe 230.

[0055] A Z-shaped tube 300 is connected between two adjacent carrier boxes 210; an annular plate 211 on one carrier box 210 near the inlet pipe 130 is connected to the inlet pipe 130; an annular plate 213 on one carrier box 210 away from the inlet pipe 130 is connected to an outlet pipe 140, which extends out of the housing 100.

[0056] Specifically, such as Figure 3 As shown, the interior of the carrier box 210 can be divided into multiple spaces by the conversion component 220. The lower open space is the material discharge chamber, which is connected to the bottom opening of the side arc plate 212. The upper open space is the material injection chamber, which is connected to the intermediate tube 160. Any one of the multiple sealed spaces that can be divided into the interior of the carrier box 210 by the conversion component 220 is a processing chamber. The processing chamber has an inlet and an outlet on both sides. The inlet is connected to the outlet end of the corresponding Z-shaped tube 300 or the second inlet tube 130, and the outlet is connected to the inlet end of the corresponding Z-shaped tube 300 or the outlet tube 140, so that the second inlet tube 130, the Z-shaped tube 300 and the outlet tube 140 are respectively connected to the processing chamber inside the corresponding carrier box 210.

[0057] It should be added that the inlet and outlet are fixedly installed on the annular plate 211 and annular plate 213 respectively. The positions of the inlet and outlet are fixed and will not change due to the change of the processing chamber. This ensures that the inlet and outlet positions remain fixed after the processing chamber is changed.

[0058] It should be noted that the liquid outlet end of the Z-type tube 300 is the end of the Z-type tube 300 that is far away from the liquid inlet pipe 2 130, and the liquid inlet end of the Z-type tube 300 is the end of the Z-type tube 300 that is close to the liquid inlet pipe 2 130.

[0059] It should be noted that the processing chambers are located on both sides of the carrier box 210. The rotating drum 221 is driven by the drive assembly 400 to rotate, thereby causing the filter media inside the carrier box 210 to move circumferentially. The direction of rotation of the drive unit 410 is selected according to actual needs, so that the filter media in the processing chamber can move into the discharge chamber, and the filter media in the injection chamber can move into the processing chamber (see...). Figure 8 and Figure 9 Furthermore, the drive unit 410 in this application rotates periodically at a certain angle, which can be the included angle between two adjacent partitions 222.

[0060] In addition, the ventilation holes on the side arc plate 212 corresponding to the injection chamber position are used for gas exchange during the injection process, so that there will not be too large air bubbles between the filter packing injected into the injection chamber. This method is common knowledge and will not be described in detail here.

[0061] Furthermore, such as Figures 2 to 4 as well as Figure 8 and Figure 9 As shown, a one-way valve 215 is installed on the liquid outlet in the processing chamber. The liquid outlet is located at the bottom of the processing chamber and close to the side arc plate 212, while the liquid inlet is located at the top of the processing chamber and close to the side arc plate 212.

[0062] It should be noted that in this application, the positions of the central shaft 170 and the carrier box 210 remain unchanged. The conversion component 220 is driven to rotate by the drive component 400. This means that the positions of the liquid outlet and liquid inlet in the processing chamber remain unchanged, and the liquid outlets in multiple carrier boxes 210 can be located at the same height, and the liquid inlets in multiple carrier boxes 210 can be located at the same height. At this time, there will be a height difference between the two ends of the Z-shaped tube 300. At this time, the action of the delivery pump 110 is used to make the biogas slurry flow smoothly in the Z-shaped tube 300, and to prevent the biogas slurry from stagnating in the Z-shaped tube 300 due to its own gravity. Therefore, in this embodiment, the shape of the Z-shaped tube 300 can also be S-shaped or inclined straight, and is not limited to the Z-shaped shape in this application. This is a conventional choice in the prior art and will not be elaborated here.

[0063] The power component is used to supply power for the operation of the processing device, preferably an AC power supply or a battery; the control unit is used to control the coordinated operation of the various components of the processing device, preferably a programmable logic controller; both are existing technologies and will not be described in detail here.

[0064] It should be added that the different processing components 200 in this application can use filter media of different materials, such as natural material filter media (e.g., straw pellets, sand and gravel), synthetic material filter media (e.g., polypropylene fiber), and biological filter media (e.g., activated carbon); they can also use filter media of the same material but different particle sizes (e.g., sand or straw pellets of different particle sizes); in addition, the feed hopper 150 can store these filter media to replace and replenish the filter media inside the processing component 200, and the feed hopper 150 can be connected to a dedicated filter media conveying pipeline (not shown in the figure) to replenish the filter media in the feed hopper 150 through automated conveying. This is a conventional choice in the prior art and will not be described in detail here.

[0065] The multi-stage environmental protection treatment device for biogas slurry and biogas residue according to this application embodiment operates as follows: S1: First, the filter packing is injected into the filling chamber of the carrier box 210 through the feed hopper 150 and the intermediate pipe 160; S2: Start the transfer pump 110. The transfer pump 110 draws in the external biogas slurry through the first inlet pipe 120 and then delivers it through the second inlet pipe 130 to the processing chamber of a carrier box 210 inside the shell 100 near the second inlet pipe 130 (the annular plate 211 of the carrier box 210 is connected to the second inlet pipe 130). S3: After the biogas slurry enters the treatment chamber of the first carrier box 210, it comes into contact with the filter packing in the treatment chamber and begins preliminary treatment. The treated biogas slurry flows out from the one-way valve 215 and flows into the treatment chamber of the next carrier box 210 through the Z-shaped pipe 300 for secondary treatment. S4: Following step S3, the biogas slurry flows sequentially through the treatment chambers of multiple carrier boxes 210 to achieve multi-stage treatment; S5: When it is necessary to replace the filter media in one or more of the carrier boxes 210, control the delivery pump 110 to stop delivering biogas slurry. At this time, the biogas slurry inside the treatment chamber of the carrier box 210 will gradually be discharged through the one-way valve 215. Then, control the corresponding drive component 400 to drive the rotating drum 221 to rotate, so that the filter media in the treatment chamber can move to the discharge chamber and the filter media in the injection chamber can move to the treatment chamber, realizing the cyclic renewal of the filter media and ensuring the treatment effect.

[0066] The treated biogas slurry described in this application can be used for returning to the field or for fish farming, which is a conventional choice in the prior art and will not be described in detail here.

[0067] It should be noted that the replacement cycle of each treatment component 200 can be defined according to the different filter media. For example, when the filter media is straw pellets, it can be set to be replaced after one week of continuous use. Alternatively, flow meters (not shown in the figure, such as electromagnetic flow meters) can be installed on each Z-shaped pipe 300 and the liquid outlet pipe 140 to detect the outflow liquid velocity of each treatment component 200, and the filter media can be replaced according to the liquid velocity. The above are conventional choices in the prior art and will not be elaborated here.

[0068] It should be added that the bottom of the shell 100 can be provided with multiple storage boxes (not shown in the figure), and the storage boxes correspond one-to-one with the processing components 200. The storage boxes are located directly below the side arc plate 212 in the corresponding processing component 200, so that the replaced filter media can fall into the storage box. If the filter media is sand or gravel, it can be washed and recycled. If the filter media is straw pellets, it can be fermented again and returned to the field for reuse.

[0069] For example, suppose there are four partitions 222 in the conversion component 220, and these four partitions 222 are arranged perpendicular to each other; the bottom opening of the side arc plate 212 faces vertically downwards, so these four partitions 222 divide the carrier box 210 into four spaces at a 45-degree angle. The upper one is the injection chamber, the lower one is the discharge chamber, and either one of the two spaces is a processing chamber. Each time the filter packing needs to be replaced, the drive assembly 400 drives the rotating drum 221 to rotate 90 degrees, so that the filter packing originally located in the processing chamber enters the discharge chamber and falls under the action of gravity; the filter packing originally located in the injection chamber enters the processing chamber for use; after rotation, the injection chamber will be refilled until the injection chamber is full of filter packing again.

[0070] Understandably, by arranging multiple carrier boxes 210 in sequence, the biogas slurry flows through multiple treatment chambers sequentially, achieving multi-stage treatment. This allows for more thorough treatment of the biogas slurry and residue, improving treatment effect and efficiency, and effectively removing impurities and harmful substances from the biogas slurry, resulting in higher quality treated biogas slurry. Multiple baffles 222 are evenly arranged circumferentially on the rotating cylinder 221 of the conversion component 220, dividing the internal space of the carrier box 210. The rotating cylinder 221 is slidably mounted on the central shaft 170. Driven by the drive assembly 400, the rotating cylinder 221 rotates, enabling circumferential movement of the filter media within the carrier box 210. This allows the filter media to circulate and change between different spaces (injection chamber, treatment chamber, and discharge chamber), ensuring the filter media is always in optimal working condition. The system improves the utilization rate and treatment effect of the filter media; a one-way valve 215 is installed at the outlet of the treatment chamber, and the outlet is located at the bottom of the treatment chamber near the side arc plate 212, while the inlet is located at the top of the treatment chamber near the side arc plate 212. This liquid level difference facilitates full contact between the biogas slurry and the filter media in the treatment chamber, ensuring the treatment effect. At the same time, the one-way valve 215 prevents backflow of biogas slurry, ensuring the stability of the treatment process; the Z-shaped pipe 300 also takes into account the height difference between the outlet and inlet of multiple bearing boxes 210, ensuring that biogas slurry can flow smoothly from the treatment chamber of one treatment component 200 to the treatment chamber of the next treatment component 200; in addition, the material or particle size of the filter media can be freely selected according to different biogas slurry and biogas residue treatment needs, making it suitable for different biogas slurry and biogas residue treatments.

[0071] It should be noted that during the use of the equipment in this application, after a batch of biogas slurry is treated, due to the liquid level difference between the two ends of the Z-shaped pipe 300, some biogas slurry will remain in the Z-shaped pipe 300. At this time, clean water can be injected into the inlet pipe 120 by the delivery pump 110 to flush out the biogas slurry in the Z-shaped pipe 300 for treatment. This method is a conventional technical choice and will not be described in detail here.

[0072] like Figures 7 to 9 As shown, in another embodiment of this application, there is a ring array of push plates 224 between two adjacent partitions 222. The shape of the push plates 224 is arc-shaped and the push plates 224 are attached to the side arc plate 212.

[0073] The push plate 224 is hinged to the side arc plate 212, and the hinge axis of the push plate 224 is coaxial with the rotating cylinder 221. As the rotating cylinder 221 rotates, the push plate 224 can enter the processing chamber in sequence. The hinge position of the push plate 224 that enters the processing chamber is located at the bottom of the push plate 224.

[0074] Understandably, during the filter media circulation and renewal process, when the filter media in the treatment chamber moves to the discharge chamber and the filter media in the injection chamber moves to the treatment chamber, the pusher plate 224 pushes the new filter media within the treatment chamber. This helps the new filter media to better perform its filtration function and ensures the stability of the treatment effect. Simultaneously, the pushing process also promotes the discharge of gas inside the filter media, making the internal structure of the filter media more uniform, which is beneficial for subsequent treatment of biogas slurry. It increases the contact area between the biogas slurry and the filter media, allowing for more complete material exchange between the biogas slurry and the filter media, thus improving the treatment of biogas slurry. The removal effect of impurities and harmful substances; at the same time, the pushing action of the pusher plate 224 in the treatment chamber can change the flow state of the biogas slurry in the treatment chamber, so that the biogas slurry forms a certain turbulence in the treatment chamber, breaking up any possible dead flow corners, allowing the biogas slurry to flow more evenly through the filter packing, avoiding the situation where some filter packing is overused while other parts are not fully utilized, improving the overall utilization rate of the filter packing, and extending the service life of the filter packing; on the other hand, when the filter packing enters the discharge chamber, the pusher plate 224 can push the filter packing to fall, preventing the filter packing from being unable to fall smoothly due to compaction.

[0075] Furthermore, such as Figure 8 and Figure 9 As shown, a partition layer 225 is provided on the side of the push plate 224 away from the hinge position, and the side of the partition layer 225 away from the push plate 224 is provided on the rotating cylinder 221.

[0076] The material of the separating layer 225 can be nylon cloth or silicone rubber.

[0077] It should be noted that the two sides of the partition layer 225 can be connected to the corresponding push plate 224 and the rotating cylinder 221 respectively by means of bolt fixing or snap-fit ​​connection.

[0078] It is understandable that by setting the partition layer 225, the partition layer 225 is used to separate the filter packing, so as to prevent some of the filter packing from entering between the push plate 224 and the rotating cylinder 221 during the process of the push plate 224 compacting the filter packing. In addition, the partition layer 225 is made of nylon cloth or silicone rubber. If it is nylon cloth, it can also filter the biogas slurry. If it is silicone rubber (waterproof material), it can separate some of the biogas slurry.

[0079] Furthermore, such as Figure 8 and Figure 9 As shown, the material of the push plate 224 in this embodiment can be a permanent magnet (such as a neodymium iron boron magnet) or a ferromagnetic metal (such as metallic iron).

[0080] A magnetic component 216 is provided on the outer side of the side arc plate 212, and the magnetic component 216 is located on the outer side of the processing cavity.

[0081] The magnetic component 216 can be an electromagnet, and the magnetic component 216 is magnetically attracted to the partition 222.

[0082] It should be noted that in this embodiment, the side arc plate 212 and the partition plate 222 can be made of acrylic sheet material, which will not hinder the magnetic force between the magnetic component 216 and the push plate 224. In addition, the magnetic force of the magnetic component 216 can be increased to reduce the influence of the filter filler on the magnetic force between the magnetic component 216 and the push plate 224. This method is a conventional technical means and will not be described in detail here.

[0083] It should be noted that the magnetic component 216 can be a DC electromagnet, in which case the magnetic component 216 and the partition 222 are magnetically attracted; the magnetic component 216 can also be an AC electromagnet, and the magnetic poles of the magnetic component 216 can be changed by changing the direction of the current.

[0084] Understandably, by controlling the magnetic attraction between the magnetic component 216 and the partition 222, and controlling the magnitude of the current to control the magnitude of the magnetic attraction force, the squeezing force of the push plate 224 on the filter media can be adjusted, adapting to different filter media. For straw pellet filter media, by changing the squeezing force of the push plate 224 on the straw pellets, the gap between the straw pellets can be changed, thereby achieving different filtration accuracies. The greater the squeezing force of the push plate 224 on the straw pellets, the smaller the gap between the straw pellets, and the higher the filtration accuracy of the biogas slurry; conversely, the smaller the squeezing force of the push plate 224 on the straw pellets, the larger the gap between the straw pellets, and the lower the filtration accuracy of the biogas slurry. The filtration accuracy can be adjusted to a certain extent during use. Moreover, this method is not limited to straw pellet filter media, but can also be applied to fiber-based (such as wood fiber, hemp fiber, coconut shell fiber) or other biomass pellets (such as rice husk pellets, peanut shell pellets).

[0085] Preferably, in this embodiment, a sensor group (not shown in the figure) can be provided on the inlet pipe 130, the Z-shaped pipe 300, and the outlet pipe 140, and the sensor group is fixed on the rotating drum 221; the sensor group includes at least a pH sensor, a turbidity sensor, a COD detector, and an ammonia nitrogen sensor.

[0086] The pH sensor can be an industrial-grade online pH sensor to detect the acidity and alkalinity of the biogas slurry entering and flowing out of the treatment chamber in real time, and to determine whether the acid-base balance capacity of the filter media has declined. A laser turbidity sensor can be used to detect the suspended solids content in biogas slurry, directly reflecting the retention effect of the filter media. The COD detector can use an online COD sensor based on the potassium dichromate method to monitor the chemical oxygen demand of biogas slurry and determine the COD removal rate of organic pollutants. Ammonia nitrogen sensors can be ion-selective electrode ammonia nitrogen sensors to specifically monitor ammonia nitrogen, a characteristic pollutant in biogas slurry, to ensure the safety of subsequent return to the field or aquaculture.

[0087] It should be noted that the specific installation locations and methods for the pH sensor, turbidity sensor, COD detector, and ammonia nitrogen sensor are common knowledge and will not be elaborated here.

[0088] Preferably, in this embodiment, a miniature pressure sensor (not shown in the figure) is provided between two adjacent partitions 222, and the miniature pressure sensor is embedded in the rotating cylinder 221 or the inner wall of the side arc plate 212.

[0089] Specifically, when the miniature pressure sensor is embedded in the side arc plate 212, the side arc plate 212 corresponding to the material discharge chamber is open, and the miniature pressure sensor may not be installed here.

[0090] It should be noted that the specific installation location and method of the miniature pressure sensor are common knowledge and will not be elaborated here.

[0091] Understandably, the miniature pressure sensor located in the injection chamber can detect the amount of filter packing material remaining; the miniature pressure sensor located in the processing chamber can monitor the compaction of the filter packing material, and the pressure value will rise when the density of the packing material increases due to impurities being trapped; the miniature pressure sensor located in the discharge chamber can detect whether the filter packing material has fallen smoothly.

[0092] Specifically, when the COD removal rate of a certain treatment chamber is lower than the lower preset threshold (e.g., 80%), the flow rate of the delivery pump 110 is automatically reduced to prolong the residence time of the biogas slurry in the treatment chamber; when the removal rate is higher than the upper preset threshold (e.g., 95%), the flow rate can be increased to improve treatment efficiency; by adjusting the current of the magnetic component 216, the magnetic attraction force is changed, thereby adjusting the squeezing force of the push plate 224 on the filter media. For example, when the turbidity difference before and after a certain treatment chamber is less than the preset turbidity difference (e.g., 50 NTU), the squeezing force is increased to reduce the gap between the media and improve the filtration accuracy; when the compaction degree is detected to exceed the preset squeezing value, the squeezing force is reduced to avoid clogging; in addition, when the compaction degree is detected to exceed the preset squeezing value and the turbidity difference before and after is less than the preset turbidity difference, or when the COD removal rate is lower than the lower preset threshold and the flow rate of the delivery pump 110 is lower than the preset flow rate value, these two situations can also be used as triggering conditions for automatic replacement of the filter media. When either of these two situations occurs, the corresponding conversion component 220 rotates to replace the media.

[0093] It should be noted that the lower limit preset threshold, upper limit preset threshold, preset turbidity difference, and preset compression value may be different for different processing chambers. The specific value range can be selected according to actual needs, which will not be elaborated here.

[0094] Furthermore, such as Figure 10 and Figure 11 As shown, in another embodiment of this application, a vibration layer 226 is provided on both sides of the partition 222.

[0095] In this example, the material of the push plate 224 can be a permanent magnet (such as a neodymium iron boron magnet).

[0096] The four edges of the vibrating layer 226 are sealed to the four edges of the partition 222, and the middle area of ​​the vibrating layer 226 is attached to the partition 222.

[0097] The vibrating layer 226 has multiple inner chambers 227, which are filled with iron powder or magnetic powder.

[0098] It should be noted that the number of internal chambers 227 can be 30, 35, 40, or 45, etc. The specific number and location distribution can be selected according to actual needs, which will not be detailed here.

[0099] The vibrating layer 226 can be made of an elastomer, such as silicone rubber or butyl rubber.

[0100] It is understandable that the vibrating layers 226 arranged on both sides of the partition 222 have multiple inner chambers 227 filled with iron powder or magnetic powder. When the magnetic component 216 is working, the magnetic field changes it generates will act on the iron powder or magnetic powder in the inner chambers 227 of the vibrating layers 226 located in the processing chamber. Since the iron powder or magnetic powder will be subjected to magnetic force in the magnetic field, it will move. This movement will cause impact and disturbance to the vibrating layers 226. The impact and disturbance to the vibrating layers 226 will be transmitted to the partition 222, thereby causing the partition 222 to vibrate. The vibration of the partition 222 will be transmitted to the filter media in contact with it, causing the filter media to vibrate slightly. This vibration can break the filter media particles. Vibration effectively prevents blockages (such as clumping of highly viscous filter media), making the filtration channels smoother and ensuring more uniform distribution of the filter media, thus improving filtration efficiency. Furthermore, when the filter media needs to be discharged, the push plate 224 in the discharge chamber rotates under its own weight. This changes the distance between the push plate 224 and the two vibrating layers 226, causing a change in magnetic force between the push plate 224 and the iron or magnetic powder in the vibrating layers 226. This vibration causes the vibrating layers 226 to vibrate, dislodging the filter media adhered to them (especially for filter media that have become sticky after use).

[0101] Furthermore, such as Figure 12As shown, multiple rolling cavities 228 are formed inside the vibrating layer 226, which is away from the hinge position of the push plate 224, and the rolling cavities 228 are perpendicular to the axis of the rotating drum 221.

[0102] A rolling block 229 is slidably disposed inside the rolling cavity 228, and multiple rolling cavities 228 can be distributed in parallel.

[0103] The rolling block 229 can be made of an elastomer, such as elastic rubber.

[0104] It should be noted that there may be 3, 4, 5, 6, or 7 rolling chambers 228, etc. The specific number and location distribution of the rolling chambers 228 can be selected according to actual needs, which will not be elaborated here.

[0105] It should be added that the rolling cavity 228 may be provided with one rolling block 229 or multiple rolling blocks 229 (such as two or three). The number of rolling blocks 229 can be selected according to actual needs, which will not be elaborated here.

[0106] Understandably, when the filter packing is discharged, the vibrating layer 226, which is far from the hinge position of the push plate 224, is relatively far from the push plate 224. Although the push plate 224 tilts and sways under its own weight, the magnetic attraction between the push plate 224 and the magnetic powder in the corresponding inner chamber 227 is weak due to the distance between them. This makes it difficult to drive the vibrating layer 226 to vibrate effectively, resulting in a higher probability of filter packing residue remaining on the vibrating layer 226. By setting up the rolling chamber 228 and the rolling block 229, when the push plate 224 (the vibrating layer 226, which is far from the hinge position of the push plate 224) enters the discharge chamber from the processing chamber, the rolling block 229 in the rolling chamber 228 will roll along the material under its own weight. The sliding of cavity 228 exerts a downward pulling force on the vibrating layer 226, causing the vibrating layer 226 to vibrate. Because the rolling block 229 has a certain elasticity, the rolling block 229 will bounce repeatedly until it comes to a stop. During this process, the corresponding vibrating layer 226 will continue to vibrate, thus better shaking the filter packing down. When the push plate 224 (the vibrating layer 226 away from the hinge position of the push plate 224) enters the injection cavity, the rolling block 229 will also slide in the rolling cavity 228, thus causing the vibrating layer 226 to vibrate. This vibration can be transmitted to the filter packing in the injection cavity, which can help this part of the filter packing fall and accumulate more compactly, reducing the air bubble gaps.

[0107] In addition, not only can the structure of rolling cavity 228 and rolling block 229 be provided on the vibrating layer 226 away from the hinge position of the push plate 224, but the structure of rolling cavity 228 and rolling block 229 can also be provided on the vibrating layer 226 near the hinge position of the push plate 224.

[0108] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-stage environment-friendly treatment device for biogas slurry and biogas residue, characterized in that, Including the shell (100), one side of the shell (100) is provided with a delivery pump (110), both ends of the delivery pump (110) are connected with liquid inlet pipe one (120) and liquid inlet pipe two (130) respectively, The center shaft (170) is further arranged horizontally inside the shell (100), and a plurality of treatment components (200) are arranged on the intermediate pipe (160); The treatment component (200) comprises a bearing box body (210) and a conversion component (220); The annular plate one (211) and the annular plate two (213) are coaxially sleeved on the center shaft (170), and the side arc plate (212) is fixed between the annular plate one (211) and the annular plate two (213); An injection port (214) is arranged at the upper end position of the side arc plate (212); A plurality of intermediate pipes (160) are arranged on the inner top of the shell (100), and the intermediate pipes (160) correspond to the injection ports (214) one by one; The bottom end of the intermediate pipe (160) is fixedly connected with the corresponding injection port (214), and the other end of the intermediate pipe (160) penetrates through the shell (100) and is connected with the feeding hopper (150); The conversion component (220) is arranged inside the bearing box body (210); The conversion component (220) comprises a rotating drum (221), and a plurality of partition plates (222) are uniformly arranged on the rotating drum (221) in the circumferential direction; The rotating drum (221) is slidingly sleeved on the center shaft (170); A plurality of mounting grooves (171) are arranged on the center shaft (170), a driving assembly (400) is embedded in the mounting groove (171), and the driving assembly (400) is used for driving the rotating drum (221) to rotate; Adjacent two bearing box bodies (210) are connected with Z-shaped pipes (300), one bearing box body (210) close to the liquid inlet pipe two (130) is connected with the liquid inlet pipe two (130), and one bearing box body (210) away from the liquid inlet pipe two (130) is connected with the liquid outlet pipe (140). The driving assembly (400) comprises a driving unit (410) and a driving gear (420), and the driving gear (420) is coaxially installed on the driving end of the driving unit (410); 2. The multi-stage environment-friendly treatment device for biogas slurry and residue according to claim 1, characterized in that, An annular gear ring (223) is arranged on the inner wall of the rotating drum (221), and the gear ring (223) is engaged with the driving gear (420). The shape of the side arc plate (212) is arc-shaped, and the opening end of the side arc plate (212) faces downward; 3. The biogas slurry and residue multi-stage environmental protection treatment device according to claim 1, characterized in that, The inner diameter of the rotating drum (221), the inner diameter of the annular plate one (211), the inner diameter of the annular plate two (213) and the outer diameter of the center shaft (170) are equal; one end of the partition plate (222) away from the rotating drum (221) slidingly abuts against the inner wall of the side arc plate (212), and the two sides of the partition plate (222) slidingly contact the annular plate one (211) and the annular plate two (213) respectively. ​ 4. The multi-stage biogas slurry and residue environment-friendly treatment device according to claim 1, characterized in that, The inside of the bearing box (210) can be separated into multiple spaces by the conversion component (220), wherein the open space below is a blanking cavity, which is in communication with the bottom opening of the side arc plate (212); the open space above is an injection cavity, which is in communication with the middle tube (160); wherein any one of the multiple sealed spaces separated by the conversion component (220) in the inside of the bearing box (210) is a treatment cavity, which is provided with a liquid inlet and a liquid outlet on both sides, and the liquid inlet is in communication with the liquid outlet end of the corresponding Z-shaped tube (300) or the second liquid inlet tube (130), and the liquid outlet is in communication with the liquid inlet end of the corresponding Z-shaped tube (300) or the liquid outlet tube (140), so that the second liquid inlet tube (130), the Z-shaped tube (300) and the liquid outlet tube (140) are respectively in communication with the treatment cavity in the inside of the corresponding bearing box (210).

5. The multi-stage biogas slurry and residue environment-friendly treatment device according to claim 4, characterized in that, A one-way valve (215) is arranged on the liquid outlet in the treatment cavity, which is located at the bottom of the treatment cavity and close to the side arc plate (212), and the liquid inlet is located at the top of the treatment cavity and close to the side arc plate (212).

6. The multi-stage environment-friendly treatment device for biogas slurry and residue according to claim 4 or 5, characterized in that, There are push plates (224) in the annular array between adjacent two baffles (222), the shape of the push plate (224) is arc-shaped, and the push plate (224) is attached to the side arc plate (212); The push plate (224) is hinged to the side arc plate (212), and the hinge shaft of the hinge position of the push plate (224) is coaxially arranged with the rotating drum (221); with the rotation of the rotating drum (221), the push plate (224) can enter the treatment cavity in turn, and the hinge position of the push plate (224) entering the treatment cavity is located at the bottom of the push plate (224).

7. The multi-stage biogas slurry and residue environmentally friendly treatment device of claim 6, wherein, A separation layer (225) is arranged on the side of the push plate (224) away from the hinge position, and the side of the separation layer (225) away from the push plate (224) is arranged on the rotating drum (221).

8. The multi-stage biogas slurry and residue environment-friendly treatment device according to claim 6, characterized in that, The material of the push plate (224) is a permanent magnet or a ferromagnetic metal; A magnetic force assembly (216) is arranged on the outside of the side arc plate (212), and the magnetic force assembly (216) is located outside the treatment cavity.

9. The multi-stage biogas slurry and residue environmentally friendly treatment device of claim 8, wherein, A vibration layer (226) is arranged on both sides of the baffle (222); The four peripheral edges of the vibration layer (226) are sealingly connected with the four peripheral edges of the baffle (222), and the middle area of the vibration layer (226) is attached to the baffle (222); Multiple inner cavities (227) are arranged in the vibration layer (226), and the inner cavities (227) are filled with magnetic powder.

10. A multi-stage environment-friendly treatment method for biogas slurry and residue, which is matched with the multi-stage environment-friendly treatment device for biogas slurry and residue as claimed in any one of claims 1 to 9, characterized in that, The method comprises: S1: First, the filter filler is injected into the injection cavity of the bearing box (210) through the inlet hopper (150) and the middle tube (160); S2: Start the delivery pump (110), the delivery pump (110) sucks the external biogas liquid through the first liquid inlet tube (120), and then delivers it into the treatment cavity of the bearing box (210) close to the second liquid inlet tube (130) in the inside of the shell (100); S3: After the biogas slurry enters the processing cavity of the first bearing box (210), it is in contact with the filter filler in the processing cavity to start the preliminary treatment. The treated biogas slurry flows out from the one-way valve (215) and flows into the processing cavity of the next bearing box (210) through the Z-shaped pipe (300) to perform secondary treatment. S4: According to step S3, the biogas slurry sequentially flows through the processing cavities of multiple bearing boxes (210) to realize multi-stage treatment. S5: When it is necessary to replace the filter filler in the bearing box (210), the conveying pump (110) is controlled to stop conveying the biogas slurry. At this time, the biogas slurry in the processing cavity of the bearing box (210) is gradually discharged through the one-way valve (215). Then, the corresponding drive assembly (400) is controlled to drive the rotating drum (221) to rotate, so that the filter filler in the processing cavity can be moved to the discharging cavity, and the filter filler in the charging cavity can be moved to the processing cavity, thereby realizing the cyclic update of the filter filler and ensuring the treatment effect.

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