Biodegradation sludge treatment device

Abstract

The utility model relates to a biodegradable sludge treatment device which comprises a pretreatment mechanism, a microbiological treatment mechanism and a digestion treatment mechanism, and the pretreatment mechanism is used for pretreating sewage; the microbiological treatment mechanism comprises a microbiological treatment assembly and a secondary sedimentation tank, the microbiological treatment assembly is used for purifying the pretreated sewage, a water outlet of the microbiological treatment assembly is communicated with the secondary sedimentation tank, and the secondary sedimentation tank is used for discharging supernatant liquid and precipitating sludge; the digestion treatment mechanism comprises a sludge collecting tank, a sludge pump and an advanced treatment assembly, a sludge outlet of the secondary sedimentation tank is communicated with the sludge collecting tank, the sludge pump is mounted in the sludge collecting tank and discharges sludge in the sludge collecting tank into the advanced treatment assembly, and the advanced treatment assembly degrades the sludge. According to the technical scheme, the digestion treatment mechanism can degrade the settled sludge, so that the total amount of the sludge is reduced by 90% or above, the amount of the sludge needing to be incinerated or landfilled is reduced, and the pollution to the environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of biodegradable sludge technology, and in particular to a biodegradable sludge treatment device. Background Technology

[0002] Existing wastewater treatment methods generally employ biofilm processes. These processes involve adding packing materials to allow microorganisms to grow and proliferate on the surface of the packing materials, forming an activated sludge biofilm that degrades nutrients in the wastewater.

[0003] Wastewater sludge treated by biofilm methods is typically incinerated or landfilled, which easily pollutes the environment. Utility Model Content

[0004] Therefore, there is a need for a biodegradable sludge treatment device to address the problem that existing technologies generally involve incinerating or landfilling the sludge from wastewater treated by biofilm methods, which easily pollutes the environment.

[0005] To achieve the above objectives, this utility model provides a biodegradable sludge treatment device, comprising:

[0006] Pretreatment facilities are used to pretreat wastewater.

[0007] The microbial treatment unit includes a microbial treatment component and a secondary sedimentation tank. The microbial treatment component purifies the pretreated wastewater, and the outlet of the microbial treatment component is connected to the secondary sedimentation tank, which discharges the supernatant and settles the sludge.

[0008] The digestion and treatment unit includes a sludge collection tank, a sludge pump, and a deep treatment component. The sludge outlet of the secondary sedimentation tank is connected to the sludge collection tank. The sludge pump is installed inside the sludge collection tank and discharges the sludge from the sludge collection tank into the deep treatment component, which degrades the sludge.

[0009] Unlike existing technologies, the technical solution of this application can purify wastewater through pretreatment and microbial treatment facilities, and degrade the settled sludge through digestion treatment facilities, thereby reducing the total amount of sludge by more than 90%, reducing the amount of sludge that needs to be incinerated or landfilled, and thus reducing environmental pollution.

[0010] As one embodiment of this utility model, the deep treatment component includes an anaerobic digester, a first three-phase separator, and a first overflow trough. A sludge pump discharges sludge from the sludge collection tank into the anaerobic digester. The first three-phase separator and the first overflow trough are installed inside the anaerobic digester.

[0011] In this way, the sludge is smoothly separated into gas, liquid, and solid by the first three-phase separator. The generated gas is methane, which can be used for power generation. The solid settles, and the upper liquid can be discharged through the first overflow trough. In addition, soil conditioner and anaerobic bacteria can also be produced as byproducts in the anaerobic digester. The anaerobic bacteria can be used for wastewater treatment pilot testing and introduction.

[0012] As one embodiment of the present invention, the deep treatment component also includes a first microbial enhancement plate, which is installed in the anaerobic digester.

[0013] Thus, the addition of a first microbial enhancement plate can strengthen the metabolic efficiency of microorganisms. In particular, it can accelerate the conversion of organic matter into methane in the anaerobic digester, prevent sludge caking, and maintain the efficient operation of the three-phase separator (gas, liquid, solid).

[0014] As one embodiment of this utility model, the deep treatment component also includes an aerobic digestion tank, a first aeration disc, a blower, and a second overflow trough. The outlet of the first overflow trough is connected to the aerobic digestion tank, the first aeration disc is installed inside the aerobic digestion tank, the air outlet of the blower is connected to the aerobic digestion tank, and the second overflow trough is installed inside the aerobic digestion tank.

[0015] Thus, the blower primarily supplies air to the first aeration disc, which achieves efficient oxygen transfer and mixing. By extending the aeration time, the first aeration disc promotes the microorganisms into the endogenous respiration stage, meaning that after the substrate is depleted, the microorganisms begin to decompose their own cellular material, thereby significantly reducing the production of excess sludge. The upper mixed liquor can be discharged through the second overflow trough. In addition, aerobic bacterial agents and soil conditioners can also be produced as byproducts in the aerobic digester.

[0016] As one embodiment of this utility model, the biodegradable sludge treatment device also includes a first sludge concentration detector, which is installed in the aerobic digestion tank and detects the sludge concentration in the aerobic digestion tank. The first sludge concentration detector is communicatively connected to the blower.

[0017] Thus, by connecting the first sludge concentration detector to the blower, the air supply or air supply time of the blower can be adjusted according to the sludge concentration detected by the first sludge concentration detector, thereby adjusting the aeration volume or aeration time of the first aeration disc.

[0018] As one embodiment of this utility model, the deep treatment component also includes an anoxic digester and a third overflow trough. The outlet of the second overflow trough is connected to the anoxic digester, and the third overflow trough is installed inside the anoxic digester.

[0019] In this way, a microaerobic environment is created by the facultative digester, and short-cut nitrification and denitrification are carried out simultaneously under this environment, reducing carbon source addition by 50%-60%. The supernatant can be discharged through the third overflow channel. In addition, facultative anaerobic bacteria and soil conditioners can also be produced as byproducts in the facultative digester.

[0020] In one embodiment of this utility model, the outlet of the third overflow tank is connected to the microbial treatment mechanism.

[0021] In this way, the supernatant in the facultative digester can be returned to the microbial treatment unit through the third overflow channel, thereby improving the utilization of sludge and further degrading it. In addition, it can replenish active microorganisms and reduce the cost of exogenous microbial agents.

[0022] As one embodiment of this utility model, the biodegradable sludge treatment device also includes a PCL control mechanism, which is communicatively connected to the pretreatment mechanism, the microbial treatment mechanism, and the digestion treatment mechanism.

[0023] Thus, the PCL control mechanism includes a variable frequency speed-regulating water pump, aeration device, pH, dissolved oxygen, sludge concentration, fuzzy algorithm, edge computing node and neural network algorithm model, to realize real-time monitoring and adjustment of water quality parameters.

[0024] As one embodiment of this utility model, the pretreatment mechanism includes a bar screen, a regulating tank, a water pump, an electromagnetic flow meter, and a sedimentation tank. The outlet of the bar screen is connected to the regulating tank. The water pump is installed in the regulating tank and pumps the liquid in the regulating tank to the sedimentation tank through the electromagnetic flow meter. The outlet of the sedimentation tank is connected to the microbial treatment mechanism.

[0025] In this way, the bar screen can effectively intercept large particles of impurities and sand, preventing clogging or wear of subsequent microbial treatment mechanisms. The equalization tank balances water quality and quantity, reduces shock loads (such as COD fluctuations within ±15%), and improves the stability of subsequent biological treatment mechanisms.

[0026] As one embodiment of this utility model, the microbial treatment component includes a first AHBBR tank, a second AHBBR tank, an OHBBR tank arranged in series, and microbial materials. The pretreatment mechanism is connected to the first AHBBR tank. Microbial materials are provided in the first AHBBR tank, the second AHBBR tank, and the OHBBR tank. The outlet of the OHBBR tank is connected to the secondary sedimentation tank.

[0027] Thus, through a coupled process of "anaerobic (first AHBBR tank) - anoxic (second AHBBR tank) - aerobic (OHBBR tank)," efficient removal of carbon, nitrogen, and phosphorus is achieved simultaneously (TP removal rate >80%), avoiding the limitations of a single treatment mode. Furthermore, sludge production is reduced; specifically, the anaerobic stage degrades macromolecular organic matter, reducing the proliferation of microorganisms in the subsequent aerobic stage, resulting in a 30%-50% reduction in sludge volume.

[0028] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0029] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0030] In the accompanying drawings of the instruction manual:

[0031] Figure 1 This is a schematic diagram of the structure of a biodegradable sludge treatment device according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the digestion processing mechanism according to one embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the preprocessing mechanism according to one embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a microbial processing mechanism according to an embodiment of this application;

[0035] Figure 5 This is a control principle diagram of a PCL control mechanism according to an embodiment of this application.

[0036] The reference numerals used in the above figures are explained as follows:

[0037] 1-Pretreatment unit; 11-Grit chamber; 12-Equalization tank; 13-Water pump; 14-Electromagnetic flow meter; 15-Grit chamber; 16-Grit separator; 2-Microbial treatment unit; 21-Microbial treatment components; 211-First AHBBR tank; 2111-Circulation pump; 2112-Fourth overflow trough; 2113-Second three-phase separator; 212-Second AHBBR tank; 2121-Agitator; 2122-Second sludge concentration meter; 2123-Fifth overflow trough; 213-OHBBR tank; 2131-Second aeration disc; 2132-Inclined plate; 2133-Third sludge concentration meter; 2134-Dissolved oxygen concentration meter 214-Microbial material; 22-Secondary sedimentation tank; 221-First vertical flow pipe; 222-Sixth overflow trough; 3-Digestion treatment mechanism; 31-Sludge collection tank; 32-Sludge pump; 33-Deep treatment component; 3311-Anaerobic digester; 3312-First three-phase separator; 3313-First overflow trough; 3314-First microbial enhancement plate; 3321-Aerobic digester; 3322-First aeration disc; 3323-Blower; 3324-Second overflow trough; 3325-First sludge concentration detector; 3331-Anoxic digester; 3332-Third overflow trough; 3333-Second vertical flow pipe; 4-PCL control mechanism. Detailed Implementation

[0038] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0039] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0041] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0042] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order between these entities or operations.

[0043] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0044] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0045] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0047] Wastewater sludge treated by biofilm methods is typically incinerated or landfilled, which easily pollutes the environment.

[0048] In view of this, this application provides a biodegradable sludge treatment device, including a pretreatment unit 1, a microbial treatment unit 2, and a digestion treatment unit 3. The pretreatment unit 1 pretreats the wastewater; the microbial treatment unit 2 includes a microbial treatment component 21 and a secondary sedimentation tank 22. The microbial treatment component 21 purifies the pretreated wastewater, and the outlet of the microbial treatment component 21 is connected to the secondary sedimentation tank 22. The secondary sedimentation tank 22 discharges the supernatant and settles the sludge; the digestion treatment unit 3 includes a sludge collection tank 31, a sludge pump 32, and a deep treatment component 33. The sludge outlet of the secondary sedimentation tank 22 is connected to the sludge collection tank 31. The sludge pump 32 is installed in the sludge collection tank 31 and discharges the sludge from the sludge collection tank 31 into the deep treatment component 33, where the deep treatment component 33 degrades the sludge.

[0049] According to some embodiments of this application, please refer to Figures 1 to 5 This embodiment relates to a biodegradable sludge treatment device, including a pretreatment unit 1, a microbial treatment unit 2, and a digestion treatment unit 3. The pretreatment unit 1 pretreats the wastewater. The microbial treatment unit 2 includes a microbial treatment component 21 and a secondary sedimentation tank 22. The microbial treatment component 21 purifies the pretreated wastewater. The outlet of the microbial treatment component 21 is connected to the secondary sedimentation tank 22, which discharges the supernatant and settles the sludge. The digestion treatment unit 3 includes a sludge collection tank 31, a sludge pump 32, and a deep treatment component 33. The sludge outlet of the secondary sedimentation tank 22 is connected to the sludge collection tank 31. The sludge pump 32 is installed in the sludge collection tank 31 and discharges the sludge from the sludge collection tank 31 into the deep treatment component 33, where the deep treatment component 33 degrades the sludge.

[0050] The bottom of the secondary sedimentation tank 22 is sloping bucket-shaped to facilitate sedimentation. Optionally, a first vertical flow pipe 221 is installed inside the secondary sedimentation tank 22, and the inlet of the first vertical flow pipe 221 is connected to the outlet of the microbial treatment component 21. In some embodiments, a sixth overflow trough 222 is also installed inside the secondary sedimentation tank 22, through which the purified water can be discharged or subjected to further advanced treatment.

[0051] Unlike existing technologies, the technical solution of this application can purify wastewater through a pretreatment unit 1 and a microbial treatment unit 2, and degrade the sludge after sedimentation through a digestion treatment unit 3, thereby reducing the total amount of sludge by more than 90%, reducing the amount of sludge that needs to be incinerated or landfilled, and thus reducing environmental pollution.

[0052] like Figure 1 and Figure 2 The deep treatment component 33 includes an anaerobic digester 3311, a first three-phase separator 3312, and a first overflow trough 3313. The sludge pump 32 discharges sludge from the sludge collection tank 31 into the anaerobic digester 3311. The first three-phase separator 3312 and the first overflow trough 3313 are installed in the anaerobic digester 3311.

[0053] Thus, the sludge is smoothly separated into gas, liquid, and solid by the first three-phase separator 3312. The generated gas is methane, which can be used for power generation. The solid settles, and the upper liquid can be discharged through the first overflow tank 3313. In addition, soil conditioner and anaerobic bacteria can also be produced as byproducts in the anaerobic digester 3311. The anaerobic bacteria can be used for wastewater treatment commissioning and introduction.

[0054] like Figure 1 and Figure 2 The deep treatment component 33 also includes a first microbial enhancement plate 3314, which is installed inside the anaerobic digester 3311.

[0055] Thus, the addition of the first microbial enhancement plate 3314 can enhance the metabolic efficiency of microorganisms. In particular, it can accelerate the conversion of organic matter into methane in the anaerobic digester 3311, and also prevent sludge caking, maintaining the efficient operation of the first three-phase separator 3312.

[0056] like Figure 1 and Figure 2 The deep treatment component 33 also includes an aerobic digester 3321, a first aeration disc 3322, a blower 3323, and a second overflow trough 3324. The outlet of the first overflow trough 3313 is connected to the aerobic digester 3321. The first aeration disc 3322 is installed inside the aerobic digester 3321. The outlet of the blower 3323 is connected to the aerobic digester 3321. The second overflow trough 3324 is installed inside the aerobic digester 3321.

[0057] Thus, blower 3323 primarily supplies air to the first aeration disc 3322, which achieves efficient oxygen transfer and mixing. By extending the aeration time, the first aeration disc 3322 promotes microorganisms into the endogenous respiration stage, meaning that after the substrate is depleted, the microorganisms begin to decompose their own cellular material, thereby significantly reducing the production of excess sludge. The upper mixed liquor can be discharged through the second overflow trough 3324. Furthermore, aerobic bacterial agents and soil conditioners can also be produced as byproducts in the aerobic digester 3321.

[0058] like Figure 1 and Figure 2 The biodegradable sludge treatment device also includes a first sludge concentration detector 3325, which is installed in the aerobic digestion tank 3321. The first sludge concentration detector 3325 detects the sludge concentration in the aerobic digestion tank 3321 and is communicatively connected to the blower 3323.

[0059] Thus, by communicating with the first sludge concentration detector 3325 and the blower 3323, the air supply volume or air supply time of the blower 3323 can be adjusted according to the sludge concentration detected by the first sludge concentration detector 3325, so as to adjust the aeration volume or aeration time of the first aeration disc 3322.

[0060] like Figure 1 and Figure 2 The deep treatment component 33 also includes an anoxic digester 3331 and a third overflow trough 3332. The outlet of the second overflow trough 3324 is connected to the anoxic digester 3331, and the third overflow trough 3332 is installed inside the anoxic digester 3331.

[0061] The anoxic digester 3331 is also equipped with a second vertical flow pipe 3333, the inlet of which is connected to the outlet of the second overflow trough 3324. Optionally, the bottom of the anoxic digester 3331 is sloping bucket-shaped to facilitate sedimentation.

[0062] Thus, a micro-aerobic environment is created in the facultative digester 3331, enabling simultaneous nitrogen removal through short-cut nitrification and denitrification, reducing carbon source addition by 50%-60%. The supernatant can be discharged through the third overflow tank 3332. In addition, facultative anaerobic bacteria and soil conditioners can also be produced as byproducts in the facultative digester 3331.

[0063] like Figure 1 and Figure 2 The outlet of the third overflow tank 3332 is connected to the microbial treatment unit 2.

[0064] In this way, the supernatant in the anaerobic digester 3331 can be returned to the microbial treatment unit 2 through the third overflow channel 3332, thereby improving the utilization of sludge and further degrading the sludge. In addition, it can also replenish active microorganisms and reduce the cost of exogenous bacterial agents.

[0065] like Figure 5 As shown, the biodegradable sludge treatment device also includes a PCL control mechanism 4, which is communicatively connected to the pretreatment mechanism 1, the microbial treatment mechanism 2, and the digestion treatment mechanism 3.

[0066] The PCL control system allows for adjustable aeration rates (0.1-0.3 m³ / s). 3 The system controls the aeration rate (50-100 rpm) and stirring speed (50-100 rpm), monitors COD, ammonia nitrogen, and pH in real time, and feeds these values ​​back to the neural network model to achieve delayed aeration and reduce sludge production.

[0067] Thus, the PCL control mechanism 4 includes a variable frequency speed-regulating water pump 13, an aeration device, pH, dissolved oxygen, sludge concentration, fuzzy algorithm, edge computing nodes and neural network algorithm model, to realize real-time monitoring and adjustment of water quality parameters.

[0068] like Figure 1 and Figure 3 As shown, the pretreatment mechanism 1 includes a bar screen 11, an equalization tank 12, a water pump 13, an electromagnetic flow meter 14, and a grit chamber 15. The outlet of the bar screen 11 is connected to the equalization tank 12. The water pump 13 is installed in the equalization tank 12. The water pump 13 pumps the liquid in the equalization tank 12 to the grit chamber 15 through the electromagnetic flow meter 14. The outlet of the grit chamber 15 is connected to the microbial treatment mechanism 2.

[0069] Bar screen 11: It adopts a stepped coarse and fine bar screen (coarse bar spacing 10mm, fine bar spacing 3mm) to intercept suspended matter (such as plastic and fiber).

[0070] Equalization tank 12: Equipped with a liquid level sensor and a variable frequency water pump 13, the influent flow rate is precisely controlled by an electromagnetic flow meter 14 (error < ±2%), and the hydraulic retention time (HRT = 4-6h) is adjusted.

[0071] Grit chamber 15: Cyclone grit settling device (surface load 120m) 3 / (m 2 •h)) Remove density >2.65g / cm³ 3 Inorganic sand particles. Optionally, the inorganic sand particles settled in the grit chamber 15 can be further processed by the sand-water separator 16.

[0072] Thus, the bar screen 11 can effectively intercept large particles of impurities and sand, preventing clogging or wear of the subsequent microbial treatment unit 2. The equalization tank 12 balances water quality and quantity, reduces shock loads (such as COD fluctuations within ±15%), and improves the stability of the subsequent biological treatment unit.

[0073] like Figure 1 and Figure 4 As shown, the microbial treatment component 21 includes a first AHBBR tank 211, a second AHBBR tank 212, an OHBBR tank 213 arranged in series, and microbial material 214. The pretreatment mechanism 1 is connected to the first AHBBR tank 211. Microbial material 214 is provided in the first AHBBR tank 211, the second AHBBR tank 212, and the OHBBR tank 213. The outlet of the OHBBR tank 213 is connected to the secondary sedimentation tank 22.

[0074] The first AHBBR tank 211 (anaerobic high-load biofilm reactor) is also equipped with a circulation pump 2111, a fourth overflow tank 2112, and a second three-phase separator 2113. The second three-phase separator 2113 smoothly separates wastewater into gas, liquid, and solid phases. The generated gas is methane, which can be used for power generation. The solids settle. During this process, the circulation pump 2111 pumps the bottom sediment to the middle of the first AHBBR tank 211, allowing the bottom sediment to interact with the microbial material 214, enhancing the degradation of sludge by the microbial material 214. The supernatant overflows into the second AHBBR tank 212 through the fourth overflow tank 2112.

[0075] The second AHBBR tank 212 (anoxic high-load biofilm reactor) is also equipped with a stirrer 2121, a second sludge concentration detector 2122, and a fifth overflow tank 2123. The stirrer 2121 mixes the sludge to enhance denitrification. The second sludge concentration detector 2122 measures the sludge concentration within the second AHBBR tank 212. The supernatant overflows into the OHBBR tank 213 through the fifth overflow tank 2123.

[0076] The OHBBR tank 213 (aerobic high-load biofilm reactor) is also equipped with inclined plates 2132, a second aeration disc 2131, a third sludge concentration meter 2133, and a dissolved oxygen concentration meter 2134. The inclined plates 2132 enhance biofilm adhesion and microbial enrichment, and also extend the hydraulic retention time, preventing short-circuiting or dead zones. The blower 3323 supplies air to the second aeration disc 2131, enabling efficient oxygen transfer and mixing. The third sludge concentration meter 2133 and the dissolved oxygen concentration meter 2134 respectively detect the sludge concentration and dissolved oxygen concentration in the OHBBR tank 213.

[0077] Microbial material 214 includes suspended packing material, wherein the specific surface area of ​​the suspended packing material is >4000 m². 2 / m 3 This refers to the enrichment and diversification of microbial communities. The suspended filler can be polyurethane biomass-increasing sponge (APG), with a specific surface area >3000 m². 2 / m 3 The hydrophilic settling velocity is <10 seconds. In some embodiments, the microbial material 214 further includes microbial strains (which may include nitrifying bacteria, denitrifying bacteria and recalcitrant organic matter decomposing bacteria, with a strain density ≥5 billion CFU / g) and / or microbial synergists and / or activity promoters.

[0078] The purpose of adopting the "AHBBR-OHBBR" wastewater treatment process is to improve wastewater treatment efficiency and reduce sludge volume (which can be reduced by 30-50%).

[0079] Thus, through a coupled process of "anaerobic (first AHBBR tank 211) - anoxic (second AHBBR tank 212) - aerobic (OHBBR tank 213)," efficient removal of carbon, nitrogen, and phosphorus is achieved simultaneously (TP removal rate >80%), avoiding the limitations of a single treatment mode. Furthermore, sludge production is reduced; specifically, the anaerobic stage degrades macromolecular organic matter, reducing the proliferation of microorganisms in the subsequent aerobic stage, resulting in a 30%-50% reduction in sludge volume.

[0080] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A biodegradable sludge treatment device, characterized in that, include: A pretreatment unit is used to pretreat wastewater; A microbial treatment facility includes a microbial treatment component and a secondary sedimentation tank. The microbial treatment component purifies the pretreated wastewater. The outlet of the microbial treatment component is connected to the secondary sedimentation tank, which discharges the supernatant and settles the sludge. The digestion and treatment unit includes a sludge collection tank, a sludge pump, and a deep treatment component. The sludge outlet of the secondary sedimentation tank is connected to the sludge collection tank. The sludge pump is installed in the sludge collection tank and discharges the sludge from the sludge collection tank into the deep treatment component, which degrades the sludge.

2. The biodegradable sludge treatment device according to claim 1, characterized in that, The advanced treatment assembly includes an anaerobic digester, a first three-phase separator, and a first overflow trough. The sludge pump discharges sludge from the sludge collection tank into the anaerobic digester. The first three-phase separator and the first overflow trough are installed inside the anaerobic digester.

3. The biodegradable sludge treatment device according to claim 2, characterized in that, The deep processing component also includes a first microbial enhancement plate, which is installed inside the anaerobic digester.

4. The biodegradable sludge treatment device according to claim 2, characterized in that, The advanced treatment assembly also includes an aerobic digester, a first aeration disc, a blower, and a second overflow trough. The outlet of the first overflow trough is connected to the aerobic digester. The first aeration disc is installed inside the aerobic digester. The outlet of the blower is connected to the aerobic digester. The second overflow trough is installed inside the aerobic digester.

5. The biodegradable sludge treatment device according to claim 4, characterized in that, The biodegradable sludge treatment device also includes a first sludge concentration detector, which is installed in the aerobic digestion tank and detects the sludge concentration in the aerobic digestion tank. The first sludge concentration detector is communicatively connected to the blower.

6. The biodegradable sludge treatment device according to claim 4, characterized in that, The advanced treatment component also includes an anoxic digester and a third overflow trough. The outlet of the second overflow trough is connected to the anoxic digester, and the third overflow trough is installed inside the anoxic digester.

7. The biodegradable sludge treatment device according to claim 6, characterized in that, The outlet of the third overflow tank is connected to the microbial treatment mechanism.

8. The biodegradable sludge treatment apparatus according to any one of claims 1 to 7, characterized in that, The biodegradable sludge treatment device also includes a PCL control mechanism, which is communicatively connected to the pretreatment mechanism, the microbial treatment mechanism, and the digestion treatment mechanism.

9. The biodegradable sludge treatment device according to claim 1, characterized in that, The pretreatment mechanism includes a bar screen, a regulating tank, a water pump, an electromagnetic flow meter, and a sedimentation tank. The outlet of the bar screen is connected to the regulating tank. The water pump is installed in the regulating tank and pumps the liquid in the regulating tank to the sedimentation tank through the electromagnetic flow meter. The outlet of the sedimentation tank is connected to the microbial treatment mechanism.

10. The biodegradable sludge treatment device according to claim 1, characterized in that, The microbial treatment component includes a first AHBBR tank, a second AHBBR tank, an OHBBR tank arranged in series, and microbial materials. The pretreatment mechanism is connected to the first AHBBR tank. The microbial materials are provided in the first AHBBR tank, the second AHBBR tank, and the OHBBR tank. The outlet of the OHBBR tank is connected to the secondary sedimentation tank.

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