A solid-liquid separation device for sewage treatment

Abstract

The present application relates to sewage separation technical field, disclose a kind of solid-liquid separation equipment for sewage treatment, including separation casing, the side of separation casing is provided with water inlet pipe, the end in separation casing is provided with water inlet grid, separation casing is sequentially provided with anaerobic tank, biological pool and equipment room, anaerobic tank is connected with water inlet pipe, overflow inlet is connected between the top of anaerobic tank and biological pool.The present application is by biological membrane reactor as processing means, utilize ultrafiltration membrane to carry out solid phase impurity interception to sewage, a plurality of separation membranes are provided on biological membrane reactor, plug-in connector is provided on MBR separation module, the position of plug-in connector can be adjusted, and then correspondingly connected using plug-in connector and plug-in interface, so that separation membrane is connected with plug-in connector and plug-in hole one-to-one, linearly arranged on negative pressure pipeline, by detecting water level in biological pool, control the number of ultrafiltration membranes involved, control accurate and fast, save resources.

Description

Technical Field

[0001] This invention relates to the field of wastewater separation technology, specifically to a solid-liquid separation device for wastewater treatment. Background Technology

[0002] Water resources are an important resource for human survival. To conserve water, wastewater treatment is an important means of water conservation. At present, there are many wastewater treatment methods, but in essence, the wastewater treatment process is a separation process. During the wastewater treatment process, most impurities and harmful substances are in solid form. Some require the addition of flocculants to flocculate particulate matter and harmful substances before separation.

[0003] Therefore, the most common principle in current wastewater treatment equipment is the separation of solid and liquid phases. Among them, MBR technology, or membrane bioreactor, is a common solid-liquid separation method in wastewater treatment. It uses hollow fiber membranes to replace the secondary sedimentation tank in the activated sludge process for solid-liquid separation. It makes full use of the membrane's high-efficiency retention capacity, effectively retaining nitrifying bacteria and keeping them completely in the bioreactor, ensuring the smooth progress of the nitrification reaction, effectively removing ammonia nitrogen, avoiding sludge loss, and retaining large molecular organic matter that is difficult to degrade in a short time, extending its residence time in the reactor and allowing it to be decomposed to the maximum extent.

[0004] However, in the current solid-liquid separation process of MBR, one of the main technical features of MBR is that it can control the number of modules involved in the treatment to process the corresponding water volume. At present, most treatment systems control the opening of the corresponding MBR modules according to the water flow rate. However, this means that the MBR modules need to be controlled and changed according to the water volume when they are introduced. At present, the corresponding MBR module is only started after the system has measured it, which causes a lag in the use of MBR modules. At the same time, it is impossible to accurately control the number of membranes involved in the treatment of the MBR module according to the influent flow rate, resulting in the existence of membrane separation modules in a critical state during use. In view of this, in-depth research was conducted on the above problems, which led to this case. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a solid-liquid separation device for wastewater treatment, which solves the problems in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a solid-liquid separation device for sewage treatment, comprising a separator housing, an inlet pipe provided on one side of the separator housing, an inlet grid provided at one end of the separator housing, an anaerobic tank, a biological tank and an equipment room arranged sequentially inside the separator housing, the anaerobic tank being connected to the inlet pipe, and an overflow inlet being connected between the top of the anaerobic tank and the biological tank;

[0007] The biological tank is equipped with a separation and recovery pipe and at least three installation stations. Each installation station is equipped with an MBR separation module. The installation station and the MBR separation module are connected by a lifting installation component. An aeration component is installed on the top of the biological tank and connected to the MBR separation module. The MBR separation module is equipped with several separation membranes, and the several separation membranes are connected to the separation and recovery pipe respectively.

[0008] A coaxial controller is provided on one side of the separation and recovery tube, and a sealing seat is installed inside the separation and recovery tube. The coaxial controller is linked with the sealing seat to control the axial position of the sealing seat inside the separation and recovery tube and control the number of separation membranes that are intervened for recovery.

[0009] The equipment room is equipped with a negative pressure water pump, a water storage tank is connected to one side of the negative pressure water pump, the negative pressure water pump is connected to the separation and recovery pipe, the water storage tank is used to hold the purified water separated by the separation and recovery pipe, the equipment room is equipped with a backwash pump, the backwash pump is connected to the separation and recovery pipe, a dosing pump is connected to one side of the backwash pump, and a dosing tank is connected to one side of the dosing pump.

[0010] The biological tank is equipped with a liquid level detector, which detects the liquid level height in the biological tank. The liquid level detector is connected to a coaxial controller, and the coaxial controller is controlled to move according to the liquid level height detected by the liquid level detector, so that the coaxial controller drives the sealing seat to move. The sealing seat is a cylindrical piston and matches the inner diameter of the separation and recovery pipe.

[0011] The MBR separation module includes a separation frame, which is a rectangular frame. Several separation membranes are arranged in a linear array on the separation frame. Several capillaries are connected to the top of the separation membranes. The ends of the capillaries are connected to connectors. A connector is provided on one side of the separation recovery tube, and the connector is connected to the connector.

[0012] The connector has several tapered plugs protruding from one side, which are connected to several capillary tubes. The connector interface is connected to the connector, and the connector interface has several sockets that match the several plugs. The connector is fitted onto the several capillary tubes and connected to the connector interface by tie bolts. The connector interface has a guide bevel on the side corresponding to the connector interface, and the connector interface has a socket corresponding to the guide bevel on its inner side.

[0013] The coaxial controller includes a linear control module, which is integrally mounted on the upper part of the separation and recovery pipe. A connecting block is provided on the sliding end of the linear control module, and a traction belt is provided on the connecting block. The end of the traction belt is connected to the sealing seat. The linear control module includes a guide seat, which is integrally mounted on the separation and recovery pipe. A guide groove is provided inside the guide seat, and a guide screw is assembled inside the guide groove. A guide motor is connected to the end of the guide screw, and a guide block is threaded onto the guide screw. The guide block is connected to the traction belt, which is a steel cable. A guide hole is provided at the head end of the guide groove, and the traction belt passes through the guide hole and connects to the sealing seat.

[0014] The lifting and installation assembly includes an installation guide rail. An installation guide rail is provided on the side wall of the installation station. A sliding block is mounted on the installation guide rail. A guide rail frame is provided on the sliding block. A lifting seat is provided on the top of the installation station. A traction seat is mounted on the lifting seat. A gear set is provided inside the traction seat. An adjusting gear is provided at the output end of the gear set. A rack is provided on the guide rail frame to mesh with the adjusting gear.

[0015] One end of the separation and recovery pipe is provided with a connecting flange for connection to a negative pressure water pump, and the other end of the separation and recovery pipe is provided with a guide seat, which has a sealing sleeve hole that matches the traction belt.

[0016] The aeration assembly includes an aeration inlet pipe, which is provided on the separation frame. A diversion pipe network is connected to the aeration inlet pipe, and a plurality of aeration heads are provided on the diversion pipe network. An air inlet flange is provided on the aeration inlet pipe, and an aeration pipe is connected to the air inlet flange. An aeration fan is connected to the end of the aeration pipe.

[0017] The liquid level detector is a radar liquid level gauge, and a fixing plate is provided on the biological pool for fixing the radar liquid level gauge.

[0018] A separation adsorber is installed on one side of the negative pressure water pump, and the separation adsorber is filled with several porous activated carbon adsorption blocks.

[0019] Beneficial effects

[0020] This invention provides a solid-liquid separation device for wastewater treatment. It offers the following advantages: Utilizing a biofilm reactor as the treatment method, it employs ultrafiltration membranes to retain solid impurities in the wastewater. Multiple separation membranes are installed on the biofilm reactor, and the MBR separation module is equipped with connectors whose positions are adjustable. The connectors are then connected to the corresponding interfaces, allowing the separation membranes to be linearly arranged on a negative pressure pipeline through a one-to-one correspondence between the connectors and the connecting holes. By detecting the water level in the biological tank, the number of ultrafiltration membranes is controlled, resulting in precise and rapid control and resource conservation. Specifically, it offers the following advantages:

[0021] 1. The MBR separation module uses a connector that corresponds to the interface of the separation and recovery tube. Multiple plugs are set on the connector to connect with the capillary tube, which in turn connects with the docking hole. Under negative pressure, water flows into the separation and recovery tube through the plug. The negative pressure is directly connected to the ultrafiltration membrane through the capillary tube, resulting in better suction effect.

[0022] 2. Multiple installation stations are set up in the biological tank. MBR separation modules are installed at the installation stations. The installation stations are equipped with lifting installation components to facilitate the lifting and adjustment of the MBR separation modules, making inspection and maintenance convenient.

[0023] 3. Several docking holes are arranged in a linear array on the separation and recovery pipe along its axial direction. A coaxial controller is installed on the separation and recovery pipe to control the position of the sealing seat and directly control the number of separation membranes participating in the ultrafiltration process. Instead of measuring the influent and effluent flow, the number of separation membranes participating in the ultrafiltration process is directly controlled based on the liquid level in the biological tank, resulting in more precise and faster control. Attached Figure Description

[0024] Figure 1 This is a first three-dimensional structural schematic diagram of a solid-liquid separation device for wastewater treatment according to the present invention.

[0025] Figure 2 This is a second three-dimensional structural schematic diagram of a solid-liquid separation device for wastewater treatment according to the present invention.

[0026] Figure 3 This is a top view of the solid-liquid separation device for wastewater treatment according to the present invention.

[0027] Figure 4 This is a partial three-dimensional structural diagram of a solid-liquid separation device for wastewater treatment according to the present invention.

[0028] Figure 5 This is a schematic diagram of the coaxial controller structure of a solid-liquid separation device for wastewater treatment according to the present invention.

[0029] Figure 6 This is a partial cross-sectional view of the solid-liquid separation device for wastewater treatment according to the present invention.

[0030] Figure 7 This is a schematic diagram of the MBR separation module structure of a solid-liquid separation device for wastewater treatment according to the present invention.

[0031] Figure 8 This is a partially enlarged structural schematic diagram of a solid-liquid separation device for wastewater treatment according to the present invention.

[0032] In the diagram: 1. Separator casing; 2. Anaerobic tank; 3. MBR separation module; 4. Coaxial controller; 5. Liquid level detector; 6. Biological tank; 7. Equipment room; 8. Lifting and mounting assembly; 11. Inlet pipe; 12. Inlet bar; 31. Separation frame; 32. Separation membrane; 33. Capillary tube; 34. Connector; 35. Socket; 41. Separation recovery pipe; 42. Linear control module; 43. Connecting block; 44. Traction belt; 45. Sealing seat; 61. Overflow inlet; 62. Aeration assembly; 71. Negative pressure pump; 72. Storage tank; 73. Backwash pump; 74. 75. Dosing pump; 76. Storage tank; 87. Separator and adsorber; 88. Mounting rail; 89. Sliding block; 80. Rail frame; 81. Lifting seat; 82. Traction seat; 83. Gear set; 84. Adjusting gear; 85. Rack; 36. Connecting plug; 37. Guide bevel; 38. Socket; 39. Connecting hole; 40. Connecting flange; 41. Conductor seat; 42. Guide seat; 42. Guide groove; 42. Guide screw; 42. Guide motor; 42. Guide block; 62. Aeration inlet pipe; 62. Diversion network; 62. Air inlet flange. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-8 This invention provides an implementation scheme: In modern wastewater treatment processes, solid-liquid separation is a common wastewater treatment method. However, in modern wastewater treatment equipment, MBR (Membrane Bioreactor) is a common solid-liquid separation method. Currently, MBR separation methods often integrate multiple separation membranes 32 onto a membrane frame, and then use all the separation membranes 32 on this membrane frame as a unified separation unit to participate in the biological wastewater treatment reaction process. However, this method requires matching the wastewater treatment volume to control the number of MBR separation modules 3 involved in the reaction. However, this reaction method often controls the number of wastewater reaction modules involved based on the influent volume. However, due to the lag between detecting and activating the number of MBR separation modules 3, unstable treated water quality is easily generated. At the same time, due to the problem of membrane pore blockage, monitoring only the influent and effluent volumes also has a lag, which cannot effectively ensure the stability of the treated water level in the biological tank 6, and also easily leads to unstable wastewater separation.

[0035] To address the above issues, please refer to the appendix to the instruction manual. Figure 1-8This application discloses a solid-liquid separation device for wastewater treatment, specifically including a separator casing 1. The separator casing 1 is installed using a skid-mounted method, serving as the external skid-mounted main body of the solid-liquid separation device for easy hoisting and use. An inlet pipe 11 is provided on one side of the separator casing 1, and an inlet grille 12 is provided at one end inside the separator casing 1. An anaerobic tank 2, a biological tank 6, and an equipment room 7 are sequentially arranged inside the separator casing 1. The anaerobic tank 2 is connected to the inlet pipe 11, and the inlet grille 12 is arranged in the anaerobic tank 2. After entering the anaerobic tank 2 through the inlet pipe 11, the inlet screen 12 intercepts large solid debris in the sewage. Then, the top of the anaerobic tank 2 is connected to the biological tank 6 by an overflow inlet 61. In the anaerobic tank 2, some suspended solid debris settles to the bottom of the anaerobic tank 2 under the action of gravity and accumulates at the bottom of the anaerobic tank 2. The water in the anaerobic tank 2 rises further to the side of the overflow inlet 61 and is introduced into the side of the biological tank 6 from the overflow inlet 61. Then, in the biological tank 6, ultrafiltration and biodegradation are carried out using a biofilm reactor.

[0036] Specifically, the biological tank 6 is equipped with a separation and recovery pipe 41, which serves as an integrated water collection device. The separation and recovery pipe 41 is connected to the biofilm reactor. The biological tank 6 has at least three installation positions for installing the biofilm reactor. Each installation position has an MBR separation module 3, which is the biofilm reactor. The installation position is connected to the MBR separation module 3 via a lifting installation component 8, which facilitates the lifting and height adjustment of the MBR separation module 3. An aeration component 62 is installed on the top of the biological tank 6 and connected to the MBR separation module 3. The MBR separation module 3 contains several separation membranes 32, which are connected to the separation and recovery pipe 41. The separation membranes 32 adopt an ultrafiltration membrane structure. Through the ultrafiltration effect of the separation membranes 32, the separated water enters the separation and recovery pipe 41. The separation and recovery pipe 41 is further connected to the negative pressure water pump 71 in the equipment room 7 to collect and discharge the separated water.

[0037] According to the instruction manual Figure 3-4 It is known that a coaxial controller 4 is provided on one side of the separation and recovery tube 41, and a sealing seat 45 is installed inside the separation and recovery tube 41. The coaxial controller 4 is linked with the sealing seat 45. The coaxial controller 4 controls the number of separation membranes 32 that are intervened for recovery by controlling the axial position of the sealing seat 45 inside the separation and recovery tube 41.

[0038] Then, according to the instruction manual attached Figure 1-2It is known that a negative pressure water pump 71 is installed in the above-mentioned equipment room 7. A water storage tank 72 is connected to one side of the negative pressure water pump 71. The negative pressure water pump 71 is connected to the separation and recovery pipe 41. The negative pressure water pump 71 generates negative pressure suction, so that the separation and recovery pipe 41 is in a negative pressure state. Then, under the action of the negative pressure water pump 71, water is pumped into the water storage tank 72. The water storage tank 72 is used to hold the purified water separated by the separation and recovery pipe 41. A separation adsorber 76 is installed on one side of the negative pressure water pump 71. The separation adsorber 76 is filled with several porous activated carbon adsorption blocks. The separation adsorber 76 is a permeable buffer container. The activated carbon adsorption blocks filled in it can guide and adsorb the tiny impurities remaining in the separated water.

[0039] To maintain the operating efficiency of the separation membrane 32 and prevent clogging of the separation membrane 32 from affecting the efficiency of recovery and separation, a backwash pump 73 is installed in the equipment room 7. The backwash pump 73 is connected to the separation and recovery pipe 41. The backwash pump 73 introduces backwash water into the MBR separation module 3 to flush the MBR module, remove the particles that clog the ultrafiltration pores, and maintain the water flux of the separation membrane 32. Furthermore, a chemical dosing pump 74 is connected to one side of the backwash pump 73, and a chemical storage tank 75 is connected to one side of the chemical dosing pump 74. The chemical storage tank 75 stores agents such as sodium hypochlorite or citric acid. These agents can effectively decompose pollutants on the membrane surface, kill bacteria, and restore the water flux of the separation membrane 32.

[0040] To address the aforementioned issue of influent control lag, a level detector 5 is installed within the biological tank 6. This detector detects the liquid level within the biological tank 6, and the data from the level detector 5 is processed in real-time by a controller to control a coaxial controller 4. The coaxial controller 4 is connected to a sealing seat 45. Based on the liquid level detected by the level detector 5, the coaxial controller 4 is moved, causing it to move the sealing seat 45. The sealing seat 45 is a cylindrical piston that matches the inner diameter of the separation and recovery pipe 41. Under the action of the coaxial controller 4, the sealing seat 45 is positioned at different axial positions within the separation and recovery pipe 41, thereby changing the number of MBR separation membranes 32 that can be connected to the negative pressure pump 71.

[0041] According to the instruction manual Figure 5-6 As can be seen, the above-mentioned MBR separation module 3 includes a separation frame 31, which is a rectangular frame. Several separation membranes 32 are arranged in a linear array on the separation frame 31. Several capillary tubes 33 are connected to the top of the separation membranes 32. The ends of the capillary tubes 33 are connected to the connectors 34. An interface 35 is provided on one side of the separation recovery tube 41, and the interface 35 is connected to the connector 34.

[0042] In the specific implementation process, the separation membrane 32 is an ultrafiltration membrane. The separation membrane 32 itself is framed by a rectangular frame structure and arranged in a linear array on the separation frame 31. Through the ultrafiltration effect of the separation membrane 32, water in the wastewater is separated, while small-particle solids are retained. Then, the water in the separation membrane 32 participating in the ultrafiltration process enters the separation recovery pipe 41 through the capillary tube 33 connected to the ultrafiltration membrane. Under the action of capillary action and negative pressure, the water in the separation membrane 32 participating in the ultrafiltration process enters the separation recovery pipe 41 through the capillary tube 33. Unlike current biofilm reactors that only have one outlet, this application designs a novel connector 35 and connector 34. With the cooperation of the connector 35 and connector 34, each capillary 33 is individually connected to the separation and recovery pipe 41. In this way, during the separation process, the number of membranes participating in the reaction can be precisely controlled by the coaxial controller 4. On the one hand, the biofilm reaction is more precise, and on the other hand, the number of idling biofilms can be reduced, avoiding the direct connection of biofilm reactors into the separation frame 31, which would result in the overuse of some biofilm reactors.

[0043] According to the instruction manual Figure 5-6 It can be seen that a number of tapered mating plugs 341 are provided on one side of the above-mentioned plug 34. The number of mating plugs 341 are connected to a number of capillary tubes 33. The plug interface 35 is connected to the plug 34. The plug interface 35 is provided with a number of sockets that match the number of mating plugs 341. The plug 34 is fitted onto a number of capillary tubes 33 and is connected to the plug interface 35 by tie bolts. The plug 34 is provided with a guide bevel 342 on one side corresponding to the plug interface 35. The plug interface 35 is provided with a socket 351 corresponding to the guide bevel 342 on the inner side.

[0044] In the specific implementation process, the connector 34 is a rectangular block structure. The connector 34 is connected to several capillary tubes 33 and can move telescopically on the capillary tubes 33. The connector 34 specifically corresponds to the interface 35. The interface 35 is provided with several docking holes 352, which are matched with several docking plugs 341. Each docking plug 341 corresponds to a capillary tube 33. When the MBR separation module 3 moves into place, the connector 34 is moved and inserted into the interface 35, so that the socket 351 of the interface 35 is in full contact with the guide slope 342 of the connector 34 and locked with bolts. This allows the docking plug 341 to be inserted into the docking hole 352, so that the water inlet of the separation membrane 32 and the separation recovery pipe 41 are connected one by one, ensuring the water inlet effect.

[0045] Then, according to the instruction manual attached Figure 7-8It can be seen that the coaxial controller 4 mentioned above includes a linear control module 42. The linear control module 42 is integrally provided on the upper part of the separation and recovery tube 41. A connecting block 43 is provided on the sliding end of the linear control module 42. A traction belt 44 is provided on the connecting block 43. The end of the traction belt 44 is connected to the sealing seat 45.

[0046] In the specific implementation process, the level detector 5 is a radar level gauge, and a fixing plate is set on the biological tank 6 for fixing the radar level gauge. The linear control module 42 on the separation and recovery pipe 41 serves as a linear motion control device. The linear control module 42 controls the movement of the connecting block 43, which in turn drives the traction belt 44 to move. Since the traction belt 44 is connected to the sealing seat 45, the sealing seat 45 moves within the separation and recovery pipe 41, causing the sealing seat 45 to stop at different positions within different separation and recovery pipes 41, resulting in different numbers of separation membranes 32 participating in the ultrafiltration process. The level detector 5 detects the water level in the biological tank 6, and the detection result of the level detector 5 is converted into a control signal to control the operation of the linear control module 42, thereby controlling the movement position of the sealing seat 45.

[0047] According to the instruction manual Figure 7-8 As can be seen, the above-mentioned linear control module 42 includes a guide seat 421, which is integrally mounted on the separation and recovery pipe 41. A guide groove 422 is provided inside the guide seat 421, and a guide screw 423 is assembled inside the guide groove 422. A guide motor 424 is connected to the end of the guide screw 423, and a guide block 425 is threadedly connected to the guide screw 423. The guide block 425 is connected to the traction belt 44, which is a steel cable. A guide hole is provided at the head end of the guide groove 422, and the traction belt 44 passes through the guide hole and connects to the sealing seat 45.

[0048] In the specific implementation process, the guide seat 421 is integrally set on the separation and recovery pipe 41. The guide seat 421 is provided with a guide groove 422. The guide motor 424 is controlled to rotate by the control signal, which in turn drives the guide screw 423 to rotate. This causes the guide screw 423 to mesh with the guide block 425, allowing the guide block 425 to slide in the guide groove 422. This causes the guide block 425 to drive the traction belt 44 to move. The traction belt 44 is further connected to the sealing seat 45 and moves together, causing the sealing seat 45 to move linearly within the separation and recovery pipe 41. One end of the separation and recovery pipe 41 is provided with a connecting flange 411 connected to the negative pressure water pump 71. The space between the connecting flange 411 and the sealing seat 45 is subjected to negative pressure. Because the plug interface 35 and the plug connector 34 correspond the diversion pipes one by one to the radial positions of the separation and recovery pipe 41, the sealing seat 425... 5. One side of the guide seat 412 of the separation pipe is blocked, and the other end of the separation recovery pipe 41 is also provided with a guide seat 412. The negative pressure does not reach the side of the guide seat 412, but the corresponding docking plug 341 near the connecting flange 411 is under negative pressure, allowing water to enter the separation recovery pipe 41 under negative pressure. The guide seat 412 is provided with a sealing sleeve hole that matches the traction belt 44. The guide seat 412 provides space for disassembly and assembly of the sealing seat 45. The sealing seat 45 can be removed by removing the guide seat 412 for easy maintenance. Since the separation membrane 32 in the MBR separation module 3 is not connected in a unit manner, but is arranged one-to-one along the axial direction on the separation recovery pipe 41, under the sealing effect of the sealing seat 45, only the capillary pores between the sealing seat 45 and the connecting flange 411 and the separation membrane 32 are working. The separation membrane 32 participating in the separation and fine filtration can be precisely controlled according to the water level.

[0049] According to the instruction manual Figure 3-4 It is understood that the above-mentioned lifting and installation assembly 8 includes an installation guide rail 81, an installation guide rail 81 is provided on the side wall of the installation station, a sliding block 82 is mounted on the installation guide rail 81, a guide rail frame 83 is provided on the sliding block 82, a lifting seat 84 is provided on the top of the installation station, a traction seat 85 is mounted on the lifting seat 84, a gear set 86 is provided inside the traction seat 85, an adjusting gear 87 is provided at the output end of the gear set 86, and a rack 88 is provided on the guide rail frame 83 to mesh with the adjusting gear 87.

[0050] In the specific implementation process, the sliding block 82 is limited by the installation guide rail 81. The lifting seat 84 is equipped with a traction seat 85, and the traction seat 85 is equipped with a gear set 86. The gear set 86 is composed of a reduction gear and a worm gear. Under the action of the gear set 86, the rotational torque of the adjusting gear 87 is increased, thereby making the adjusting gear 87 mesh with the rack 88 of the guide rail frame 83. Under the reverse force of the adjusting gear 87, the rack 88 drives the guide rail frame 83 to rise and fall. The sliding block 82 is located between the guide rail frame 83 and the installation guide rail 81 and plays a guiding and limiting role.

[0051] To improve the degradation effect of activated sludge, the aeration component 62 includes an aeration inlet pipe 621. The aeration inlet pipe 621 is installed on the separation frame 31, and a diversion pipe network 622 is connected to the aeration inlet pipe 621. Several aeration heads are installed on the diversion pipe network 622. An air inlet flange 623 is installed on the aeration inlet pipe 621, and an aeration pipe is connected to the air inlet flange 623. An aeration blower is connected to the end of the aeration pipe. The aeration blower compresses air into the aeration inlet pipe 621, and then the diversion effect of the diversion pipe network 622 is used to pump the air from the aeration heads into the biological tank 6, making the aeration more uniform. Through the contact between air and sewage sludge, the biological activity is improved, and the biodegradation efficiency is increased.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-liquid separation device for wastewater treatment, comprising a separator housing (1), wherein an anaerobic tank (2), a biological tank (6), and an equipment room (7) are sequentially arranged inside the separator housing (1), wherein the anaerobic tank (2) is connected to an inlet pipe (11), and the biological tank (6) is provided with at least one MBR separation module (3), characterized in that: The MBR separation module (3) includes multiple separation membranes (32), each separation membrane (32) being connected to a connector (34) via a capillary tube (33); The biological pool (6) is provided with a separation and recovery pipe (41), and the separation and recovery pipe (41) is provided with a plug interface (35) that connects with the plug connector (34). The separation and recovery tube (41) is provided with an axially movable sealing seat (45), which is used to control the number of separation membranes (32) participating in filtration. The biological pool (6) is equipped with a liquid level detector (5), which is connected to a coaxial controller (4) that drives the sealing seat (45) to move, and adjusts the position of the sealing seat (45) according to the liquid level.

2. A solid-liquid separation apparatus for sewage treatment according to claim 1, wherein The MBR separation module (3) includes a separation frame (31), the separation membrane (32) is arranged in a linear array on the separation frame (31), and the connector (34) is provided with multiple docking plugs (341), which correspond one-to-one with the docking holes (352) on the connector (35).

3. A solid-liquid separation apparatus for sewage treatment according to claim 1, wherein The coaxial controller (4) includes a linear control module (42), which is connected to the sealing seat (45) via a traction belt (44) and drives it to move axially within the separation and recovery tube (41).

4. A solid-liquid separation apparatus for sewage treatment according to claim 1, wherein The MBR separation module (3) is installed in the biological tank (6) by a lifting installation assembly (8), which includes a guide rail (81), a sliding block (82) and a gear lifting mechanism.

5. A solid-liquid separation apparatus for sewage treatment according to claim 1, wherein The equipment room (7) is equipped with: A negative pressure water pump (71) is connected to the separation and recovery pipe (41). Backwash pump (73) and chemical dosing pump (74) are used to backwash and chemically clean the separation membrane (32); Separator (76) with activated carbon adsorption blocks inside.

6. A solid-liquid separation apparatus for sewage treatment according to claim 1, wherein The biological tank (6) is equipped with an aeration assembly (62), which includes an aeration inlet pipe (621) and a branch pipe network (622) for supplying air to the MBR separation module (3).

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