Biological sewage treatment device and biological sewage treatment method

Abstract

The present application relates to water pollution prevention and control technical field, disclose a kind of biological sewage treatment device and biological sewage treatment method, including purification bin and decontamination pool, purification bin is fixedly installed at the top of decontamination pool, separation device is provided in purification bin, and drainage device and drainage device are provided in decontamination pool;Drive is provided on purification bin, separation device includes two stirring frames and filter cloth arranged in stirring frame, and pusher is provided in two stirring frames, and drainage device includes conveying belt, moves the moving part that conveying belt is moved and controls the sealing element that opening and closing between purification bin and decontamination pool.This application is separated and filtered to the solid sundries in sewage by the setting of stirring frame and filter cloth in purification bin, and the flocculation produced in the reaction of sewage and the solid sundries existing in itself are separated, solve the problem that residual heavy metal and organic pollutants in sewage after the treatment of sewage in aerobic tank can cause environmental damage to the water source where sewage needs to be discharged.

Description

Technical Field

[0001] This invention relates to the field of water pollution control technology, specifically to a biological wastewater treatment device and a biological wastewater treatment method. Background Technology

[0002] Aerobic digestion of sludge involves aerating sludge for an extended period without adding other organic matter, allowing microorganisms in the sludge to undergo endogenous respiration and self-oxidation. The mechanism of aerobic digestion depends on the type of sludge being treated. For primary sludge, the organic matter must be converted into microbially degradable dissolved organic matter through the action of biological enzymes, serving as energy and nutrients for the microorganisms. In aerobic digestion, due to the limited supply of organic matter, as oxidation continues, the microorganisms enter a period of decline. The organic matter to microbial mass ratio (F / M) in the aerated digester is relatively high, and a longer retention time is required to reach the stage where bacterial cytoplasmic destruction becomes dominant.

[0003] Even after aerobic treatment, if the original wastewater contains recalcitrant or toxic substances such as heavy metals and organic pollutants, these substances may still remain. The residual heavy metals and organic pollutants can cause environmental damage to the water source from which the wastewater needs to be discharged. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A biological wastewater treatment device includes a purification chamber and a decontamination tank. The purification chamber is fixedly installed on the top of the decontamination tank. A separation device is installed inside the purification chamber. A sewage discharge device and a drainage device are installed inside the decontamination tank.

[0006] The purification chamber is equipped with a driving component. The separation device includes two stirring frames and a filter cloth disposed in the stirring frames. When the purification chamber filters sewage, the driving component drives the two stirring frames to separate and rotates the two stirring frames simultaneously. The sewage in the purification chamber is stirred and filtered through the filter cloth. After the sewage in the purification chamber has fully reacted, the driving component drives the two stirring frames to move closer to each other and concentrates the reacted solid impurities in the purification chamber into the two stirring frames.

[0007] The two stirring frames are equipped with a pushing component. After the filtered water in the purification chamber is discharged, the driving component drives the pushing component to move downward and transport the solid debris in the two stirring frames to the decontamination tank.

[0008] The sewage discharge device includes a conveyor belt, a moving component that drives the conveyor belt to move, and a sealing component that controls the opening and closing between the purification chamber and the desiccation tank. The moving component drives the conveyor belt to move forward, causing the front end of the conveyor belt to move out of the desiccation tank. While the moving component drives the conveyor belt to move forward, it also drives the sealing component to operate, so that the purification chamber and the desiccation tank are connected. The solid debris carried by the pushing component is transported to the outside of the desiccation tank by the conveyor belt.

[0009] Preferably, a rotating rod is rotatably connected to the bottom axis of the purification chamber via a bearing, a central rod is fixedly connected to the top of the rotating rod, and a sleeve rod is sleeved around the outer periphery of the central rod. One of the stirring frames is fixedly installed on the outer periphery of the rotating rod, and the other stirring frame is fixedly installed on the outer periphery of the sleeve rod. When the two stirring frames overlap, they form a closed rectangular space.

[0010] Preferably, the driving component includes a first motor, which is fixedly mounted at the top axis of the purification chamber. The top of the central rod is rotatably connected to the inner wall of the top of the purification chamber via a bearing. The output end of the first motor is fixedly connected to the top of the central rod. A second motor is fixedly connected to the top of the purification chamber. A rotating block is rotatably connected to the top of the inner cavity of the purification chamber via a bearing. The output end of the second motor is fixedly connected to the rotating block. Gear grooves are provided on the outer periphery of the sleeve rod and the outer periphery of the rotating block. A toothed belt is fitted on the outer periphery of the sleeve rod and the outer periphery of the rotating block. The toothed belt is engaged with the rotating block and the sleeve rod through the tooth grooves.

[0011] Preferably, the pushing component includes a movable plate, a rectangular groove is provided on the inner wall of the stirring frame, the movable plate is disposed in the stirring frame and is slidably connected to the stirring frame through the rectangular groove, a pressing block is fixedly connected to the bottom of the movable plate, one side of the pressing block is attached to the filter cloth, a channel opening is provided at the bottom of the purification chamber, the cross-section of the space formed by the two stirring frames matches the cross-section of the channel opening, and the pressing block extends into the decontamination tank through the channel opening.

[0012] Preferably, the pushing component further includes a first gear, and a screw is rotatably connected to the rectangular groove on the side of the stirring frame near the inner wall of the purification chamber via a bearing. The screw is threadedly connected to the moving plate, and the top end of the screw extends to the top of the stirring frame. The first gear is rotatably connected to the top of the stirring frame via a bearing. The screw and the first gear are rotatably connected via a one-way bearing. A ring gear is fixedly connected to the inner wall of the purification chamber, and the first gear meshes with the ring gear.

[0013] Preferably, the sewage discharge device further includes partitions, rectangular plates are provided on both sides of the inner cavity of the sewage tank, two rectangular plates are rotatably connected to two conveyor rollers via bearings, the conveyor belt is sleeved on the two conveyor rollers, multiple partitions are evenly fixedly installed on the conveyor belt, a third motor is fixedly installed at one end of one of the rectangular plates, a connecting shaft is rotatably connected to one end of one of the rectangular plates via bearings, a bevel gear set that meshes with each other is fixedly connected between the connecting shaft and one of the conveyor rollers, the output end of the third motor is fixedly connected to one end of the connecting shaft, and a storage bin is installed on one side of the sewage tank.

[0014] Preferably, the moving part includes a threaded rod, the inner wall of the decontamination tank is provided with a sliding groove, a sliding block is fixedly connected to one side of the rectangular plate, the sliding block is slidably disposed in the sliding groove, the threaded rod is rotatably disposed in one of the sliding grooves through a bearing, the threaded rod is threadedly connected to one of the sliding blocks, a fourth motor is fixedly connected to one side of the decontamination tank, and the output end of the fourth motor is fixedly connected to one end of the threaded rod.

[0015] Preferably, the sealing element includes a sealing plate, and two rectangular plates are fixedly connected to the top of the vertical plates. The sealing plate is fixedly mounted on the two vertical plates, and the top of the sealing plate is in contact with the top of the inner cavity of the decontamination tank.

[0016] Preferably, the drainage device includes a drain pipe, one end of which is fixedly installed at the bottom of one side of the decontamination tank and communicates with the inner cavity of the decontamination tank, and the other end of which is fixedly installed on the purification chamber and communicates with the purification chamber. A water pump is installed on the drain pipe.

[0017] The biological wastewater treatment method utilizes a biological wastewater treatment device, and the specific steps are as follows:

[0018] The mixing and filtration process involves discharging the water from the sludge reaction tank into the purification chamber. Before the water enters the purification chamber, the two mixing frames are separated. After the water enters the purification chamber, a corresponding purifying agent is introduced. The driving component drives the two mixing frames to rotate simultaneously, thoroughly mixing the water in the purification chamber. This ensures that the water and the purifying agent come into full contact and react. Once the reaction is complete, impurities in the water combine with the purifying agent to form flocs, which are located between the two mixing frames. Simultaneously, the filter cloth filters and separates solid impurities from the water. The driving component then drives the two mixing frames to rotate relative to each other, gradually collecting the flocs and solid impurities in the water until the two mixing frames overlap. Finally, the purified water in the purification chamber is discharged.

[0019] After the wastewater in the purification chamber is discharged, the moving parts drive the conveyor belt forward, which in turn moves the sealing parts forward, connecting the purification chamber and the decontamination tank. The top of the conveyor belt is positioned at the connection point between the purification chamber and the decontamination tank. Then, the pushing parts move the solid waste in the two mixing frames downward and transport it to the decontamination tank, where it falls onto the conveyor belt. The solid waste is then discharged by the conveyor belt. Meanwhile, any wastewater that has not been completely discharged from the decontamination tank is transported back to the purification chamber for purification treatment through the drainage device.

[0020] Compared with the prior art, the present invention provides a biological wastewater treatment device and a biological wastewater treatment method, which have the following beneficial effects:

[0021] 1. A biological wastewater treatment device and method, comprising a mixing frame and a filter cloth in a purification chamber, wherein after wastewater is discharged into the purification chamber, the mixing frame and the filter cloth rotate simultaneously, and while stirring the wastewater, they separate and filter solid impurities in the wastewater, and isolate the flocculent matter generated by the reaction between the wastewater and the purifying agent. After the wastewater in the purification chamber has completely reacted, the purification chamber is emptied, and the two mixing frames are driven to move towards each other and overlap by a driving component, so that the solid impurities and flocculent matter in the wastewater are collected in the two mixing frames. This achieves the simultaneous purification of wastewater and separation of the flocculent matter generated by the reaction and the solid impurities present in the wastewater, solving the problem that residual heavy metals and organic pollutants in the wastewater after aerobic treatment can cause environmental damage to the water source from which the wastewater needs to be discharged.

[0022] 2. A biological wastewater treatment device and method, wherein a pusher is installed so that a screw drives a moving plate downwards while a pressing block at the bottom of the moving plate scrapes one side of the filter cloth on the mixing frame and transports the scraped solid debris to the decontamination tank. At this time, the moving component drives the conveyor belt to move in the direction of the collection bin, and at the same time drives the sealing plate in the sealing component to move forward, thereby opening the passage between the decontamination tank and the purification chamber. The conveyor belt rotates, and the solid debris and flocculent matter at the bottom of the pressing block are scraped off by the partition on the conveyor belt and transported to the collection bin for collection. At the same time, through the cooperation between the water pump and the drain pipe, the residual effluent in the decontamination tank is recycled to the purification chamber for circulation and purification, thereby achieving the separation and classified collection of solid debris and flocculent matter in the effluent. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is one of the schematic diagrams of the internal structure of the purification chamber of the present invention;

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of section A;

[0026] Figure 4 This is a second schematic diagram of the internal structure of the purification chamber of the present invention;

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of section B in the middle;

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the C-section structure;

[0029] Figure 7 This is a schematic diagram of the sewage discharge device of the present invention;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of the middle D section structure;

[0031] Figure 9 This is a schematic diagram of the moving part structure of the present invention;

[0032] Figure 10 For the present invention Figure 9 Schematic diagram of the structure of section E in the middle.

[0033] In the diagram: 1. Purification chamber; 2. Decontamination tank; 3. Separation device; 4. Sewage discharge device; 5. Drainage device; 6. Drive component; 31. Mixing frame; 32. Filter cloth; 33. Pushing component; 41. Conveyor belt; 42. Moving component; 43. Sealing component; 34. Rotating rod; 35. Center rod; 36. Sleeve rod; 61. First motor; 62. Second motor; 63. Rotating block; 64. Gear groove; 65. Gear belt; 331. Moving plate; 332. Rectangular shape 333. Groove; 334. Pressing block; 335. Channel opening; 336. First gear; 337. Screw; 338. Ring gear; 49. Partition plate; 40. Rectangular plate; 41. Transport roller; 42. Third motor; 43. Connecting shaft; 44. Bevel gear set; 45. Storage compartment; 46. Threaded rod; 47. Sliding groove; 48. Sliding block; 49. Fourth motor; 40. Sealing plate; 41. Vertical plate; 52. Drainage pipe; 533. Water pump. Detailed Implementation

[0034] 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.

[0035] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a biological wastewater treatment device and a biological wastewater treatment method. Example

[0036] Please see Figures 1-10 A biological wastewater treatment device includes a purification chamber 1 and a decontamination tank 2. The purification chamber 1 is fixedly installed on the top of the decontamination tank 2. A separation device 3 is installed inside the purification chamber 1. A sewage discharge device 4 and a drainage device 5 are installed inside the decontamination tank 2.

[0037] The purification chamber 1 is equipped with a drive unit 6. The separation device 3 includes two stirring frames 31 and a filter cloth 32 disposed in the stirring frames 31. When the purification chamber 1 filters sewage, the drive unit 6 drives the two stirring frames 31 to separate and rotates the two stirring frames 31 at the same time. The sewage in the purification chamber 1 is stirred and filtered through the filter cloth 32. After the sewage in the purification chamber 1 has fully reacted, the drive unit 6 drives the two stirring frames 31 to move closer to each other and concentrates the solid impurities after reaction in the purification chamber 1 into the two stirring frames 31.

[0038] Two stirring frames 31 are equipped with pushers 33. After the filtered water in the purification chamber 1 is discharged, the drive unit 6 drives the pushers 33 to move downward and transports the solid debris in the two stirring frames 31 to the decontamination tank 2.

[0039] The sewage discharge device 4 includes a conveyor belt 41, a moving part 42 that drives the conveyor belt 41 to move, and a sealing part 43 that controls the opening and closing between the purification chamber 1 and the desiccation tank 2. The moving part 42 drives the conveyor belt 41 to move forward, and causes the front end of the conveyor belt 41 to move out of the desiccation tank 2. While the moving part 42 drives the conveyor belt 41 to move forward, it also drives the sealing part 43 to operate, so that the purification chamber 1 and the desiccation tank 2 are connected. The solid debris carried by the pushing part 33 is transported to the outside of the desiccation tank 2 through the conveyor belt 41.

[0040] Specifically, the process involves stirring and filtering. Water from the sludge reaction tank is discharged into the purification chamber 1. Before the water enters the purification chamber 1, the two stirring frames 31 are separated. After the water enters the purification chamber 1, a corresponding purifying agent is introduced. The driving component 6 drives the two stirring frames 31 to rotate simultaneously, thoroughly stirring the water in the purification chamber 1. This ensures that the water and the purifying agent come into full contact and react. Once the reaction between the water and the purifying agent is complete, impurities in the water combine with the purifying agent to form flocs. These flocs are located between the two stirring frames 31. Simultaneously, the filter cloth 32 filters and separates solid impurities from the water. Then, the driving component 6 drives the two stirring frames 31 to rotate relative to each other, gradually collecting the flocs and solid impurities in the water into the two stirring frames 31 until they overlap. Finally, the purified water in the purification chamber 1 is discharged.

[0041] After the wastewater in the purification chamber 1 is discharged, the moving part 42 drives the conveyor belt 41 to move forward, and at the same time drives the sealing part 43 to move forward, so that the purification chamber 1 and the decontamination tank 2 are connected. At the same time, the top of the conveyor belt 41 is located at the connection between the purification chamber 1 and the decontamination tank 2. Then, the solid waste in the two mixing frames 31 is moved downward by the pushing part 33 and transported to the decontamination tank 2 and falls onto the conveyor belt 41. The solid waste is discharged by the conveyor belt 41. At the same time, the wastewater that is not completely discharged in the decontamination tank 2 is transported back to the purification chamber 1 for purification treatment through the drainage device 5.

[0042] By setting up the stirring frame 31 and filter cloth 32 inside the purification chamber 1, after the sewage is discharged into the purification chamber 1, the stirring frame 31 and filter cloth 32 rotate simultaneously. While stirring the sewage, they separate and filter the solid impurities in the sewage, and isolate the flocculent matter generated by the reaction between the sewage and the purifying agent. After the sewage in the purification chamber 1 has completely reacted, the purification chamber 1 is emptied, and the driving component 6 drives the two stirring frames 31 to move towards each other and overlap, so that the solid impurities and flocculent matter in the sewage are collected in the two stirring frames 31. This achieves the goal of purifying the sewage while separating the flocculent matter generated by the reaction in the sewage and the solid impurities that are already present in the sewage. This solves the problem that the heavy metals and organic pollutants remaining in the sewage after the sewage has been treated in the aerobic tank will cause environmental damage to the water source where the sewage needs to be discharged. Example

[0043] The difference from the above embodiments is that, see below Figures 1-10At the bottom axis of the purification chamber 1, a rotating rod 34 is rotatably connected via a bearing. A central rod 35 is fixedly connected to the top of the rotating rod 34. A sleeve rod 36 is sleeved around the outer periphery of the central rod 35. One stirring frame 31 is fixedly installed on the outer periphery of the rotating rod 34, and the other stirring frame 31 is fixedly installed on the outer periphery of the sleeve rod 36. When the two stirring frames 31 overlap, they form a closed rectangular space.

[0044] The driving component 6 includes a first motor 61, which is fixedly installed at the top of the purification chamber 1. The top of the central rod 35 is rotatably connected to the inner wall of the top of the purification chamber 1 through a bearing. The output end of the first motor 61 is fixedly connected to the top of the central rod 35. A second motor 62 is fixedly connected to the top of the purification chamber 1. A rotating block 63 is rotatably connected to the top of the inner cavity of the purification chamber 1 through a bearing. The output end of the second motor 62 is fixedly connected to the rotating block 63. The outer periphery of the sleeve rod 36 and the outer periphery of the rotating block 63 are both provided with toothed grooves 64. A toothed belt 65 is sleeved on the outer periphery of the sleeve rod 36 and the outer periphery of the rotating block 63. The toothed belt 65 is meshed with the rotating block 63 and the sleeve rod 36 through the toothed grooves 64.

[0045] The pusher 33 includes a movable plate 331. A rectangular groove 332 is provided on the inner wall of the stirring frame 31. The movable plate 331 is located inside the stirring frame 31 and is slidably connected to the stirring frame 31 through the rectangular groove 332. A pressing block 333 is fixedly connected to the bottom of the movable plate 331. One side of the pressing block 333 is attached to the filter cloth 32. A channel opening 334 is provided at the bottom of the purification chamber 1. The cross-section of the space formed by the two stirring frames 31 matches the cross-section of the channel opening 334. The pressing block 333 extends into the decontamination tank 2 through the channel opening 334.

[0046] The pusher 33 also includes a first gear 335. A screw 336 is rotatably connected to a rectangular groove 332 on the side of the stirring frame 31 near the inner wall of the purification chamber 1 via a bearing. The screw 336 is threadedly connected to the moving plate 331. The top end of the screw 336 extends to the top of the stirring frame 31. The first gear 335 is rotatably connected to the top of the stirring frame 31 via a bearing. The screw 336 and the first gear 335 are rotatably connected via a one-way bearing. A ring gear 337 is fixedly connected to the inner wall of the purification chamber 1. The first gear 335 and the ring gear 337 are meshed together.

[0047] Specifically, the water to be discharged from the sludge reaction tank is discharged into the purification chamber 1. Before the discharged water enters the purification chamber 1, the two stirring frames 31 are in a separated state. The discharged water is directly discharged between the two stirring frames 31, and the discharge position is located on the side of the stirring frame 31 near the pressing block 333. Then, the first motor 61 and the second motor 62 operate simultaneously. The first motor 61 drives the central rod 35 to rotate, thereby driving the rotating rod 34 to rotate, and then driving the stirring frame 31 fixedly connected to the rotating rod 34 to rotate. The second motor 62 rotates, driving the rotating block 63 to rotate. Through the meshing connection between the toothed belt 65 and the rotating block 63 and the toothed groove 64 on the sleeve rod 36, the sleeve rod 36 is driven to rotate, thereby driving the stirring frame 31 fixedly connected to the sleeve rod 36 to rotate. A stirring frame 31 rotates in the same direction and synchronously, thereby stirring the effluent in the purification chamber 1 and ensuring that the effluent and the purification agent come into full contact. This allows the heavy metal impurities in the effluent to react with the purification agent and form flocculent matter. At the same time, the filter cloth 32 filters out solid particles in the effluent. After the effluent is completely purified, the second motor 62 rotates in the opposite direction, causing one of the stirring frames 31 to rotate in the opposite direction and the two stirring frames 31 to overlap. The filter cloth 32 isolates all the flocculent matter and solid impurities in the effluent between the two filter cloths 32. Then, the effluent in the purification chamber 1 is discharged, and the remaining solid impurities and flocculent matter are collected in the two stirring frames 31.

[0048] At this time, the first motor 61 rotates in the reverse direction, driving the two overlapping stirring frames 31 to rotate synchronously in the opposite direction. Since the first gear 335 is rotatably connected to the screw 336 through a one-way bearing, when the two stirring frames 31 rotate in the forward direction for stirring, the first gear 335 meshes with the ring gear 337 and rotates, without driving the screw 336 to rotate. When the two stirring frames 31 rotate in the opposite direction, the screw 336 rotates through the meshing connection between the first gear 335 and the ring gear 337. Through the threaded connection between the screw 336 and the moving plate 331, and the moving plate 336... The sliding connection between the filter cloth 31 and the stirring frame 31 causes the pressing block 333 to move downwards. The pressing block 333 scrapes and transports the solid debris and flocculent matter on the filter cloth 32 and the inner wall of the stirring frame 31 downwards. When the bottom of the pressing plate moves to the position of the channel opening 334 connecting the purification chamber 1 and the decontamination tank 2, the setting of the pressing plate and the setting of the bottom of the stirring frame 31 fitting with the bottom of the inner cavity of the purification chamber 1 push all the flocculent matter and solid impurities in the two stirring frames 31 into the channel opening 334, and transport them into the decontamination tank 2 through the pressing plate. Example

[0049] The difference from the above embodiments is that, see below Figures 1-10The sewage discharge device 4 also includes a partition plate 44. Rectangular plates 45 are provided on both sides of the inner cavity of the sewage tank 2. Two rectangular plates 45 are rotatably connected to two conveyor rollers 46 through bearings. A conveyor belt 41 is sleeved on the two conveyor rollers 46. Multiple partition plates 44 are evenly fixedly installed on the conveyor belt 41. A third motor 47 is fixedly installed on one end of one rectangular plate 45. A connecting shaft 48 is rotatably connected to one end of one rectangular plate 45 through a bearing. A bevel gear set 49 that meshes with each other is fixedly connected between the connecting shaft 48 and one of the conveyor rollers 46. The output end of the third motor 47 is fixedly connected to one end of the connecting shaft 48. A storage bin 40 is installed on one side of the sewage tank 2.

[0050] The movable component 42 includes a threaded rod 421. A sliding groove 422 is provided on the inner wall of the descaling tank 2. A sliding block 423 is fixedly connected to one side of the rectangular plate 45. The sliding block 423 is slidably disposed in the sliding groove 422. The threaded rod 421 is rotatably disposed in one of the sliding grooves 422 through a bearing. The threaded rod 421 is threadedly connected to one of the sliding blocks 423. A fourth motor 424 is fixedly connected to one side of the descaling tank 2. The output end of the fourth motor 424 is fixedly connected to one end of the threaded rod 421.

[0051] The sealing element 43 includes a sealing plate 431, two rectangular plates 45 with vertical plates 432 fixedly connected to their tops, the sealing plate 431 being fixedly mounted on the two vertical plates 432, and the top of the sealing plate 431 being in contact with the top of the inner cavity of the decontamination tank 2.

[0052] The drainage device 5 includes a drain pipe 51. One end of the drain pipe 51 is fixedly installed at the bottom of one side of the desulphurization tank 2 and communicates with the inner cavity of the desulphurization tank 2. The other end of the drain pipe 51 is fixedly installed on the purification chamber 1 and communicates with the purification chamber 1. A water pump 52 is installed on the drain pipe 51.

[0053] Specifically, after the effluent in the purification chamber 1 is purified and discharged, the fourth motor 424 drives the threaded rod 421 to rotate. Through the threaded connection between the threaded rod 421 and the sliding block 423, the rectangular plate 45 moves forward, causing the front end of the conveyor belt 41 to move out of the sludge tank 2 and onto the top of the collection chamber 40. At the same time, the sealing plate 431 moves forward, thereby opening the channel 334 between the sludge tank 2 and the purification chamber 1. This allows the solid impurities and flocculent matter accumulated at the channel 334 to fall downwards under the influence of gravity and onto the conveyor belt 41. Simultaneously, the partition plate 44 scrapes away the solid impurities and flocculent matter at the channel 334. At the same time, the third motor 47 runs, driving the bevel gear set 49 to run, thereby driving the conveyor roller 46 to rotate, which in turn drives the conveyor belt 41 to rotate. Through the rotation of the conveyor belt 41, the solid impurities and flocculent matter on the conveyor belt 41 are transported into the collection chamber 40.

[0054] Meanwhile, the water pump 52 is used to transport the wastewater accumulated at the bottom of the decontamination tank 2 to the purification chamber 1 through the drain pipe 51 for circulation and purification. Example

[0055] See Figures 1-10 This embodiment discloses a biological wastewater treatment method, which utilizes a biological wastewater treatment device. The specific steps are as follows:

[0056] The process involves mixing and filtering the water from the sludge reaction tank into the purification chamber 1. Before the water enters the purification chamber 1, the two mixing frames 31 are separated. After the water enters the purification chamber 1, a corresponding purifying agent is introduced. The driving component 6 drives the two mixing frames 31 to rotate simultaneously, thoroughly mixing the water in the purification chamber 1. This ensures that the water and the purifying agent come into full contact and react. Once the reaction between the water and the purifying agent is complete, the impurities in the water combine with the purifying agent to form flocs. These flocs are located between the two mixing frames 31. Simultaneously, the filter cloth 32 filters and separates the solid impurities in the water. Then, the driving component 6 drives the two mixing frames 31 to rotate relative to each other, gradually collecting the flocs and solid impurities in the water into the two mixing frames 31 until they overlap. Finally, the purified water in the purification chamber 1 is discharged.

[0057] After the wastewater in the purification chamber 1 is discharged, the moving part 42 drives the conveyor belt 41 forward and the sealing part 43 forward, so that the purification chamber 1 and the decontamination tank 2 are connected. At the same time, the top of the conveyor belt 41 is located at the connection between the purification chamber 1 and the decontamination tank 2. Then, the pushing part 33 drives the solid waste in the two mixing frames 31 to move downward and be transported to the decontamination tank 2 and fall onto the conveyor belt 41. The solid waste is discharged by the conveyor belt 41. At the same time, the wastewater that has not been completely discharged from the decontamination tank 2 is transported back to the purification chamber 1 for purification treatment through the drainage device 5.

[0058] 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 biological wastewater treatment device, comprising a purification chamber and a decontamination tank, characterized in that: The purification chamber is fixedly installed on the top of the decontamination tank. A separation device is installed inside the purification chamber, and a sewage discharge device and a drainage device are installed inside the decontamination tank. The purification chamber is equipped with a driving component. The separation device includes two stirring frames and a filter cloth disposed in the stirring frames. When the purification chamber filters sewage, the driving component drives the two stirring frames to separate and rotates the two stirring frames simultaneously. The sewage in the purification chamber is stirred and filtered through the filter cloth. After the sewage in the purification chamber has fully reacted, the driving component drives the two stirring frames to move closer to each other and concentrates the reacted solid impurities in the purification chamber into the two stirring frames. The two stirring frames are equipped with a pushing component. After the filtered water in the purification chamber is discharged, the driving component drives the pushing component to move downward and transport the solid debris in the two stirring frames to the decontamination tank. The sewage discharge device includes a conveyor belt, a moving component that drives the conveyor belt to move, and a sealing component that controls the opening and closing between the purification chamber and the desiccation tank. The moving component drives the conveyor belt to move forward, and causes the front end of the conveyor belt to move out of the desiccation tank. The moving component drives the sealing component to operate while driving the conveyor belt to move forward, so as to connect the purification chamber and the desiccation tank. The solid debris carried by the pushing component is transported to the outside of the desiccation tank by the conveyor belt. A rotating rod is rotatably connected to the bottom axis of the purification chamber via a bearing. A central rod is fixedly connected to the top of the rotating rod. A sleeve rod is fitted around the outer periphery of the central rod. One of the stirring frames is fixedly installed on the outer periphery of the rotating rod, and the other stirring frame is fixedly installed on the outer periphery of the sleeve rod. When the two stirring frames overlap, they form a closed rectangular space. The driving component includes a first motor, which is fixedly installed at the top axis of the purification chamber. The top of the central rod is rotatably connected to the inner wall of the top of the purification chamber via a bearing. The output end of the first motor is fixedly connected to the top of the central rod. A second motor is fixedly connected to the top of the purification chamber. A rotating block is rotatably connected to the top of the inner cavity of the purification chamber via a bearing. The output end of the second motor is fixedly connected to the rotating block. The outer circumference of the sleeve rod and the outer circumference of the rotating block are both provided with toothed grooves. A toothed belt is sleeved on the outer circumference of the sleeve rod and the outer circumference of the rotating block. The toothed belt is engaged with the rotating block and the sleeve rod through the toothed grooves. The pushing component includes a movable plate. A rectangular groove is provided on the inner wall of the stirring frame. The movable plate is disposed in the stirring frame and is slidably connected to the stirring frame through the rectangular groove. A pressing block is fixedly connected to the bottom of the movable plate. One side of the pressing block is attached to the filter cloth. A channel opening is provided at the bottom of the purification chamber. The cross-section of the space formed by the two stirring frames matches the cross-section of the channel opening. The pressing block extends into the decontamination tank through the channel opening. The pushing component also includes a first gear. A screw is rotatably connected to the rectangular groove on the side of the stirring frame near the inner wall of the purification chamber via a bearing. The screw is threadedly connected to the moving plate. The top end of the screw extends to the top of the stirring frame. The first gear is rotatably connected to the top of the stirring frame via a bearing. The screw and the first gear are rotatably connected via a one-way bearing. A ring gear is fixedly connected to the inner wall of the purification chamber. The first gear meshes with the ring gear.

2. The biological wastewater treatment device according to claim 1, characterized in that: The sewage discharge device also includes partitions. Rectangular plates are provided on both sides of the inner cavity of the sewage tank. Two rectangular plates are rotatably connected to each other via bearings. The conveyor belt is sleeved on the two conveyor rollers. Multiple partitions are evenly fixedly installed on the conveyor belt. A third motor is fixedly installed at one end of one of the rectangular plates. A connecting shaft is rotatably connected to one end of another rectangular plate via bearings. A bevel gear set that meshes with each other is fixedly connected between the connecting shaft and one of the conveyor rollers. The output end of the third motor is fixedly connected to one end of the connecting shaft. A storage compartment is installed on one side of the sewage tank.

3. The biological wastewater treatment device according to claim 2, characterized in that: The moving part includes a threaded rod, the inner wall of the decontamination tank is provided with a sliding groove, a sliding block is fixedly connected to one side of the rectangular plate, the sliding block is slidably disposed in the sliding groove, the threaded rod is rotatably disposed in one of the sliding grooves through a bearing, the threaded rod is threadedly connected to one of the sliding blocks, a fourth motor is fixedly connected to one side of the decontamination tank, and the output end of the fourth motor is fixedly connected to one end of the threaded rod.

4. The biological wastewater treatment device according to claim 3, characterized in that: The sealing element includes a sealing plate, and two rectangular plates are fixedly connected to the top of a vertical plate. The sealing plate is fixedly mounted on the two vertical plates, and the top of the sealing plate is in contact with the top of the inner cavity of the decontamination tank.

5. A biological wastewater treatment device according to claim 4, characterized in that: The drainage device includes a drain pipe, one end of which is fixedly installed at the bottom of the desulphurization tank and communicates with the inner cavity of the desulphurization tank, and the other end of which is fixedly installed on the purification chamber and communicates with the purification chamber. A water pump is installed on the drain pipe.

6. A biological wastewater treatment method, characterized in that: The specific steps of using a biological wastewater treatment device as described in any one of claims 1-5 are as follows: The mixing and filtration process involves discharging the water from the sludge reaction tank into the purification chamber. Before the water enters the purification chamber, the two mixing frames are separated. After the water enters the purification chamber, a corresponding purifying agent is introduced. The driving component drives the two mixing frames to rotate simultaneously, thoroughly mixing the water in the purification chamber. This ensures that the water and the purifying agent come into full contact and react. Once the reaction is complete, impurities in the water combine with the purifying agent to form flocs, which are located between the two mixing frames. Simultaneously, the filter cloth filters and separates solid impurities from the water. The driving component then drives the two mixing frames to rotate relative to each other, gradually collecting the flocs and solid impurities in the water until the two mixing frames overlap. Finally, the purified water in the purification chamber is discharged. After the wastewater in the purification chamber is discharged, the moving parts drive the conveyor belt forward, which in turn moves the sealing parts forward, connecting the purification chamber and the decontamination tank. The top of the conveyor belt is positioned at the connection point between the purification chamber and the decontamination tank. Then, the pushing parts move the solid waste in the two mixing frames downward and transport it to the decontamination tank, where it falls onto the conveyor belt. The solid waste is then discharged by the conveyor belt. Meanwhile, any wastewater that has not been completely discharged from the decontamination tank is transported back to the purification chamber for purification treatment through the drainage device.

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