Sewage treatment purification tank

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment purification tank which comprises a tank body, three pairs of clamping grooves are fixed in the tank body, and a first partition plate, a second partition plate and a third partition plate are fixed in the three pairs of clamping grooves correspondingly. The interior of the tank body is divided into a sedimentation tank, a hydrolysis acidification tank, a contact oxidation tank and a water outlet tank through a first partition plate, a second partition plate and a third partition plate, and an aeration assembly used for aeration is arranged in the tank body. A sufficient growth place is provided for microorganisms through the filler assembly and the attachment assembly, and the ropes drive the elastic filament clusters to swing in a limited amplitude, so that winding between the ropes is avoided, and the large-area and high-efficiency contact effect of the elastic filament clusters and sewage is ensured; further, the sewage treatment efficiency of the hydrolysis acidification pool and the contact oxidation pool is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a sewage treatment purification tank. Background Art

[0002] Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for discharging into a certain water body or for reuse. Before the domestic water in cities and rural areas is discharged, sewage treatment must be carried out and meet the standards before it can be discharged. In cities, sewage treatment tends to focus on industrial sewage treatment. In rural areas, buried sewage treatment purification tanks are generally used for treatment;

[0003] For the buried sewage treatment purification tank used in rural areas, it usually adopts a multi-pool structure for step-by-step treatment. In this process, microorganisms are often used to degrade impurities in sewage, and the growth of microorganisms requires attachment to biological fillers. This kind of biological filler uses a rope as the main shaft, and plastics, ceramics, or semi-soft fiber fillers are fixed on the main shaft to provide attachment for microorganisms. However, this kind of biological filler with a rope as the main shaft will swing with the water flow, resulting in the phenomenon of entanglement between adjacent ropes, thereby reducing the area for microorganisms to attach and affecting the purification of sewage. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a sewage treatment purification tank, which solves the problems put forward in the above background art.

[0005] The present invention provides the following technical solution: A sewage treatment purification tank includes a tank body. Inside the tank body, three pairs of clamping grooves are fixed. Inside the three pairs of clamping grooves, a first partition board, a second partition board, and a third partition board are respectively fixed. And the inner part of the tank body is divided into a sedimentation tank, a hydrolysis acidification tank, a contact oxidation tank, and an effluent tank by the first partition board, the second partition board, and the third partition board. An aeration component for aeration is arranged inside the tank body;

[0006] Inside the hydrolysis acidification tank and the contact oxidation tank, a filler component for microorganism attachment is arranged;

[0007] The filler component includes an upright frame, which is fixed at the bottom of the inner cavity of the tank body. A connecting ring is fixed on the surface of the upright frame. The bottom end of the connecting ring is threadedly connected with a connecting rod. Adjusting cavities are opened inside both ends of the connecting rod. Sealing tubes are fixed on the surfaces of both ends of the connecting rod, and the sealing tubes communicate with the adjusting cavities. Electromagnets are fixed inside the mutually close ends of the two adjusting cavities. Iron sheets are slidably connected inside the adjusting cavities. A rope is fixed on the surface of the iron sheet. The rope passes through the sealing tube, and a cluster of elastic filaments is fixed on the surface of the rope.

[0008] Optionally, a shed cover is fixed to the top of the tank body. An inlet is provided on one side of the tank body close to the sedimentation tank, and an outlet is provided on one side of the tank body close to the outlet tank.

[0009] Optionally, the aeration assembly includes a support frame. The bottom of the support frame is fixed to the bottom plate of the inner cavity of the tank body. The vertical part of the support frame is located inside the sedimentation tank. One end of the horizontal part of the support frame is fixed with a tee pipe. Two ends of the tee pipe are respectively fixed with a first aeration pipe and a second aeration pipe. The air outlet end of the first aeration pipe is located inside the hydrolysis acidification tank, and an aeration disc is fixed to the air outlet end of the first aeration pipe. The air outlet end of the second aeration pipe is located inside the contact oxidation tank, and an aeration disc is fixed to the air outlet end of the second aeration pipe.

[0010] Optionally, a first drain pipe is fixed inside the hydrolysis acidification tank. The hydrolysis acidification tank and the contact oxidation tank are communicated through the first drain pipe. A second drain pipe is fixed inside the contact oxidation tank. The contact oxidation tank and the outlet tank are communicated through the second drain pipe.

[0011] Optionally, a fixing frame is fixed inside the hydrolysis acidification tank. One end of the horizontal part of the fixing frame passes through the second partition plate and is fixed to the third partition plate. The end of the horizontal part of the fixing frame away from the third partition plate passes through the first partition plate and is fixed to the support frame.

[0012] Optionally, a water injection port is provided on the surface of the first partition plate. The sedimentation tank and the hydrolysis acidification tank are communicated through the water injection port.

[0013] Optionally, an activity groove is provided at the middle position of the connecting rod. A partition plate is fixed inside the activity groove. First springs are fixed to the mutually remote ends of the adjustment cavity. One end of the first spring is fixed to the iron sheet.

[0014] Optionally, two groups of attachment assemblies are provided at the upper and lower ends of the surface of the connection ring. The attachment assembly includes a plastic ring and a fixing rod. The plastic rings are connected and fixed through the fixing rod. A limiting buckle is clamped on the outside of the mutually close ends of the two plastic rings. A positioning column is fixed to the surface of the limiting buckle.

[0015] Optionally, the limiting buckles are all clamped inside the activity groove, and are respectively located above and below the partition plate. Thrust rods are slidably and sealingly connected inside the connecting rod, and two ends of the thrust rod are respectively located inside the adjustment cavity and the activity groove. The thrust rod passes through the electromagnet, and one end of the thrust rod close to the positioning column is threadedly connected to the positioning column. Second springs are fixed to the top and bottom of the partition plate, and the second springs abut against the limiting buckles.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. After the sewage enters the interior of the tank body of this sewage treatment and purification tank, the packing component and the attachment component provide sufficient growth places for microorganisms, and the ropes drive the elastic filament clusters to swing with a limited amplitude, avoiding the entanglement between ropes and ensuring the effect of large-area and high-efficiency contact between the elastic filament clusters and the sewage, thereby improving the efficiency of sewage treatment in the hydrolysis acidification tank and the contact oxidation tank.

[0018] 2. In this sewage treatment and purification tank, through the repeated energization of the electromagnet, the packing component and the attachment component are in a state of low-frequency and micro-amplitude vibration, thereby playing a self-cleaning role, stripping the aged biofilm and suspended substances, providing sufficient attachment places for new microorganisms, and thus improving the efficiency of sewage treatment in the hydrolysis acidification tank and the contact oxidation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural view of the present invention;

[0020] Figure 2 It is an internal view of the structure of the present invention;

[0021] Figure 3 It is a cross-sectional view of the structure of the present invention;

[0022] Figure 4 It is a schematic structural view of the vertical frame of the present invention;

[0023] Figure 5 It is a schematic structural view of the connecting rod, rope and elastic filament cluster of the present invention;

[0024] Figure 6 It is a schematic structural view of the connecting rod and the plastic ring of the present invention;

[0025] Figure 7 It is a schematic structural view of the attachment component of the present invention;

[0026] Figure 8 It is a cross-sectional view of the structure of the connecting rod of the present invention;

[0027] Figure 9 is Figure 8 a partial enlarged view of part A in

[0028] Figure 10 is Figure 8 a partial enlarged view of part B in

[0029] In the figure: 1. Tank body; 11. Water inlet; 12. Water outlet; 2. Shed cover; 3. Card slot; 31. First partition; 32. Second partition; 33. Third partition; 34. Water injection port; 4. Sedimentation tank; 41. Hydrolysis acidification tank; 42. Contact oxidation tank; 43. Effluent tank; 5. Support frame; 51. Three-way pipe; 52. Fixed frame; 53. First aeration pipe; 54. Second aeration pipe; 55. First drain pipe; 56. Second drain pipe; 6. Upright frame; 7. Connecting ring; 71. Connecting rod; 72. Adjusting cavity; 73. Sealing pipe; 74. Electromagnet; 75. Movable slot; 76. Isolation plate; 8. Iron sheet; 81. Rope; 82. Cluster of elastic filaments; 83. First spring; 9. Plastic ring; 91. Fixed rod; 92. Limit buckle; 93. Positioning column; 94. Thrust rod; 95. Second spring. Specific implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1-10 , a sewage treatment and purification tank, including a tank body 1, three pairs of card slots 3 are fixed inside the tank body 1, a first partition 31, a second partition 32 and a third partition 33 are respectively fixed inside the three pairs of card slots 3, and the inside of the tank body 1 is divided into a sedimentation tank 4, a hydrolysis acidification tank 41, a contact oxidation tank 42 and an effluent tank 43 by the first partition 31, the second partition 32 and the third partition 33. An aeration assembly for aeration is provided inside the tank body 1, and a filler assembly for microbial attachment is provided inside the hydrolysis acidification tank 41 and the contact oxidation tank 42;

[0032] The filler assembly includes an upright frame 6, the upright frame 6 is fixed at the bottom of the inner cavity of the tank body 1, a connecting ring 7 is fixed on the surface of the upright frame 6, the bottom end of the connecting ring 7 is threadedly connected with a connecting rod 71, adjusting cavities 72 are opened inside both ends of the connecting rod 71, sealing pipes 73 are fixed on the surfaces of both ends of the connecting rod 71, and the sealing pipes 73 communicate with the adjusting cavities 72. Electromagnets 74 are fixed inside the mutually close ends of the two adjusting cavities 72, iron sheets 8 are slidably connected inside the adjusting cavities 72, ropes 81 are fixed on the surfaces of the iron sheets 8, the ropes 81 pass through the sealing pipes 73, and clusters of elastic filaments 82 are fixed on the surfaces of the ropes 81;

[0033] A shed cover 2 is fixed to the top of the tank body 1. An inlet 11 is provided on one side of the tank body 1 close to the sedimentation tank 4, and an outlet 12 is provided on one side of the tank body 1 close to the outlet tank 43. The aeration assembly includes a support frame 5. The bottom of the support frame 5 is fixed to the bottom plate of the inner cavity of the tank body 1. The vertical part of the support frame 5 is located inside the sedimentation tank 4. One end of the horizontal part of the support frame 5 is fixed with a tee pipe 51. Two ends of the tee pipe 51 are respectively fixed with a first aeration pipe 53 and a second aeration pipe 54. The air outlet end of the first aeration pipe 53 is located inside the hydrolysis acidification tank 41, and an aeration disc is fixed to the air outlet end of the first aeration pipe 53. The air outlet end of the second aeration pipe 54 is located inside the contact oxidation tank 42, and an aeration disc is fixed to the air outlet end of the second aeration pipe 54;

[0034] A first drain pipe 55 is fixed inside the hydrolysis acidification tank 41. The hydrolysis acidification tank 41 and the contact oxidation tank 42 are communicated through the first drain pipe 55. A second drain pipe 56 is fixed inside the contact oxidation tank 42. The contact oxidation tank 42 and the outlet tank 43 are communicated through the second drain pipe 56. A fixing frame 52 is fixed inside the hydrolysis acidification tank 41. One end of the horizontal part of the fixing frame 52 passes through the second partition plate 32 and is fixed to the third partition plate 33. One end of the horizontal part of the fixing frame 52 far from the third partition plate 33 passes through the first partition plate 31 and is fixed to the support frame 5. A water injection port 34 is provided on the surface of the first partition plate 31. The sedimentation tank 4 and the hydrolysis acidification tank 41 are communicated through the water injection port 34;

[0035] During the specific operation process, first, the inlet 11, the outlet 12 and the tee pipe 51 are respectively connected to external pipelines, so that sewage can enter the inside of the tank body 1 through the inlet 11, and the treated sewage inside the outlet tank 43 can be discharged externally through the outlet 12. Among them, the tee pipe 51 is communicated with an external air pipe to pump air to the tee pipe 51;

[0036] After the sewage enters the inside of the tank body 1 through the inlet 11, under the partitioning action of the first partition plate 31, the second partition plate 32 and the third partition plate 33, the sewage first enters the inside of the sedimentation tank 4. The sewage undergoes sedimentation inside the sedimentation tank 4, so that large particles, blocky sundries or mud in the sewage sink to the bottom. As the water level gradually rises, it enters the inside of the hydrolysis acidification tank 41 through the water injection port 34;

[0037] After the sewage enters the inside of the hydrolysis acidification tank 41, the tee pipe 51 selectively pumps air to the first aeration pipe 53 or the second aeration pipe 54 under the control of a valve. After the sewage enters the inside of the hydrolysis acidification tank 41, the sewage is hydrolyzed and acidified by the hydrolytic bacteria and acidifying bacteria inside the hydrolysis acidification tank 41, so that the insoluble macromolecular organic matter in the sewage is hydrolyzed into soluble small molecular organic matter, and then through the acidifying bacteria, the small molecular organic matter is further converted into substances such as volatile fatty acids that are more easily utilized by microorganisms for subsequent deep purification;

[0038] After the sewage is treated inside the hydrolysis acidification tank 41 for 2 - 6 hours, the first drain pipe 55 is started through the controller, and the sewage in the hydrolysis acidification tank 41 is discharged into the inside of the contact oxidation tank 42. After contacting with the biofilm formed by aerobic bacteria inside the contact oxidation tank 42, it then plays a role in decomposing organic matter into carbon dioxide and water. And through the three-way pipe 51, air is pumped to the second air diffuser pipe 54, and then the inside of the contact oxidation tank 42 is aerated, so that the aerated water flow can push the sewage to flow, strengthening the mass transfer effect;

[0039] After being treated inside the contact oxidation tank 42 for 6 to 12 hours, the second drain pipe 56 is started through the controller, and the water pump in the contact oxidation tank 42 is sent into the inside of the outlet tank 43 for storage, and then through the water outlet 12, the treated sewage can be discharged externally.

[0040] It should be noted that all the devices of the present invention are controlled by the controller. Valves are provided on both the first air diffuser pipe 53 and the second air diffuser pipe 54. According to the actual hydrolysis acidification efficiency inside the hydrolysis acidification tank 41, air can be selectively transported to the first air diffuser pipe 53 through the valve, and then the inside of the hydrolysis acidification tank 41 is aerated to improve the hydrolysis acidification efficiency. For the sewage stored in the outlet tank 43, disinfection equipment can be added according to the discharge requirements to further disinfect the purified sewage;

[0041] At the same time, the outer walls of the sedimentation tank 4, the hydrolysis acidification tank 41, and the hydrolysis acidification tank 41 are respectively provided with discharge ports for connecting external pipelines to discharge the sludge inside the device.

[0042] Embodiment 2: Specifically, on the basis of Embodiment 1, filler assemblies for microorganisms to attach are provided inside both the hydrolysis acidification tank 41 and the contact oxidation tank 42. For the filler assembly inside the hydrolysis acidification tank 41, the cultivated microorganisms are hydrolysis bacteria and acidification bacteria, while for the filler assembly inside the contact oxidation tank 42, the cultivated microorganisms are aerobic bacteria;

[0043] During the hydrolysis acidification and biological contact oxidation processes in Embodiment 1, when the sewage first enters the inside of the hydrolysis acidification tank 41 or the contact oxidation tank 42, two electromagnets 74 at the mutually close ends of the adjustment cavity 72 are started through the controller. After the electromagnets 74 are powered on, they generate magnetic force and adsorb the iron sheet 8 located in the same adjustment cavity 72, so that the iron sheet 8 is adsorbed on the surface of the electromagnet 74. When the iron sheet 8 is being adsorbed, the iron sheet 8 pulls the rope 81 to contract inside the sealed pipe 73, so that both ends of the rope 81 respectively contract into the two adjustment cavities 72, and then the whole of the rope 81 is tightened, and then the elastic filament clusters 82 are attached to the surface of the connecting rod 71;

[0044] When sewage enters the hydrolysis acidification tank 41 or the contact oxidation tank 42, while the water level of the sewage rises, it avoids the situation where the adjacent ropes 81 are wrapped around each other by the sewage, and avoids the reduction of the microbial attachment area of each elastic filament cluster 82 due to the winding of the ropes 81, thereby improving the sewage treatment efficiency;

[0045] When the hydrolysis acidification tank 41 or the contact oxidation tank 42 is full inside, the electromagnet 74 can be powered off. After the electromagnet 74 is powered off, it loses the adsorption force on the iron sheet 8, and the iron sheet 8 is reset under the action of the first spring 83, so that both ends of the rope 81 are in a loose state inside the adjustment cavity 72. When the sewage surges in the hydrolysis acidification tank 41 or the contact oxidation tank 42, it will drive the elastic filament cluster 82 and the rope 81 to swing;

[0046] Since both ends of the rope 81 are in a loose state, during the swinging process of the elastic filament cluster 82, it will drive the rope 81 to be gradually drawn out from the inside of the adjustment cavity 72. As both ends of the rope 81 are gradually drawn out from the inside of the adjustment cavity 72, the rope 81 located outside the connecting rod 71 gradually loosens, and then the rope 81 can swing with a limited amplitude. During the swinging process, the elastic filament cluster 82 can cut the water flow, thereby increasing the speed and efficiency of the contact between the sewage and the elastic filament cluster 82, and further improving the efficiency of the microorganisms attached to the surface of the elastic filament cluster 82 to oxidize and purify the sewage;

[0047] Since both ends of the rope 81 are respectively fixed on the surfaces of the two iron sheets 8 in the two adjustment cavities 72, the swinging amplitude of the rope 81 is limited, thus avoiding the situation of entanglement between the ropes 81, ensuring that the elastic filament clusters 82 on the surfaces of the ropes 81 can contact the sewage to the greatest extent, and further improving the sewage treatment efficiency;

[0048] Furthermore, after long-term use, more or less suspended matter adheres to the surface of the elastic filament cluster 82, which reduces the contact area between the microorganisms and the sewage. At this time, the controller can be used to start the electromagnet 74, so that the electromagnet 74 is repeatedly powered on and off. During this process, the electromagnet 74 repeatedly adsorbs the iron sheet 8, and then the iron sheet 8 drives both ends of the rope 81 to be repeatedly tightened and loosened. When the rope 81 is repeatedly tightened, the rope 81 drives the elastic filament cluster 82 to repeatedly contact the connecting rod 71, making the elastic filament cluster 82 in a low-frequency and small-amplitude vibration state;

[0049] When the elastic filament cluster 82 is in a low-frequency and small-amplitude vibration state, it can effectively shake off and peel off the aging biofilm and suspended matter, provide more attachment sites for the new microorganisms, and further improve the contact area between the new microorganisms and the sewage while peeling off the suspended matter, further improving the sewage treatment efficiency;

[0050] Furthermore, by energizing the electromagnet 74, the temperature at which the electromagnet 74 operates can be transmitted to the sewage in the hydrolysis acidification tank 41 and the contact oxidation tank 42 through the connecting rod 71, increasing the temperature of the sewage, thereby raising the temperature of the microbial growth environment in the hydrolysis acidification tank 41 and the contact oxidation tank 42, stabilizing the efficiency of microbial reproduction and growth, and further enhancing the efficiency of sewage purification treatment; this is particularly applicable in winter when the temperature of underground sewage is too low.

[0051] It should be noted that the electromagnet 74 is powered by an externally connected storage battery, while the connecting rod 71 is made of aluminum, enabling the connecting rod 71 to more efficiently transfer the operating temperature of the electromagnet 74 to the sewage. The elastic wire cluster 82 is made of an elastic material, reducing the wear that occurs when the elastic wire cluster 82 vibrates.

[0052] Before the present invention is put into use, the electromagnet 74 and the first spring 83 need to be debugged to ensure that after the first spring 83 pulls the iron sheet 8 back to its original position, the two ends of the rope 81 driven by the iron sheet 8 return to the loose state, and the length by which the rope 81 loosens ensures that the ropes 81 do not contact each other, thereby ensuring that the ropes 81 can swing with a limited amplitude when needed.

[0053] Embodiment 3: An activity groove 75 is provided at the middle position of the connecting rod 71. An isolation plate 76 is fixed inside the activity groove 75. First springs 83 are fixed at the mutually remote ends of the adjustment cavity 72. One end of each first spring 83 is fixed to the iron sheet 8. A total of two sets of attachment components are provided at the upper and lower ends of the surface of the connecting ring 7. Each attachment component includes a plastic ring 9 and a fixing rod 91. The plastic rings 9 are connected and fixed through the fixing rods 91. A limiting buckle 92 is clamped outside the mutually approaching ends of the two plastic rings 9. A positioning column 93 is fixed on the surface of the limiting buckle 92.

[0054] The limiting buckles 92 are both clamped inside the activity groove 75 and are respectively located above and below the isolation plate 76. Thrust rods 94 are slidably and sealingly connected inside the connecting rod 71, and the two ends of each thrust rod 94 are respectively located inside the adjustment cavity 72 and the activity groove 75. The thrust rods 94 pass through the electromagnet 74, and one end of each thrust rod 94 close to the positioning column 93 is threadedly connected to the positioning column 93. Second springs 95 are fixed at the top and bottom of the isolation plate 76, and the second springs 95 abut against the limiting buckles 92.

[0055] Specifically, on the basis of Embodiment 1 and Embodiment 2, microorganisms can not only grow attached to the surface of the elastic wire cluster 82 but also grow attached to the surface of the plastic rings 9. Thus, each connecting rod 71 corresponds to two sets of growth sites, thereby increasing the total area available for microbial attachment in the hydrolysis acidification tank 41 and the contact oxidation tank 42, and further enhancing the efficiency of microbial sewage treatment.

[0056] Furthermore, during the process of Embodiment 2, when the electromagnet 74 is energized, the electromagnet 74 attracts the iron sheet 8. When the iron sheet 8 moves inside the adjustment cavity 72 in the direction towards the electromagnet 74 and gradually approaches the ejector rod 94, until the electromagnet 74 contacts and attracts the iron sheet 8, the iron sheet 8 then pushes the ejector rod 94 to move to the maximum stroke, and the ejector rod 94 then pushes the positioning post 93, causing the positioning post 93 to drive the limit buckle 92 to be pushed, so that the limit buckle 92 drives the whole plastic ring 9 to be pushed;

[0057] Meanwhile, when the limit buckle 92 is subjected to the thrust of the ejector rod 94, the limit buckle 92 squeezes the second spring 95. When the electromagnet 74 is de-energized and the iron sheet 8 resets, the extrusion on the ejector rod 94 is lost, and the second spring 95 drives the limit buckle 92 to reset, thereby causing the limit buckle 92 to drive the plastic ring 9 to drive the positioning post 93 and the ejector rod 94 to reset;

[0058] During the process of repeatedly energizing the electromagnet 74, that is, while the elastic wire cluster 82 vibrates at a low frequency with small amplitude, the plastic ring 9 is also in a state of vibrating up and down at a low frequency with small amplitude. As a result, the plastic ring 9 and the elastic wire cluster 82 are synchronously self-cleaned, enabling the plastic ring 9 to also shake off the aged biofilm, thereby increasing the attachment area of the new microorganisms on the plastic ring 9, and further improving the efficiency of the hydrolysis acidification tank 41 and the contact oxidation tank 42 in treating sewage;

[0059] When both the plastic ring 9 and the elastic wire cluster 82 are in a vibrating state, they come into contact with each other, which can indirectly improve the vibration efficiency of the plastic ring 9 and the elastic wire cluster 82 and enhance the efficiency of peeling off the aged biofilm and suspended solids;

[0060] At the same time, the plastic ring 9 is arranged in a disc shape. When it vibrates up and down, it can further improve the effect of disturbing the water flow, further increasing the contact area and efficiency between the sewage and the microorganisms on the surface of the plastic ring 9, and thus improving the efficiency of the plastic ring 9 in treating sewage.

[0061] It should be noted that the ejector rod 94 is in a sliding and sealed connection state with the connecting rod 71, and the sealing tube 73 is also in a sliding and sealed connection state with the rope 81. Therefore, sewage will not enter the inside of the adjustment cavity 72 through the movable slot 75 and the sealing tube 73. At the same time, when installing the plastic ring 9, it can be first sleeved outside the connecting rod 71, then the limit buckle 92 is snapped onto the outside of the plastic ring 9. Subsequently, one end of the limit buckle 92 is snapped into the inside of the movable slot 75, and the ejector rod 94 is threadedly connected to the outside of the positioning post 93, thereby completing the installation of the whole plastic ring 9.

[0062] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment purification tank, comprising a tank body (1), characterized in that: The tank body (1) includes a hydrolysis acidification tank (41) and a contact oxidation tank (42); a filler assembly for microbial attachment is provided inside the hydrolysis acidification tank (41) and the contact oxidation tank (42). The filler assembly includes a vertical frame (6), the vertical frame (6) is fixed at the bottom of the inner cavity of the tank body (1), a connecting ring (7) is fixed on the surface of the vertical frame (6), the bottom end of the connecting ring (7) is threadedly connected with a connecting rod (71), adjusting cavities (72) are opened inside both ends of the connecting rod (71), sealing tubes (73) are fixed on the surfaces of both ends of the connecting rod (71), and the sealing tubes (73) communicate with the adjusting cavities (72). Electromagnets (74) are fixed inside the mutually approaching ends of the two adjusting cavities (72). Iron sheets (8) are slidably connected inside the adjusting cavities (72), ropes (81) are fixed on the surfaces of the iron sheets (8), the ropes (81) pass through the sealing tubes (73), and elastic wire clusters (82) are fixed on the surfaces of the ropes (81).

2. The sewage treatment and purification tank according to claim 1, characterized in that: Three pairs of clamping grooves (3) are fixed inside the tank body (1). A first partition plate (31), a second partition plate (32) and a third partition plate (33) are respectively fixed inside the three pairs of clamping grooves (3). The inner part of the tank body (1) is divided into a sedimentation tank (4), a hydrolysis acidification tank (41), a contact oxidation tank (42) and an effluent tank (43) by the first partition plate (31), the second partition plate (32) and the third partition plate (33). An aeration assembly for aeration is provided inside the tank body (1).

3. The sewage treatment and purification tank according to claim 1, characterized in that: A shed cover (2) is fixed on the top of the tank body (1). An inlet (11) is opened on one side of the tank body (1) close to the sedimentation tank (4), and an outlet (12) is opened on one side of the tank body (1) close to the effluent tank (43).

4. The sewage treatment and purification tank according to claim 2, wherein: The aeration assembly includes a support frame (5). The bottom of the support frame (5) is fixed to the bottom plate of the inner cavity of the tank body (1). The vertical part of the support frame (5) is located inside the sedimentation tank (4). One end of the horizontal part of the support frame (5) is fixed with a three-way pipe (51). The two ends of the three-way pipe (51) are respectively fixed with a first aeration pipe (53) and a second aeration pipe (54). The air outlet end of the first aeration pipe (53) is located inside the hydrolysis acidification tank (41), and an aeration disc is fixed at the air outlet end of the first aeration pipe (53). The air outlet end of the second aeration pipe (54) is located inside the contact oxidation tank (42), and an aeration disc is fixed at the air outlet end of the second aeration pipe (54).

5. The sewage treatment and purification tank according to claim 4, characterized in that: A first drain pipe (55) is fixed inside the hydrolysis acidification tank (41). The hydrolysis acidification tank (41) and the contact oxidation tank (42) are communicated through the first drain pipe (55). A second drain pipe (56) is fixed inside the contact oxidation tank (42). The contact oxidation tank (42) and the effluent tank (43) are communicated through the second drain pipe (56).

6. The sewage treatment purification tank according to claim 4, wherein: A fixing frame (52) is fixed inside the hydrolysis acidification tank (41). One end of the horizontal part of the fixing frame (52) passes through the second partition plate (32) and is fixed to the third partition plate (33). The end of the horizontal part of the fixing frame (52) away from the third partition plate (33) passes through the first partition plate (31) and is fixed to the support frame (5).

7. The sewage treatment and purification tank according to claim 2, characterized in that: A water injection port (34) is provided on the surface of the first partition plate (31). The sedimentation tank (4) and the hydrolysis acidification tank (41) are communicated through the water injection port (34).

8. The sewage treatment and purification tank according to claim 1, characterized in that: An activity groove (75) is provided at the middle position of the connecting rod (71). A partition plate (76) is fixed inside the activity groove (75). One end of the adjusting cavity (72) away from each other is fixed with a first spring (83). One end of the first spring (83) is fixed to the iron sheet (8).

9. The sewage treatment and purification tank according to claim 8, characterized in that: Two groups of attaching components are provided at the upper and lower ends of the surface of the connecting ring (7). The attaching components include a plastic ring (9) and a fixing rod (91). The plastic rings (9) are connected and fixed through the fixing rods (91). A limiting buckle (92) is clamped outside one end of the two plastic rings (9) close to each other. A positioning column (93) is fixed on the surface of the limiting buckle (92).

10. The sewage treatment and purification tank according to claim 9, characterized in that: The limiting buckles (92) are all clamped inside the activity groove (75) and are respectively located above and below the partition plate (76). A push rod (94) is slidably and sealingly connected inside the connecting rod (71). The two ends of the push rod (94) are respectively located inside the adjusting cavity (72) and the activity groove (75). The push rod (94) passes through the electromagnet (74). One end of the push rod (94) close to the positioning column (93) is threadedly connected to the positioning column (93). Second springs (95) are fixed to the top and bottom of the partition plate (76), and the second springs (95) abut against the limiting buckles (92).

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