A wastewater treatment purification tank

Abstract

The present application relates to sewage treatment technical field, and disclose a kind of sewage treatment purification tank, including tank body, the inside of the tank body is fixed with three pairs of clamping groove, the inside of three pairs of clamping groove is respectively fixed with first baffle, second baffle and third baffle, and by first baffle, second baffle and third baffle the inside of tank body is separated into sedimentation tank, hydrolysis acidification tank, contact oxidation tank and effluent tank, the inside of the tank body is equipped with aeration assembly for aeration, this sewage treatment purification tank, when sewage enters the inside of tank body, by filler assembly and attachment component provides sufficient growth place for microorganism, and make that elastic silk strip cluster is driven by rope limited amplitude swing, avoid the entanglement between rope and rope, guarantee that elastic silk strip cluster and sewage large area high efficiency contact effect, to further improve the efficiency of hydrolysis acidification tank and contact oxidation tank to treat sewage.

Description

TECHNICAL FIELD

[0001] The present application relates to sewage treatment technical field, specifically to a sewage treatment purification tank. BACKGROUND

[0002] Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or for reuse, before the urban and rural domestic water is discharged, it needs to be treated and meet the standard, then it can be discharged, in the city, sewage treatment tends to be industrial sewage treatment, in the countryside, buried sewage treatment purification tank is generally used for treatment;

[0003] The buried sewage treatment purification tank for rural areas usually adopts a segmented progressive treatment mode with multiple pool bodies, in this process, microorganisms are often used to degrade impurities in sewage, and the growth of microorganisms needs to be attached to biological fillers, such as plastic, ceramic or semi-soft fiber fillers, which are fixed on the main shaft of the rope, providing microorganisms for attachment, but this biological filler with rope as main shaft will swing with water flow, causing adjacent ropes to entangle, thereby reducing the area of microorganism attachment and affecting sewage purification. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a sewage treatment purification tank to solve the problems raised in the background art.

[0005] The present application provides the following technical scheme: a sewage treatment purification tank, comprising a tank body, three pairs of clamping grooves are fixed in the inside of the tank body, a first partition plate, a second partition plate and a third partition plate are respectively fixed in the inside of the three pairs of clamping grooves, and the inside of the tank body is divided into a sedimentation tank, a hydrolysis acidification tank, a contact oxidation tank and a water outlet tank by the first partition plate, the second partition plate and the third partition plate, and an aeration assembly for aeration is arranged in the inside of the tank body.

[0006] The inside of the hydrolysis acidification tank and the contact oxidation tank is provided with a filler assembly for microorganism attachment;

[0007] The filler assembly comprises an upright frame, the upright frame 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, a connecting rod is threadedly connected to the bottom end of the connecting ring, adjusting cavities are formed in the inside of both ends of the connecting rod, sealing tubes are fixed on the surface of both ends of the connecting rod, the sealing tubes and the adjusting cavities are communicated, electromagnets are fixed in the inside of one end of the two adjusting cavities close to each other, iron sheets are slidably connected in the inside of the adjusting cavities, ropes are fixed on the surface of the iron sheets, the ropes pass through the sealing tubes, and elastic silk clusters are fixed on the surface of the ropes.

[0008] Optionally, the top of the groove body is fixed with a shed cover, the groove body is provided with a water inlet near the side of the settling tank, and the groove body is provided with a water outlet near the side of the water outlet tank.

[0009] Optionally, the aeration assembly comprises a support frame, the bottom of the support frame is fixed with the bottom plate of the inner cavity of the groove body, the vertical part of the support frame is located in the interior of the settling tank, one end of the horizontal part of the support frame is fixed with a three-way pipe, the two ends of the three-way 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 in the interior of the hydrolysis acidification tank, and the air outlet end of the first aeration pipe is fixed with an aeration disc, the air outlet end of the second aeration pipe is located in the interior of the contact oxidation tank, and the air outlet end of the second aeration pipe is fixed with an aeration disc.

[0010] Optionally, the interior of the hydrolysis acidification tank is fixed with a first drain pipe, the hydrolysis acidification tank and the contact oxidation tank are communicated through the first drain pipe, the interior of the contact oxidation tank is fixed with a second drain pipe, and the contact oxidation tank and the water outlet tank are communicated through the second drain pipe.

[0011] Optionally, the interior of the hydrolysis acidification tank is fixed with a fixing frame, one end of the horizontal part of the fixing frame passes through the second partition plate and is fixed with the third partition plate, and 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 with the support frame.

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

[0013] Optionally, the middle part of the connecting rod is provided with a movable groove, the interior of the movable groove is fixed with a partition plate, one end of the adjusting cavity away from each other is fixed with a first spring, and one end of the first spring is fixed with an iron sheet.

[0014] Optionally, the upper and lower ends of the surface of the connecting ring are provided with two groups of attachment assemblies, the attachment assembly comprises a plastic ring and a fixing rod, the plastic ring is connected and fixed through the fixing rod, the outer part of the two groups of plastic rings away from each other is clamped with a limiting buckle, and the surface of the limiting buckle is fixed with a positioning column.

[0015] Optionally, the limiting buckles are clamped in the interior of the movable groove and are located above and below the partition plate respectively, the interior of the connecting rod is slidably and sealingly connected with a jacking rod, and the two ends of the jacking rod are located in the interior of the adjusting cavity and the movable groove respectively, the jacking rod passes through the electromagnet, one end of the jacking rod close to the positioning column is threadedly connected with the positioning column, and the top and bottom of the partition plate are fixed with a second spring, and the second spring abuts against the limiting buckle.

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

[0017] 1. The sewage treatment and purification tank, when the sewage enters the inside of the tank body, provides sufficient growth place for microorganisms through the filler assembly and the attachment assembly, and makes the elastic silk strip cluster driven by the rope to swing in a limited range, avoids the entanglement between the ropes, ensures the effect of large-area and high-efficiency contact between the elastic silk strip cluster and the sewage, and further improves the efficiency of the hydrolysis acidification tank and the contact oxidation tank in treating sewage.

[0018] 2. The sewage treatment and purification tank, through repeated energization of the electromagnet, the filler assembly and the attachment assembly are in a low-frequency and small-amplitude shaking state, thereby playing a self-cleaning role, stripping the aged biological membrane and suspended matter, providing sufficient attachment place for new microorganisms, and further improving the efficiency of the hydrolysis acidification tank and the contact oxidation tank in treating sewage. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0021] Figure 3 It is a sectional view of the structure of the present application;

[0022] Figure 4 It is a structural schematic view of the stand of the present application;

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

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

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

[0026] Figure 8 It is a sectional view of the connecting rod of the present application;

[0027] Figure 9 It is Figure 8 the partial enlarged view of A in the middle;

[0028] Figure 10 It is Figure 8 the partial enlarged view of B in the middle.

[0029] In the diagram: 1. Tank; 11. Inlet; 12. Outlet; 2. Shelf cover; 3. Slot; 31. First partition; 32. Second partition; 33. Third partition; 34. Inlet; 4. Settling tank; 41. Hydrolysis acidification tank; 42. Contact oxidation tank; 43. Outlet tank; 5. Support frame; 51. T-pipe; 52. Fixing frame; 53. First aeration pipe; 54. Second aeration pipe; 55. First drain pipe; 56. Second drain pipe; 6. Stand; 7. Connecting ring; 71. Connecting rod; 72. Adjustment chamber; 73. Sealing pipe; 74. Electromagnet; 75. Movable slot; 76. Isolation plate; 8. Iron sheet; 81. Rope; 82. Elastic filament bundle; 83. First spring; 9. Plastic ring; 91. Fixing rod; 92. Limiting buckle; 93. Positioning post; 94. Top rod; 95. Second spring. Detailed Implementation

[0030] 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.

[0031] Example 1: Please refer to Figures 1-10 A wastewater treatment purification tank includes a tank body 1. Three pairs of slots 3 are fixed inside the tank body 1. A first partition 31, a second partition 32, and a third partition 33 are fixed inside the three pairs of slots 3 respectively. The first partition 31, the second partition 32, and the third partition 33 divide the interior of the tank body 1 into a sedimentation tank 4, a hydrolysis acidification tank 41, a contact oxidation tank 42, and an effluent tank 43. An aeration component for aeration is provided inside the tank body 1. A packing component for microbial attachment is provided inside the hydrolysis acidification tank 41 and the contact oxidation tank 42.

[0032] The packing assembly includes a stand 6, which is fixed to the bottom of the inner cavity of the tank 1. A connecting ring 7 is fixed to the surface of the stand 6. A connecting rod 71 is threaded to the bottom end of the connecting ring 7. An adjustment cavity 72 is opened inside both ends of the connecting rod 71. A sealing tube 73 is fixed to the surface of both ends of the connecting rod 71, and the sealing tube 73 is connected to the adjustment cavity 72. An electromagnet 74 is fixed inside the two adjustment cavities 72 that are close to each other. An iron plate 8 is slidably connected inside each adjustment cavity 72. A rope 81 is fixed to the surface of the iron plate 8. The rope 81 passes through the sealing tube 73. An elastic filament bundle 82 is fixed to the surface of the rope 81.

[0033] The top of the tank 1 is fixed with a cover 2. The tank 1 has an inlet 11 on the side near the sedimentation tank 4 and an outlet 12 on the side near 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 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 of the first aeration pipe 53 is located inside the hydrolysis acidification tank 41, and an aeration disc is fixed to the air outlet of the first aeration pipe 53. The air outlet of the second aeration pipe 54 is located inside the contact oxidation tank 42, and an aeration disc is fixed to the air outlet 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 connected 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 connected 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 32 and is fixed to the third partition 33. The end of the horizontal part of the fixing frame 52 away from the third partition 33 passes through the first partition 31 and is fixed to the support frame 5. A water inlet 34 is opened on the surface of the first partition 31. The sedimentation tank 4 and the hydrolysis acidification tank 41 are connected through the water inlet 34.

[0035] In the specific operation process, the inlet 11, outlet 12 and tee pipe 51 are first connected to the external pipes, so that the sewage can enter the interior of the tank 1 through the inlet 11, and the treated sewage inside the outlet pool 43 can be discharged to the outside through the outlet 12. The tee pipe 51 is connected to the external air duct and is used to pump air into the tee pipe 51.

[0036] When the sewage enters the interior of the tank 1 through the inlet 11, it first enters the interior of the settling tank 4 under the separation of the first baffle 31, the second baffle 32 and the third baffle 33. The sewage settles in the settling tank 4, causing large particles, lumps or mud in the sewage to settle at the bottom. As the water level gradually rises, it enters the interior of the hydrolysis acidification tank 41 through the inlet 34.

[0037] When the wastewater enters the hydrolysis acidification tank 41, the three-way pipe 51, under the control of the valve, selectively pumps air to the first aeration pipe 53 or the second aeration pipe 54. After the wastewater enters the hydrolysis acidification tank 41, the hydrolytic bacteria and acidifying bacteria inside the hydrolysis acidification tank 41 hydrolyze and acidify the wastewater, so that the insoluble large-molecule organic matter in the wastewater is hydrolyzed into soluble small-molecule organic matter. Then, through the acidifying bacteria, the small-molecule organic matter is further converted into volatile fatty acids and other substances that are more easily utilized by microorganisms for subsequent deep purification.

[0038] After the wastewater is treated inside the hydrolysis acidification tank 41 for 2-6 hours, the first drain pipe 55 is activated by the controller to discharge the wastewater in the hydrolysis acidification tank 41 into the contact oxidation tank 42. The biofilm formed by aerobic bacteria inside the contact oxidation tank 42 comes into contact with the wastewater and decomposes the organic matter into carbon dioxide and water. Air is pumped to the second aeration pipe 54 through the three-way pipe 51 to aerate the contact oxidation tank 42, so that the aeration water flow can promote the flow of wastewater and enhance the mass transfer effect.

[0039] After 6 to 12 hours of treatment inside the contact oxidation tank 42, the second drain pipe 56 is activated by the controller to pump the water in the contact oxidation tank 42 into the effluent tank 43 for storage. Then, the treated wastewater is discharged to the outside through the effluent outlet 12.

[0040] It should be noted that all the equipment in this invention is controlled by a controller. Valves are provided on the first aeration pipe 53 and the second aeration pipe 54. Air can be selectively supplied to the first aeration pipe 53 through the valves according to the actual hydrolysis acidification efficiency in the hydrolysis acidification tank 41, thereby aerating the inside of the hydrolysis acidification tank 41 to improve the hydrolysis acidification efficiency. The sewage stored in the effluent tank 43 can be disinfected by adding disinfection equipment according to the discharge requirements to further disinfect the purified sewage.

[0041] Meanwhile, the outer walls of the sedimentation tank 4, the hydrolysis acidification tank 41, and the contact oxidation tank 42 are respectively provided with discharge ports to connect to external pipes and to remove sludge from inside the device.

[0042] Example 2: Specifically, based on Example 1, both the hydrolysis acidification tank 41 and the contact oxidation tank 42 are equipped with packing components for microbial attachment. The packing components in the hydrolysis acidification tank 41 cultivate hydrolytic bacteria and acidifying bacteria, while the packing components in the contact oxidation tank 42 cultivate aerobic bacteria.

[0043] In the process of hydrolysis acidification and biological contact oxidation in Example 1, when the sewage first enters the interior of the hydrolysis acidification tank 41 or the contact oxidation tank 42, the controller activates two electromagnets 74 that are close to each other in the regulating chamber 72. After the electromagnets 74 are energized, they generate magnetic force and attract the iron sheet 8 located in the same regulating chamber 72. The iron sheet 8 is attracted to the surface of the electromagnet 74. When the iron sheet 8 is attracted, the iron sheet 8 pulls the rope 81 to contract inside the sealed tube 73, so that the two ends of the rope 81 are respectively contracted into the interior of the two regulating chambers 72, thereby making the entire rope 81 taut, and then the elastic filament bundle 82 adheres to the surface of the connecting rod 71.

[0044] When wastewater enters the hydrolysis acidification tank 41 or the contact oxidation tank 42, the water level of the wastewater rises, which prevents the adjacent ropes 81 from getting close and tangled together. This also prevents the elastic filament clusters 82 from reducing the area on which microorganisms attach due to the entanglement of the ropes 81, thereby improving the efficiency of wastewater treatment.

[0045] When the hydrolysis acidification tank 41 or the contact oxidation tank 42 is full, the electromagnet 74 can be de-energized. After the electromagnet 74 is de-energized, it loses its attraction to the iron plate 8, and the iron plate 8 is reset under the action of the first spring 83, so that the two ends of the rope 81 are in a loose state inside the adjustment chamber 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 of the elastic filament cluster 82, the rope 81 will be gradually pulled out from the inside of the adjustment cavity 72. As the two ends of the rope 81 are gradually pulled out from the inside of the adjustment cavity 72, the rope 81 located outside the connecting rod 71 gradually loosens, thus allowing the rope 81 to 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 thus improving the efficiency of the microorganisms attached to the surface of the elastic filament cluster 82 in oxidizing and purifying the sewage.

[0047] Since the two ends of the rope 81 are fixed to the surfaces of the two iron plates 8 in the two adjustment chambers 72 respectively, the swing amplitude of the rope 81 is limited, thereby avoiding the entanglement between the ropes 81 and ensuring that the elastic filament clusters 82 on the surface of each rope 81 can contact the sewage to the maximum extent, thereby improving the efficiency of sewage treatment.

[0048] Furthermore, after long-term use, the surface of the elastic filament cluster 82 will be more or less adhered to by suspended matter, which will reduce the contact area between microorganisms and sewage. At this time, the electromagnet 74 can be activated by the controller, so that the electromagnet 74 is repeatedly energized and de-energized. During this process, the electromagnet 74 repeatedly attracts the iron plate 8, which in turn causes the iron plate 8 to repeatedly tighten and loosen the two ends of the rope 81. When the rope 81 is repeatedly tightened, the rope 81 causes the elastic filament cluster 82 to repeatedly contact the connecting rod 71, so that the elastic filament cluster 82 is in a low-frequency micro-amplitude vibration state.

[0049] When the elastic filament cluster 82 is in a low-frequency micro-amplitude vibration state, it can effectively shake off and peel off the aging biofilm and suspended solids, providing more attachment sites for new microorganisms. In this way, while peeling off suspended solids, it increases the contact area between new microorganisms and sewage, and further improves the efficiency of sewage treatment.

[0050] Furthermore, by energizing the electromagnet 74, the operating temperature of the electromagnet 74 can be transferred to the wastewater in the hydrolysis acidification tank 41 and the contact oxidation tank 42 through the connecting rod 71, thereby increasing the temperature of the wastewater. This, in turn, increases the temperature of the microbial growth environment in the hydrolysis acidification tank 41 and the contact oxidation tank 42, stabilizes the efficiency of microbial reproduction and growth, and further improves the efficiency of wastewater purification and treatment. This is especially suitable for environments where the underground wastewater temperature is too low in winter.

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

[0052] Before this invention is put into use, the electromagnet 74 and the first spring 83 need to be adjusted to ensure that after the first spring 83 pulls the iron plate 8 to reset, the iron plate 8 drives the two ends of the rope 81 to return to a loose state. The loose length of the rope 81 ensures that the ropes 81 will not come into contact with each other, thereby ensuring that the rope 81 can swing with a limited amplitude when needed.

[0053] Example 3: A movable groove 75 is provided in the middle of the connecting rod 71. An isolation plate 76 is fixed inside the movable groove 75. A first spring 83 is fixed at one end of the adjusting cavity 72 that is far apart from each other. One end of the first spring 83 is fixed to the iron plate 8. Two sets of attachment components are provided at the upper and lower ends of the surface of the connecting ring 7. The attachment components include a plastic ring 9 and a fixing rod 91. The plastic ring 9 is connected and fixed by the fixing rod 91. The outer side of the two sets of plastic rings 9 that are close to each other is engaged with a limit buckle 92. A positioning post 93 is fixed on the surface of the limit buckle 92.

[0054] The limit buckles 92 are all engaged inside the movable groove 75, and are located above and below the isolation plate 76 respectively. The connecting rod 71 is slidably sealed with a push rod 94 inside, and the two ends of the push rod 94 are located inside the adjustment cavity 72 and the movable groove 75 respectively. The push rod 94 passes through the electromagnet 74, and the end of the push rod 94 near the positioning post 93 is threadedly connected to the positioning post 93. The top and bottom of the isolation plate 76 are fixed with a second spring 95, and the second spring 95 abuts against the limit buckles 92.

[0055] Specifically, based on Embodiment 1 and Embodiment 2, microorganisms can not only grow on the surface of the elastic filament cluster 82, but also on the surface of the plastic ring 9. This results in each connecting rod 71 having two sets of growth sites, thereby increasing the total area on which microorganisms can attach in the hydrolysis acidification tank 41 and the contact oxidation tank 42, and thus improving the efficiency of microorganisms in wastewater treatment.

[0056] Furthermore, in the second embodiment, when the electromagnet 74 is energized, the electromagnet 74 attracts the iron sheet 8. As the iron sheet 8 moves towards the electromagnet 74 inside the adjustment cavity 72, it gradually approaches the push rod 94 until the electromagnet 74 contacts and attracts the iron sheet 8. Then, the iron sheet 8 pushes the push rod 94 to its maximum stroke, and the push rod 94 pushes the positioning post 93, causing the positioning post 93 to be pushed in conjunction with the limit buckle 92, which in turn pushes the entire plastic ring 9.

[0057] At the same time, when the limit buckle 92 is pushed by the push rod 94, the limit buckle 92 compresses the second spring 95. When the electromagnet 74 is de-energized, the iron plate 8 resets and loses its compression on the push rod 94. The second spring 95 then drives the limit buckle 92 to reset, which in turn causes the limit buckle 92 to drive the plastic ring 9 to reset the positioning post 93 and the push rod 94.

[0058] During the repeated energization of the electromagnet 74, while the elastic filament cluster 82 vibrates at a low frequency and a small amplitude, the plastic ring 9 is also in a state of low frequency and a small amplitude up and down swaying. This allows the plastic ring 9 and the elastic filament cluster 82 to achieve a self-cleaning effect simultaneously, enabling the plastic ring 9 to shake off the aged biofilm. This increases the attachment area of ​​new microorganisms on the plastic ring 9, thereby improving the efficiency of wastewater treatment in the hydrolysis acidification tank 41 and the contact oxidation tank 42.

[0059] When both the plastic ring 9 and the elastic filament cluster 82 are in a state of vibration, the plastic ring 9 and the elastic filament cluster 82 come into contact with each other, which can indirectly improve the vibration efficiency of the plastic ring 9 and the elastic filament cluster 82, and improve the efficiency of peeling off aging biofilm and suspended matter.

[0060] Meanwhile, the plastic ring 9 is arranged in a disc shape, which can further improve the effect of disturbing the water flow when it vibrates up and down, further increase the contact area and efficiency between sewage and microorganisms on the surface of the plastic ring 9, and thus improve the efficiency of the plastic ring 9 in treating sewage.

[0061] It should be noted that the top rod 94 and the connecting rod 71 are in a sliding sealed connection state, and the sealing pipe 73 and the rope 81 are also in a sliding sealed connection state. Therefore, sewage will not enter the interior of the regulating chamber 72 through the movable groove 75 and the sealing pipe 73. At the same time, when installing the plastic ring 9, it can first be fitted onto the outside of the connecting rod 71, and then the limiting buckle 92 can be snapped onto the outside of the plastic ring 9. Subsequently, one end of the limiting buckle 92 can be snapped into the interior of the movable groove 75, so that the top rod 94 is threaded onto the outside of the positioning post 93, thereby completing the overall installation of the plastic ring 9.

[0062] 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 sewage treatment purification tank comprising a tank body (1), characterized in that: The inside of the groove body (1) is fixed with three pairs of clamping grooves (3), the inside of the three pairs of clamping grooves (3) is respectively fixed with a first partition plate (31), a second partition plate (32) and a third partition plate (33), and the inside of the groove body (1) is divided into a settling tank (4), a hydrolysis acidification tank (41), a contact oxidation tank (42) and a water outlet tank (43) by the first partition plate (31), the second partition plate (32) and the third partition plate (33), and the inside of the groove body (1) is provided with an aeration assembly for aeration; The inside of the hydrolysis acidification tank (41) and the contact oxidation tank (42) is provided with a filler assembly for microbial attachment; The filler assembly comprises a stand (6) fixed at the bottom of the inner cavity of the groove body (1), a connecting ring (7) fixed on the surface of the stand (6), a connecting rod (71) threadedly connected to the bottom end of the connecting ring (7), an adjusting cavity (72) formed in the inside of both ends of the connecting rod (71), a sealing tube (73) fixed on the surface of both ends of the connecting rod (71) and in communication with the adjusting cavity (72), an electromagnet (74) fixed in the inside of one end of the two adjusting cavities (72) close to each other, an iron sheet (8) slidably connected in the inside of the adjusting cavity (72), a rope (81) fixed on the surface of the iron sheet (8), and a cluster of elastic silk strips (82) fixed on the surface of the rope (81); An active groove (75) is formed at the middle position of the connecting rod (71), an isolation plate (76) is fixed in the inside of the active groove (75), a first spring (83) is fixed at one end of the adjusting cavity (72) away from each other, and the other end of the first spring (83) is fixed with the iron sheet (8); Two groups of attachment assemblies are arranged on the upper and lower ends of the surface of the connecting ring (7), the attachment assembly comprises a plastic ring (9) and a fixing rod (91), the plastic ring (9) is connected and fixed by the fixing rod (91), the two groups of plastic rings (9) are externally clamped with a limiting buckle (92) at one end close to each other, and a positioning column (93) is fixed on the surface of the limiting buckle (92); The limiting buckle (92) is clamped in the inside of the active groove (75) and is respectively located above and below the isolation plate (76), a jack (94) is slidably and sealingly connected in the inside of the connecting rod (71), both ends of the jack (94) are respectively located in the inside of the adjusting cavity (72) and the active groove (75), the jack (94) passes through the electromagnet (74), one end of the jack (94) close to the positioning column (93) is threadedly connected with the positioning column (93), and the second spring (95) is fixed on the top and the bottom of the isolation plate (76) and abuts against the limiting buckle (92).

2. The septic tank according to claim 1, characterized in that: The top of the groove body (1) is fixed with a shed cover (2), one side of the groove body (1) close to the settling tank (4) is provided with a water inlet (11), and one side of the groove body (1) close to the water outlet tank (43) is provided with a water outlet (12).

3. The septic tank according to claim 1, wherein: The aeration assembly comprises a support frame (5), the bottom of the support frame (5) is fixed with the bottom plate of the inner cavity of the tank (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), the 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 the air outlet end of the first aeration pipe (53) is fixed with an aeration disc, the air outlet end of the second aeration pipe (54) is located inside the contact oxidation tank (42), and the air outlet end of the second aeration pipe (54) is fixed with an aeration disc.

4. The septic tank according to claim 1, wherein: The inside of the hydrolysis acidification tank (41) is fixed with a first drain pipe (55), the hydrolysis acidification tank (41) and the contact oxidation tank (42) are communicated through the first drain pipe (55), the inside of the contact oxidation tank (42) is fixed with a second drain pipe (56), and the contact oxidation tank (42) and the water outlet tank (43) are communicated through the second drain pipe (56).

5. The septic tank according to claim 3, wherein: The inside of the hydrolysis acidification tank (41) is fixed with a fixing frame (52), one end of the horizontal part of the fixing frame (52) penetrates through the second partition plate (32) and is fixed with the third partition plate (33), and the end of the horizontal part of the fixing frame (52) away from the third partition plate (33) penetrates through the first partition plate (31) and is fixed with the support frame (5).

6. The septic tank of claim 1, wherein: The surface of the first partition plate (31) is provided with a water inlet (34), and the sedimentation tank (4) and the hydrolysis acidification tank (41) are communicated through the water inlet (34).

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