A potential energy biological sewage purifier

Abstract

The present invention discloses a potential energy biological sewage purifier, including an upper water tank assembly and a standard layer connected to the lower part of the upper water tank assembly, wherein the multi-level standard layers are divided into even-numbered standard layers and odd-numbered standard layers, and the upper water tank assembly includes an upper water tank, wherein the upper water tank is divided into a first water tank, a second water tank and a third water tank from left to right by installing a first-level baffle and a second-level baffle, wherein the first-level baffle is higher than the second-level baffle, and the second water tank is respectively provided with a first water inlet tank assembly and a third water inlet tank assembly, wherein the first water tank is provided with an even-numbered floating tank assembly, and the third water tank is provided with an odd-numbered floating tank assembly. The present invention utilizes the potential energy of sewage to realize automatic operation without the need for special personnel management, and has the characteristics of simple structure, high reoxygenation efficiency, low energy consumption and wide adaptability.

Description

Technical Field

[0001] The invention relates to a purifier, in particular to a potential energy biological sewage purifier. Background Art

[0002] At present, the deep biological treatment technology combining activated sludge and biological contact oxidation process is mainly used for sewage treatment at home and abroad, so that the treated water quality can reach the standard of reused water, but its aerobic process mostly adopts the method of forced aeration, which has low reoxygenation efficiency, high energy consumption and high operating costs. Chinese patent 200520071365.X uses water potential energy to convert into kinetic energy through siphon for atmospheric reoxygenation and stripping. Although it can reduce aeration energy consumption, it has the defects of short sewage retention time on each ecological bed, poor sewage treatment effect, high energy consumption, and easy breeding of mosquitoes and flies around the biological turntable. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a potential energy biological sewage purifier, which utilizes water potential energy to allow sewage to intermittently pass through a standard layer for large oxygen reoxygenation and stripping, and has good economic and environmental benefits.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A potential energy biological sewage purifier comprises an upper water tank assembly and a standard layer connected to the lower part of the upper water tank assembly, wherein the multi-level standard layers are divided into even-numbered standard layers and odd-numbered standard layers, wherein the upper water tank assembly comprises an upper water tank, wherein the upper water tank is divided into a first water tank, a second water tank and a third water tank from left to right by installing a first-level baffle and a second-level baffle, wherein the first-level baffle is higher than the second-level baffle, wherein a first water inlet tank assembly and a third water inlet tank assembly are respectively arranged in the second water tank for realizing mutual connection among the first water tank, the second water tank and the third water tank, wherein an even-numbered layer buoyancy tank assembly is arranged in the first water tank for controlling the discharge of water from a first water outlet arranged on the first water tank and the even-numbered standard layers at each level, wherein an odd-numbered layer buoyancy tank assembly is arranged in the third water tank for controlling the discharge of water from a first water outlet arranged on the odd-numbered standard layers.

[0006] The first water tank assembly includes a first water inlet tank and a first floating seal. The first water inlet tank is fixedly connected in the second water tank. The side of the first water inlet tank is communicated with the first-stage partition. A track hole is provided on the upper portion of the first water inlet tank. The shaft rod of the first floating seal is movably connected in the track hole. The water inlet of the first water inlet tank is provided on the periphery of the track hole. The first floating seal is located above the water inlet on the first water inlet tank.

[0007] The third water inlet tank assembly includes a third water inlet tank and a third floating seal. The third water inlet tank is fixedly connected in the second water tank. The side of the third water inlet tank is communicated with the second-stage partition. A track hole is provided on the upper part of the third water inlet tank. The shaft rod of the third floating seal is movably connected in the track hole. The water inlet of the third water inlet tank is provided on the periphery of the track hole. The third floating seal is located above the water inlet on the third water inlet tank.

[0008] The odd-numbered pontoon assembly comprises a third pontoon and a tie rod fixedly connected to the bottom of the third pontoon, the tie rods respectively pass through multiple standard layers, multiple sealing plates are evenly distributed on the tie rods, and the sealing plates are respectively located at the first water outlets on the odd-numbered standard layers at each level;

[0009] A water inlet pipe and a third control float assembly are respectively provided at the bottom of the third buoyancy box, and a support leg is fixedly connected to the bottom of the third buoyancy box.

[0010] The third control float assembly includes a third control float and a track hole provided at the bottom of a third float box, a third float box water discharge port is provided at the periphery of the track hole, and a shaft rod of the third control float is movably connected in the third float box water discharge port.

[0011] The even-numbered-layer pontoon assembly includes a first box body and a first float provided in the first box, the first float is fixedly connected to a pull rod, the pull rod passes through multiple standard layers respectively, and multiple levels of sealing plates are evenly distributed on the pull rod. The first-level sealing plate is located above the first water outlet on the first water tank, and the remaining sealing plates are correspondingly located above the first water outlet on the even-numbered standard layers.

[0012] A first box water outlet is provided at the lower part of the first box body, and a bracket is fixedly connected to the periphery of the first box water outlet. A first sealing ball is provided on the bracket. The first sealing ball is located below the first box water outlet, and the first sealing ball is connected to a water outlet float through a connecting rod.

[0013] The bottom of the standard layer and the third water tank are both provided with a second drain port, the second drain port and the first water outlet are respectively located at the two ends of the standard layer, and the first water outlet and the second drain port are alternately arranged left and right between the even-numbered standard layers and the odd-numbered standard layers adjacent to each other;

[0014] The second water discharge port is provided with a second water discharge component.

[0015] The second water discharge assembly includes a connecting rod, one end of which is fixedly connected to a second sealing ball, the second sealing ball is located at the upper part of the second water discharge port, and the other end of the connecting rod is fixedly connected to a second float;

[0016] The middle part of the connecting rod is hinged to the second-stage partition, the two ends of the connecting rod are respectively located on both sides of the second-stage partition, and the second floating body connected to the other end of the connecting rod is located in the second water tank;

[0017] A second box body with an opening facing upward is fixedly connected in both the even-numbered standard layers and the odd-numbered standard layers. The second box body is respectively located below the first water outlet. A water outlet is provided at the lower part of one side of the second box body. Both sides of the second box body are respectively hinged to the connecting rod. A second sealing ball connected to one end of the connecting rod is located at the upper part of the second water discharge outlet. A second floating body connected to the other end of the connecting rod is located in the second water discharge assembly which is located in the second box body.

[0018] The thickness of the third floating seal is greater than the thickness of the first floating seal.

[0019] The beneficial effects of the present invention are:

[0020] Both ends of the upper water tank are provided with an even-numbered buoyancy tank assembly and an odd-numbered buoyancy tank assembly, respectively, for controlling the discharge of water from the first water outlets provided on the first water tank and the even-numbered standard layers of each level and for controlling the discharge of water from the first water outlets provided on the odd-numbered standard layers, and can simultaneously open or close the first water outlets on the even-numbered standard layers and the odd-numbered standard layers. The present invention utilizes the potential energy of sewage to realize automatic operation, does not require special personnel for management, reduces energy consumption, improves efficiency, and has the characteristics of simple structure, high reoxygenation efficiency, low energy consumption, and wide adaptability;

[0021] A second drain assembly is provided at the bottom of the even-numbered standard floors, odd-numbered standard floors and the third water tank. The second drain assembly can ensure that the sewage in the even-numbered standard floors, odd-numbered standard floors and the third water tank flows into the next level to the maximum extent, which can further prevent excessive retention of sewage on this floor and avoid the problem of sewage overflow in the next cycle of water discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 Cross-sectional view of CC;

[0024] Figure 3 for Figure 1 Sectional view of EE;

[0025] Figure 4 for Figure 1 Cross-sectional view of the middle DD;

[0026] Figure 5 for Figure 4 A schematic diagram of the structure enlargement at the center A;

[0027] Figure 6 for Figure 1 Cross-sectional view of FF. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-6 As shown, the present invention is a potential energy biological sewage purifier, including an upper water tank assembly and several standard layers connected to the lower part of the upper water tank assembly, a filler mushroom bed is arranged in the standard layer, the filler mushroom bed is used for sewage purification, the standard layer can be selected as 6-16 layers according to actual needs, and the effluent can achieve the main standard of Class III water in the "Surface Water Environmental Quality Standard" (GB 3838-2002), the multi-level standard layers are divided into even-numbered standard layers 2 and odd-numbered standard layers 3, and the adjacent even-numbered standard layers 2 and odd-numbered standard layers 3 are staggered at the left and right ends, the upper water tank assembly includes an upper water tank 1, and the upper water tank 1 is divided into a first water tank 1-2, a second water tank and a third water tank 1-6 by installing a first-level baffle 1-2-2 and a second-level baffle 1-6-1 from left to right in the upper water tank 1, the first-level baffle 1-2-2 is higher than the second-level baffle 1-6-1, so that the sewage in the second water tank can first enter the third water tank 1-6 and then enter the first water tank 1-2. The second water tank is provided with a first water tank assembly 1-3 for further connecting the first water tank 1-2 and the second water tank, and the second water tank is provided with a third water tank assembly 1-4 for further connecting the second water tank and the third water tank 1-6. The first water tank 1-2 is provided with an even-numbered floating tank assembly for controlling the discharge of the first water tank 1-2 and the first water outlet 1-7-5 provided on the even-numbered standard layers, and the third water tank 1-6 is provided with an odd-numbered floating tank assembly for controlling the discharge of the first water outlet 1-7-5 provided on the odd-numbered standard layers.

[0030] The third water tank assembly 1-4 includes a third water inlet tank 1-3-4 and a third floating seal 1-3-5. The third water inlet tank 1-3-4 is fixedly connected in the second water tank. The side of the third water inlet tank 1-3-4 is connected to the second-stage partition 1-6-1. When the third water tank assembly 1-4 is opened, the third water tank 1-6 is connected to the second water tank. A track hole is provided on the upper part of the third water inlet tank 1-3-4. The shaft rod of the third floating seal 1-3-5 is movably connected in the track hole. The water inlet of the third water inlet tank 1-3-4 is provided on the periphery of the track hole. The third floating seal 1-3-5 is located above the upper water inlet of the third water inlet tank 1-3-4. During operation, the sewage in the third water tank 1-6 is lower than the upper end surface of the third water inlet tank 1-3-4, and the upper end surface of the third floating seal 1-3-5 is subjected to the pressure of the sewage in the second water tank, so that the third floating seal 1-3-5 seals the upper water inlet of the third water inlet tank 1-3-4; when the sewage overflows the second-level baffle 1-6-1 and enters the third water tank 1-6, the third water inlet tank 1-3-4 is quickly filled with water. At this time, the lower end surface of the third floating seal 1-3-5 is subjected to the buoyancy of the water from the upper water inlet of the third water inlet tank 1-3-4, and a pressure difference is formed between the third water tank 1-6 and the second water tank, which causes the third floating seal 1-3-5 to float. The third floating seal 1-3-5 begins to float, thereby opening 1-3-4. When the third water tank and the second water tank are connected, it is used to control the rapid discharge of water from the odd-numbered standard layers.

[0031] The first water tank assembly 1-3 includes a first water inlet tank 1-3-2 and a first floating seal 1-3-1. The first water inlet tank 1-3-2 is fixedly connected in the second water tank. The side of the first water inlet tank 1-3-2 is connected to the first-stage partition 1-2-2. When the first water tank assembly 1-3 is opened, the first water inlet tank 1-3-2 is connected to the second water tank. A track hole is provided on the upper part of the first water inlet tank 1-3-2. The shaft rod of the first floating seal 1-3-1 is movably connected in the track hole. The water inlet of the first water inlet tank 1-3-2 is provided on the periphery of the track hole. The first floating seal 1-3-1 is located above the upper water inlet of the first water inlet tank 1-3-2. During operation, the sewage in the first water tank 1-2 is lower than the upper end surface of the first water inlet tank 1-3-2, and the upper end surface of the first floating seal 1-3-1 is subjected to the pressure in the second water tank, so that the first floating seal 1-3-1 seals the water inlet on the first water inlet tank 1-3-2; the sewage overflows the first-level baffle 1-2-2 and enters the first water tank 1-2. When the first water inlet tank 1-3-2 is quickly filled with water, at this time, the lower end surface of the first floating seal 1-3-1 is subjected to the buoyancy of the water from the upper water inlet of the first water inlet tank 1-3-2, and a pressure difference is formed between the first water tank 1-2 and the second water tank, causing the first floating seal 1-3-1 to float, thereby opening the water inlet of the first water inlet tank 1-3-2, so that the first water tank 1-2 and the second water tank are connected. In particular, the water inlet of the first water inlet tank 1-3-2 is larger than the water inlet of the third water inlet tank 1-3-4, which is conducive to quickly releasing water from the first water outlet 1-7-5 on the first water tank 1-2 to the odd-numbered standard layers of the first level when the third water tank 1-2 and the second water tank are connected.

[0032] In particular, the thickness of the third floating seal 1-3-5 is greater than that of the first floating seal 1-3-1, so that the buoyancy of the third floating seal 1-3-5 is greater than that of the first floating seal 1-3-1, so that the speed at which the third floating seal 1-3-5 opens the water inlet on the third water inlet tank 1-3-4 is greater than the speed at which the first floating seal 1-3-1 opens the water inlet on the first water inlet tank 1-3-2, shortening the water inlet speed of the third water tank 1-6, thereby shortening the time for the odd-numbered floating tank assembly to open the first water outlets 1-7-5 on each level of the odd-numbered standard layers. On the contrary, the floating speed of the first floating seal 1-3-1 is relatively slow, which increases the water inlet time of the first water tank 1-2, thereby increasing the time for the even-numbered floating tank assembly to open the first water outlets 1-7-5 on each level of the even-numbered standard layers, thereby extending the time for the filler mushroom bed to purify sewage.

[0033] The odd-numbered pontoon assembly includes a third pontoon 1-7 and a tie rod 1-7-3 fixedly connected to the bottom of the third pontoon, the tie rod 1-7-3 passes through multiple standard layers respectively, and multiple sealing plates 1-7-4 are evenly distributed on the tie rod 1-7-3, and the sealing plates 1-7-4 are respectively located at the first water outlets 1-7-5 on each level of odd-numbered standard layers. During operation, sewage enters the third water tank 1-6, and as the sewage increases, the third pontoon 1-7 gradually moves upward due to the buoyancy of the water, thereby opening the first water outlet 1-7-5 on the standard layer, and the sewage in the odd-numbered standard layer can be discharged into the standard layer of the next level.

[0034] In order to further control the third pontoon 1-7 to move downward, an exhaust hole 1-7-1 is provided on the upper part of the third pontoon 1-7, and an inlet pipe 1-7-2 and a third control pontoon assembly for controlling the third pontoon 1-7 to release water are respectively provided at the bottom of the third pontoon 1-7. A leg is fixedly connected to the bottom of the third pontoon 1-7 to facilitate the movement of the third control pontoon assembly. During operation, as the sewage in the third water tank increases, the sewage enters the third pontoon 1-7 through the inlet pipe 1-7-2, and the gas in the third pontoon 1-7 is discharged through the exhaust hole 1-7-1. When the water in the third pontoon 1-7 reaches a certain amount, the third pontoon 1-7 starts to move downward.

[0035] The third control float assembly includes a third control float 1-7-6 and a track hole at the bottom of the third float box. The periphery of the track hole is provided with a third float box drain port 1-7-7. The track hole is movably connected to the shaft rod of the third control float 1-7-6. The third control float 1-7-6 can move up and down along the track hole by utilizing the buoyancy of water, thereby opening and closing the third float box drain port 1-7-7.

[0036] The even-numbered-layer pontoon assembly includes a first box body 1-1 and a first float 1-1-2 provided in the first box body 1-1. The first float is fixedly connected with a pull rod 1-7-3. The pull rod 1-7-3 passes through multiple standard layers respectively. Multiple levels of sealing plates 1-7-4 are evenly distributed on the pull rod 1-7-3. The first-level sealing plate 1-7-4 is located above the first water outlet 1-7-5 on the first water tank, and the remaining sealing plates 1-7-4 are correspondingly located above the first water outlet 1-7-5 on the even-numbered standard layers.

[0037] The first box body 1-1 is provided with a first box body water outlet 1-1-3 at the lower part, and a bracket is fixedly connected to the periphery of the first box body water outlet 1-1-3, and a first sealing ball 1-1-6 is provided inside the bracket, and the first sealing ball 1-1-6 is located below the first box body water outlet 1-1-3, and the first sealing ball 1-1-6 is connected to a water outlet float 1-1-7 through a shaft. During operation, when the sewage rises to a certain height, the water outlet float 1-1-7 moves upward due to the buoyancy of the water, driving the first sealing ball 1-1-6 to seal the first box body water outlet 1-1-3; when the sewage drops to a certain height, the water outlet float 1-1-7 moves downward due to its own gravity, thereby driving the first sealing ball 1-1-6 to drop, and the sewage in the first box body 1-1 flows into the first water tank 1-2 through the first box body water outlet 1-1-3.

[0038] A connecting frame 1-1-5 is fixedly connected to the bottom of the first box body 1-1, and the lower part of the connecting frame 1-1-5 is fixedly connected to the first water tank 1-2.

[0039] In order to improve the drainage performance of the standard floor and the upper water tank, the second drainage port 1-6-2 is provided at the bottom of the even-numbered standard floor 2, the odd-numbered standard floor 3 and the third water tank 1-6, for draining the sewage therefrom. The second drainage port 1-6-2 and the first water outlet 1-7-5 are respectively located at the two ends of the standard floor, and the first water outlet 1-7-5 and the second drainage port 1-6-2 are alternately arranged between the upper and lower adjacent even-numbered standard floors and odd-numbered standard floors. Specifically, the right end of the odd-numbered standard floor is the first drainage port 1-7-5, and the left end is the second drainage port 1-6-2, and the right end of the even-numbered standard floor is the second drainage port 1-6-2, and the left end is the first water outlet 1-7-5;

[0040] The second water discharge port 1-6-2 is provided with a second water discharge component.

[0041] The second water discharge assembly includes a connecting rod 1-5-2, one end of which is fixedly connected to a second sealing ball 1-5-4, the second sealing ball 1-5-4 is located at the upper part of the second water discharge port 1-6-2, and the other end of the connecting rod 1-5-2 is fixedly connected to a second float 1-5-1. The second water discharge assembly utilizes the principle of lever, and the middle part of the connecting rod 1-5-2 is a balance support point.

[0042] Specifically, when the second water discharge assembly is located in the upper water tank, the connecting rod 1-5-2 is hinged to the upper edge of the second-stage partition 1-6-1, and the two ends of the connecting rod 1-5-2 are respectively located on both sides of the second-stage partition 1-6-1, and the second float 1-5-1 connected to the other end of the connecting rod 1-5-2 is located in the second water tank.

[0043] During operation, as the sewage in the second water tank increases, the second float 1-5-1 moves upward, thereby driving the second sealing ball 1-5-4 to move downward to seal the second drain port 1-6-2 in the third water tank; as the sewage in the second water tank decreases, the second float 1-5-1 moves downward, thereby driving the second sealing ball 1-5-4 to move upward to open the second drain port 1-6-2 in the third water tank, and discharge the remaining sewage in the third water tank into the standard layer of the first level.

[0044] When the second water discharge assembly is located in the even-numbered standard layer 2 and the odd-numbered standard layer 3 and is used to control the second water outlet, a second box 1-5-3 with an opening upward is fixedly connected in the even-numbered standard layer 2 and the odd-numbered standard layer 3, and a water outlet is arranged on the inner side of the second box 1-5-3 for discharging sewage in the second box 1-5-3. The second box 1-5-3 is respectively located directly below the first water outlet on the standard layer of the upper level, and connecting rods 1-5-2 are hinged on both sides of the second box 1-5-3. A second sealing ball 1-5-4 connected to one end of the connecting rod 1-5-2 is located at the upper part of the second water discharge outlet 1-6-2, and a second float 1-5-1 connected to the other end of the connecting rod 1-5-2 is located in the second water discharge assembly located in the second box 1-5-3.

[0045] During operation, when the first water outlet of the upper level releases water downward, the second box 1-5-3 is quickly filled with water, causing the second float 1-5-1 to float up and thus seal the standard layer; when releasing water, as the water level drops, the water outlet on the second box 1-5-3 gradually releases water, causing the second float 1-5-1 to sink, thereby opening the second water outlet 1-6-2 and gradually discharging the remaining water in this layer into the standard layer of the next level.

[0046] Working principle:

[0047] The sewage in the second water tank overflows the second-level water barrier 1-6-1, and the sewage quickly enters the third water tank 1-6. When the water level of the third water tank 1-6 rises to the set height, the third floating seal 1-3-5 begins to float up, the second water tank and the third water tank 1-6 are connected, and the third buoyancy tank 1-7 is driven by the buoyancy of the water to gradually move upwards on the sealing plates 1-7-4 at all levels, thereby opening the first water outlet 1-7-5 on the odd-numbered standard layer 3, and the sewage in the odd-numbered standard layer 3 can be discharged into the adjacent even-numbered standard layer 2. When the sewage in the third water tank 1-6 increases, it is discharged into the third buoyancy tank 1-7 through the water inlet pipe 1-7-2, and the gas in the third buoyancy tank 1-7 is discharged through the exhaust hole 1-7-1. As the amount of water in the third buoyancy tank 1-7 increases, the third buoyancy tank 1-7 drives the corresponding sealing plate 1-7-4 to gradually move downwards, thereby sealing the first water outlet 1-7-5.

[0048] The sewage overflows the first-stage baffle 1-2-2, and the sewage quickly enters the first water tank 1-2. When the water level of the first water tank 1-2 rises to the set height, the first floating seal 1-3-1 floats up, and the first water tank 1-2 is connected with the second water tank and the third water tank 1-6. As the sewage in the first water tank 1-2 overflows from the upper part of the first box body 1-1 into it, the first float 1-1-2 in the first box body 1-1 is driven by the buoyancy of the water to gradually move the sealing plates 1-7-4 of each level upward, thereby opening the first water outlet 1-7-5 on the even-numbered standard layer and the first water outlet 1-7-5 on the first water tank 1-2; as the sewage in the first water tank 1-2 decreases, the first box body 1-1 drains water into the first water tank 1-2 through the first box body water outlet 1-1-3, and the water level in the first box body 1-1 decreases, so that the first float 1-1-2 moves downward until the first water outlet 1-7-5 on the even-numbered standard layer is completely sealed.

[0049] The drainage efficiency is improved by the second drainage port 1-6-2 of the even-numbered standard layer and the odd-numbered standard layer, and the second drainage component controls the opening and closing of the second drainage port 1-6-2. Before the sewage in the even-numbered standard layer or the odd-numbered standard layer of the previous level flows into the second box 1-5-3, the sewage in the even-numbered standard layer and the odd-numbered standard layer can flow into the next level to the maximum extent.

[0050] In the present invention, the water tank and the standard layer and the adjacent standard layer are fixedly connected by a bracket. The structure of the bracket and the specific installation position are not further limited and do not belong to the inventive point of the present invention. It is only necessary to achieve a fixed connection between the upper water tank and the standard layer and the adjacent standard layer.

[0051] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0052] If the words "first", "second", etc. are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only to facilitate the description of the present invention and simplify the description. Unless otherwise stated, the above words have no special meaning.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A potential energy biological sewage purifier, comprising an upper water tank assembly and a standard layer connected to the lower part of the upper water tank assembly, wherein the multi-level standard layers are divided into even-numbered standard layers and odd-numbered standard layers, characterized in that: The upper water tank assembly includes an upper water tank, which is divided into a first water tank, a second water tank and a third water tank from left to right by installing a first-level baffle and a second-level baffle in the upper water tank, wherein the first-level baffle is higher than the second-level baffle, and the second water tank is respectively provided with a first water inlet tank assembly and a third water inlet tank assembly for realizing mutual communication among the first water tank, the second water tank and the third water tank, an even-numbered floating tank assembly is provided in the first water tank for controlling the discharge of water from the first water outlet provided on the even-numbered standard layers of each stage, and an odd-numbered floating tank assembly is provided in the third water tank for controlling the discharge of water from the first water outlet provided on the odd-numbered standard layers; The odd-numbered pontoon assembly comprises a third pontoon and a tie rod fixedly connected to the bottom of the third pontoon, the tie rods respectively pass through multiple standard layers, multiple sealing plates are evenly distributed on the tie rods, and the sealing plates are respectively located at the first water outlets on the odd-numbered standard layers at each level; The bottom of the third buoyancy box is respectively provided with a water inlet pipe and a third control buoyancy assembly, and the bottom of the third buoyancy box is fixedly connected with a support leg; The third control float assembly includes a third control float and a track hole provided at the bottom of the third float box, a third float box water discharge port is provided at the periphery of the track hole, and a shaft rod of the third control float is movably connected in the third float box water discharge port; The even-numbered-layer buoyancy tank assembly comprises a first tank body and a first floating body arranged in the first tank, the first floating body is fixedly connected with a tie rod, the tie rod passes through multiple standard layers respectively, and multiple sealing plates are evenly distributed on the tie rod, the sealing plate of the first level is located above the first water outlet on the first water tank, and the remaining sealing plates are correspondingly located above the first water outlets on the even-numbered standard layers; A first box water outlet is provided at the lower part of the first box body, and a bracket is fixedly connected to the periphery of the first box water outlet. A first sealing ball is provided on the bracket. The first sealing ball is located below the first box water outlet, and the first sealing ball is connected to a water outlet float through a connecting rod.

2. A potential energy biological sewage purifier according to claim 1, characterized in that: The first water tank assembly includes a first water inlet tank and a first floating seal. The first water inlet tank is fixedly connected in the second water tank. The side of the first water inlet tank is communicated with the first-stage water baffle. A track hole is provided on the upper portion of the first water inlet tank. The shaft rod of the first floating seal is movably connected in the track hole. The water inlet of the first water inlet tank is provided on the periphery of the track hole. The first floating seal is located above the water inlet on the first water inlet tank.

3. A potential energy biological sewage purifier according to claim 2, characterized in that: The third water inlet tank assembly includes a third water inlet tank and a third floating seal. The third water inlet tank is fixedly connected in the second water tank. The side of the third water inlet tank is communicated with the second-stage water baffle. A track hole is provided on the upper part of the third water inlet tank. The shaft rod of the third floating seal is movably connected in the track hole. The water inlet of the third water inlet tank is provided on the periphery of the track hole. The third floating seal is located above the water inlet on the third water inlet tank.

4. A potential energy biological sewage purifier according to any one of claims 1 to 3, characterized in that: The bottom of the standard layer and the third water tank are both provided with a second drain port, the second drain port and the first water outlet are respectively located at the two ends of the standard layer, and the first water outlet and the second drain port are alternately arranged left and right between the even-numbered standard layers and the odd-numbered standard layers adjacent to each other; The second water discharge port is provided with a second water discharge component.

5. A potential energy biological sewage purifier according to claim 4, characterized in that: The second water discharge assembly includes a connecting rod, one end of which is fixedly connected to a second sealing ball, the second sealing ball is located at the upper part of the second water discharge port, and the other end of the connecting rod is fixedly connected to a second float; The middle part of the connecting rod is hinged to the second-stage partition, the two ends of the connecting rod are respectively located on both sides of the second-stage partition, and the second floating body connected to the other end of the connecting rod is located in the second water tank; A second box body with an opening facing upward is fixedly connected in both the even-numbered standard layers and the odd-numbered standard layers. The second box body is respectively located below the first water outlet. A water outlet is provided at the lower part of one side of the second box body. Both sides of the second box body are respectively hinged to the connecting rod. A second sealing ball connected to one end of the connecting rod is located at the upper part of the second water discharge outlet. A second floating body connected to the other end of the connecting rod is located in the second water discharge assembly which is located in the second box body.

6. The potential energy biological sewage purifier according to claim 3, characterized in that: The thickness of the third floating seal is greater than the thickness of the first floating seal.

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