Vertical multi-chamber purification tank

Abstract

The utility model discloses a vertical multi-chamber purification tank and belongs to the technical field of sewage treatment equipment. The device comprises a shell, at least two relatively independent cavities are formed in the shell, and any one or more cavities can be freely and detachably installed in the shell. According to the structural design of the purification tank, the stress structure of the cavities is optimized, the bearing capacity is greatly improved, each cavity is independently closed, it is guaranteed that each cavity operates normally, sewage cannot be mixed into the cavities, and the phenomenon that the sewage flows into the cavities and is ineffective in treatment is avoided; the pressure from the side wall is powerfully supported by utilizing the mechanics principle, the dual pressure of the soil on the top and the side surface after deep burying can be resisted, and the device is suitable for deep burying in alpine regions.

Description

Technical Field

[0001] The utility model relates to a vertical multi-chamber purification tank, belonging to the technical field of sewage treatment. Background Art

[0002] The treatment of domestic sewage is very important, which can reduce fecal pollution and pathogens caused by unsanitary drinking water. For farmers or remote mountainous areas, due to the lack of concentrated personnel, remote location and complex terrain, it is impossible to lay sewage pipes in a centralized manner. A one-to-one model of one household and one treatment is often adopted. Most of the horizontal purification tanks (septic tanks) commonly constructed in rural areas have a horizontal structure, such as Figure 8 As shown in the figure, the interior of the purification tank is divided into multiple chambers by partitions for decomposition and purification. However, in actual use, due to its own horizontal structural characteristics, the horizontal purification tank has poor compressive bearing capacity and cannot be buried deeply. For high-altitude cold areas, due to the large temperature difference between the four seasons, in the extremely low environment in winter, the horizontal purification tank buried in the shallow soil will be affected by the low temperature, and the soil will also exert different forces on the purification tank due to temperature changes. After a period of use, the side wall of the horizontal purification tank will crack under the multiple effects of pressure and temperature, or the internal partition will tear (such as Figure 8 As shown in the figure, when the partition or the septic tank cracks, the water that has seeped into the soil will flow into the septic tank from the cracks, causing the septic tank to be filled with liquid, making it unable to complete the "sewage treatment" work. Therefore, users are required to pump it out regularly. When the rainy season comes, as the water that has seeped into the soil increases, the amount of water that enters the septic tank from the tear in the partition will increase accordingly. However, pumping out water in the long run is not a long-term solution. Otherwise, a new septic tank will need to be replaced, and the manpower and material costs of replacement and installation are also very high, and it is not very practical.

[0003] Therefore, it is urgent to propose a novel vertical multi-chamber purification tank to solve the above technical problems. Utility Model Content

[0004] The purpose of developing this utility model is to solve the problem that the existing purification tanks have poor pressure resistance and are difficult to be buried deep underground. In addition, for high-altitude cold areas, it is difficult to withstand temperature changes, cracking occurs under the multiple effects of pressure and temperature, or the internal partitions are torn, and it is impossible to use them for a long time. A brief overview of the utility model is given below to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to determine the key or important parts of the utility model, nor is it intended to limit the scope of the utility model.

[0005] The technical solution of this utility model:

[0006] A vertical multi-chamber purification tank comprises a shell, wherein at least two relatively independent chambers are arranged in the shell.

[0007] Preferably, any one or more of the cavities can be freely detachably installed in the housing.

[0008] Preferably, the shell and the cavity are integrally formed.

[0009] Preferably, the number of the cavities is 2, 3, 4, 5 or 6.

[0010] Preferably: a positioning ring is provided on the top and / or bottom of the shell.

[0011] Preferably: an overflow pipe is provided between the two cavities.

[0012] Preferably: the chamber includes a primary biochemical chamber, a secondary biochemical chamber, a sedimentation chamber and a clean water chamber, and the primary biochemical chamber, the secondary biochemical chamber, the sedimentation chamber and the clean water chamber are relatively independently installed inside the outer cylinder, and a hydrolysis chamber is formed between the outer side walls of the primary biochemical chamber, the secondary biochemical chamber, the sedimentation chamber and the clean water chamber and the inner wall of the shell.

[0013] Preferably: the primary biochemical chamber is connected to the hydrolysis chamber through a first overflow pipe, the secondary biochemical chamber is connected to the primary biochemical chamber through a second overflow pipe, the sedimentation chamber is connected to the secondary biochemical chamber through a third overflow pipe, and the clean water chamber is connected to the sedimentation chamber through a fourth overflow pipe.

[0014] Preferably, a sewage outlet communicating with the inside of the hydrolysis chamber is provided at the top of the shell, and a clean water outlet communicating with the inside of the clean water chamber is provided at the top of the shell.

[0015] Preferably, a first inspection port communicating with the first biochemical chamber is formed on the top of the shell, a second inspection port communicating with the second biochemical chamber is formed on the top of the shell, and a third inspection port communicating with the sedimentation chamber is formed on the top of the shell.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model adopts a vertical cylinder structure, and the interior is also an independent vertical cylindrical chamber, and the outer wall is provided with a reinforced grid, the overall compressive bearing capacity is stronger, compared with other purification tanks, under the same geological conditions, the burial depth can be increased by about 20%;

[0018] 2. The internal chamber of the utility model adopts an independent vertical cylindrical structure, which has a better separation effect, and the vertical arc-shaped side wall has a stronger pressure-bearing capacity and is not easy to tear itself;

[0019] 3. The design of multiple chambers of the utility model enables the purification tank to perform sedimentation, purification and decomposition in stages. At the same time, each independent chamber also provides support for the outermost cylinder of the purification tank, further enhancing the pressure resistance of the purification tank itself;

[0020] 4. The utility model can realize direct compaction backfill, which greatly reduces the construction difficulty and construction cost. The strong compressive resistance of the structure can also adapt to different soil conditions and has a wider range of applications;

[0021] 5. The various chambers of the utility model are connected by the communicating vessel principle, which can effectively select the liquid level height of the liquid flowing into the next chamber, refine the differentiation and degradation steps, and effectively improve the purification efficiency and quality.

[0022] 6. The independent chamber of the utility model is fixed in position by a positioning ring, which has a better fixing effect, avoids the movement of the chamber, and is more adaptable to seasonal changes in the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an axonometric view of a septic tank in a specific embodiment;

[0024] Figure 2 is a three-dimensional diagram of the shell and the cavity after one-step molding in the third specific implementation mode;

[0025] Figure 3 is a cross-sectional view of the structural arrangement of the shell and the cavity in the fourth embodiment;

[0026] Figure 4 Schematic diagram of the structure arrangement of the cavity in the fifth embodiment

[0027] Figure 5 is a three-dimensional schematic diagram of the purification tank in the sixth specific implementation mode;

[0028] Figure 6 is a schematic diagram of the arrangement structure of the positioning ring in the housing in the sixth specific implementation mode;

[0029] Figure 7 is a schematic diagram of the arrangement structure of the positioning ring in the housing in the ninth embodiment;

[0030] Figure 8 It is a schematic diagram of the septic tank structure of the prior art. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0032] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection, including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: choose welding connection for fixed connection and hinge connection for detachable connection.

[0033] Specific implementation method 1: Combination Figure 1-Figure 8 To describe this embodiment, the vertical multi-chamber purification tank of this embodiment includes a shell 1, in which at least two relatively independent chambers 2 are arranged, and the function of at least one of the two chambers is set to any one of the following functions: regulation, anaerobic, aerobic, anoxic, precipitation or filtration.

[0034] During implementation, a space for sewage storage is formed between the outer wall of the cavity 2 and the inner wall of the shell 1, and a sewage inlet is provided at the top of the shell 1, the sewage inlet is connected to the inside of the sewage storage space, a "sewer pipe" is installed at the sewage inlet, and domestic sewage is discharged from the "sewer pipe" into the sewage storage space formed by the shell 1 and the cavity 2, and then an overflow pipe is installed on the cavity 2. Under the action of the overflow pipe, the sewage overflows into the cavity 2 to achieve sewage biochemical treatment (i.e. sewage treatment). In addition, an observation port is also provided at the top of the shell 1, which corresponds to the cavity 2 and is used to survey the internal situation of the cavity 2.

[0035] In addition, in this embodiment, the structure of the housing 1 can be a split structure, that is, Figure 1 As shown, the shell is divided into an upper and lower shell. After at least two relatively independent cavities 2 are installed inside the shell, the connection between the upper and lower shells is sealed and installed by hot melt welding (in addition to hot melt welding, other forms of sealing methods can also be used, such as: flange connection sealing structure, etc.).

[0036] In addition, the shell 1 can also be divided into a three-layer structure, including an upper cover, a cylindrical shell and a lower bottom. At least two relatively independent cavities 2 are installed inside the shell, and then hot-melt welding is used to seal and install them at the joints of the upper cover, the cylindrical shell and the lower bottom (in addition to hot-melt welding, other forms of sealing methods can also be used, such as: flange connection sealing structure, etc.).

[0037] The outer side wall of the shell 1 is provided with a reinforcing grille 14, which is integrally formed with the shell 1 and uses mechanical principles to provide strong support for the pressure from the side wall to resist the squeezing force of the shell 1 on the shell 1 when the shell is deeply buried in the soil.

[0038] Specific implementation method 2: Combination Figure 1-Figure 8 , and this embodiment is explained in combination with the specific embodiment 1. In the vertical multi-chamber purification tank of this embodiment, any one or more of the cavities 2 can be freely disassembled and installed in the shell 1. In this way, the cavity 2 is an independent cylindrical structure, that is, the cavity 2 is a cylindrical structure with an open top and a closed bottom. After the cavity 2 is installed in the shell 1, the cavity 2 is an independent structure, which replaces the structure mentioned in the background technology that the interior of the purification tank is divided into multiple chambers by a partition, that is: when the purification tank of this embodiment is used, even if the purification tank of this embodiment is deformed by external force, it will not cause the cavity 2 and the shell 1 to tear at the joint (because the cavity 2 is an independent cylindrical structure, and there is no connection between the cavity 2 and the inner wall of the shell 1).

[0039] The top and / or bottom of the shell 1 are provided with positioning rings 3 for limiting and sealing the independent cylinder structure. Any one or more of the cavities 2 are independently installed in the positioning rings 3, and the positions of the cavities in the shell 1 are limited by the positioning rings 3. In this way, when in use, the septic tank is buried deep in the soil. Even in extremely cold weather, the frozen soil of the soil exerts external force on the septic tank, causing the septic tank to deform without affecting the independent cavity in the shell 1, that is, the cavity 2 will not have the tearing problem at the connection between the partition and the shell 1 mentioned in the background technology. Through the structural design of the septic tank in this embodiment, the force structure of the cavity is optimized, the bearing capacity is greatly improved, and each cavity 2 is independently closed to ensure that each cavity 2 operates normally, and sewage cannot be mixed into the cavity, avoiding the phenomenon of ineffective sewage cavity treatment.

[0040] Specific implementation method three: Combination Figure 1-Figure 8 , and this embodiment is explained in combination with the specific embodiment 1. In the vertical multi-chamber purification tank of this embodiment, the shell 1 and the cavity 2 are integrally formed, that is, the shell 1 and the cavity 2 are integrally formed by stretching or casting, the purpose of which is to save processing / production costs.

[0041] Specific implementation method four: Combination Figure 1-Figure 8, and this embodiment is explained in combination with the specific embodiment 1. In the vertical multi-chamber purification tank of this embodiment, an overflow pipe 4 is arranged between the two chambers 2. One end opening of the overflow pipe 4 is arranged in one of the chambers, and the other end opening of the overflow pipe is arranged in the other chamber, so that the sewage in one of the chambers can overflow into the other chamber, and two of the treatment processes of "regulation, anaerobic, aerobic, anoxic, sedimentation or filtration" in the sewage treatment process are realized through at least two chambers.

[0042] Specific implementation method five: Combination Figure 1-Figure 8 , and this embodiment is explained in combination with the specific embodiment 1. In the vertical multi-chamber purification tank of this embodiment, the number of the chambers 2 is 2, 3, 4, 5 or 6. In this embodiment, the number of the chambers 2 is 4, that is, the chamber 2 includes a primary biochemical chamber 21, a secondary biochemical chamber 22, a sedimentation chamber 23 and a clean water chamber 24. The primary biochemical chamber 21, the secondary biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are all relatively independently installed inside the shell 1, and a hydrolysis chamber 25 is formed between the outer side walls of the primary biochemical chamber 21, the secondary biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 and the inner wall of the shell 1.

[0043] Preferably: the primary biochemical chamber 21 is connected to the hydrolysis chamber 25 through the first overflow pipe 5, the secondary biochemical chamber 22 is connected to the primary biochemical chamber 21 through the second overflow pipe 6, the sedimentation chamber 23 is connected to the secondary biochemical chamber 22 through the third overflow pipe 7, and the clean water chamber 24 is connected to the sedimentation chamber 23 through the fourth overflow pipe 8.

[0044] Preferably, a sewage port 9 and an observation port 91 (the number of observation ports may be one or more) communicating with the inside of the hydrolysis chamber 25 are provided on the top of the shell 1 , and a clean water port 10 communicating with the inside of the clean water chamber 24 is provided on the top of the shell 1 .

[0045] The shell 1 is provided with a positioning ring 3 at the top and bottom, and the first-level biochemical chamber 21, the second-level biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are filled with PE material and hot-welded with the positioning ring 3. The shell 1, the first-level biochemical chamber 21, the second-level biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24, the first-level biochemical chamber 21, the second-level biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are all made of PE / PP reinforced materials. The PE material improves toughness, and the PP material increases strength. Adding additives to composite and modify the two materials The synthetic material can greatly improve the overall compressive bearing capacity. The shell 1 is a two-half structure. During construction, the first-level biochemical chamber 21, the second-level biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are first fixed to the positioning ring 3 at the bottom of the lower half of the shell 1, filled with PE material and hot-welded, and then aligned with the upper half of the shell 1. A rubber ring is also provided between the top openings of the first-level biochemical chamber 21, the second-level biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 and the top positioning ring 3 of the shell 1 for independent sealing between the chambers.

[0046] The purification tank in the implementation of this embodiment is a combination of a septic tank and sewage treatment. The fecal sewage, kitchen washing wastewater and other domestic sewage discharged by farmers are harmlessly treated by aerobic biological treatment technology and then automatically discharged. In this embodiment, biological bacteria agents are put into the primary biochemical chamber 21 and the secondary biochemical chamber 22, and a "sewer pipe" is installed in the sewage outlet 9. The domestic sewage is discharged from the "sewer pipe" into the hydrolysis chamber 25 formed by the shell 1 and the chamber 2. After the feces and silt are precipitated and the oil is isolated in the hydrolysis chamber 25, it overflows from the first overflow pipe 5 into the primary biochemical chamber 21 to further separate the feces and oil, and at the same time, the macromolecular organic matter is hydrolyzed and acidified into small molecules. Organic matter is removed to reduce the load of the subsequent biochemical chamber. The sewage preliminarily treated in the first-level biochemical chamber 21 flows into the second-level biochemical chamber 22 from the second overflow pipe 6, and is oxygenated inside the second-level biochemical chamber 22. The activated sludge and filler-loaded sludge in the domestic sewage are fully mixed and contacted, and the organic pollutants are metabolized and decomposed into carbon dioxide and water, and ammonia nitrogen is converted into nitrate nitrogen. The mud-water mixture in the second-level biochemical chamber 22 enters the sedimentation chamber 23 from the third overflow pipe 7 to separate the mud and water. The supernatant after separation overflows into the clean water chamber 24 through the fourth overflow pipe 8. The clean water chamber 24 is provided with a water pump to automatically discharge water from the chamber to a designated position outside the wall (for example, for watering a vegetable garden).

[0047] The shell 1, the primary biochemical chamber 21, the secondary biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are made of PE / PP reinforced materials. The PE material improves toughness, and the PP material increases strength. The material synthesized by adding additives to composite and modify the two materials can greatly improve the overall compressive bearing capacity.

[0048] In this embodiment, the housing 1 is a split structure, which includes an upper housing and a lower housing, and a "circular" positioning ring 3 (such as Figure 6 As shown), the primary biochemical chamber 21, the secondary biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are all independently installed in the positioning ring 3, and the positioning ring 3 is used to limit the position of each chamber in the shell 1. In this way, when in use, the septic tank is deeply buried in the soil. Even in extremely cold weather, the frozen soil of the soil exerts external force on the septic tank, causing the septic tank to deform, which will not affect the independent cavity in the shell 1, that is: the cavity will not have the tearing problem at the connection between the partition and the shell mentioned in the background technology. Through the structural design of the septic tank in this embodiment, the force structure of the cavity is optimized, the bearing capacity is greatly improved, each cavity is independently closed, and each cavity is guaranteed to operate normally. Sewage cannot be mixed into the cavity, avoiding the phenomenon of ineffective sewage cross-cavity treatment. In addition, the outer wall of the shell 1 is an integrated grid structure, which uses the principle of mechanics to strongly support the pressure from the side wall, and can resist the double pressure of the soil on the top and the side after deep burial, which is suitable for deep burial in high-cold areas.

[0049] Specific implementation method seven: Combination Figure 1-Figure 8 , and this embodiment is explained in combination with the sixth embodiment. In the vertical multi-chamber purification tank of this embodiment, the top of the shell 1 is provided with a first inspection port 11 communicating with the inside of the primary biochemical chamber 21, the top of the shell 1 is provided with a second inspection port 12 communicating with the inside of the secondary biochemical chamber 22, and the top of the shell 1 is provided with a third inspection port 13 communicating with the inside of the sedimentation chamber 23. In this way, through the provision of the inspection ports, the purification tank chamber can be cleaned and repaired respectively.

[0050] Specific implementation eight: In this embodiment, the structural shape of the shell 1 and the relatively independent cavity 2 is described in detail, wherein the shell 1 and the relatively independent cavity 2 can be of any structural form, for example: a cylinder, a square, a rectangular, a fan-shaped body, etc. Any form can be installed to form the purification tank of the spirit of the utility model as long as the cavity 2 can be independent of the shell 1. However, when put into use, it is best for the shell 1 and the cavity 2 to be set to a cylindrical structure. The reason is: first, the cylindrical structure is easy to process. Secondly, the cylindrical structure is pre-buried underground when in use. Since its structure is circular, its pressure resistance effect is best, which improves the overall structural strength. In addition, this implementation can be used in combination with any one of the above-mentioned embodiments one to seven.

[0051] Specific implementation method nine: Combination Figure 1 , 25-8, and combine with the specific embodiment 1 to illustrate this embodiment. The vertical multi-chamber purification tank of this embodiment, the chamber 2 includes a primary biochemical chamber 21, a secondary biochemical chamber 22, a sedimentation chamber 23 and a clean water chamber 24, the primary biochemical chamber 21, the sedimentation chamber 23 and the clean water chamber 24 are relatively independently installed inside the shell 1, and a hydrolysis chamber 25 is formed between the outer side walls of the primary biochemical chamber 21, the sedimentation chamber 23 and the clean water chamber 24 and the inner wall of the shell 1, the secondary biochemical chamber 22 is installed inside the sedimentation chamber 23, and a sedimentation chamber 26 is formed between the outer side wall of the secondary biochemical chamber 22 and the inner wall of the sedimentation chamber 23, the secondary biochemical chamber 22 is connected to the bottom of the sedimentation chamber 26 through a plurality of strip through holes 27, and the plurality of strip through holes 27 are arranged in a circular array at the bottom of the secondary biochemical chamber 22, and the liquid in the secondary biochemical chamber 22 can enter the sedimentation chamber 26 through the plurality of strip through holes 27, utilizing the principle of communicating vessels.

[0052] The primary biochemical chamber 21 is connected to the hydrolysis chamber 25 through the overflow pipe 4, the secondary biochemical chamber 22 is connected to the primary biochemical chamber 21 through the overflow pipe 4, the sedimentation chamber 23 is connected to the secondary biochemical chamber 22 through the overflow pipe 4, and the clean water chamber 24 is connected to the sedimentation chamber 23 through the overflow pipe 4.

[0053] Domestic sewage such as kitchen and washing wastewater is automatically discharged after harmless treatment using aerobic biological treatment technology. In this embodiment, biological bacteria are added into the primary biochemical chamber 21 and the secondary biochemical chamber 22, and a "sewer pipe" is installed in the sewage outlet 9. The domestic sewage is discharged from the "sewer pipe" into the hydrolysis chamber 25 formed by the shell 1 and the chamber 2. After feces, sediment and oil pollution are separated in the hydrolysis chamber 25, it overflows from the overflow pipe 4 into the primary biochemical chamber 21 to further separate feces and oil pollution, and at the same time, the macromolecular organic matter is hydrolyzed and acidified into small molecular organic matter to reduce the load of the subsequent biochemical chamber. The sewage preliminarily treated in the primary biochemical chamber 21 overflows into the secondary biochemical chamber 22, where oxygen is added to fully mix the activated sludge and filler-loaded sludge in the domestic sewage, metabolize and decompose the organic pollutants into carbon dioxide and water, and convert ammonia nitrogen into nitrate nitrogen. The mud-water mixture in the secondary biochemical chamber 22 overflows from the multiple strip-shaped through holes at the bottom thereof into the sedimentation chamber 23 for mud-water separation, and the supernatant after separation overflows into the clean water chamber 24. The clean water chamber 24 is provided with a water pump to automatically discharge water from the chamber to a designated location outside the wall (for example, for watering a vegetable garden).

[0054] The shell 1, the primary biochemical chamber 21, the secondary biochemical chamber 22, the sedimentation chamber 23 and the clean water chamber 24 are made of PE / PP reinforced materials. The PE material improves toughness, and the PP material increases strength. The material synthesized by adding additives to composite and modify the two materials can greatly improve the overall compressive bearing capacity.

[0055] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical multi-chamber purification tank, comprising a housing (1), characterized in that: At least two relatively independent cavities (2) are arranged in the shell (1), and a positioning ring (3) is arranged on the top and / or bottom of the shell (1); Any one or more of the cavities (2) can be freely detachably installed in the housing (1).

2. The vertical multi-chamber purification tank according to claim 1, characterized in that: The number of the cavities (2) is 2, 3, 4, 5 or 6.

3. The vertical multi-chamber purification tank according to claim 1, characterized in that: An overflow pipe (4) is provided between the two cavities (2).

4. The vertical multi-chamber purification tank according to claim 1, characterized in that: The shell (1) and the cavity (2) are both cylindrical.

5. The vertical multi-chamber purification tank according to claim 1, characterized in that: The chamber (2) comprises a primary biochemical chamber (21), a secondary biochemical chamber (22), a sedimentation chamber (23) and a clean water chamber (24); the primary biochemical chamber (21), the secondary biochemical chamber (22), the sedimentation chamber (23) and the clean water chamber (24) are all relatively independently installed inside the shell (1); and a hydrolysis chamber (25) is formed between the outer side walls of the primary biochemical chamber (21), the secondary biochemical chamber (22), the sedimentation chamber (23) and the clean water chamber (24) and the inner wall of the shell (1).

6. The vertical multi-chamber purification tank according to claim 1, characterized in that: The chamber body (2) comprises a primary biochemical chamber (21), a secondary biochemical chamber (22), a sedimentation chamber (23) and a clean water chamber (24); the primary biochemical chamber (21), the sedimentation chamber (23) and the clean water chamber (24) are relatively independently installed inside the shell (1); a hydrolysis chamber (25) is formed between the outer walls of the primary biochemical chamber (21), the sedimentation chamber (23) and the clean water chamber (24) and the inner wall of the shell (1); a secondary biochemical chamber (22) is installed inside the sedimentation chamber (23); a sedimentation chamber (26) is formed between the outer wall of the secondary biochemical chamber (22) and the inner wall of the sedimentation chamber (23); and the secondary biochemical chamber (22) is connected to the sedimentation chamber (26).

7. The vertical multi-chamber purification tank according to claim 6, characterized in that: The primary biochemical chamber (21) is connected to the hydrolysis chamber (25) via a first overflow pipe (5), the secondary biochemical chamber (22) is connected to the primary biochemical chamber (21) via a second overflow pipe (6), the sedimentation chamber (23) is connected to the secondary biochemical chamber (22) via a third overflow pipe (7), and the clean water chamber (24) is connected to the sedimentation chamber (23) via a fourth overflow pipe (8).

8. The vertical multi-chamber purification tank according to claim 7, characterized in that: The top of the shell (1) is provided with a sewage outlet (9) communicating with the interior of the hydrolysis chamber (25), and the top of the shell (1) is provided with a clean water outlet (10) communicating with the interior of the clean water chamber (24).

9. The vertical multi-chamber purification tank according to claim 8, characterized in that: The shell (1) has a first inspection port (11) on the top thereof and is connected to the interior of the primary biochemical chamber (21); the shell (1) has a second inspection port (12) on the top thereof and is connected to the interior of the secondary biochemical chamber (22); and the shell (1) has a third inspection port (13) on the top thereof and is connected to the interior of the precipitation chamber (23).

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